Hotpoint tcfs83bgk(uk) not heating

[electrofix]

have you actually looked at the pcb for any damage ?

Dave

[Pilch2k]

Hi Dave,

Nothing looks overtly damaged. The dial for programme selector has two wires, one goes to front thermister and the other to the heater. I got a good shock off the front thermister so that’s definitely getting power 🙂 the heater has continuity across the fuse and non contact pen lights up when machine is running too.

Not sure what else to do.

Thanks.

[electrofix]

where is the main pcb. I have got it on front right at bottom.?

Dave

[Pilch2k]

I assumed it was on the front where all the dials are? Struggling to get the front fascia off at the moment.

[electrofix]

some of the later machine have one panel but all others have 2

which ever one it is you need to find where the element leads connect that all 3 of them plus stats then take the board out and look fo damage

after all you said there was a burning smell and we need to see if its damaged the board

Dave

[Pilch2k]

I’ll try and get access, the fact that I have power going to the thermister and heater must mean it’s OK? Are there any other things that could stop the heater. Does the capacitor do anything related to that?

[electrofix]

all you have proved is there is mains voltage on the thermistor. since the thermistor is a low voltage device it means nothing as the voltage across it are what is important. Thermisters are part of electronics often working on 5v or so. if it had 240 across it there would be a bang. If its a thermostat then thats different.
heaters need a live and a neutral to work and the board may switch either one. so if neutral was switched then the heater would be live but until the neutral arrives it wont work

Dave

[Pilch2k]

Hi Dave,

Sorry, you must be banging your head against the wall! I’ll check back on once I get access.

Thanks.

[Pilch2k]

Got the board off, nothing is jumping out as being damaged.

[electrofix]

oh was worth a look

out of simple ideas now

Dave

[Pilch2k]

Where the wires from thermostat and heater plug into pcb there is continuity. How do I test that the heater is getting everything it needs?

[electrofix]

well all we know now is the relays are not closing to energise the heater

we dont know if is a faulty relay, thermister or a board fault

Dave

[Pilch2k]

Not sure if this is correct, but my heater (original) has only one connection going into it, does it look right?

https://ibb.co/ZgXJhDL

[Pilch2k]

I’ve tried 3 heater units as complete kits with fuses/thermisters without heating working.

Regarding the picture – I don’t recall that other plug being in, seems weird to be loose.

[electrofix]

no it wont work like that
plug that in is the thermistor. you should het a reading on a meter in the K ohm

the other 3 are the heater elements and you should get low ohms readings across any one of the 3

Dave

[Author]

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