W&H MN-111, Руководство по устранению неисправностей

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Errors
MN-111 | Service book | Errors and Troubleshooting MN-111 ENG Rev08 | 2019/06/21 | © 2019 W&H Sterilization Srl 15
Code Description Possible causes Checks and actions
340 During HEA2 phase
Pchamber<Penviroment-0.10 bar.
EV1 Solenoid valve failure. Replace component if needed and/or fix the problem.
Main board failure. See Test instructions service book, chapter SPECIFIC TESTS FOR INDIVIDUAL
COMPONENTS, Heating element of the steam generator and safety thermostat (TABLE
POINT 2).
If it is necessary, replace the main board.
Water pump failure See Test instructions service book, chapter SPECIFIC TESTS FOR INDIVIDUAL
COMPONENTS, Water pump.
Replace the water pump if needed.
Check/priming ULKA valve failure See Test instructions service book, chapter SPECIFIC TESTS FOR INDIVIDUAL
COMPONENTS, Water pump. Replace the ULKA valve if needed.
S.G. temperature sensor failure See Test instructions service book, chapter SPECIFIC TESTS FOR INDIVIDUAL
COMPONENTS, Steam generator temperature sensor.
Replace the sensor if needed.
Failure in the S.G. heating element See Test instructions service book, chapter SPECIFIC TESTS FOR INDIVIDUAL
COMPONENTS, Heating element of the steam generator and safety thermostat (TABLE
POINT 3, if problem persists, see TABLE POINT 4).
If it is necessary, replace the steam generator.
EV5 solenoid valve failure Run the diagnostic cycle EVX test.
If one valve is detected as faulty, replace it.
Pressure transducer failure. See Test instructions service book, chapter SPECIFIC TESTS FOR INDIVIDUAL
COMPONENTS.
Replace the sensor if needed.
422 H
2
0 overconsumption during
HEA3 phase (starting from the
beginning of the cycle
H20>1200cc).
Door gasket failure. Check and replace the door gasket if needed.
water pump failure. See Test instructions service book, chapter SPECIFIC TESTS FOR INDIVIDUAL
COMPONENTS, Water pump.
Replace the water pump if needed.
Check/priming ULKA valve failure. See Test instructions service book, chapter SPECIFIC TESTS FOR INDIVIDUAL
COMPONENTS, Water pump. Replace the ULKA valve if needed.
Failure of the clean water MIN
level sensor. See Test instructions service book, chapter SPECIFIC TESTS FOR INDIVIDUAL
COMPONENTS, Water level sensors. Replace the sensor if needed.
S.G. tempearture sensor failure See Test instructions service book, chapter SPECIFIC TESTS FOR INDIVIDUAL
COMPONENTS, Steam generator temperature sensor.
Replace the sensor if needed.
Steam generator failure. Run the diagnostic cycle S. G. Perform. Test.
If necessary, replace the steam generator.
Solenoid valve EV5 failure. Check the components conditions.
Replace the components if necessary.
Solenoid valve EV1 failure. Check the components conditions.
Replace the components if necessary.
EV5/EV1 tube line clogged/dirty Check the tube line conditions.
Replace the components if necessary.
Pressure transducer failure. See Test instructions service book, chapter SPECIFIC TESTS FOR INDIVIDUAL
COMPONENTS.
Replace the sensor if needed.
Multiple failure: solenoid valve
EV3 and check valve V1. Check the components conditions.
Replace the components if necessary.
Leakage (e.g. chamber) Run a 270°F sterilization cycle with maximum load and check for leaks during the
pressure and process phases. The check should be done visually (water drops, steam
sprays). Fix any detected leak.
423 H20 overconsumption during
HEA1 phase (starting from the
beginning of the cycle
H20>300cc). See error "422" above, all causes.