Zanussi ZJD1219 board blown when not being used

[odom]

Hi,

Hope someone might be able to help with a wiring diagram for this machine PNC 914601218/01

Bit of a strange one – customer went away for a week, got back and washing machine dead and fuse tripped – but it must have happened relatively late into the seven days, as the freezer on the same circuit was still frozen.

Took out board and it’s really badly burnt at the bottom corner at the front of the machine, extending across the tracks to the top. Meggered usual suspects (heater, motor both fine), interlock locked shut. Got it open and tested contacts, all seem usual but will replace to be on the safe side.

Would just like a peek at the wiring diagram if possible – board is expensive, and don’t want to fit it and for it to go again. Board is destroyed on the corner so no chance of following tracks. Although I’m pretty certain it must be the interlock, it seems an extreme amount of damage for the door lock to do.

Thank you in advance!

[Martin]

Re: Zanussi ZJD1219 board blown when not being used

odom wrote:Took out board and it’s really badly burnt at the bottom corner at the front of the machine, extending across the tracks to the top. Meggered usual suspects (heater, motor both fine), interlock locked shut.

Classic case of customer going away without switching off the washer. Interlock starts to cook and blows the module. Your mentioned “fused tripped” but I guess you meant RCD?

Diagnosis = Interlock and Module at best, BER at worst.

[odom]

Re: Zanussi ZJD1219 board blown when not being used

Martin wrote:

odom wrote:
Took out board and it’s really badly burnt at the bottom corner at the front of the machine, extending across the tracks to the top. Meggered usual suspects (heater, motor both fine), interlock locked shut.

Classic case of customer going away without switching off the washer. Interlock starts to cook and blows the module. Your mentioned “fused tripped” but I guess you meant RCD?

Diagnosis = Interlock and Module at best, BER at worst.
Cheers Martin. Much appreciated and very interesting to know why – I naively never realised this was why it happened.

[Author]

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