wm62 not heating

[scottjoseph72]

Hi I have a Hotpoint aquarius wm62 not heating.
The element reading about 18 ohms and the thermistor around 22k.
Can anyone suggest anything else?

[iadom]

Re: wm62 not heating

That heater resistance is on the low side, should be at least 23 ohms. The thermistor will not stop it from heating, the thermal cut outs are internal on the heater but do not reset once failed.

If all wiring from heater to control is intact then it suggests a control unit failure.

[scottjoseph72]

Re: wm62 not heating

Ok thanks – Is the element fed directly from PCB ( ie faulty relay ).
I can hear pressure switch clicking so dont think thats related and machine cycles normally otherwise – runs through full program.
I shall trace wiring back in morning

[iadom]

Re: wm62 not heating

This machine has a ‘hybrid’ control unit, the pcb is mainly involved in motor and temperature control. Most of the components including the heater are controlled by the switch cams within the timer unit, no heater relay involved, far more reliable but not as easy to fix on the very rare occasions that the timers fail.

[Martin114]

Re: wm62 not heating

Has this model got an economy button?

[iadom]

Re: wm62 not heating

It does have an economy button, selecting that skips the heat phases. In theory a faulty economy switch could cause this fault. If that is the case it would be the first time I have ever heard of that fault, .

[Author]

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