"Resetting the Temperature Cutoff Switch
This unit is equipped with a thermostat which controls the temperature
of the room by turning the heater on and off. The heater is protected
with a safety device to prevent overheating. Should the heater
overheat, an automatic cut out will turn the heater off and it will not
come back on without being reset. It can be reset by switching the
Main On/Off Switch to off and waiting five (5) minutes before switching
the unit back on."
http://dimplex.com/cms/publications/7208680300r03_EN.pdf
On demplexs trouble shooting guide it says it could be caused by the exterior ports being dirty or bad heating assembly,basically limit switch has failed and to replace you have to change whole assembly $$$
SOURCE: I have a Dimplex Electric
There is a safety bi-metal strip that is probably tripping out. Does it turn back on after a cooling down period ?
Testimonial: "Thanks for all the advice. It is working now and has been for the last 15 minutes. Hopefully it will work for a while."
SOURCE: motor in dimplex fire/heater not turning
Hello. It could be possible that a piece or some of the foil that gives the flame effect has fallen down on the motor, that creates the heat. This could be causing the noise. I would not think this is an electrics problem.
I would ensure the electric fire is disconnected from any power supply and either open the heater myself or get a electrical specialist to have a look. Then you will see exactly what is happening. A piece of foil may be visible which is catching the motor.
If you decide to tackle the problem yourself write down how to put the heater back together as you take each part out. These parts would be covers etc. It can easily get confusing. That is important.
SOURCE: weatherking furnace is starting and stopping
This just sounds like a couple of problems. First, your blower is designed to only turn on once the heat exchanger heats up, so the flame will be on for a minute or two before the blower starts. it sounds like your blower is cooling down the heat exchanger too fast and causing it to shut off so it can warm up again...check blower speed for heat, it should be the lowest speed (black wire). Blue=medium speed, red= high speed. second problem could be your flame sensor rod is calcified, you just need to locate this and clean it off with some fine sand paper.it is located in the flames near the burners. Also change your filters, for proper air flow through your heat exchanger.
SOURCE: Dimplex Convector Heater EPX1000 turns off by itself
I have the same problem with 3 of the 5 EPX1000s I have fitted in my flat, although mine don't even warm up. They just immediately turn themselves off. My only conclusion is that they are rubbish. Specifically, the so-called overheat protection doesn't work. Avoid.
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