Rajnikant i have samsung me18h704sfs microwave.it turn on but didnt heat up. i did check continuity on thermo state behind panel. looks to me left thermo state is not working. it says 1505 KSD-40LC 70 on thermo state. can you please tell me which one should i order?
Answer Hello Rajnikant, that thermostat is a normally open type, it senses the temperature rise on the underside of the microwave if the vent is not turned on and the cooktop is being used , it will cause the vent motor to automatically start and stops the vent motor once the temperature drops. It does not affect microwave operation. For a no heat condition where the microwave seems to run and count down correctly,start by testing the door interlock switches and if they test ok then check for 120v to the primary side of the high voltage transformer ( black - black /white wires) for 120v in operation using a multimeter. If there is no 120v then replace the control board, if there is 120v then there is a problem with the high voltage section components. Read More... Answered by AppliancePartsPros.com | Wednesday, August 7, 2019