Endoscope reprocessors

Advanced Sterilization Products AER: troubleshooting and error codes

The ServiceForge knowledge base holds 75 documented symptoms for the Advanced Sterilization Products AER, with 189 ranked causes, 177 diagnostic checks with test points and expected values, and 11 error codes. Each symptom below shows its causes and the first check; the rest is one connection away. Connect ServiceForge to your AI

Symptoms

No soap injection into basin

Soap does not flow into basin during wash cycle despite soap supply being available

Ranked causes

1. Soap bottle empty or disconnected (common)
2. Soap bottle hose connection loose (common)
3. Soap injector inlet/outlet hose kinked or loose (common)
4. Soap injector port disconnected (common)
5. Basin soap injector port clogged (occasional)
6. Lid sensor switch malfunction (occasional)
7. Soap injector air lock (occasional)
8. Soap injector power or electrical fault (occasional)
9. Soap injector harness disconnected (occasional)

First check

Inspect soap bottle level

Test point: Soap bottle
Expected: Soap bottle filled with soap

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

Code E06 - Insufficient fresh water flow to basin

Fresh water not flowing into basin in adequate amounts; backup timer shut off before basin float switch activated.

Ranked causes

1. Kinked or blocked water supply hose (common)
2. Clogged or blocked basin float switch or canister (common)
3. Water flow inadequate or hose kinked (common)
4. Basin level float sensor malfunction (occasional)
5. Tap water supply valve obstruction (occasional)
6. Low water supply pressure (occasional)
7. Water filtration system blocked or clogged (occasional)
8. Water inlet valve blockage or failure (occasional)

First check

Check water supply hose for kinks or blockage

Test point: Water supply hose full length
Expected: Hose straight and clear

4 more checks with pass and fail actions, 8 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

No air circulation

No air flow detected during operation; compressor or air delivery not functioning

Ranked causes

1. Compressor malfunction (common)
2. Blocked endoscope channels (common)
3. Tubing connection failure (common)
4. Control panel not responding (occasional)
5. Compressor capacitor failure (occasional)
6. Relief valve adjustment incorrect (occasional)
7. Channel valve malfunction (occasional)

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

No circulation of liquid through endoscope channels

Liquid delivery to endoscope channels not functioning

Ranked causes

1. Tubing connection failure at adapters (common)
2. Quick release coupling disconnection (common)
3. Tubing kinked or blocked (common)
4. Tubing connected to wrong endoscope (occasional)
5. Main pump malfunction (occasional)
6. Main pump valve failure (occasional)
7. Channel valve malfunction (occasional)

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

Cycle does not start when START is pressed

Reprocessor cycle fails to initiate when START button pressed

Ranked causes

1. Lid not properly closed or interlock disengaged (common)
2. Disinfectant reservoir level insufficient (common)
3. Reset switch position incorrect (occasional)
4. Control panel harness or connector issue (occasional)
5. P1/P2 or controller connector problem (occasional)
6. Control panel membrane defective (rare)

First check

Verify lid closure

Expected: Lid fully closed and interlock engaged

1 more check with pass and fail actions, 6 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Low disinfectant level alert (Code E05) patient safety

Display shows fewer than 3.5 or 4.5 gallons remaining in reservoir depending on model

Ranked causes

1. Waste valve not closing completely (common)
2. Float switch defective (top of reservoir) (occasional)
3. Float switch defective (bottom of reservoir) (occasional)
4. V1 valve obstruction or malfunction (occasional)
5. Main pump obstruction or failure (occasional)
6. V6 waste valve seal failure (occasional)

First check

Check input light 0012 status

Test point: Input light 0012
Expected: Not lit (normal); lit indicates float switch defect

4 more checks with pass and fail actions, 6 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Basin does not fill with water caution

Endoscope reprocessor basin fails to fill with water during cycle

Ranked causes

1. Water source not connected or turned off (common)
2. Lid sensor switch malfunction (occasional)
3. Basin level switch malfunction (occasional)
4. Tap water valve malfunction or blocked (occasional)
5. Water filtration system clogged (occasional)

First check

Verify water source is on and supply line connected

Test point: water inlet connection and source valve
Expected: water on, hose connected and not kinked

4 more checks with pass and fail actions, 5 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Code E01 displayed

High level warning switch activated; disinfectant reservoir may be too full or disinfectant mixing with water from tap water valve or reservoir valve

Ranked causes

1. Disinfectant reservoir too full (unknown)
2. Disinfectant diluted with tap water (unknown)
3. High level float switch stuck (unknown)
4. V4 tap water valve defective (unknown)
5. V7 fill tank/disinfectant reservoir valve defective (unknown)

First check

Customer test strips failing

Test point: Test strips
Expected: Pass

4 more checks with pass and fail actions, 5 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Code E03 disinfectant reservoir empty

Disinfectant reservoir is empty; only FILL DISINFECTANT cycle function available

Ranked causes

1. Waste valve stuck open (common)
2. Obstruction in basket strainer or drain (common)
3. Main pump or main pump valve failure (occasional)
4. Disinfectant valve V7 closed or defective (occasional)
5. Float switch defective or clogged (occasional)

First check

Verify E03 error code display

Test point: Reprocessor display
Expected: E03 code shown

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

Disinfectant Not Draining From Basin

Disinfectant fluid remains in basin at end of cycle or manually

Ranked causes

1. Basin strainer or drain blocked with debris (common)
2. Lid sensor switch faulty (occasional)
3. Waste valve faulty (occasional)
4. Main pump or pump valve obstructed (occasional)
5. Drain line kinked (occasional)

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

Machine stops mid-cycle

Endoscope reprocessor stops unexpectedly during a processing cycle

Ranked causes

1. Power supply failure or missing mains power (common)
2. Main power fuse is blown (common)
3. Lid not properly closed (occasional)
4. START button not illuminated or STOP button illuminated (occasional)
5. Control system requires reset (occasional)

First check

Verify 115 VAC mains power at equipment

Test point: Power outlet and equipment input
Expected: 115 VAC present
Tools: Multimeter

4 more checks with pass and fail actions, 5 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Manual air function not working

The manual air dry function on the endoscope reprocessor is not operating

Ranked causes

1. Lid sensor switch fault (common)
2. Air compressor or air valve not functioning (common)
3. Tubing set connection loose at quick release couplings (occasional)
4. Tubing set kinked or pinched (occasional)
5. Blockage in tubing or moisture trap filter (occasional)

First check

Test lid sensor switch operation

Test point: Lid sensor switch contact
Expected: Switch properly detecting lid open/closed
Tools: Visual inspection, multimeter

4 more checks with pass and fail actions, 5 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

No spray action in basin caution

Spray tower not dispensing liquid or not spinning during operation

Ranked causes

1. Spray tower blockage (common)
2. Basin drain or strainer blockage (common)
3. Spray tower not spinning (occasional)
4. Main pump assembly failure (occasional)
5. Spray tower valve failure (rare)

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

Cannot set disinfect time patient safety

System does not allow disinfect time to be entered or set

Ranked causes

1. Disinfect time not entered before cycle start (common)
2. Disinfectant reservoir empty (common)
3. Defective membrane switch or loose connector (rare)
4. Defective input light or control panel circuit (rare)

First check

Verify DISINFECT TIME button accessible

Test point: Control panel DISINFECT TIME button
Expected: Button responsive and input light 0004 illuminated

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

Channels not air purged

Air purge cycle does not deliver air to endoscope channels

Ranked causes

1. Tubing connection or routing problem (common)
2. Air compressor not running (common)
3. Relief valve pressure or air valve issue (occasional)
4. Controller/microprocessor output problem (occasional)

First check

Run manual air cycle with tubing connected

Expected: Air flows to channels

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

Disinfectant Heater Light Not Lit

Heater indicator light is not illuminated on control panel

Ranked causes

1. Heater disconnected or turned off (common)
2. Power off or unit not functioning (occasional)
3. Temperature sensor connection faulty (occasional)
4. Disinfectant reservoir not full (common)

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

Disinfectant Not Entering Basin

Disinfectant not flowing into basin during cycle

Ranked causes

1. Reservoir empty (common)
2. Disinfectant pump or pump valve not working (occasional)
3. Waste valve stuck open (occasional)
4. Lid sensor switch faulty (occasional)

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

Display microprocessor not illuminating

Microprocessor indicator lights do not light on control panel

Ranked causes

1. Display harness connection loose or damaged (common)
2. Control panel connector P1 or P2 loose or damaged (common)
3. Hex display module defective (occasional)
4. Control panel assembly defective (occasional)

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

Error E01: High disinfectant level warning caution

Disinfectant reservoir filled beyond acceptable level or disinfectant diluted with water; high-level float switch activated

Ranked causes

1. Disinfectant reservoir too full (common)
2. Disinfectant diluted with tap water from V4 valve leak (occasional)
3. Disinfectant diluted with tap water from V7 fill/reservoir valve leak (occasional)
4. High-level float switch stuck or defective (occasional)

First check

Verify E01 error reappears

Test point: Error display
Expected: E01 appears again after cycle

3 more checks with pass and fail actions, 6 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

No display on control panel

Control panel display is blank or non-responsive

Ranked causes

1. No power to unit (common)
2. Main power switch off (common)
3. Fuse F1 blown (occasional)
4. Display harness disconnected (occasional)

First check

Verify power is connected to unit

Expected: 115 VAC available at outlet; power cord secured
Tools: Voltmeter

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

No printer output

Printer does not produce paper output when cycle completes

Ranked causes

1. Paper depleted in printer (common)
2. Printer ribbon depleted (common)
3. Printer not connected (common)
4. Software fault (occasional)

First check

Press paper advance button

Test point: Printer paper advance mechanism
Expected: Paper advances through printer

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

Pump or solenoid valve not operating

Component does not activate during cycle; indicator light on controller/microprocessor may or may not be illuminated

Ranked causes

1. Solenoid or pump component is faulty (occasional)
2. Problem in harness, power distribution board, or microprocessor board connections (occasional)
3. Blown fuse in pump circuit (occasional)
4. Sensor warning signal preventing component activation (occasional)

First check

Verify indicator light on controller/microprocessor is illuminated for the component

Test point: Controller/microprocessor display
Expected: Indicator light illuminated during cycle using that component

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

Service Box operation creates electrical shock or disinfectant contact hazard high voltage

Liquid transferred to inappropriate places due to Service Box overriding safety switches during troubleshooting

Ranked causes

1. Service Box switches left in ON position before connection or after use (common)
2. Lid open during Service Box operation allowing spray tower activation (common)
3. Basin overflow from bypassed float switch (common)
4. Pump run dry from empty reservoir (occasional)

First check

Verify all Service Box switches are in OFF position

Test point: Service Box switches
Expected: All switches in down (OFF) position

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

Waste water not draining from basin caution

Basin water not draining or draining improperly

Ranked causes

1. Waste hose kinked or blocked (common)
2. Basin strainer or drain blockage (common)
3. Waste valve failure (occasional)
4. Lid sensor switch malfunction (occasional)

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

Basin float switch not operating correctly

Float unable to move freely in canister, rubbing on inside, or installed incorrectly causing water flow blockage or false level indication

Ranked causes

1. Float stuck or rubbing on canister interior (common)
2. Float clogged or obstructed (occasional)
3. Float installed upside-down (occasional)

First check

Visually inspect float movement in canister

Test point: Float in canister, left rear corner of basin
Expected: Float moves up and down freely without rubbing

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

Code E04 displayed

E04 error code shown; disinfectant reservoir contains fluid preventing FILL DISINFECTANT cycle

Ranked causes

1. Liquid remains in disinfectant reservoir (common)
2. Disinfectant reservoir empty float stuck (occasional)
3. Float switch defective (rare)

First check

Check input light status on C40K board

Test point: C40K board indicator lights
Expected: 0011 lit; 0012 or 0014 not lit

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

Error code E08 displayed

E08 error appears on 387P units with printer; system indicates wash time not entered

Ranked causes

1. Wash time not entered into system (common)
2. Disinfectant reservoir empty (common)
3. Wash time input control malfunction (occasional)

First check

Verify WASH TIME has been entered

Test point: system display or input field
Expected: WASH TIME value is set

5 more checks with pass and fail actions, 7 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Machine does not stop when the lid is lifted

Endoscope reprocessor continues operation when lid is opened instead of stopping immediately

Ranked causes

1. Lid switch light not on when lid is open (common)
2. Magnet on the lid is missing or displaced (occasional)
3. Lid switch magnet connection loose or disconnected (occasional)

First check

Verify lid switch light indicator illuminates when lid is open

Test point: Light indicator (0009) on C40K or microprocessor board
Expected: Light on when lid open
Tools: Visual inspection

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

Water filtration system lights not functioning

Filtration system indicator lights not illuminating

Ranked causes

1. Burned out light bulbs (common)
2. Blown fuses on control unit (common)
3. Power supply issue (occasional)

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

Basin fill to correct level fails

Basin does not fill to appropriate operating level when tap water supply activated

Ranked causes

1. Basin float switch malfunction (occasional)
2. Tap water valve stuck or blocked (occasional)

First check

Observe basin filling process

Test point: Basin water level during fill cycle
Expected: Basin fills to appropriate level before float actuates

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

Code E07 - Power failure during cycle patient safety

Power loss occurred during processing; cycle may be incomplete with residual fluid in chamber.

Ranked causes

1. Power outage during cycle execution (common)
2. Residual fluid in chamber from interrupted cycle (occasional)

First check

Verify utility power is restored

Test point: Power inlet and circuit breaker
Expected: Power present, breaker in ON position

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

Cycle interrupted by lid opening

Active disinfection or wash cycle halts when reprocessor lid is lifted during operation

Ranked causes

1. Operator opens lid during cycle (common)
2. Lid switch malfunction (occasional)

First check

Verify lid is fully closed

Test point: Lid position and magnet alignment
Expected: Lid fully seated with magnet aligned to switch

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

Disinfectant contact hazard from improper reservoir management patient safety

Technician error in handling disinfectant reservoir during Service Box troubleshooting

Ranked causes

1. Disinfectant not drained from reservoir before troubleshooting (common)
2. Water left in reservoir at end of certification without customer notification (occasional)

First check

Verify reservoir is drained before troubleshooting

Test point: Disinfectant reservoir
Expected: Empty or containing only water

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

Harness damaged or disconnected caution

Harnesses show visible damage, are crimped, cut, or connectors are pulled apart

Ranked causes

1. Physical damage to harness from equipment operation or maintenance (occasional)
2. Connector not fully seated or intentionally disconnected (common)

First check

Visually inspect harness for cuts or crimps

Test point: Entire length of harness
Expected: No visible damage, intact insulation

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

Pump or solenoid valve indicator light not illuminated

Controller/microprocessor indicator light for pump or solenoid valve does not light when component should be active

Ranked causes

1. Sensor warning signal present (e.g., lid open) (common)
2. Problem with controller/microprocessor (occasional)

First check

Verify lid is fully closed

Test point: Equipment lid/door
Expected: Closed and latched

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

Associated component does not operate despite indicator on and power present caution

Output indicator illuminates and correct voltage present at connector, but device (valve, pump, etc.) remains inactive

Ranked causes

1. Component internal failure or wiring harness disconnected/damaged (common)

First check

Verify indicator is illuminated

Test point: Channel 1, 3, or 4 indicator light
Expected: Indicator LED lit when component should operate

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

Back-up battery failure

Time and cycle settings lost after power off; back-up battery in Omron controller no longer maintains memory

Ranked causes

1. Back-up battery depleted or failed (typical life 5 years) (occasional)

First check

Measure voltage between controller/microprocessor terminal and COMMON

Test point: controller/microprocessor terminal and COMMON
Expected: no voltage indicates battery is good; 115 VAC indicates battery should be replaced, 0 V (pass); 115 VAC (fail)

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

Back-up battery failure indicated by high voltage at controller terminal high voltage

Back-up battery no longer maintains time and cycle settings; 115 VAC measured across controller/microprocessor terminal and COMMON indicates battery depletion.

Ranked causes

1. Back-up battery end-of-life (5-year life expectancy) (occasional)

First check

Measure voltage between controller/microprocessor terminal and COMMON

Test point: Controller/microprocessor terminal and COMMON
Expected: No voltage (0 VAC)
Tools: Voltmeter or DMM

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

Basin overfilling caution

Endoscope reprocessor basin continues to fill beyond normal level

Ranked causes

1. Tap water valve stuck in open position (common)

First check

Test tap water valve closure

Test point: tap water valve outlet
Expected: valve stops water flow when commanded

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

Calibration: Product Certification

System performance certification procedure following PM, installation, or component replacement

Ranked causes

1. Routine certification required after maintenance or installation (common)

First check

Check for leaks

Test point: System connections and seals
Expected: No visible leaks

6 more checks with pass and fail actions, 7 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Certification adjustment or replacement indicated

System requires adjustment or component replacement if certification procedures reveal performance issues

Ranked causes

1. Defective component or misalignment detected during certification (occasional)

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

Code E02 maximum disinfect cycle count reached

Number of disinfect cycles equals maximum programmed count; only EMPTY DISINFECTANT cycle function available

Ranked causes

1. Disinfect cycle count limit reached (common)

First check

Verify E02 error code display

Test point: Reprocessor display
Expected: E02 code shown

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

Code E04 with proper water drainage needed

E04 displayed when verifying float switch operation after water dislodging procedure

Ranked causes

1. Float switch stuck or defective after dislodging procedure (occasional)

First check

Verify light status after EMPTY cycle

Test point: C40K board lights 0011, 0012, 0013
Expected: 0011 lit; 0012 and 0013 not lit

Cycle time changes not communicated to customer

Service Box troubleshooting may alter cycle times; customer not informed of changes

Ranked causes

1. Technician changes cycle times without documenting or communicating to customer (occasional)

First check

Verify cycle times match original configuration or document changes

Test point: Reprocessor cycle time settings
Expected: Original settings or documented changes recorded

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

Disinfectant approaching replacement

System nearing need for disinfectant replacement; fluid levels low

Ranked causes

1. Disinfectant concentration depleted (common)

First check

Access Service Box and verify fluid drain capability

Test point: Service Box drain port
Expected: Service Box positioned to drain fluids

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

Disinfectant reservoir empty patient safety

Disinfectant level depleted; system cannot execute FILL DISINFECTANT cycle

Ranked causes

1. Normal disinfectant consumption during cycles (common)

First check

Verify disinfectant reservoir level

Test point: Disinfectant reservoir visual indicator
Expected: Reservoir above minimum level

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

Disinfectant reservoir leaks caution

Fluid leaks from replacement reservoir during installation or operation; water or disinfectant pooling around reservoir

Ranked causes

1. Defective replacement reservoir (occasional)

First check

Inspect replacement reservoir for leaks before installation

Test point: Replacement reservoir exterior surface
Expected: No water leakage when reservoir filled with water test full reservoir

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

Disinfectant system operation high voltage

Service procedures for disinfectant pump, valves, and associated liquid handling systems

Ranked causes

1. Service Box power and valve control setup for disinfectant circulation (common)

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

Drain disinfectant from reservoir caution

Procedure to evacuate liquid from disinfectant reservoir through service connector

Ranked causes

1. Service maintenance or disinfectant reservoir emptying required (common)

First check

Verify all three required switches are set to ON

Test point: Disinfectant pump, Main pump, Waste Valve switches on Service Box
Expected: All three switches in ON position; disinfectant reservoir valve remains CLOSED

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

Fluid pathway operation during troubleshooting high voltage

Procedure to transfer liquid between points by setting appropriate switches and consulting flow diagram.

Ranked causes

1. Diagnostic testing of fluid handling system (common)

First check

Select fluid pathway

Test point: Flow diagram and Service Box switches
Expected: Correct pathway identified from diagram; all associated switches available

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

Harness or connector damaged caution

Visible cuts, crimps, or pulled-apart connectors on pump/valve harnesses

Ranked causes

1. Harness physically damaged or loose (common)

First check

Visually inspect all harnesses for cuts or crimps

Test point: Harness lengths and routing path
Expected: No visible cuts or crimped insulation

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

Heater element malfunction risk caution

Disinfectant level insufficient to keep heater submerged; heater disable switch activated

Ranked causes

1. Disinfectant level drops below heater element (occasional)

First check

Check disinfectant level relative to heater element

Test point: Disinfectant level in reservoir
Expected: Level above heater element

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

Install show chip for demonstration mode caution

ASP AER systems require a show chip for mock display of WASH, RINSE, DISINFECT, and AIR cycles without water and waste supply connection

Ranked causes

1. System configured for demonstration purposes (unknown)

First check

Disconnect ASP AER from power source

Test point: Power supply
Expected: System powered down

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

Insufficient air flow during air purging caution

Air compressor output pressure is insufficient; reduced air flow during endoscope channel purging cycle

Ranked causes

1. Air compressor output pressure set too low or relief valve requires adjustment (common)

First check

Remove all tubing sets from endoscope channel ports

Test point: Endoscope channel ports
Expected: All tubing sets disconnected

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

Lid switch not detecting closure

Lid switch fails to sense when lid is properly closed; indicator does not turn off

Ranked causes

1. Magnet on lid not fully seated (common)

First check

Verify magnet seating when lid closed

Test point: lid magnet
Expected: magnet fully seated

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

Liquid may be forced back into air compressor caution

When passing air through the reprocessor, liquid can back-flow into the air compressor

Ranked causes

1. Air valve opened before line pressurization (common)

First check

Ensure all Service Box switches are OFF

Test point: Service Box switches
Expected: All OFF

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

Main pump does not operate or flow is inadequate caution

Pump fails to deliver disinfectant fluid; inadequate flow rate or no flow observed when pump should be running

Ranked causes

1. Main pump failure or inadequate performance (occasional)

First check

Verify pump power and fluid supply availability

Test point: Pump motor power connection; disinfectant reservoir level
Expected: Power applied to pump; fluid available in reservoir

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

Microprocessor board replacement required caution

Procedure to remove and replace microprocessor board; device is static sensitive

Ranked causes

1. Microprocessor board hardware failure (unknown)

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

Omron controller replacement required caution

Procedure to remove and replace failed Omron controller on ASP AER endoscope reprocessor

Ranked causes

1. Omron controller hardware failure (unknown)

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

Output indicator does not illuminate

Controller output indicator LED stays off despite command or during expected operation

Ranked causes

1. Controller circuit fault or missing input signal activation (common)

First check

Verify power supply to controller

Test point: Channel 1, 3, or 4 connector terminal
Expected: 115 VAC on channel 1, 24 VDC on channels 3 and 4

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

More symptoms

Power line voltage drops below minimum
Printer does not print or prints faded
Printer output shows fading
Printer paper depleted
Pump running empty causes equipment damage
Relays not functioning for pump control
Replace disinfectant reservoir
Replace microprocessor board
Replace Omron Controller
Reservoir leaks during WASH AND DISINFECT cycle
Service Box connection and operation
Solenoid valve does not operate
System not responding to input commands
Unit does not operate properly
Unit does not operate properly when power line voltage drops

15 more symptoms with ranked causes and checks are in ServiceForge. Connect ServiceForge to your AI

Error codes

Code	Meaning	Trigger	Severity
`E01`	High disinfectant level warning; possible water dilution	High-level float switch activated or test strips fail (indicating dilution)	warning
`E01`	High level warning; disinfectant reservoir too full or disinfectant diluted with water	High level warning switch activated	warning
`E02`	Maximum disinfect cycle count reached	Number of completed disinfect cycles equals programmed maximum limit	warning
`E03`	Disinfectant reservoir empty	Disinfectant level drops below minimum during operation or cycle	error
`E03`	End of cycle status code	Received at completion of certification cycle	info
`E04`	Disinfectant reservoir contains fluid	Liquid present in disinfectant reservoir preventing FILL DISINFECTANT cycle	warning
`E05`	Low disinfectant level in reservoir (fewer than 3.5 or 4.5 gallons remaining)	Disinfectant drops below threshold level depending on model variant	warning
`E06`	Fresh water insufficient flow to basin	Basin float switch not activated before backup timer expiration	error
`E07`	Power failure during cycle	Mains power lost during active processing cycle	warning
`E08`	Wash time not entered or missing disinfectant	System detects WASH TIME parameter is absent or disinfectant reservoir is empty	warning
`E09`	Disinfect time not entered	Disinfect time field left empty before pressing START to begin a cycle	warning

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

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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.