Bosch W/m Erratic Heating On Different Wash Programmes
I own a Bosch washing machine WAA28160GB/04 and for a while the washer has been either heating the water to boiling point or not warm enough for the wash or just cold. The 40C wash would boil and the 30c wash would be nearly cold. The heating of the water would be erratic depending on the program. I naturally thought the fault was with the thermostat of which I have recently replaced. The water heating is not as erratic as before but the washes are still too hot or too cold for the program.
Could this be a fault with the PCB or some other component?
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Bosch WAA28160GB/04 erratic wash temperatures on different programmes
- The problem
- Bosch washing machine WAA28160GB/04 was heating inconsistently depending on programme: some washes overheated to near boiling, while 30C and 40C programmes could run too cold or too hot. The temperature control fault had been present for some time.
- Likely cause
- Temperature regulation fault not resolved by replacing the thermostat. A PCB fault was suggested as a possibility, but no diagnosis was confirmed.
- What fixed it
- The accepted advice was not to buy a replacement PCB speculatively because it is expensive and may not cure the fault. Further diagnosis should be carried out by a suitably qualified appliance engineer.
- Checks to try
- Thermostat had recently been replaced
- Observed overheating on some programmes and insufficient heating on others
- Parts or tools mentioned
- Thermostat
- PCB
1 Answer
I would get an engineer out for this one. It could be a pcb issue or maybe something else. I definitely wouldn't buy a pcb, they are expensive and you can't send them back if it doesn't cure the fault.
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