Electrosurgical units · VIO family

ERBE VIO 200 D: troubleshooting and error codes

The ServiceForge knowledge base holds 46 documented symptoms for the ERBE VIO 200 D, with 46 ranked causes, 46 diagnostic checks with test points and expected values, and 247 error codes. Each symptom below shows its causes and the first check; the rest is one connection away. Connect ServiceForge to your AI

Symptoms

APC module timeout or activation signal failure

System fails to receive activation signal from APC module or signal transmission is interrupted

Ranked causes

1. CAN transmission interrupted or cable positioning issue (common)

First check

Verify CAN transmission integrity

Test point: FS cable connection
Expected: Uninterrupted signal, no interference from HF cables

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APC protocol error in status message (Control panel)

Control panel receives incorrect status message from APC module with invalid CAN ID or format

Ranked causes

1. APC module protocol error or software version mismatch (occasional)

First check

Verify APC status message format and CAN ID

Test point: APC module CAN message output
Expected: Status message has correct CAN ID and valid format per protocol specification

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APC setup parameters invalid

System detects invalid APC setup parameters stored in configuration

Ranked causes

1. Invalid sector error in CAN data (occasional)

First check

Analyze CAN data for sector errors

Test point: CAN bus
Expected: Valid sector data in APC parameters

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APC status error (Control panel) patient safety

APC module reports status 'active' when it should be switched off; status signal conflict

Ranked causes

1. APC module malfunction or EMC interference (occasional)

First check

Verify APC status signal accuracy

Test point: APC module status output on CAN bus
Expected: Status 'inactive' when APC is switched off; status 'active' only during activation

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Button error on receptacle 1

Short circuit or interruption detected on receptacle board 1 button circuit

Ranked causes

1. Short circuit or interruption on receptacle board 1 connector (common)

First check

Inspect receptacle 1 button circuit

Test point: Receptacle board 1 connector
Expected: No short circuits or interruptions; clean connector contact

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Button error on receptacle 2

Short circuit or interruption detected on receptacle board 2 button circuit

Ranked causes

1. Short circuit or interruption on receptacle board 2 connector (common)

First check

Inspect receptacle 2 button circuit

Test point: Receptacle board 2 connector
Expected: No short circuits or interruptions; clean connector contact

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Caloric and differential pressure sensor mismatch caution

Caloric and differential pressure sensors disagree on gas type; indicates wrong gas supply

Ranked causes

1. Wrong gas supplied or sensor calibration/hardware fault (common)

First check

Verify correct gas type at input

Test point: Gas input connector
Expected: Gas type matches system requirement (e.g., O2, N2O, CO2)

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CAN bus error

CAN (Controller Area Network) bus detects length or data error in transmitted packet

Ranked causes

1. CAN data length or format error (occasional)

First check

Verify CAN bus packet length

Test point: CAN bus interface
Expected: All CAN packets conform to length and format specification

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CAN protocol violation (length)

CAN bus detects protocol violation in packet length or format

Ranked causes

1. CAN packet format error or device malfunction (occasional)

First check

Verify CAN protocol compliance

Test point: CAN bus interface
Expected: All CAN packets conform to protocol specification

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Checkstop interrupt invalid memory access (Control panel)

Control panel detects memory access violation; program crash due to software error or malfunction

Ranked causes

1. Software error or EMC interference (occasional)

First check

Monitor for memory access errors

Test point: System console output
Expected: No checkstop interrupt messages; normal memory access

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Differential pressure sensor reading low

Differential pressure sensor measures less than half the expected setting; sensor appears defective

Ranked causes

1. Sensor calibration error or sensor hardware fault (occasional)

First check

Measure differential pressure sensor output

Test point: Differential pressure sensor connector
Expected: Reading >= 50% of expected setting for current gas supply pressure

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EEPROM not ready to read

System cannot access EEPROM memory; read operation fails intermittently

Ranked causes

1. EEPROM access conflict or secondary fault condition (occasional)

First check

Verify EEPROM access is available

Test point: EEPROM interface
Expected: EEPROM read operation completes successfully without timeout

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Error in test mode or calibration

Error occurs during calibration or diagnosis procedure, typically software-related and often uncritical

Ranked causes

1. PC program error during calibration or diagnosis (occasional)

First check

Repeat calibration or diagnostic test

Test point: PC diagnostic interface
Expected: Test completes without software error

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Flow specification exceeded caution

Gas flow rate exceeds maximum target flow specification

Ranked causes

1. Calibration error or faulty flow sensor (occasional)

First check

Measure actual gas flow rate

Test point: Gas outlet measurement point
Expected: Flow rate <= target specification

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Flow specification not attained

Gas flow rate does not reach target flow specification

Ranked causes

1. User error in flow rate setting (common)

First check

Measure actual gas flow rate

Test point: Gas outlet measurement point
Expected: Flow rate >= target specification

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Function not available (Control panel)

Control panel detects that a required function cannot be implemented by the available modules

Ranked causes

1. Module software version mismatch or missing feature (occasional)

First check

Verify module software version and enabled features

Test point: Module firmware version and feature configuration
Expected: All modules have compatible software version; required function is enabled

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Gas input pressure above maximum caution

Overpressure detected at selected gas input; gas supply pressure too high

Ranked causes

1. User error or faulty input pressure measuring circuit (common)

First check

Verify gas input pressure at selected input

Test point: Gas input connector
Expected: Pressure <= maximum operating pressure per screen instructions

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Gas input pressure below minimum caution

Underpressure detected at selected gas input; gas supply pressure too low

Ranked causes

1. User error or faulty input pressure measuring circuit (common)

First check

Verify gas input pressure at selected input

Test point: Gas input connector
Expected: Pressure >= minimum operating pressure per screen instructions

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Gas underdose from instrument caution

Gas delivery from instrument is insufficient; hose may be blocked or instrument defective

Ranked causes

1. Instrument defective or hose blocked (common)

First check

Verify gas flow from instrument

Test point: Gas outlet hose of instrument
Expected: Adequate gas flow with no blockage or restriction

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I²C bus error on EEPROM interface (Control panel) high voltage

Serial I²C communication error on control panel EEPROM interface; cannot read or write EEPROM data

Ranked causes

1. EEPROM or I²C bus component fault (occasional)

First check

Verify I²C bus voltage and EEPROM communication

Test point: I²C SDA/SCL lines on control panel PCB
Expected: I²C bus voltage normal (3-5 V); EEPROM responds to read/write commands

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IIF module serial communication failure

Serial communication with Instrument Interface (IIF) module not possible; connection lost

Ranked causes

1. IIF module connection faulty or disconnected (common)

First check

Verify IIF module serial communication

Test point: IIF module connector
Expected: Serial communication established and responsive

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Input 2 selected with partial complement

Input 2 selection error; received configuration does not match expected

Ranked causes

1. CAN sector error in input configuration data (occasional)

First check

Verify Input 2 configuration in CAN data

Test point: CAN bus Input 2 configuration sector
Expected: Complete configuration data without sector errors

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Internal state incorrect

System internal state machine or data structure is in unexpected state

Ranked causes

1. Software error or data corruption (rare)

First check

Verify system internal state via diagnostics

Test point: System diagnostic menu
Expected: System state consistent with current operational mode

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Invalid EEPROM calibration data

EEPROM contains invalid or corrupted calibration data; cannot load calibration on startup

Ranked causes

1. EEPROM calibration data corrupted or not programmed (occasional)

First check

Verify EEPROM calibration data integrity

Test point: EEPROM calibration sector
Expected: Valid calibration data present and checksum correct

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Invalid instrument resistance number

Instrument resistance measurement reports invalid or undefined instrument number

Ranked causes

1. Instrument not properly registered or detected (common)

First check

Verify instrument resistance measurement value

Test point: Instrument resistance measurement circuit
Expected: Measured resistance corresponds to valid instrument type per database

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Low gas pressure at cylinder 1

Gas bottle 1 pressure is low; bottle needs replacement

Ranked causes

1. Gas bottle 1 depleted or low pressure (common)

First check

Verify gas bottle 1 pressure

Test point: Cylinder 1 pressure gauge or sensor readout
Expected: Pressure >= minimum operating pressure (typically > 500 psi for full bottles)

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Low gas pressure at cylinder 2

Gas bottle 2 pressure is low; bottle needs replacement

Ranked causes

1. Gas bottle 2 depleted or low pressure (common)

First check

Verify gas bottle 2 pressure

Test point: Cylinder 2 pressure gauge or sensor readout
Expected: Pressure >= minimum operating pressure (typically > 500 psi for full bottles)

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Measurement circuit overvoltage high voltage

Voltage on measurement circuit exceeds maximum operating threshold

Ranked causes

1. Power supply regulator fault or wiring damage (occasional)

First check

Measure voltage on measurement circuit

Test point: Measurement circuit power supply node
Expected: Voltage <= maximum specified (typically 5.5 V for sensor circuits)

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Measurement circuit undervoltage high voltage

Voltage on measurement circuit drops below minimum operating threshold

Ranked causes

1. Power supply or wiring fault in measurement circuit (occasional)

First check

Measure voltage on measurement circuit

Test point: Measurement circuit power supply node
Expected: Voltage >= minimum specified (typically 5 V for sensor circuits)

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Measurement circuit voltage error combined high voltage

Both undervoltage and overvoltage conditions detected simultaneously; reference voltage fault

Ranked causes

1. Reference voltage circuit fault or power supply failure (occasional)

First check

Verify reference voltage stability

Test point: Reference voltage node on measurement circuit
Expected: Stable voltage output, no oscillation or dropout

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Module timeout during activation (Control panel)

Control panel detects timeout; module failed to transmit status message via CAN within 110 ms timeout

Ranked causes

1. Faulty module or EMC interference on CAN bus (common)

First check

Verify module CAN status message transmission

Test point: CAN bus interface for identified module
Expected: Module transmits valid status message every < 110 ms

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NE (Nessy2) module not available patient safety

NE module missing or not logged on when monopolar activation is initiated

Ranked causes

1. NE module failure or disconnection (common)

First check

Verify NE module is logged on and available

Test point: NE (Nessy2) module interface
Expected: NE module logged on and ready for monopolar operations

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NE contact resistance out of range patient safety

NESSY message indicates NE (neutral electrode) contact resistance is not within valid range on activation

Ranked causes

1. Patient neutral electrode not properly applied or NE module faulty (common)

First check

Measure NE contact resistance on activation

Test point: NE electrode contact resistance measurement
Expected: Resistance within valid operating range (typically < 50 ohms)

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Operating system error

Operating system encounters fault during execution or after software update

Ranked causes

1. Software error during operation or after update; EMC interference possible (occasional)

First check

Monitor system operation after power cycle

Test point: System console output
Expected: No operating system error message; normal system operation

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Program CRC test failure

Cyclic Redundancy Check (CRC) of program memory detects corruption or mismatch

Ranked causes

1. Program memory corruption or version mismatch (occasional)

First check

Perform firmware integrity check

Test point: System program memory
Expected: Program CRC matches expected value; no memory corruption

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Proportional valve control transistor fault

Control transistor for proportional valve is faulty or damaged

Ranked causes

1. Control transistor faulty (occasional)

First check

Test proportional valve control transistor

Test point: Transistor junction on APC PCB
Expected: Transistor forward/reverse biased normally; no short or open junction

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Proportional valve interruption

Open circuit detected in proportional valve coil circuit

Ranked causes

1. Proportional valve coil not inserted or faulty (common)

First check

Verify proportional valve coil insertion and continuity

Test point: Proportional valve coil connector
Expected: Coil properly inserted with secure connection and continuity

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Proportional valve short circuit

Short circuit detected in proportional valve coil circuit

Ranked causes

1. Short circuit in proportional valve circuit (occasional)

First check

Measure proportional valve coil resistance

Test point: Proportional valve coil connector
Expected: Normal coil resistance (no short), typically 10-50 ohms depending on design

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Receptacle 1 type detection mismatch

Type detection of receptacle 1 does not match stored configuration value

Ranked causes

1. Receptacle configuration mismatch or incorrect version list (common)

First check

Verify receptacle 1 type against version list

Test point: Receptacle 1 physical slot and system configuration database
Expected: Type detection matches stored configuration value per version list

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Receptacle 2 type detection mismatch

Type detection of receptacle 2 does not match stored configuration value

Ranked causes

1. Receptacle configuration mismatch or incorrect version list (common)

First check

Verify receptacle 2 type against version list

Test point: Receptacle 2 physical slot and system configuration database
Expected: Type detection matches stored configuration value per version list

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Safety relay IIF1 position fault patient safety

Relay on IIF module 1 or control on APC controller is faulty or misaligned

Ranked causes

1. Relay on IIF module 1 or APC controller faulty (common)

First check

Verify safety relay IIF1 position

Test point: IIF module 1 relay contact
Expected: Relay in correct position with secure contact

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Safety relay IIF2 addressing error patient safety

Safety relay IIF2 is incorrectly addressed via relay 1+i instead of direct addressing

Ranked causes

1. Relay on IIF module 2 or APC controller faulty (common)

First check

Verify safety relay IIF2 addressing

Test point: IIF module 2 relay control
Expected: Direct relay addressing, not via relay 1+i

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SIO to IIF protocol violation

Serial I/O to Instrument Interface communication protocol error detected

Ranked causes

1. IIF module communication fault or timeout (occasional)

First check

Monitor SIO to IIF communication errors

Test point: IIF module serial interface
Expected: Communication completes without protocol violation

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SIO to IIF timeout

Serial I/O to Instrument Interface communication timeout; no response from IIF

Ranked causes

1. IIF module not responding or cable fault (occasional)

First check

Verify SIO to IIF communication response time

Test point: IIF module serial interface
Expected: IIF responds to SIO query within timeout period (typically < 500 ms)

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Software watchdog triggered (Control panel)

Control panel CPU watchdog timer detects program crash or hang due to software error or malfunction

Ranked causes

1. Software error or EMC interference (occasional)

First check

Monitor for software watchdog occurrences

Test point: System console output
Expected: No watchdog timeout messages; stable program execution

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Valve error on APC module

Input valve coil is not inserted or is faulty; no coil connection detected

Ranked causes

1. Input valve coil not inserted or faulty (common)

First check

Verify input valve coil insertion and continuity

Test point: Input valve coil connector
Expected: Coil properly inserted with secure connection and continuity

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Error codes

Code	Meaning	Trigger	Severity
`1`	Interrupt error: undefined IR vector invoked	Invalid interrupt vector accessed during operation	critical
`10`	Current sensor 1 defective	No signal provided by current sensor UE13	error
`11`	Current sensor 2 defective	No signal provided by current sensor UE12	error
`2`	CRC error: defective program memory discovered during self-check	Program memory CRC check failed after reset	critical
`2`	CRC error	Defective program memory discovered during self-check after reset	error
`3`	Undervoltage 5V	5V voltage discovered to be too low during self-check after reset	error
`3`	Undervoltage 5 V: voltage too low during self-check	5 V supply measured below acceptable range after reset	error
`4`	Overvoltage 5V	5V voltage discovered to be too high during self-check after reset	error
`4`	Overvoltage 5 V: voltage too high during self-check	5 V supply measured above acceptable range after reset	error
`5`	Undervoltage ±12 V: +12 V too low or –12 V too high	+12 V or –12 V supply out of range during self-check	error
`6`	Overvoltage ±12 V: +12 V too high or –12 V too low	+12 V or –12 V supply out of range during self-check	error
`6`	Overvoltage ±12V	+12V voltage discovered to be too high or -12V voltage too low during self-check after reset	error
`7`	Undercurrent activation recognition: measurement current too low	Activation recognition current below acceptable threshold	error
`7`	I-source defective	No signal provided by power source for NE contact resistance measurement	error
`70`	Relay error	Relay configuration or state error detected	error
`71`	Relay error	Relay state validation failed	error
`72`	Relay error	Relay state validation failed	error
`8`	Overcurrent activation recognition: measurement current too high	Activation recognition current above acceptable threshold	error
`8`	MOSI_error	SPI receive register contains $FF after Interrupt call-up	error
`80`	CRC Error	EIP 2 CRC monitoring procedure at unit startup discovers an error	error
`81`	Short circuit instrument recognition R: resistor value indicates short	Instrument recognition resistor measurement detects short circuit condition	error
`82`	Pump lid open at ON	Pump lid of EIP 2 not closed at start or opened during activation; Hall sensor circuit board not connected or faulty	warning
`82`	Short circuit activation recognition R_NEU: resistor indicates short	Activation recognition resistor measurement detects short circuit	error
`83`	No-load activation recognition R_NEU: resistor indicates open circuit	Activation recognition resistor measurement detects open circuit	error
`84`	Instrument recognition R-window violated: resistor cannot be assigned	Resistor value outside defined recognition window for instrument type	error
`84`	Time Out Error	Activation of EIP 2 maintained for more than 20 seconds	warning
`85`	Short circuit activation recognition R_ALT: resistor indicates short	Alternate activation recognition resistor detects short circuit	error
`86`	Activation error: activation not consistent with instrument type	Activation mode selected does not match recognized instrument type	error
`87`	Framing error: UART did not detect stop bit at end of byte	Serial receive failed to detect valid stop bit	error
`88`	UeWS Error	Motor control monitoring circuit is faulty	error
`88`	Parity error: check for even parity was unsuccessful	Serial data received with incorrect parity bit	error
`89`	Unknown identifier: interrupt routine detected non-agreed identifier	Received message has unrecognized identifier or format	error
`8A`	DS2430 CRC error: received data record from instrument defective	CRC check failed on one-wire device data record	error
`8B`	Non-permissible instrument recognition R_S3	Non-permissible value determined for resistor-coded instrument recognition	error
`8C`	Non-permissible sockets and relay status	Non-permissible value determined for socket recognition	error
`8D`	Non-permissible instrument recognition R_S4	Non-permissible value determined for resistor-coded instrument recognition	error
`8E`	Non-permissible instrument recognition R_S8	Non-permissible value determined for resistor-coded instrument recognition	error
`8F`	UART timeout	UPR Receive_UART has not received anything 351us after call-up	error
`9`	Undercurrent instrument recognition: measurement current too low	Instrument recognition current below acceptable threshold	error
`90`	No current or no load	No measurable current input to motor during activation	error
`90`	DS2430_Write error	Attempt to write to EEPROM for instrument recognition unsuccessful	error
`A`	Overcurrent instrument recognition: measurement current too high	Instrument recognition current above acceptable threshold	error
`A0`	Current too high at ON	Current input to motor is too high	error
`A1`	Timeout of activation signal	CAN transmission interrupted or FS cable improperly positioned relative to HF cable	error
`A10`	Gas input underpressure	Pressure sensor reads below minimum threshold at selected gas input	warning
`A11`	Gas input overpressure	Pressure sensor reads above maximum threshold at selected gas input	warning
`A12`	Gas type mismatch between sensors	Caloric and differential pressure sensors disagree on gas type	warning
`A13`	Differential pressure sensor reading low	Differential pressure sensor output less than 50% of expected setting	warning
`A2`	APC setup parameters invalid	Invalid sector error in CAN configuration data	error
`A21`	Measurement circuit undervoltage	Voltage on measurement circuit drops below minimum operating threshold	error
`A22`	Measurement circuit overvoltage	Voltage on measurement circuit exceeds maximum operating threshold	error
`A23`	Measurement circuit voltage error combined	Both undervoltage (A21) and overvoltage (A22) conditions detected simultaneously	error
`A3`	Safety relay IIF1 position fault	Relay on IIF module 1 or APC controller malfunction	critical
`A30`	Input 2 selected with partial complement	Input 2 configuration sector error in CAN data	warning
`A38`	Receptacle 1 type detection mismatch	Type detection does not match stored configuration value in system database	warning
`A39`	Receptacle 2 type detection mismatch	Type detection does not match stored configuration value in system database	warning
`A4`	Safety relay IIF2 addressing error	Relay on IIF module 2 or APC controller malfunction	critical
`A40`	Flow specification not attained	Gas flow rate does not reach target flow specification	warning
`A41`	Flow specification exceeded	Gas flow rate exceeds maximum target flow specification	warning
`A5`	Button error receptacle 1	Short circuit or interruption on receptacle board 1 connector	error
`A6`	Button error receptacle 2	Short circuit or interruption on receptacle board 2 connector	error
`A7`	Input valve error	Input valve coil not inserted or faulty; no continuity detected	warning
`A7D`	Program CRC test failure	Cyclic Redundancy Check detects program memory corruption or mismatch	error
`A7E`	EEPROM not ready to read	System cannot access EEPROM memory; read operation fails	warning
`A7F`	Operating system error	Operating system fault during execution or after software update	error
`A8`	Proportional valve interruption	Open circuit in proportional valve coil circuit	warning
`A80`	Internal state incorrect	System internal state machine in unexpected state	warning
`A81`	CAN protocol violation	CAN bus detects packet length or format violation	error
`A82`	SIO to IIF protocol violation	Serial I/O to IIF communication protocol error	warning
`A83`	SIO to IIF timeout	Serial I/O to IIF communication timeout; no response from IIF	warning
`A85`	Invalid instrument resistance number	Instrument resistance measurement reports undefined instrument number	warning
`A86`	Gas underdose from instrument	Gas delivery from instrument insufficient; underdose detected	warning
`A9`	Proportional valve short circuit	Short circuit detected in proportional valve coil circuit	warning
`A90`	Low pressure at cylinder 1	Gas bottle 1 pressure drops below minimum threshold	warning
`A91`	Low pressure at cylinder 2	Gas bottle 2 pressure drops below minimum threshold	warning
`AA`	Proportional valve control transistor fault	Control transistor malfunction or component failure	warning
`AA0`	Invalid EEPROM calibration data	EEPROM contains invalid or corrupted calibration data on startup	error
`AB`	Error in test mode or calibration	Software error during calibration or diagnostic test execution	warning
`AC`	IIF module serial communication failure	Serial communication with IIF module lost or unavailable	error
`AD`	CAN bus error	CAN packet length or data format violation detected	error
`B1`	Software watchdog triggered	Program crash due to software error or malfunction	error
`B10`	Please terminate activation	Activation automatically terminated but activation signal remains longer than 5 s	warning
`B11`	Error during activation	Activation not enabled for over 110 ms during activation	error
`B12`	Activation signal during switch-on	Activation signal present during initialization (e.g. footswitch pedal pressed)	warning
`B13`	Errors in list management	Error identified in flash file during event or error list management	error
`B14`	CRC error	Continuous CRC monitoring detects program error	critical
`B15`	FLASH RAM verification error	Continuous monitoring detects error in DRAM memory	error
`B16`	Insufficient EEPROM memory	Memory for user programs is full	warning
`B17`	Double activation	Two activation signals present simultaneously within 100 ms	warning
`B18`	No deactivation signal	HF or APC module fails to react to deactivation request for longer than 110 ms	error
`B19`	PowerFail	PowerFail signal received but power failure does not occur within 2 s	error
`B1A`	Error in parameter memory	Checksum monitoring of program detects error	error
`B1B`	CRC check not yet completed	Unit operated before CRC check completed after software download	warning
`B1C`	Maximum ON time exceeded	Activation lasts longer than ON time selected in SETUP	warning
`B1D`	Incorrect instrument parameters	Instrument recognized via instrument recognition but parameter outside tolerances	error
`B1E`	Keyboard error	Button pressed recognized during initialization	warning
`B1F`	NESSY symmetry monitoring	Error signaled by Nessy symmetry monitoring during activation	warning
`B2`	Module timeout during activation	Module fails to transmit CAN status message within 110 ms timeout	error
`B21`	Incorrect or missing bitmap file	Incompatible bitmap file found	error
`B22`	Tissue still touched after activation terminated	Activation automatically terminated (e.g. by AutoStop) but tissue still in contact	warning
`B23`	Configuration error of HF CPU	HF CPU transmits invalid status message (0x27)	error
`B24`	Incorrect status message from IES 2	Invalid status message received from IES 2 module	error
`B25`	Modified receptacle configuration detected	Receptacle configuration changed (e.g. replacement or retrofitting)	error
`B5`	APC status error	APC module signals 'active' status when it should be off	critical
`B6`	APC protocol error in status message	Invalid status message received from APC module with incorrect CAN ID	error
`B81`	Indication of incorrect CAN protocol	Non-ECB-specified CAN message received	error
`B82`	Indication of receptacle arrangement change	Changes in receptacle assignment signaled during operation	warning
`B84`	Dual-pedal footswitch recognized	Dual-pedal footswitch connected to system	info
`B85`	Dual-pedal footswitch disconnected	Dual-pedal footswitch disconnected from system	info
`B86`	APC receptacle 1 recognized	APC receptacle 1 detected and connected	info
`B87`	No status message from APC receptacle 1	APC receptacle 1 disconnected or not responding	error
`B88`	Single-pedal footswitch recognized	Single-pedal footswitch connected to system	info
`B89`	Single-pedal footswitch disconnected	Single-pedal footswitch disconnected from system	info
`B8A`	APC receptacle 2 recognized	APC receptacle 2 detected and connected	info
`B8B`	No status message from APC receptacle 2	APC receptacle 2 disconnected or not responding	error
`B8C`	APC module recognized	APC module detected and connected	info
`B8D`	No status message from APC module	APC module disconnected or not responding	error
`B8E`	No status message from HF receptacle 1	HF receptacle 1 disconnected or not responding	error
`B8F`	No status message from HF receptacle 2	HF receptacle 2 disconnected or not responding	error
`B9`	Checkstop interrupt invalid memory access	Program crash due to memory access violation	error
`B90`	No status message from HF receptacle 3	HF receptacle 3 disconnected or not responding	error
`B91`	No status message from IES module	IES module is disconnected from the system	warning
`B92`	IES module recognized	An IES module is detected	info
`B93`	Multifunctional footswitch recognized	A multifunctional footswitch is connected	info
`B94`	Multifunctional footswitch has been disconnected from the system	A multifunctional footswitch is disconnected	info
`B95`	New instrument recognized by system	An instrument with instrument recognition is connected	info
`B97`	Error in the program modification list	Checksum of a stored setting is not correct, e.g. due to storage cell flipping	error
`B98`	Error in the program list	Checksum of a stored program is not correct, e.g. due to storage cell flipping	error
`B99`	Activation type not available	User assigns an activation signal that is not currently available, e.g. unconnected footswitch	warning
`B9A`	Please check the clock	VIO switched off for long time, supply current to real-time clock insufficient	warning
`B9B`	Master remote control recognized	A master remote control is recognized by the VIO	info
`B9C`	Master remote control has been disconnected from the system	Master remote control is disconnected	info
`B9D`	Remote control recognized	A remote control is recognized by the VIO	info
`B9E`	Remote control has been disconnected from the system	Remote control is disconnected	info
`B9F`	Instrument has been disconnected from the system	An instrument with instrument recognition is disconnected	info
`BA`	NE module not available	NE (Nessy2) module missing or not logged on during monopolar activation	critical
`BA0`	No other mode can be set for this instrument	User wants to assign a different mode to an instrument with a fixed mode	info
`BA1`	No status message from HF module	Control panel does not receive status message from HF module for longer than 1 second	error
`BA3`	Footswitch not assigned	A footswitch which has not been assigned to an output socket is pressed	warning
`BA4`	Two footswitches are connected	Two footswitches of the same type are connected	warning
`BA6`	EEPROM is updated	Unit is programmed using a connected PC	info
`BA8`	Invalid ECB version	A module with an invalid ECB version logs on	error
`BA9`	Activation not possible until settings are confirmed	User wants to perform activation after switching on unit without confirming settings	warning
`BAA`	No valid mode is assigned	Output channel is activated without a mode being assigned to it	warning
`BAB`	Activation is only possible with a valid instrument	MF receptacle is activated at which no instrument is recognized	warning
`BAC`	AutoStart is not possible if contact is made during assignment	AutoStart function is assigned while contact has already been recognized	warning
`BAD`	Error with version check	A module with an invalid version tries to log on	error
`BAE`	No modules logged on	No modules log on during initialization phase	critical
`BAF`	NE module ceases to respond	NE module stops responding	error
`BB`	NE contact resistance out of range	Neutral electrode contact resistance outside valid range on activation	critical
`BB0`	NESSY symmetry warning	Nessy symmetry monitoring signals a value between 20% and 50%	warning
`BB1`	NESSY current density warning	Nessy current density monitoring signals a value above limit curve	warning
`BB2`	IES footswitch detected	An IES footswitch is connected	info
`BB3`	Calibration of keyboard	Capacitive keyboard is recalibrated	info
`BB4`	Rinsing of an APC instrument	Rinsing of an APC instrument is initiated	info
`BB5`	CAN warning	Error counter of CAN controller reaches critical value	warning
`BB6`	Incorrect receptacle version signal	Incorrect receptacle version signal is received	warning
`BB7`	Permissible limit value of AUTO START activation has been exceeded	Attempt is made to assign AutoStart activation a non-permissible power limitation value	info
`BB8`	New interface module recognized	Interface module (e.g. VIO PORTAL) logs on to system	info
`BB9`	Interface module has been disconnected from the system	Interface module (e.g. VIO PORTAL) is disconnected	info
`BBA`	Warning from interface module	Interface module (e.g. VIO PORTAL) signals an error	warning
`BBB`	Reminder that a safety check is due	Safety check is due	info
`BBC`	VEM 2 module recognized	Receptacle extension module VEM 2 logs into system	info
`BBD`	VEM 2 module disconnected	Receptacle extension module VEM 2 is disconnected	info
`BBE`	VEM 2 module receptacle 1 no longer ready for operation	First receptacle of VEM 2 module no longer responds	error
`BBF`	VEM 2 module receptacle 2 no longer ready for operation	Second receptacle of VEM 2 module no longer responds	error
`BC`	Function not available	Required function cannot be implemented by available modules	warning
`BC0`	Neither footswitch nor AUTO START assigned	Instrument without fingerswitch recognized and no footswitch or AUTO START assigned	info
`BC1`	EIP 2 was recognized by the system	EIP 2 connected to system	info
`BC2`	EIP 2 was disconnected from the system	EIP 2 disconnected from system	info
`BC3`	IES 2 footswitch was disconnected from the system	IES 2 footswitch disconnected from system	info
`BC4`	Purge function not assigned	Purge button on APC pressed without APC receptacle selected	warning
`BD`	I²C bus error on EEPROM interface	Serial I²C write or read function fails on EEPROM	error
`BE`	ECB bus error	Control panel CPU detects error at CAN bus	error
`BF`	No signal from capacitive keyboard	Control panel CPU does not receive signal from capacitive keyboard	error
`BFC`	Power Down	Unit switched off	info
`BFD`	System Reset	System reset performed, e.g. when switching on unit	info
`BFE`	PowerFail	PowerFail signaled, e.g. when switching off unit	info
`BFF`	CAN MESSAGE	CAN message transmitted by control panel to be logged in protocol	info
`C`	Stack error: stack pointer not at Top of Stack in main loop	Stack pointer validation failed during execution	critical
`C`	Stack error	Stack pointer does not point to Top of Stack in main program loop	error
`C0`	Motor control faulty (voltage too high at ON)	Measured voltage is too high during motor control operation	error
`C1`	System error: CPU has not received necessary CAN message from control panel at proper time	CAN message not received by CPU at expected time	error
`C21`	Overdose: Output 20% too high	HF output exceeds target by 20%	critical
`C26`	Measurement values of P_HF and P_NT do not agree	HF power output greater than NT power output or values diverge	error
`C30`	Redundant measurement value for HF voltage too great during activation	HF voltage redundancy check exceeds limit during activation	error
`C31`	Measurement value for HF voltage too great with OFF	HF voltage exceeds limit when unit is OFF	error
`C32`	Measurement value for HF voltage too small with OFF	HF voltage below limit when unit is OFF	error
`C33`	Measurement value for HF voltage too great with ON	HF voltage exceeds limit when unit is ON	error
`C34`	Measurement value for HF voltage too small with ON	HF voltage below limit when unit is ON	error
`C35`	Measurement value for HF current too great with OFF	HF current exceeds limit when unit is OFF	error
`C36`	Measurement value for HF current too small with OFF	HF current below limit when unit is OFF	error
`C37`	Measurement value for HF current too great with ON	HF current exceeds limit when unit is ON	error
`C38`	Measurement value for HF current too small with ON	HF current below limit when unit is ON	error
`C4`	System error: Internal status	Internal CPU status error	error
`C41`	Measurement value for spark too great with OFF	Spark measurement exceeds limit when unit is OFF	error
`C42`	Measurement value for spark too small with OFF	Spark measurement below limit when unit is OFF	error
`C43`	Measurement value for spark too great with ON	Spark measurement exceeds limit when unit is ON	error
`C44`	Measurement value for spark too small with ON	Spark measurement below limit when unit is ON	error
`C45`	Measurement value for phase too great with OFF	Phase measurement exceeds limit when unit is OFF	error
`C46`	Measurement value for phase too small with OFF	Phase measurement below limit when unit is OFF	error
`C47`	Measurement value for phase too great with ON	Phase measurement exceeds limit when unit is ON	error
`C48`	Measurement value for phase too small with ON	Phase measurement below limit when unit is ON	error
`C5`	System error: CAN message with wrong length	CAN message received with incorrect length	error
`C51`	Measurement value for power supply unit voltage too great with OFF	Power supply unit voltage exceeds limit when unit is OFF	error
`C52`	Measurement value for power supply unit voltage too small with OFF	Power supply unit voltage below limit when unit is OFF	error
`C53`	Measurement value for power supply unit voltage too great with ON	Power supply unit voltage exceeds limit when unit is ON	error
`C54`	Measurement value for power supply unit voltage too small with ON	Power supply unit voltage below limit when unit is ON	error
`C55`	Measurement value for power supply unit current too great with OFF	Power supply unit current exceeds limit when unit is OFF	error
`C56`	Measurement value for power supply unit current too small with OFF	Power supply unit current below limit when unit is OFF	error
`C57`	Measurement value for power supply unit current too great with ON	Power supply unit current exceeds limit when unit is ON	error
`C58`	Measurement value for power supply unit current too small with ON	Power supply unit current below limit when unit is ON	error
`C5A`	Power supply unit actuating voltage too great	PSU actuating voltage exceeds limit	error
`C5B`	Power supply unit actuating voltage too small	PSU actuating voltage below limit	error
`C6`	System error: Activation request without parameter message	Activation request received without required parameter message	error
`C61`	Operating voltage +15 V incorrect	Supply voltage +15 V out of tolerance	error
`C62`	Operating voltage –15 V incorrect	Supply voltage –15 V out of tolerance	error
`C63`	Operating voltage +24 V incorrect	Voltage monitoring detected deviation from specification	error
`C64`	Operating voltage –5 V incorrect	Voltage monitoring detected deviation from specification	error
`C70`	Relay configuration insufficient	Self-check of relay configuration during startup or operation	error
`C71`	At least 1 relay signaled as closed although all should be open	Relay self-check during operation	error
`C72`	At least 1 relay signaled as open although all should be closed	Relay self-check during operation	error
`C75`	IIF signals invalid instrument number	IIF communication detected invalid instrument identification code	error
`C7D`	System error: CRC error in program memory	CRC check of program memory failed during self-test	critical
`C7E`	System error: EEPROM not ready to read	EEPROM access failed during self-check	critical
`C7F`	System error: Multitasking	Multitasking execution error detected	critical
`C81`	System error: CAN protocol length incorrect	CAN bus message received with incorrect length	error
`C82`	System error: SIO protocol length incorrect	Serial I/O message received with incorrect length	error
`C83`	System error: IIF has not responded at proper time	Timeout waiting for IIF communication response	error
`C84`	Short circuit between AE and NE	Short circuit detection between active and neutral electrodes	warning
`C91`	Redundancy error: Current at NESSY greater than at CPU + sensors	Current measurement mismatch between sensor modules	error
`C92`	Redundancy error: Power supply current available but no HF current	Current monitoring detects mismatch between supply and output	error
`CA0`	Temperature sensor at CPU + sensors defective	Temperature sensor self-check failed	warning
`CA1`	EEPROM calibration values incorrect	Calibration data verification failed	warning
`CC0`	Relay error in APC during self-check	Relay self-check failed in Active Power Control module	error
`CD`	System error: CAN length of message	CAN message length error detected	error
`CF0`	Trial activation with Pmax==0 (USA) -> no HF	Activation attempted when maximum power setting is zero	info
`D`	State error: state variable contains non-permissible value	State machine entered invalid state	critical
`D`	State error	State variable contains a non-permissible value	error
`D80`	ECB fault	Communication error with IES 2 smoke evacuation control board	error
`D81`	Excess temperature (> 60 °C)	Temperature sensor reading exceeds 60 °C in IES 2 unit	warning
`D82`	Insufficient temperature (< 0 °C)	Temperature sensor reading drops below 0 °C in IES 2 unit	warning
`D83`	Software error (check total)	Software checksum or integrity verification failed	critical
`D86`	Pressure sensor error	Pressure sensor self-test failed	error
`E`	CRC error	Defective program memory discovered by system check during operation	error
`E`	CRC error: defective program memory during operation	Program memory CRC check failed during system operation	critical
`F`	U Coag error: +12 V voltage too low during Coag activation	+12 V supply drops below minimum during coagulation mode	error

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ServiceForge knowledge base record. Field-unverified unless technicians confirmed it. A teaching summary of the record, not a service manual. Export 2026-10-14.