Electrosurgical generators · Force FX family

Valleylab Force FX: troubleshooting and error codes

The ServiceForge knowledge base holds 40 documented symptoms for the Valleylab Force FX, with 92 ranked causes, 36 diagnostic checks with test points and expected values, and 110 error codes. Each symptom below shows its causes and the first check; the rest is one connection away. Connect ServiceForge to your AI

Symptoms

Generator on and accessory activated but no output delivered high voltage

Electrosurgical output not generated despite power on and activation signal

Ranked causes

1. Malfunctioning footswitch or handswitching instrument (common)
2. Incompatible footswitch (occasional)
3. Footswitch connected to wrong receptacle for instrument connection (occasional)
4. Footswitch connected to Monopolar 2 for Monopolar 1 instrument (occasional)
5. Power set too low (common)
6. Alarm condition exists (occasional)
7. Blown fuse on Power Supply/RF board (occasional)
8. Control board malfunction (occasional)
9. High voltage power supply malfunction (occasional)
10. RF output stage malfunction (occasional)

First check

Verify accessory connections

Test point: Footswitch and instrument receptacles
Expected: Secure connections to appropriate receptacles

1 more check with pass and fail actions, 12 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Generator does not respond when turned on high voltage

Device fails to power up or initialize when power switch is activated

Ranked causes

1. Disconnected power cord, faulty wall receptacle, or faulty power cord (common)
2. Fuse drawer open or fuses blown (common)
3. Loose or disconnected internal cables (occasional)
4. Faulty power entry module or connections (occasional)
5. Faulty low voltage power supply (occasional)
6. Damaged Control board connectors and/or malfunctioning Control board (occasional)
7. Shorts or disconnects on Power Supply/RF board (occasional)
8. Faulty power switch (rare)
9. Malfunctioning front panel components (rare)

First check

Verify power cord connections

Test point: Generator and wall receptacle
Expected: Secure connections

1 more check with pass and fail actions, 9 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Generator is on but did not complete self-test

Device powers on but fails to pass initialization self-test routine

Ranked causes

1. Alarm condition exists (common)
2. Software malfunction (occasional)
3. Loose or disconnected internal cables (occasional)
4. Faulty low voltage power supply (occasional)
5. Damaged Control board connectors and/or malfunctioning Control board (occasional)
6. Shorts or disconnects on Power Supply/RF board (occasional)
7. Faulty power switch (rare)
8. Malfunctioning front panel components (rare)

8 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Generator malfunction high voltage

Generator stops functioning or fails self-test; visible physical damage, loose cords, or damaged casing suspected

Ranked causes

1. Visible physical damage to generator housing (occasional)
2. Accessory cords not properly connected (common)
3. Power cord damage or exposed wires (occasional)
4. Fuses damaged or loosely seated (common)

First check

Inspect generator for visible physical damage

Test point: Entire chassis exterior
Expected: No cracks, dents, burn marks, or visible damage

3 more checks with pass and fail actions, 4 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Interference with other devices when generator is activated patient safety

Other equipment experiences electromagnetic interference only during electrosurgical activation

Ranked causes

1. Metal-to-metal sparking (common)
2. High settings used for fulguration (common)
3. Electrically inconsistent ground wires in operating room (occasional)
4. Monitor responding to radiated frequencies (occasional)

4 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Internal component damage on circuit boards high voltage

Visible damage, cracks, corrosion, or broken wires detected on internal circuit boards after cover removal

Ranked causes

1. Damaged Control board (rare)
2. Damaged Display board (rare)
3. Damaged Footswitch board (internal) (rare)
4. Severe damage on Power Supply/RF board (rare)

First check

Remove cover and inspect all boards for damage

Test point: All internal circuit boards (Control, Display, Footswitch, Power Supply/RF)
Expected: No damaged components, no broken wires, no cracks, no corrosion visible on any board

1 more check with pass and fail actions, 4 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Mode buttons do not function correctly when pressed

Front panel mode buttons fail to change operating modes or show no response

Ranked causes

1. Faulty ribbon cable between Control board and Display board (common)
2. Incorrect modes communicated through Control board (occasional)
3. Faulty ribbon cable between front panel and Display board (occasional)
4. Incorrect modes communicated from front panel (occasional)

4 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Abnormal neuromuscular stimulation during surgery patient safety

Patient displays involuntary muscle contractions or abnormal stimulation during procedure; requires immediate cessation of surgery

Ranked causes

1. Metal-to-metal sparking (common)
2. High power setting during coagulation (common)
3. Abnormal 50-60 Hz leakage currents (occasional)

3 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Activation and alarm tones do not sound

Speaker produces no audio output for activation tones or alarm alerts

Ranked causes

1. Poor connection or damaged Footswitch board ribbon cable (common)
2. Faulty connections or speaker on Footswitch board (occasional)
3. Audio signal malfunction on Control board (occasional)

3 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Alarm 212 appears in Cut display during self-test

Specific error code 212 displayed during power-on self-test sequence

Ranked causes

1. Battery removed or replaced without generator calibration (common)
2. Faulty battery on Control board causing loss of battery-backed memory (occasional)
3. Loss of battery-backed RAM due to faulty component on Control board (rare)

3 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Blank or confusing LED display

Display board shows garbled, missing, or incorrect information

Ranked causes

1. Faulty ribbon cable between Control board and Display board (common)
2. Incorrect display modes communicated through Control board (occasional)
3. Display board malfunction (occasional)

3 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Continuous monitor interference patient safety

Cardiac monitor displays noise or artifacts continuously regardless of generator activation

Ranked causes

1. Faulty chassis-to-ground connections (common)
2. Electrical equipment grounded to different objects (occasional)
3. Malfunctioning monitor (occasional)

3 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

T_ON ASIC malfunction alarm high voltage

Generator displays an alarm number related to T_ON ASIC malfunction during or after self-test

Ranked causes

1. Programmable IC U9 pins not properly seated in socket (common)
2. Programmable IC U9 defective or failed (occasional)
3. Control board defective or failed (rare)

First check

Verify IC U9 pins seated properly in socket on Control board

Test point: IC U9 socket
Expected: All pins fully inserted and aligned

3 more checks with pass and fail actions, 3 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Battery-backed RAM malfunction indicated high voltage

Alarm number appears, indicating memory corruption or loss in battery-backed RAM; requires battery replacement and recalibration

Ranked causes

1. Battery depleted or failed (common)
2. Control board defective (occasional)

First check

Turn off generator and disconnect power cord

Test point: Main power connector
Expected: Power disconnected, wait 5 minutes minimum

10 more checks with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Footswitch will not activate output

Footswitch fails to trigger electrosurgical output generation

Ranked causes

1. Malfunctioning or damaged footswitch receptacle (common)
2. Footswitch activation signal lost on Control board (occasional)

2 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Pacemaker interference patient safety

Pacemaker malfunction or inappropriate sensing triggered by electrosurgery

Ranked causes

1. Intermittent connections or metal-to-metal sparking (common)
2. Current path too close to pacemaker during monopolar electrosurgery (occasional)

3 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

REM indicator illuminates red patient safety

REM Polyhesive Patient Return Electrode not properly applied or not connected to generator

Ranked causes

1. REM Patient Return Electrode not properly applied to patient (common)
2. REM Patient Return Electrode not connected to generator (common)

2 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration procedure notice: Minimum load resistor thresholds caution

Equipment damage will result if generator activated with load resistor below specified threshold during calibration

Ranked causes

1. Exceeding maximum output power into low impedance load during calibration (common)

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration value out of acceptable range

Alarm 120 displayed; calibration value exceeds acceptable limits

Ranked causes

1. Calibration procedure failed or sensor malfunction (occasional)

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Cover removal and reinstallation high voltage

Procedure for accessing internal generator components by removing and reinstalling the generator cover

Ranked causes

1. Access required for internal component inspection (common)

First check

Cover removal

Test point: Cover fastening screws
Expected: All five screws removed and cover lifts clear of chassis

1 more check with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Display board seven-segment LED failure

Seven-segment LED on display board is non-functional, dim, or discolored

Ranked causes

1. LED worn out or defective (unknown)

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Dosage error during diagnostics caution

Alarm 160 displayed; internal dosage test failed with ADC values shown

Ranked causes

1. ECON factor out of calibration or ADC malfunction (occasional)

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Fan replacement caution

Fan requires replacement on Power Supply/RF board assembly

Ranked causes

1. Fan failure or wear (unknown)

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Flash memory CRC test failed caution

Alarm 183-185 displayed; Flash memory CRC test failed in main or feedback microcontroller

Ranked causes

1. Flash memory corruption or microcontroller failure (rare)

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Fuse blown in fuse drawer caution

Generator loses power or protection circuit trips; fuses in the drawer below power cord receptacle are open or damaged.

Ranked causes

1. Blown fuse in fuse drawer (120 V or 240 V operation) (common)

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Fuse blown on Power Supply/RF board high voltage

Generator fails to operate; fuse on internal Power Supply/RF board is blown or open.

Ranked causes

1. Blown fuse on Power Supply/RF board (common)

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Generator fails internal diagnostics at startup caution

Alarm 4 displayed; main microcontroller CPU test failed during power-up

Ranked causes

1. Control board CPU malfunction (common)

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Loose bipolar instrument receptacle connection caution

Bipolar instrument connector fits loosely into front panel receptacle; instrument operation may be unreliable

Ranked causes

1. Worn or damaged bipolar instrument receptacle (occasional)

First check

Test bipolar instrument connector fit in front panel receptacle

Test point: Bipolar Instrument receptacle on front panel
Expected: Footswitching and handswitching instrument connectors insert securely with no movement

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Loose footswitch receptacle connection caution

Footswitch connector fits loosely into rear panel receptacles; footswitching may be unreliable

Ranked causes

1. Worn or damaged footswitch receptacle contacts (occasional)

First check

Test bipolar footswitch receptacle fit

Test point: Three footswitch receptacles on rear panel
Expected: Bipolar footswitch connector inserts securely with no movement or looseness

1 more check with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Loose monopolar instrument receptacle connection caution

Monopolar instrument connector fits loosely into front panel receptacles; instrument operation may be unreliable

Ranked causes

1. Worn or damaged monopolar instrument receptacle (occasional)

First check

Test monopolar 1/CEM connector fit in front panel receptacle

Test point: Monopolar 1/CEM Instrument receptacle on front panel
Expected: Footswitching and handswitching instrument connectors insert securely with no movement

1 more check with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Microcontroller RAM check failed caution

Alarm 180/181 displayed; internal RAM diagnostic failed on main or feedback microcontroller

Ranked causes

1. RAM memory malfunction in microcontroller (rare)

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Optoisolator internal component failed caution

Alarm 81 displayed; optoisolator component test failed

Ranked causes

1. Optoisolator component failure (rare)

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Patient Return Electrode receptacle damaged patient safety

Receptacle shows visible damage, broken pin, or obstruction; patient return connection compromised

Ranked causes

1. Damaged or obstructed Patient Return Electrode receptacle (rare)

First check

Inspect Patient Return Electrode receptacle

Test point: Patient Return Electrode receptacle on front panel
Expected: No broken pins, no obstructions, clear unobstructed opening

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

REM alarm indicator does not illuminate patient safety

No illumination (red or green) from REM alarm indicator light

Ranked causes

1. Return electrode without REM safety feature connected (common)

First check

Verify REM Polyhesive Patient Return Electrode is connected

Test point: Return electrode type
Expected: REM Polyhesive Patient Return Electrode installed

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

REM alarm indicator flashing red patient safety

REM Polyhesive Patient Return Electrode alarm condition detected; indicator flashes red until corrected

Ranked causes

1. Patient return electrode not properly applied or connected (common)

First check

Verify REM Patient Return Electrode is properly applied to patient

Test point: Patient contact
Expected: Electrode making full contact with patient skin

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

REM alarm indicator illuminates red (steady) patient safety

Indicator shows red light (steady, not flashing) when REM Patient Return Electrode first connected or system alarm present

Ranked causes

1. REM Patient Return Electrode not yet applied to patient (common)

First check

Confirm REM Patient Return Electrode applied and connected

Test point: Electrode connection
Expected: Electrode properly applied to patient and connected to generator

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

REM indicator does not illuminate patient safety

Return electrode connected without REM safety feature

Ranked causes

1. Return electrode without REM safety feature connected (unknown)

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

REM indicator flashes red patient safety

REM system has detected an alarm condition that must be corrected

Ranked causes

1. REM system alarm condition detected (unknown)

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

REM sense circuit open or failed

Alarm 122 displayed; open circuit detected in REM sense line during calibration

Ranked causes

1. Open circuit in REM sense line (occasional)

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

T_ON test fails during diagnostics caution

Alarm 12 or 16 displayed; T_ON timing or average test failed

Ranked causes

1. T_ON ASIC malfunction or calibration error (occasional)

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Error codes

Code	Meaning	Trigger	Severity
`0`	Main microcontroller failed to hold feedback microcontroller in reset	At startup	error
`1`	Main microcontroller failed to power up feedback microcontroller	At startup	error
`10`	Software malfunction - invalid alarm number on serial port	During operation	error
`100`	Software malfunction - rem_update_state outside range	During operation	error
`101`	Software malfunction - rem_pad_state outside range	During operation	error
`102`	Software malfunction - rem_state in re_rem_control outside range	During operation	error
`103`	Software malfunction - rem_state in re_non_rem_control outside range	During operation	error
`104`	Software malfunction - rem_flash_state outside range	During operation	error
`105`	Software malfunction - rem_led_state outside range	During operation	error
`11`	Invalid activated power, function, mode, or key request mode echoed	At startup or during operation	error
`110`	Software malfunction - cal_state outside range in ca_generator_setup	During calibration	error
`111`	Software malfunction - cal_state outside range in ca_clock_date_setup	During calibration	error
`112`	Software malfunction - cal_mode outside range in ca_clock_date_setup	During calibration	error
`113`	Software malfunction - cal_state outside range in ca_clock_time_setup	During calibration	error
`114`	Software malfunction - cal_mode outside range in ca_clock_time_setup	During calibration	error
`115`	Software malfunction - cal_state outside range in ca_coag_leakage_cal	During calibration	error
`116`	Software malfunction - cal_state outside range in ca_econ_cal	During calibration	error
`117`	Software malfunction - econ_cal_state outside range	During calibration	error
`118`	Software malfunction - cal_state outside range in ca_rem_cal	During calibration	error
`119`	Software malfunction - rem_cal_state outside range	During calibration	error
`12`	T_ON_ERR test failed	During startup diagnostics	error
`120`	Calibration value outside acceptable range	During calibration procedure	error
`121`	Software malfunction - cal_mode outside range in ca_generator_setup	During calibration	error
`122`	Open circuit REM sense failure	During calibration	error
`123`	Main microcontroller unable to access GEN_SEM semaphore	At startup or during operation	error
`124`	Main microcontroller unable to access FEEDBACK_SEM semaphore	At startup or during operation	error
`125`	Main microcontroller unable to access ECON_SEM semaphore	At startup or during operation	error
`126`	Main microcontroller unable to access KEY_ACTIVE_SEM semaphore	At startup or during operation	error
`13`	Main microcontroller unable to access GEN_SEM semaphore	At startup	error
`14`	Calibration data checksum error on main microcontroller	At startup	critical
`151`	Main microcontroller unable to access GEN_SEM semaphore	At startup or during operation	error
`152`	Software malfunction - cal_state outside range in cs_i_sns_cal	During calibration	error
`154`	Main microcontroller unable to access FEEDBACK_SEM semaphore	At startup or during operation	error
`16`	T_ON average test failed	During diagnostics	error
`160`	Dosage error test failed with ADC values displayed	During startup diagnostics	error
`170`	Watchdog malfunction - correct value not sent from feedback microcontroller	At startup or during operation	critical
`171`	Watchdog malfunction - correct value not sent from main microcontroller	At startup or during operation	critical
`172`	Watchdog malfunction - main microcontroller unable to access watchdog semaphore	At startup or during operation	error
`173`	Watchdog malfunction - feedback microcontroller unable to access watchdog semaphore	At startup or during operation	error
`174`	Software malfunction - which_errors value outside state range	During operation	error
`180`	Main microcontroller ST Microelectronics RAM check failed	During startup diagnostics	critical
`181`	Feedback microcontroller ST Microelectronics RAM check failed	During startup diagnostics	critical
`182`	Main microcontroller dual-port RAM check failed	During startup diagnostics	critical
`183`	Main microcontroller Page 0 Flash Memory CRC test failed	During startup diagnostics	critical
`184`	Main microcontroller Page F Flash Memory CRC test failed	During startup diagnostics	critical
`185`	Feedback microcontroller Flash Memory CRC test failed	During startup diagnostics	critical
`189`	Software malfunction - display_state outside state range	During operation	error
`190`	Bipolar buttons may be stuck	Internal diagnostics detected stuck bipolar button (up/down arrow, Precise, Standard, or Macro)	warning
`191`	Cut buttons may be stuck	Internal diagnostics detected stuck cut button (up/down arrow, Low, Pure, or Blend)	warning
`192`	Coag buttons may be stuck	Internal diagnostics detected stuck coag button (up/down arrow, Desiccate, Fulgurate, or Spray)	warning
`193`	Recall button may be stuck	Internal diagnostics detected stuck recall button	warning
`194`	Handswitch or Monopolar 1 Footswitch cut pedal stuck	Internal diagnostics detected stuck cut pedal on handswitch or monopolar 1 footswitch	warning
`195`	Handswitch or Monopolar 1 Footswitch coag pedal stuck	Internal diagnostics detected stuck coag pedal on handswitch or monopolar 1 footswitch	warning
`196`	Handswitch or Monopolar 2 Footswitch cut pedal stuck	Internal diagnostics detected stuck cut pedal on handswitch or monopolar 2 footswitch	warning
`197`	Handswitch or Monopolar 2 Footswitch coag pedal stuck	Internal diagnostics detected stuck coag pedal on handswitch or monopolar 2 footswitch	warning
`198`	Handswitch or Bipolar Footswitch pedal stuck	Internal diagnostics detected stuck pedal on handswitch or bipolar footswitch	warning
`199`	Main and feedback microcontrollers not compatible	Internal diagnostics detected incompatible microcontrollers	error
`2`	Feedback microcontroller failed to power up and initialize RAM	At startup	error
`200`	Main microcontroller SEML line may be stuck	Internal diagnostics detected stuck SEML line on main microcontroller	error
`201`	Feedback microcontroller SEMR line may be stuck	Internal diagnostics detected stuck SEMR line on feedback microcontroller	error
`202`	Main microcontroller watchdog test failed	Internal diagnostics watchdog test failed on main microcontroller	error
`203`	Feedback microcontroller watchdog test failed	Internal diagnostics watchdog test failed on feedback microcontroller	error
`206`	Software malfunction in doserr_test_state main value	Software malfunction with doserr_test_state value in st_m_doserr_test outside range	error
`207`	Software malfunction in doserr_test_state feedback value	Software malfunction with doserr_test_state value in st_fb_doserr_test outside range	error
`208`	Main microcontroller timer interrupt failed	Internal diagnostics timer interrupt failed on main microcontroller	critical
`209`	Feedback microcontroller timer interrupt failed	Internal diagnostics timer interrupt failed on feedback microcontroller	critical
`210`	Software malfunction in data_type value	Software malfunction with data_type value outside state range	error
`211`	Software malfunction in which_data value	Software malfunction with which_data value outside state range	error
`212`	Battery removed or replaced	First power-on after battery removal or replacement	info
`212`	Generator not calibrated	Generator lacks calibration data	warning
`213`	Firmware not compatible with hardware	Internal diagnostics detected firmware/hardware incompatibility	error
`215`	Real-time clock chip (U1) not compatible with firmware	Internal diagnostics detected RTC chip incompatibility	error
`216`	Internal memory battery exhausted	Internal battery backing up memory has been depleted	warning
`220`	Feedback microcontroller unable to access KEY_REQ_SEM semaphore	Semaphore access failure on feedback microcontroller	error
`221`	Feedback microcontroller unable to access GEN_SEM semaphore	Semaphore access failure on feedback microcontroller	error
`222`	Main microcontroller failed to copy battery-backed RAM to dual-port RAM	Main microcontroller failed to complete RAM copy in time allotted	error
`223`	Main microcontroller failed to complete initialization in time	Main microcontroller initialization timeout	error
`224`	Calibration data checksum error on feedback microcontroller	Internal diagnostics detected checksum error in calibration data	error
`225`	Feedback microcontroller CPU test failed	Internal diagnostics CPU test failed on feedback microcontroller	critical
`226`	Feedback microcontroller unable to access FEEDBACK_SEM semaphore	Semaphore access failure on feedback microcontroller	error
`230`	Software malfunction in keyed_state value	Software malfunction with keyed_state value outside state range	error
`231`	Software malfunction in key_req_mode value	Software malfunction with key_req_mode value outside state range	error
`232`	Feedback microcontroller unable to access KEY_ACTIVE_SEM semaphore	Semaphore access failure on feedback microcontroller	error
`240`	Software malfunction in activation_seq value	Software malfunction with activation_seq value outside state range	error
`241`	Software malfunction in feedback value in do_feedback()	Software malfunction with feedback value in do_feedback() outside range	error
`242`	Software malfunction in feedback value in do_cal_feedback()	Software malfunction with feedback value in do_cal_feedback() outside range	error
`244`	Software malfunction in disable_seq value	Software malfunction with disable_seq value outside state range	error
`245`	Software malfunction in spark_state value	Software malfunction with spark_state value outside state range	error
`246`	Feedback microcontroller unable to access FEEDBACK_SEM semaphore	Semaphore access failure on feedback microcontroller	error
`247`	Feedback microcontroller unable to access ECON_SEM semaphore	Semaphore access failure on feedback microcontroller	error
`260`	A/D conversion did not complete in allowed time	A/D conversion timeout during operation	critical
`261`	Delay time out of bounds on main microcontroller	Software malfunction with delay time out of bounds	error
`262`	Delay time out of bounds on feedback microcontroller	Software malfunction with delay time out of bounds	error
`270`	Software malfunction in me_rtc_get_() data type	Software malfunction with data type in me_rtc_get_() outside range	error
`271`	Software malfunction in me_rtc_put_() data type	Software malfunction with data type in me_rtc_put_() outside range	error
`3`	Feedback microcontroller failed checksum battery-backed RAM data	At startup	error
`4`	Main microcontroller CPU test failed	During startup diagnostics	critical
`451`	Internal temperature limit exceeded	Length of activation time caused internal temperature to exceed limit	critical
`5`	Main microcontroller unable to access FEEDBACK_SEM semaphore	At startup or during operation	error
`6`	Main microcontroller unable to access ECON_SEM semaphore	At startup	error
`68`	Main microcontroller unable to access GEN_SEM semaphore	At startup or during operation	error
`69`	Software malfunction - flash_power_state value outside range	During operation	error
`7`	Main microcontroller unable to access KEY_ACTIVE_SEM semaphore	At startup	error
`70`	Software malfunction - key_req_mode value outside range	During operation	error
`71`	Software malfunction - request+1 value outside range	During operation	error
`80`	Software malfunction - *input[i].p_state value outside range	During operation	error
`81`	Optoisolator component test failed	During startup diagnostics	critical
`90`	Generator model number in Flash Memory incorrect	At startup	error
`95`	Generator model number in Flash Memory incorrect	At startup	error
`ECON display error`	ECON calibration display did not change as expected after footswitch activation	After activating bipolar, cut, or coag output with footswitch	error

Likely causes and actions for each code are in ServiceForge. Connect ServiceForge to your AI

Community

0 fixes logged by technicians through their AI, with outcomes, for this model.

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