Bosch varioperfect serie 4 stops cycle after 10 seconds
My Bosch varioperfect serie 4 blew the rcd while on cycle (at least I think it was that what blew it) and now although the machine will turn back on and has not since blown the electric, all it does is shoot a small amount of water into the drum and then completely refuse to do anything after that. It wont do anything until I have drained it and used the manual door open and then will only get to the same stage as before when reattempting to start the cycle. No error codes are showing.
Solution Summary
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This thread was marked as solved. Here's a summary of the problem and the fix, generated from the discussion below.
Bosch Varioperfect Serie 4 stops shortly after starting following RCD trip
- The problem
- The washing machine reportedly tripped the RCD during a cycle. After power was restored it would switch on, let in a small amount of water, then stop after about 10 seconds and do nothing further. It would only allow another attempt after the water was drained and the door was manually opened. No error codes were reported.
- Likely cause
- The accepted diagnosis was an electrical fault associated with earth leakage, most likely involving the motor. Other supported possibilities mentioned were damage to the main PCB or a chafed wire, with insulation breakdown said to be a common cause of this type of RCD trip.
- What fixed it
- No confirmed repair was documented. The accepted advice was that this fault needs specialist insulation/leakage testing to identify whether the motor, wiring or main PCB is at fault. Further diagnosis should be carried out by a suitably qualified appliance engineer.
- Checks to try
- Machine tripped the RCD during a cycle
- Machine powers back on afterwards
- A small amount of water enters the drum before the cycle stops
- Machine must be drained and manually opened before retrying
- No error codes were showing
- Parts or tools mentioned
- Specialist meter
Safety: Because the fault may involve insulation breakdown and leakage to earth, further diagnosis should be carried out by a suitably qualified appliance engineer.
1 Answer
It may have a fault on the motor. It's common for some faults to trip the RCD and then when reset the washing machine has a fault but no longer trips the RCD. Unfortunately you need a specialist meter to troubleshoot this kind of fault because it's often caused by an insulation breakdown and electricity leaking to earth (Tripping or Fusing Electrics or RCD).
The fault could be on the motor, but it could be in the main PCB or even something in the PCB has been damaged by the motor although the RCD should have tripped fast enough to hopefully prevent that. However, even a chaffed wire could account for this fault.
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