Tip & How-To about Heating & Cooling
Use a multimeter set to Ohms, then check for continuity from the Phase to the switch, then to the Thermal fuse, < thats a good candidate for replacement, it should read a "Short" across it, OPEN circuit means it has failed. then from Thermal fuse, if OK, to the Element(s), these should have resistance of about 11 - 14 Ohms...from one side to the neutral. When ON, there should be a Resistance reading on the Meter, of up to 14 Ohms measured across the 3 pin plug, Phase to Neutral. would be OK, for a 1000Watt 1KW appliance, it scales up & down.
Essentially with Neutral, as common, the Phase comes in to one side of a Switch, the "Other" side of the switch goes to the Thermal Fuse, the "Other" side of that Fuse, goes to the "Hot" side of the Element. and the "Other" "Cold" side goes to Neutral, common. So essentially with the switch in the ON position, we should get a resistance reading on our meter, measuring from Phase to Neutral. The reading is in accordance with Ohms law. IE: To get the resistance of an appliance, we take the Wattage, & divide it by the Voltage, Taking the answer from that, Amps, we then, divide the Voltage by that result, and we have our Resistance.EG: 1000 Watts, divided by 112Volts = 8.9Amps. Therefore 112Volts divided by 8.9Amps = 12.4 Ohms. That is your resistance or Load, or Element.
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