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Hello,
We have a Whiteknight tumble dryer, model cl787, which spins the drum and blows air but the air is cold. I read the help pages here which say that not heating is the most common tumble drier fault.
I have unplugged the machine and removed the back. I have found the heater and it looks ok. I have tested the coils and both circuits read 23 ohms, so I guess the heater is ok. In case I ever need to change it in the future, how do you disconnect the heater as the wires seem to be crimped to it and I cannot see a way to disconnect it?
There appear to be two thermostats on the centre of the machine. One faces outwards into the red button and one next to it looks as though it faces inwards. I put the multimeter onto continuity and it beeps when put either side of these thermostats. Am I right to think they go open circuit when they fail? In which case, they appear to be working too!
What else should I try? Thanks in advance.
Re: whiteknight cl787 tumble dryer not heating
There is another thermostat in the front low down in the machine which is not so easy to get at. The heater wires have plugs on the ends and are unplugged in the interior of the machine if the heater ever needs to be changed.
Re: whiteknight cl787 tumble dryer not heating
Phidom wrote:There is another thermostat in the front low down in the machine which is not so easy to get at. The heater wires have plugs on the ends and are unplugged in the interior of the machine if the heater ever needs to be changed.
Thanks. The strangest thing is that the heater and two thermostats I could find all checked out ok so I put the back on, hoping that someone might post here. This morning we put some laundry in and it has heated the air. Perhaps one of the thermostats tripped yesterday and then cooled and reset? I read that some do reset and some do not. Are all the thermostats in this machine, ones that can be reset?
I did press the red button on the back yesterday but it didn’t do anything at the time. Do you have to press the button very hard? When I removed the back, it looked as though the stat would only move a couple off millimetres. Is that all? I was expecting it to pop out dramatically if tripped.
I read that if you open the door too early and the machine is hot, it can trip some stats. That did not happen yesterday. We put the load in and left it and left it and left it. When we realised the clothes had been in so long, we went to look and found that it was stone cold. No other laundry had been done that day, so it cannot be that the machine was too hot from a previous load either. What a mystery!
If I ever need to find the third thermostat in the future, what is the best way to get to it?
I bought the haynes washing machine book and it has a chapter about tumble dryers. It said that you ought to strip the machine done once every so often to remove lint which might otherwise become a fire hazard. Do the people here agree with that advice?
If so, how do I get the panel with the fan off? There is a bolt throught he middle of the fan but once I had removed the bolt, I still could not pull the fan off?
Thanks again.
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