What are Midmark M3 Error Codes C630 – C675?
Understanding the error codes that may arise while using any autoclave is crucial for ensuring its optimal performance and reliability. So in
this article, we will delve into some of the various error codes of the Midmark M3 compact autoclave. Specifically, we’ll look at Error Codes C630 – C675. Deciphering these signals isn’t just about fixing a problem; it’s about ensuring uninterrupted workflow, safeguarding patient and user safety, and preventing costly downtime or potential compliance issues. So we’ll go over the details of what each code means, as well as actions you can take to troubleshoot them.
If you have any questions about these error codes, the Midmark M3 or anything else, please give us a call at 704-966-1650 Option 3 for our Free Tech Support Line.
Error Code C630
Display/Symptom
POWER UP MODE PRESSURE LOW
ITEMS NOT STERILE TURN POWER OFF/ON
During Heatup Mode, the first vent valve open operation has to occur within 10 minutes.
Cause 1: Low water in reservoir.
Check
Check water level in reservoir.
Action
Fill reservoir with distilled water.
Cause 2: Low water in reservoir not caught by a C23x error.
Check
Check water level / External Tank Display Screen
Action
Replace water level sensor.
Cause 3: Water pump not primed.
Check
Check Water Pump Test Display Screen
Action
Prime water pump.
Cause 4: Steam leakage.
Check
Perform a six point leak check
Action
Repair steam leak.
Cause 5: Chamber temperature sensor not functioning properly.
Check
Perform a Temperature Sensor Resistance Test.
Action
Clean or replace temperature sensor.
Cause 6: Boiler temperature sensor not functioning properly.
Check
Perform a Temperature Sensor Resistance Test.
Action
Replace boiler temperature sensor.
Cause 7: Boiler not functioning properly.
Check
Perform a Boiler Test.
Action
Replace boiler if necessary.
Cause 8: Pressure transducer tubing damaged or disconnected.
Check
Inspect copper & neoprene tubing from chamber to pressure transducer.
Action
Repair or replace tubing, if necessary.
Cause 9: PC Board malfunctioning.
Check
Verify that there are no other ways that pressure could not be transmitted from chamber to pressure transducer.
Action
Replace PC board, if necessary.
Cause 10: Defective check valve in water pump.
Check
Check for large air pocket forming in tubing, that moves from the boiler to water pump.
Action
Replace water pump.
Cause 11: Pressure transducer port in chamber blocked.
Check
Check for obstruction.
Action
Remove obstruction.
Cause 12: Photo interrupter obstructed.
Check
Check the Photo Interruptor.
Action
Clear obstruction and clean. Verify hardware is working back to processor.
Error Code C631
Display/Symptom
SELECT MODE PRESSURE LOW
ITEMS NOT STERILE TURN POWER OFF/ON
During Heatup Mode, the first vent valve open operation has to occur within 10 minutes.
Cause 1: Low water in reservoir.
Check
Check water level in reservoir.
Action
Fill reservoir with distilled water.
Cause 2: Low water in reservoir not caught by a C23x error.
Check
Check water level / External Tank Display Screen
Action
Replace water level sensor.
Cause 3: Water pump not primed.
Check
Check Water Pump Test Display Screen
Action
Prime water pump.
Cause 4: Steam leakage.
Check
Perform a six point leak check
Action
Repair steam leak.
Cause 5: Chamber temperature sensor not functioning properly.
Check
Perform a Temperature Sensor Resistance Test.
Action
Clean or replace temperature sensor.
Cause 6: Boiler temperature sensor not functioning properly.
Check
Perform a Temperature Sensor Resistance Test.
Action
Replace boiler temperature sensor.
Cause 7: Boiler not functioning properly.
Check
Perform a Boiler Test.
Action
Replace boiler if necessary.
Cause 8: Pressure transducer tubing damaged or disconnected.
Check
Inspect copper & neoprene tubing from chamber to pressure transducer.
Action
Repair or replace tubing, if necessary.
Cause 9: PC Board malfunctioning.
Check
Verify that there are no other ways that pressure could not be transmitted from chamber to pressure transducer.
Action
Replace PC board, if necessary.
Cause 10: Defective check valve in water pump.
Check
Check for large air pocket forming in tubing, that moves from the boiler to water pump.
Action
Replace water pump.
Cause 11: Pressure transducer port in chamber blocked.
Check
Check for obstruction.
Action
Remove obstruction.
Cause 12: Photo interrupter obstructed.
Check
Check the Photo Interruptor.
Action
Clear obstruction and clean. Verify hardware is working back to processor.
Error Code C633
Display/Symptom
HEAT UP MODE PRESSURE LOW
ITEMS NOT STERILE TURN POWER OFF/ON
During Heatup Mode, the first vent valve open operation has to occur within 10 minutes.
Cause 1: Low water in reservoir.
Check
Check water level in reservoir.
Action
Fill reservoir with distilled water.
Cause 2: Low water in reservoir not caught by a C23x error.
Check
Check water level / External Tank Display Screen
Action
Replace water level sensor.
Cause 3: Water pump not primed.
Check
Check Water Pump Test Display Screen
Action
Prime water pump.
Cause 4: Steam leakage.
Check
Perform a six point leak check
Action
Repair steam leak.
Cause 5: Chamber temperature sensor not functioning properly.
Check
Perform a Temperature Sensor Resistance Test.
Action
Clean or replace temperature sensor.
Cause 6: Boiler temperature sensor not functioning properly.
Check
Perform a Temperature Sensor Resistance Test.
Action
Replace boiler temperature sensor.
Cause 7: Boiler not functioning properly.
Check
Perform a Boiler Test.
Action
Replace boiler if necessary.
Cause 8: Pressure transducer tubing damaged or disconnected.
Check
Inspect copper & neoprene tubing from chamber to pressure transducer.
Action
Repair or replace tubing, if necessary.
Cause 9: PC Board malfunctioning.
Check
Verify that there are no other ways that pressure could not be transmitted from chamber to pressure transducer.
Action
Replace PC board, if necessary.
Cause 10: Defective check valve in water pump.
Check
Check for large air pocket forming in tubing, that moves from the boiler to water pump.
Action
Replace water pump.
Cause 11: Pressure transducer port in chamber blocked.
Check
Check for obstruction.
Action
Remove obstruction.
Cause 12: Photo interrupter obstructed.
Check
Check the Photo Interruptor.
Action
Clear obstruction and clean. Verify hardware is working back to processor.
Error Code C636
Display/Symptom
OPEN MODE PRESSURE LOW
ITEMS NOT STERILE TURN POWER OFF/ON
During Heatup Mode, the first vent valve open operation has to occur within 10 minutes.
Cause 1: Low water in reservoir.
Check
Check water level in reservoir.
Action
Fill reservoir with distilled water.
Cause 2: Low water in reservoir not caught by a C23x error.
Check
Check water level / External Tank Display Screen
Action
Replace water level sensor.
Cause 3: Water pump not primed.
Check
Check Water Pump Test Display Screen
Action
Prime water pump.
Cause 4: Steam leakage.
Check
Perform a six point leak check
Action
Repair steam leak.
Cause 5: Chamber temperature sensor not functioning properly.
Check
Perform a Temperature Sensor Resistance Test.
Action
Clean or replace temperature sensor.
Cause 6: Boiler temperature sensor not functioning properly.
Check
Perform a Temperature Sensor Resistance Test.
Action
Replace boiler temperature sensor.
Cause 7: Boiler not functioning properly.
Check
Perform a Boiler Test.
Action
Replace boiler if necessary.
Cause 8: Pressure transducer tubing damaged or disconnected.
Check
Inspect copper & neoprene tubing from chamber to pressure transducer.
Action
Repair or replace tubing, if necessary.
Cause 9: PC Board malfunctioning.
Check
Verify that there are no other ways that pressure could not be transmitted from chamber to pressure transducer.
Action
Replace PC board, if necessary.
Cause 10: Defective check valve in water pump.
Check
Check for large air pocket forming in tubing, that moves from the boiler to water pump.
Action
Replace water pump.
Cause 11: Pressure transducer port in chamber blocked.
Check
Check for obstruction.
Action
Remove obstruction.
Cause 12: Photo interrupter obstructed.
Check
Check the Photo Interruptor.
Action
Clear obstruction and clean. Verify hardware is working back to processor.
Error Code C637
Display/Symptom
DRY MODE PRESSURE LOW
ITEMS NOT STERILE TURN POWER OFF/ON
During Heatup Mode, the first vent valve open operation has to occur within 10 minutes.
Cause 1: Low water in reservoir.
Check
Check water level in reservoir.
Action
Fill reservoir with distilled water.
Cause 2: Low water in reservoir not caught by a C23x error.
Check
Check water level / External Tank Display Screen
Action
Replace water level sensor.
Cause 3: Water pump not primed.
Check
Check Water Pump Test Display Screen
Action
Prime water pump.
Cause 4: Steam leakage.
Check
Perform a six point leak check
Action
Repair steam leak.
Cause 5: Chamber temperature sensor not functioning properly.
Check
Perform a Temperature Sensor Resistance Test.
Action
Clean or replace temperature sensor.
Cause 6: Boiler temperature sensor not functioning properly.
Check
Perform a Temperature Sensor Resistance Test.
Action
Replace boiler temperature sensor.
Cause 7: Boiler not functioning properly.
Check
Perform a Boiler Test.
Action
Replace boiler if necessary.
Cause 8: Pressure transducer tubing damaged or disconnected.
Check
Inspect copper & neoprene tubing from chamber to pressure transducer.
Action
Repair or replace tubing, if necessary.
Cause 9: PC Board malfunctioning.
Check
Verify that there are no other ways that pressure could not be transmitted from chamber to pressure transducer.
Action
Replace PC board, if necessary.
Cause 10: Defective check valve in water pump.
Check
Check for large air pocket forming in tubing, that moves from the boiler to water pump.
Action
Replace water pump.
Cause 11: Pressure transducer port in chamber blocked.
Check
Check for obstruction.
Action
Remove obstruction.
Cause 12: Photo interrupter obstructed.
Check
Check the Photo Interruptor.
Action
Clear obstruction and clean. Verify hardware is working back to processor.
Error Code C638
Display/Symptom
COMPLETE MODE PRESSURE LOW
ITEMS NOT STERILE TURN POWER OFF/ON
During Heatup Mode, the first vent valve open operation has to occur within 10 minutes.
Cause 1: Low water in reservoir.
Check
Check water level in reservoir.
Action
Fill reservoir with distilled water.
Cause 2: Low water in reservoir not caught by a C23x error.
Check
Check water level / External Tank Display Screen
Action
Replace water level sensor.
Cause 3: Water pump not primed.
Check
Check Water Pump Test Display Screen
Action
Prime water pump.
Cause 4: Steam leakage.
Check
Perform a six point leak check
Action
Repair steam leak.
Cause 5: Chamber temperature sensor not functioning properly.
Check
Perform a Temperature Sensor Resistance Test.
Action
Clean or replace temperature sensor.
Cause 6: Boiler temperature sensor not functioning properly.
Check
Perform a Temperature Sensor Resistance Test.
Action
Replace boiler temperature sensor.
Cause 7: Boiler not functioning properly.
Check
Perform a Boiler Test.
Action
Replace boiler if necessary.
Cause 8: Pressure transducer tubing damaged or disconnected.
Check
Inspect copper & neoprene tubing from chamber to pressure transducer.
Action
Repair or replace tubing, if necessary.
Cause 9: PC Board malfunctioning.
Check
Verify that there are no other ways that pressure could not be transmitted from chamber to pressure transducer.
Action
Replace PC board, if necessary.
Cause 10: Defective check valve in water pump.
Check
Check for large air pocket forming in tubing, that moves from the boiler to water pump.
Action
Replace water pump.
Cause 11: Pressure transducer port in chamber blocked.
Check
Check for obstruction.
Action
Remove obstruction.
Cause 12: Photo interrupter obstructed.
Check
Check the Photo Interruptor.
Action
Clear obstruction and clean. Verify hardware is working back to processor.
Error Code C641
Display/Symptom
SELECT MODE PRESSURE HIGH
ITEMS NOT STERILE PUSH STOP TO RESTART
The gauge pressure in the chamber is greater than 2.0 PSIg (13.8 kPag) when it should be near zero.
Cause 1: Steam not being released from chamber.
Check A
Check for obstruction in plastic tube connecting unit to external condensing tank.
Action A
Unkink plastic tube, remove obstruction, or replace.
Check B
Check copper coil in external condensing tank for blockage or damage.
Action B
Clear obstruction or replace copper coil.
Check C
Check vent port in chamber for blockage. Check filter for blockage.
Action C
Clear obstruction in vent port. Clean or replace filter.
Check D
Check vent valve for blockage. Put unit into Service Diagnostics and check vent valve operation.
Action D
Clean or replace vent valve.
Cause 2: Pressure is being read abnormally high by pressure transducer.
Check
Check the Chamber Pressure Display Screen.
Action
Replace PC board, if necessary.
Error Code C642
Display/Symptom
CLOSE MODE PRESSURE HIGH
ITEMS NOT STERILE PUSH STOP TO RESTART
The gauge pressure in the chamber is greater than 2.0 PSIg (13.8 kPag) when it should be near zero.
Cause 1: Steam not being released from chamber.
Check A
Check for obstruction in plastic tube connecting unit to external condensing tank.
Action A
Unkink plastic tube, remove obstruction, or replace.
Check B
Check copper coil in external condensing tank for blockage or damage.
Action B
Clear obstruction or replace copper coil.
Check C
Check vent port in chamber for blockage. Check filter for blockage.
Action C
Clear obstruction in vent port. Clean or replace filter.
Check D
Check vent valve for blockage. Put unit into Service Diagnostics and check vent valve operation.
Action D
Clean or replace vent valve.
Cause 2: Pressure is being read abnormally high by pressure transducer.
Check
Check the Chamber Pressure Display Screen.
Action
Replace PC board, if necessary.
Error Code C645
Display/Symptom
VENT MODE PRESSURE HIGH
ITEMS NOT STERILE PUSH STOP TO RESTART
The gauge pressure in the chamber is greater than 2.0 PSIg (13.8 kPag) when it should be near zero.
Cause 1: Steam not being released from chamber.
Check A
Check for obstruction in plastic tube connecting unit to external condensing tank.
Action A
Unkink plastic tube, remove obstruction, or replace.
Check B
Check copper coil in external condensing tank for blockage or damage.
Action B
Clear obstruction or replace copper coil.
Check C
Check vent port in chamber for blockage. Check filter for blockage.
Action C
Clear obstruction in vent port. Clean or replace filter.
Check D
Check vent valve for blockage. Put unit into Service Diagnostics and check vent valve operation.
Action D
Clean or replace vent valve.
Cause 2: Pressure is being read abnormally high by pressure transducer.
Check
Check the Chamber Pressure Display Screen.
Action
Replace PC board, if necessary.
Error Code C646
Display/Symptom
OPEN MODE PRESSURE HIGH
ITEMS NOT STERILE PUSH STOP TO RESTART
The gauge pressure in the chamber is greater than 2.0 PSIg (13.8 kPag) when it should be near zero.
Cause 1: Steam not being released from chamber.
Check A
Check for obstruction in plastic tube connecting unit to external condensing tank.
Action A
Unkink plastic tube, remove obstruction, or replace.
Check B
Check copper coil in external condensing tank for blockage or damage.
Action B
Clear obstruction or replace copper coil.
Check C
Check vent port in chamber for blockage. Check filter for blockage.
Action C
Clear obstruction in vent port. Clean or replace filter.
Check D
Check vent valve for blockage. Put unit into Service Diagnostics and check vent valve operation.
Action D
Clean or replace vent valve.
Cause 2: Pressure is being read abnormally high by pressure transducer.
Check
Check the Chamber Pressure Display Screen.
Action
Replace PC board, if necessary.
Error Code C647
Display/Symptom
DRY MODE PRESSURE HIGH
ITEMS NOT STERILE PUSH STOP TO RESTART
The gauge pressure in the chamber is greater than 2.0 PSIg (13.8 kPag) when it should be near zero.
Cause 1: Steam not being released from chamber.
Check A
Check for obstruction in plastic tube connecting unit to external condensing tank.
Action A
Unkink plastic tube, remove obstruction, or replace.
Check B
Check copper coil in external condensing tank for blockage or damage.
Action B
Clear obstruction or replace copper coil.
Check C
Check vent port in chamber for blockage. Check filter for blockage.
Action C
Clear obstruction in vent port. Clean or replace filter.
Check D
Check vent valve for blockage. Put unit into Service Diagnostics and check vent valve operation.
Action D
Clean or replace vent valve.
Cause 2: Pressure is being read abnormally high by pressure transducer.
Check
Check the Chamber Pressure Display Screen.
Action
Replace PC board, if necessary.
Error Code C648
Display/Symptom
COMPLETE MODE PRESSURE HIGH
ITEMS NOT STERILE PUSH STOP TO RESTART
The gauge pressure in the chamber is greater than 2.0 PSIg (13.8 kPag) when it should be near zero.
Cause 1: Steam not being released from chamber.
Check A
Check for obstruction in plastic tube connecting unit to external condensing tank.
Action A
Unkink plastic tube, remove obstruction, or replace.
Check B
Check copper coil in external condensing tank for blockage or damage.
Action B
Clear obstruction or replace copper coil.
Check C
Check vent port in chamber for blockage. Check filter for blockage.
Action C
Clear obstruction in vent port. Clean or replace filter.
Check D
Check vent valve for blockage. Put unit into Service Diagnostics and check vent valve operation.
Action D
Clean or replace vent valve.
Cause 2: Pressure is being read abnormally high by pressure transducer.
Check
Check the Chamber Pressure Display Screen.
Action
Replace PC board, if necessary.
Error Code C660
Display/Symptom
POWER UP MODE PRESSURE HARDWARE
ITEMS NOT STERILE TURN POWER OFF/ON
A/D converter reports a gauge pressure input value outside the normal limits.
Cause 1: Electrical interruption.
Check
If error is intermittent.
Action
None. Ignore code
Cause 2: PC Board malfunctioning.
Check
If error is persistent, then a problem exists.
Action
Replace PC board, if necessary.
Error Code C661
Display/Symptom
SELECT MODE PRESSURE HARDWARE
ITEMS NOT STERILE TURN POWER OFF/ON
A/D converter reports a gauge pressure input value outside the normal limits.
Cause 1: Electrical interruption.
Check
If error is intermittent.
Action
None. Ignore code
Cause 2: PC Board malfunctioning.
Check
If error is persistent, then a problem exists.
Action
Replace PC board, if necessary.
Error Code C662
Display/Symptom
CLOSE MODE PRESSURE HARDWARE
ITEMS NOT STERILE TURN POWER OFF/ON
A/D converter reports a gauge pressure input value outside the normal limits.
Cause 1: Electrical interruption.
Check
If error is intermittent.
Action
None. Ignore code
Cause 2: PC Board malfunctioning.
Check
If error is persistent, then a problem exists.
Action
Replace PC board, if necessary.
Error Code C663
Display/Symptom
HEAT UP MODE PRESSURE HARDWARE
ITEMS NOT STERILE TURN POWER OFF/ON
A/D converter reports a gauge pressure input value outside the normal limits.
Cause 1: Electrical interruption.
Check
If error is intermittent.
Action
None. Ignore code
Cause 2: PC Board malfunctioning.
Check
If error is persistent, then a problem exists.
Action
Replace PC board, if necessary.
Error Code C664
Display/Symptom
STERILIZE MODE PRESSURE HARDWARE
ITEMS NOT STERILE TURN POWER OFF/ON
A/D converter reports a gauge pressure input value outside the normal limits.
Cause 1: Electrical interruption.
Check
If error is intermittent.
Action
None. Ignore code
Cause 2: PC Board malfunctioning.
Check
If error is persistent, then a problem exists.
Action
Replace PC board, if necessary.
Error Code C665
Display/Symptom
VENT MODE PRESSURE HARDWARE
ITEMS NOT STERILE TURN POWER OFF/ON
A/D converter reports a gauge pressure input value outside the normal limits.
Cause 1: Electrical interruption.
Check
If error is intermittent.
Action
None. Ignore code
Cause 2: PC Board malfunctioning.
Check
If error is persistent, then a problem exists.
Action
Replace PC board, if necessary.
Error Code C666
Display/Symptom
OPEN MODE PRESSURE HARDWARE
ITEMS NOT STERILE TURN POWER OFF/ON
A/D converter reports a gauge pressure input value outside the normal limits.
Cause 1: Electrical interruption.
Check
If error is intermittent.
Action
None. Ignore code
Cause 2: PC Board malfunctioning.
Check
If error is persistent, then a problem exists.
Action
Replace PC board, if necessary.
Error Code C667
Display/Symptom
DRY MODE PRESSURE HARDWARE
ITEMS NOT STERILE TURN POWER OFF/ON
A/D converter reports a gauge pressure input value outside the normal limits.
Cause 1: Electrical interruption.
Check
If error is intermittent.
Action
None. Ignore code
Cause 2: PC Board malfunctioning.
Check
If error is persistent, then a problem exists.
Action
Replace PC board, if necessary.
Error Code C668
Display/Symptom
COMPLETE MODE PRESSURE HARDWARE
ITEMS NOT STERILE TURN POWER OFF/ON
A/D converter reports a gauge pressure input value outside the normal limits.
Cause 1: Electrical interruption.
Check
If error is intermittent.
Action
None. Ignore code
Cause 2: PC Board malfunctioning.
Check
If error is persistent, then a problem exists.
Action
Replace PC board, if necessary.
Error Code C670
Display/Symptom
POWER UP MODE PRESSURE OVER LIMIT
ITEMS NOT STERILE PUSH STOP TO RESTART
Gauge chamber pressure greater than 40 PSI (275.8 kPa).
Cause 1: Steam not being released from chamber.
Check A
Check for obstruction in plastic tube connecting unit to external condensing tank.
Action A
Unkink plastic tube, remove obstruction, or replace.
Check B
Check copper coil in external condensing tank for blockage or damage.
Action B
Clear obstruction or replace copper coil.
Check C
Check vent port in chamber for blockage. Check filter for blockage.
Action C
Clear obstruction in vent port. Clean or replace filter.
Check D
Check vent valve for blockage. Put unit into Service Diagnostics and check vent valve operation.
Action D
Clean or replace vent valve.
Cause 2: Chamber temperature sensor not functioning properly.
Check
Perform a Temperature Sensor Resistance Test.
Action
Clean or replace chamber temperature sensor.
Cause 3: Boiler temperature sensor not functioning properly.
Check
Perform a Temperature Sensor Resistance Test.
Action
Replace boiler temperature sensor.
Cause 4: PC Board is not processing temperature input(s) properly.
Check
Verify temperature sensors are working properly.
Action
Replace PC board, if necessary.
Error Code C671
Display/Symptom
SELECT MODE PRESSURE OVER LIMIT
ITEMS NOT STERILE PUSH STOP TO RESTART
Gauge chamber pressure greater than 40 PSI (275.8 kPa).
Cause 1: Steam not being released from chamber.
Check A
Check for obstruction in plastic tube connecting unit to external condensing tank.
Action A
Unkink plastic tube, remove obstruction, or replace.
Check B
Check copper coil in external condensing tank for blockage or damage.
Action B
Clear obstruction or replace copper coil.
Check C
Check vent port in chamber for blockage. Check filter for blockage.
Action C
Clear obstruction in vent port. Clean or replace filter.
Check D
Check vent valve for blockage. Put unit into Service Diagnostics and check vent valve operation.
Action D
Clean or replace vent valve.
Cause 2: Chamber temperature sensor not functioning properly.
Check
Perform a Temperature Sensor Resistance Test.
Action
Clean or replace chamber temperature sensor.
Cause 3: Boiler temperature sensor not functioning properly.
Check
Perform a Temperature Sensor Resistance Test.
Action
Replace boiler temperature sensor.
Cause 4: PC Board is not processing temperature input(s) properly.
Check
Verify temperature sensors are working properly.
Action
Replace PC board, if necessary.
Error Code C671
Display/Symptom
SELECT MODE PRESSURE OVER LIMIT
ITEMS NOT STERILE PUSH STOP TO RESTART
Gauge chamber pressure greater than 40 PSI (275.8 kPa).
Cause 1: Steam not being released from chamber.
Check A
Check for obstruction in plastic tube connecting unit to external condensing tank.
Action A
Unkink plastic tube, remove obstruction, or replace.
Check B
Check copper coil in external condensing tank for blockage or damage.
Action B
Clear obstruction or replace copper coil.
Check C
Check vent port in chamber for blockage. Check filter for blockage.
Action C
Clear obstruction in vent port. Clean or replace filter.
Check D
Check vent valve for blockage. Put unit into Service Diagnostics and check vent valve operation.
Action D
Clean or replace vent valve.
Cause 2: Chamber temperature sensor not functioning properly.
Check
Perform a Temperature Sensor Resistance Test.
Action
Clean or replace chamber temperature sensor.
Cause 3: Boiler temperature sensor not functioning properly.
Check
Perform a Temperature Sensor Resistance Test.
Action
Replace boiler temperature sensor.
Cause 4: PC Board is not processing temperature input(s) properly.
Check
Verify temperature sensors are working properly.
Action
Replace PC board, if necessary.
Error Code C673
Display/Symptom
HEAT UP MODE PRESSURE OVER LIMIT
ITEMS NOT STERILE PUSH STOP TO RESTART
Gauge chamber pressure greater than 40 PSI (275.8 kPa).
Cause 1: Steam not being released from chamber.
Check A
Check for obstruction in plastic tube connecting unit to external condensing tank.
Action A
Unkink plastic tube, remove obstruction, or replace.
Check B
Check copper coil in external condensing tank for blockage or damage.
Action B
Clear obstruction or replace copper coil.
Check C
Check vent port in chamber for blockage. Check filter for blockage.
Action C
Clear obstruction in vent port. Clean or replace filter.
Check D
Check vent valve for blockage. Put unit into Service Diagnostics and check vent valve operation.
Action D
Clean or replace vent valve.
Cause 2: Chamber temperature sensor not functioning properly.
Check
Perform a Temperature Sensor Resistance Test.
Action
Clean or replace chamber temperature sensor.
Cause 3: Boiler temperature sensor not functioning properly.
Check
Perform a Temperature Sensor Resistance Test.
Action
Replace boiler temperature sensor.
Cause 4: PC Board is not processing temperature input(s) properly.
Check
Verify temperature sensors are working properly.
Action
Replace PC board, if necessary.
Error Code C674
Display/Symptom
STERILIZE MODE PRESSURE OVER LIMIT
ITEMS NOT STERILE PUSH STOP TO RESTART
Gauge chamber pressure greater than 40 PSI (275.8 kPa).
Cause 1: Steam not being released from chamber.
Check A
Check for obstruction in plastic tube connecting unit to external condensing tank.
Action A
Unkink plastic tube, remove obstruction, or replace.
Check B
Check copper coil in external condensing tank for blockage or damage.
Action B
Clear obstruction or replace copper coil.
Check C
Check vent port in chamber for blockage. Check filter for blockage.
Action C
Clear obstruction in vent port. Clean or replace filter.
Check D
Check vent valve for blockage. Put unit into Service Diagnostics and check vent valve operation.
Action D
Clean or replace vent valve.
Cause 2: Chamber temperature sensor not functioning properly.
Check
Perform a Temperature Sensor Resistance Test.
Action
Clean or replace chamber temperature sensor.
Cause 3: Boiler temperature sensor not functioning properly.
Check
Perform a Temperature Sensor Resistance Test.
Action
Replace boiler temperature sensor.
Cause 4: PC Board is not processing temperature input(s) properly.
Check
Verify temperature sensors are working properly.
Action
Replace PC board, if necessary.
Error Code C675
Display/Symptom
VENT MODE PRESSURE OVER LIMIT
ITEMS NOT STERILE PUSH STOP TO RESTART
Gauge chamber pressure greater than 40 PSI (275.8 kPa).
Cause 1: Steam not being released from chamber.
Check A
Check for obstruction in plastic tube connecting unit to external condensing tank.
Action A
Unkink plastic tube, remove obstruction, or replace.
Check B
Check copper coil in external condensing tank for blockage or damage.
Action B
Clear obstruction or replace copper coil.
Check C
Check vent port in chamber for blockage. Check filter for blockage.
Action C
Clear obstruction in vent port. Clean or replace filter.
Check D
Check vent valve for blockage. Put unit into Service Diagnostics and check vent valve operation.
Action D
Clean or replace vent valve.
Cause 2: Chamber temperature sensor not functioning properly.
Check
Perform a Temperature Sensor Resistance Test.
Action
Clean or replace chamber temperature sensor.
Cause 3: Boiler temperature sensor not functioning properly.
Check
Perform a Temperature Sensor Resistance Test.
Action
Replace boiler temperature sensor.
Cause 4: PC Board is not processing temperature input(s) properly.
Check
Verify temperature sensors are working properly.
Action
Replace PC board, if necessary.
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