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Symptoms: goes through a cold wash to end, no problem. Goes through a 90 wash to end, no problem. All other heat programmes it sticks on the wash part of the cycle, does not get hot, and eventually the display jumps to 1 min. The customer then has to cancel the programme, select rinse and spin and it completes ok. Following other threads I have cleaned the end frame and brush gear on the motor, the insulation was 6 Meg, then after cleaning, no reading. Fault still there. I have renewed the NTC part No 170961, and am waiting to hear from the customer if it has made a difference, though the resitance of the old one is similar to the new one at room temp. I have also had the contol board out looking for dry joints, but none found. Apparently 2 cold washes and 3 90 washes have gone through ok, 4 normal washes have not, in the past week. Any ideas, please?
Re: Bosch WAE24464GB/03 heating problem
mvitorio wrote:the insulation was 6 Meg, then after cleaning, no reading.
Do yourself a favour, change the heater!!(265961 or Qualtex HTR72 etc).:wink:
Re: Bosch WAE24464GB/03 heating problem
Fitted new heater, and left customer to report back after use. It failed, as before, on first wash. I have asked her to do a 90 wash to see if that will go through, as it did previously. I am fearing it will be the programmer, either power module or operating module. Any suggestions in isolating cause of problem gratefully received. Many thanks in advance (‘:?’)
Re: Bosch WAE24464GB/03 heating problem
Well there’s little options left TBH. Except just to confirm that the NTC lead, at the module end, gives an exceptable resistance reading at ambient of approx. 5.5 – 6.5 kOhms.
The heater is new, so is the NTC, therefore unless the connections back to the module are duff, then there’s little against suspecting the module being the culprit. 🙁
You just need to check and double-check those connections first…OK?
Re: Bosch WAE24464GB/03 heating problem
Many thanks again, Martin. Will double check the connections again, but I am swayed to your view, just wanted to make sure I haven’t overlooked the obvious. Customer has just rung to say 90 wash has not gone through, so it looks like the inevitable.
Regards
RichardRe: Bosch WAE24464GB/03 heating problem
Managed to get this machine to the workshop, and found that the heater control relay on the power module, tyco T7S VSE6-09-WG was intermittent. Renewed it and machine back to normal.
Relay is indicated with arrow.
Inspecting the old relay and dismantling, the relay contacts were badly burnt, looks like a weak spot.
Hope my experience with this machine will help.Re: Bosch WAE24464GB/03 heating problem
mvitorio where did you get your rel;ay from ?>
am wondering if its worth soldering a new relay into a bosch dw board thats faffing aboutRe: Bosch WAE24464GB/03 heating problem
I have never had to replace the dishwasher one, so check specification
Re: Bosch WAE24464GB/03 heating problem
cheers for that, turns out i dont need one afterall (hopefully), but your post made me think again about the dw i was going to condemn today. i forgot that the relays feed each other, so you reminded me to check the full circuit on the pcb and i found that it was good up until the relay dry joint, but after that it wasnt, as it had been sent off to be fixed, i just assumed it had done more serious damage. anyways a bit of resoldering onto the other side of the track and presto working dw, much kudos signor
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