01201138 | 0108 | 1 | 13 | 13. Maintenance | INSTRUCTION | |
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Operating incidents
In order to limit the risk of failure in the electronic controls of the programming unit of the machine, the machine should be earthed. Should interferences happen, the fi rst thing to be checked is the earthing of the machine.
The programming unit permanently checks the machine, regarding both safety and working aspects. To make the fault fi nding easier, the display window indicates in clear text the origin of the failure, or the reason why the particular function cannot be used. The table below gives for each problem detected the message of the machine and the solutions to be brought.
Error/Function | Cause | Action | ||
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| - Electrovalve's fi lters are blocked. | - Clean electrovalve's fi lters. | |
NO WATER | Error 1 | |||
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| - No water in main supply. | - Check water in main supply. | |
Water level has not reacher set | ||||
level within set time. | - Manual water valves (taps) are close. | - Open taps. | ||
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| - Electrovalves are faulty. | - Check function of electrovalves. | |
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| - Drain valve is open. | - Check function of drain valve. | |
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| - Check that level tube is sound | ||
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| - Level tube is faulty or not come loose from mother | ||
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| board. | and his raccordement. | |
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| - Level detection function on CPU PCB faulty. | - Replace PCB. | |
DOOR OPEN | Error 2 |
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| Error 3 |
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DOOR UNLOCKED |
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Signal from microswitch which | - Door not locked. | - Test whether door really locked. | ||
detects when the door is locked |
| - Open the door and switch off | ||
absent at program start. | - Fault in door lock switch or in wiring faulty. | power to machine. Wait a minute | ||
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| or so, switch on power supply |
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| ,close door again and try restart- |
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| ing. |
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| - Check wiring or replace door |
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| lock as appropriate. |
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| - The PCB is faulty. | - Replace PCB. |
NTC LOW TEMP. Error 4
Temperature sensor indicating a temperature below lowest allow- able value.
- This suggests open circuit (continuity fault) in sen- sor or wiring.
-Check the wiring temperature sensor and replace as appropri- ate.
- Temperature sensor faulty. | - Replace temperature sensor. |
- Fault in temperature sensing device on CPU PCB. - Replace PCB.
