Troubleshooting
|
| Problem |
Symptom |
Probable Cause |
Check |
Correction |
Error Code E001
Power Interruption to PC Control Board |
Shuts Down During Sterilization Cycle |
Overheat Thermostat Activated (Pressure Leak) |
Check For Pressure Leaks
See Panel 1 |
Replace Malfunctioning Component At Pressure Leak |
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Overheat Thermostat Activated (Not Filling Properly) |
Check that Filling Lamp illuminates. Be sure Water Level Sensor is dry |
Replace Water Level Sensor if necessary
M9 WATER LEVEL SENSOR ASSEMBLY
M11 WATER LEVEL SENSOR ASSEMBLY |
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Check that Sterilizer is level |
Adjust Sterilizer to level |
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Bad Electrical Connection(s) |
Check Sterilizer and facility for proper electrical connections |
Tighten/Replace loose connections |
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Faulty Overheat Thermostat (Stuck Open) |
Perform Continuity Check on Thermostat |
Replace Thermostat
M9 OverTemp Thermostat
M11 OverTemp Thermostat |
| |
Shuts Down During Drying Cycle |
Overheat Thermostat Activiated (High input voltage) |
Check facility input voltage. Voltage should not exceed Electrical input of unit |
Adjust the dry cycle time Dip Switches |
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Check Resistance Of Heating Element (Contact us for Normal Resistance ranges |
If resistance is out of limits, replace heating element
M9 Heating Element
M11 Heating Element |
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Faulty Overheat Thermostat (Stuck Open) |
Perform Continuity Check On Thermostat |
Replace Thermostat
M9 OverTemp Thermostat
M11 OverTemp Thermostat |
Error Code 2
Stop Button Pressed During Cycle |
Shuts Down During Cycle |
Stop Button Depressed During Cycle |
|
Restart cycle after beeper signal stops |
Error Code 3
Stop Button Pressed During Cycle |
Shuts Down During Cycle |
On/Standby Button Depressed During Cycle |
|
Restart cycle after beeper signal stops |
Error Code 4
Door Ajar |
Shuts Down During Cycle |
Door Latch Is Not Closed |
Check if Door Latch is engaging Switch |
Adjust Door Latch. Clean/Lubricate Door Latch & Pins |
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Door Switch Connection Loose |
Check Door Switch Connection |
Tighten/Replace Loose Connections |
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Door Switch Malfunctioning |
Perform continuity check on door switch |
Replace Door Switch
M9 Door Switch
M11 Door Switch |
Error Code 5
(Display Pressure Exceeded 35 psi (241 kPA) |
Shuts Down During Sterilization Cycle |
Sterilizer Overloaded |
Check that the chamber is not over loaded with heavy linen packs |
Instruct Operator to reduce load size |
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Bellows Malfunctioning (closing early) |
Bellows should close at 212° F (100° C) |
Replace Bellows
M9 Bellows Assembly
M11 Bellows Assembly |
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Sterilizer Potentionmeters out of calibration and/or dirty temperature sensor |
Clean Temperature Sensor; then check calibration using Presuure Gauge Test Harness |
Perform Temperature/Pressure Potentiometer Adjustment |
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Temperature Sensor Malfunctioning |
Check Calibration |
Replace Temperature Probe Assembly (Temperature Sensor)
M9 Temperature Probe Assembly
M11 Temperature Probe Assembly |
Error Code 6
Display Temperature exceeded 277° F (136° C) |
Shuts Down During Sterilization Cycle |
Slow Pressure Leak |
Check for pressure leaks
See Panel 1 |
Replace malfunctioning component at pressure leak |
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|
Sterilizer Potentionmeters out of calibration and/or dirty temperature sensor |
Clean Temperature Sensor; then check calibration using Pressure Gauge Test Harness |
Perform Temperature/Pressure Potentionmeter Adjustment |
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Temperature Sensor Malfuntioning |
Check Calibration |
Replace Temperature Probe Assembly (Temperature Sensor)
M9 Temperature Probe Assembly
M11 Temperature Probe Assembly |
Error Code 7
Display Pressure Dropped Below 24.5 psi (169 kPA) |
Shuts Down During Sterilization Cycle |
Slow Pressure Leak |
Check for pressure leaks
See Panel 1 |
Replace malfunctioning component at pressure leak |
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Sterilizer Potentionmeters out of calibration and/or dirty temperature sensor |
Clean Temperature Sensor; then check calibration using Pressure Gauge Test Harness |
Perform Temperature/Pressure Potentionmeter Adjustment |
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Temperature Sensor Malfuntioning |
Check Calibration |
Replace Temperature Probe Assembly (Temperature Sensor
M9 Temperature Probe Assembly
M11 Temperature Probe Assembly |
Error Code 8
M9 & M11 Only
(Door Switch Did Not Change Status After Door Solenoid Was Activiated
|
Door Opens At End Of Cycle |
Door Switch Malfunctioning |
Perform Continuity Check on Door Switch--Check For Loose connections |
Replace Door Switch
M9 Door Switch
M11 Door Switch |
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Door Does Not Open At End Of Cycle |
Latch lever & pulse solenoid plunger mechanism malfunctioning |
Perform M9 & M11 Door Opening Test |
Remove any debris or build up from Latch Lever & pulse solenoid mechanism |
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Door Pins & Latch Bracket not functioning properly |
Check for burs on door pins & latch bracket in door |
Remove burs; then clean & lubricate with lithium based grease |
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Zero pressure potentionmeter out of calibration |
Check calibration of zero pressure potentionmeter
Use The Field Service Calibration Kit
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Adjust pressure potentiometer |
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Pulse Solenoid Malfunctioning |
Perform M9/M11 Door Opening Test |
Replace Pulse Solenoid
M9 Pulse Solenoid
M11 Pulse Solenoid |
Error Code 9
(Pressure exceeded 0.9 psi 6.2 kPA during Dry Cycle |
M9/M11 - Door Opens at end of Cycle
M9D/M11D - Door is manually opened at end of cycle |
Zero pressure potentiometer out of calibration |
Check calibration of zero pressure potentiometer
Use The Field Service Calibration Kit
|
Adjust zero pressure potentiometer |
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M9/M11 - Door does not open at end of cycle |
Latch lever & pulse solenoid plunger mechanism malfunctioning |
Perform M9/M11 Door Opening Test |
Remove any debris or build up from latch lever & pulse solenoid mechnanism |
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Door Pins & Latch Bracket not functioning properly |
Check for burs on door pins & latch bracket in door |
Remove burs then clean & lube with lithium based grease |
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Zero pressure potentiometer out of calibration |
Check calibration of zero pressure potentiometer
Use The Field Service Calibration Kit |
Adjust zero pressure potentiometer |
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Door is Closed when error is detected |
Door was closed during Dry Cycle |
|
Inform Operator Not To Shut Door During Dry Cycle |
Error Code 10
(Watchdog timer reset error) |
Sterilizer does not complete cycle |
Control PC Board has had a software/hardware failure |
Disconnect power; then check for disconnected wiring in sterilizer or facility. Connect power and run an additional cycle |
If error code persists, replace control PC board |
Error Code 11
(Software Interrupt Error) |
Sterilizer does not complete cycle |
Control PC board has a software/hardware malfunction |
Disconnect Power for approximately 10 seconds; then reconnect power and run additional cycle |
If error code persists, replace control PC board |
Error Code 12
(Ram Test Error) |
Sterilizer does not complete cycle |
Control PC Board has a software/hardware malfunction |
Disconnect Power for approximately 10 seconds; then reconnect power and run additional cycle |
If error code persists, replace control PC Board |
Error Code 13
M9D & M11D Only
(Door switch status unchanged since last cycle) |
Sterilizer does not complete cycle |
Door switch is malfunctioning |
Perform continuity check on door switch |
Replace door switch
M9 Door Switch
M11 Door Switch |
Blown Fuses
|
Main fuse on PC Board blown |
Short in pulse solenoid |
Unplug pulse solenoid, then run M9/M11 Door Opening Test |
Replace Pulse Solenoid
M9 Pulse Solenoid
M11 Pulse Solenoid |
No Display lights
|
Unit displays temperature & pressure, but does not show LED Status Lights |
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Disconnect power for approximately 30 seconds. Then connect power and check for proper operation |
Low Water Light
(Comes on after approximately 5 minutes)
|
Water continuously fills chamber |
Water level sensor dirty or malfunctioning |
Clean water level sensor; then perform continuity check |
Replace water level sensor
M9 WATER LEVEL SENSOR ASSEMBLY
M11 WATER LEVEL SENSOR ASSEMBLY |
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Temperature Sensor malfunctioning |
Disconnect Temperature Sensor from PC Board; then check for proper operation |
Replace Temperature Probe Assembly (Temperature Sensor)
M9 Temperature Probe Assembly
M11 Temperature Probe Assembly |
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Water is not entering chamber |
Filter is dirty/clogged |
Clean filter with SpeedClean & brush or in ultrasonic cleaner |
Replace filter if necessary |
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Debris trapped in fill solenoid |
Disassemble fill solenoid & remove any debris |
Replace fill solenoid |
Low Water Light
(Comes on Immediately)
(Older style units only) |
Low water light illuminates as soon as cycle is started |
Condensor tank level sensor malfunctioning |
|
Unplug Sensor from PC Board & permanently jumper connection on PC board |
Sterilizer Has No Power
|
No response when ON/STANDBY is pushed (no lamps illuminate) |
Sterilizer is not plugged in |
Check that power cord is plugged into sterilizer and power outlet |
Plug in cord to sterilzer or outlet |
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Fuse blown on Control PC Board |
Perform continuity check on Control PC Board fuses |
Replace fuses |
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Thermostat activated |
Check for voltage at input to control PC Board from thermostat |
Wait for sterilizer to cool. Re-check voltage. If none, replace thermostat
M9 OverTemp Thermostat
M11 OverTemp Thermostat |
Fill Cycle Malfunction
|
Unit Skips Fill Cycle |
Water level sensor wet from previous cycle |
|
Allow Chamber water level sensor to air dry or remove and hand dry |
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Chamber fills very slowly |
Filter/Tubing plugged |
Remove filter and tubing and inspect |
Replace/clean filter and/or tubing |
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Chamber water level sensor malfunctioning or dirty |
Unplug sense from PC Board & jumper connection on board. Check for proper operation |
Replace/clean Chamber water sensor |
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Chamber overfills with water |
Chamber water level sensor malfunctioning or dirty |
Unplug sense from PC Board & jumper connection on board. Check for proper operation |
Replace/clean water level sensor |
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Chamber Overfills with water |
Chamber water level sensor malfunctioning or dirty |
Unplug sense from PC Board & jumper connection on board. Check for proper operation |
Replace/clean water level sensor |
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Loose, broken or dirty connection between Chamber water sensor and Control PC Board |
Perform continuity check btween connector and Chamber water sensor |
Replace/clean broken wires or connections |
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Sterilizer is not level |
Check sterilizer for level installation |
Re-install sterilizer on a level surface, adjust height of individual foot levelers, or shim up sterilizer |
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Ground screw on PC Board missing |
Check PC Board Ground Screw |
Replace ground screw |
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Temperature Sensor malfunctioning |
Unplug temperature sensor from PC Board then check for proper operation |
Replace Temperature Probe Assembly (Temperature Sensor) |
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Fill solenoid malfunctioning or stuck |
Check resistance of solenoid |
Replace/clean fill solenoid |
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Control PC Board malfunctioning |
Check all propbable causes listed above |
Replace control PC Board |
Door Does Not Open After Vent Cycle
M9/M11 Only |
Pulse solenoid energizes but door does not open |
Latch lever binding |
Operate Latch lever by hand to check for resistance |
Clean/Lubricate Latch Lever |
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Door Latch Binding |
Operate Door Latch by hand to check for resistance |
Clean/Lubricate Latch Lever |
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Tray rack not pushed all the way into chamber, causing interference with door |
Check to see if tray rack is installed properly so that it does not interfer with door |
Install tray rack properly to make sure that it does not interefere with door |
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Pressure Zero potentiometer out of calibration |
|
Adjust Pressure Zero Potentiometer |
Chamber Does Not Vent Properly
|
Door opens after a longer than normal venting period
(M9/M11)
Open The Door Lamp illuminates after longer than normal venting period -
M9D/M11D |
Drain, filter or vent tubing plugged |
Remove filter and tubing and inspect |
Clean, drain and flush tubing. Replace/Clean filter |
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Vent Solenoid malfunctioning or stuck |
Check resistance of solenoid coil |
Replace/clean vent solenoid |
Temperature Does Not Go Above 215° F (101° C)
|
Unit will not complete sterilization cycle |
Slow Pressure Leak |
Check for pressure leaks
See Panel 1 |
Replace malfunctioning component at pressure leak |
Instruments Not Drying
|
Instruments are wet after drying cycle is complete |
Door is not opening at end of vent portion of cycle |
See Problem: "Door Does Not Open After Vent Cycle" above |
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Sterilizer is not level |
Check sterilizer for level installation |
Re-install sterilizer on a level surface, adjust height of individual foot levelers, or shim up sterilizer to level |
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Filter is plugged |
Check that no water is left in Chamber after venting portion of cycle |
Replace/clean filter |
Open The Door Lamp Does Not Illuminate
(M9D/M11D Only) |
OPEN THE DOOR lamp does not illuminate at the end of sterilization cycle |
Pressure potentiometer out of adjustment |
Display PC Board check will show zero pressure setting |
Adjust pressure potentiometer |
Code "C001"
M9D/M11D Only
(Low Water Error) |
Cycle will not run |
Water level in condensing tank is too low |
Check water level in condensing tank |
Fill condensing tank with distilled water |
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Cycle will not run.
Condensing Tank is full |
Fill solenoid valve is malfunctioning or stuck |
Check resistance of fill Solenoid |
Replace Fill Solenoid |
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Water level sensor dirty or malfunctioning |
Clean water level sensor; then perform continuity check |
Replace water level sensor
M9 WATER LEVEL SENSOR ASSEMBLY
M11 WATER LEVEL SENSOR ASSEMBLY |
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Chamber Overfills with water |
Temperature sensor malfunctioning |
Disconnect temperature sensor; then check for proper operation |
Replace temperature sensor |
Code "C002"
M9D & M11D Only
(Door Ajar) |
Cycle will not run |
Door Ajar |
|
Close Door |
Code "C003"
M9D & M11D Only
Dry Cycle Error) |
Dry Cycle Did not start |
Door was not opened within 30 minutes after venting |
|
Re-run Cycle. Open Door within 30 minutes after venting |
