Roel for Model Number ME21H706MQG Microwave runs but not heat. I check the magnetron is good, the thermal switch on top of magnetron is good, Capacitor is new along with the diode which I thought were the culprit. So I proceeded with testing the Thermostat I see that this microwave has 3 thermal switches. The two behind the control panel, the one on the left-hand side 1509 KSD-140LC 70 has an open circuit, the one on the right hand 1509 KSD-140LC 0 is a closed circuit. I also have one on the top 1509 KSD-120LC 0 has an intermittent open-close circuit when I wiggle the prong while testing. Should all of them suppose to have a closed circuit? Can you please tell me which one to order. thank you.
Answer Roel, The thermostats you are testing would be fine except for the one with the intermittent open/closed. The thermostat should remain closed except for in the event that it gets too hot. Also, check the door switches as this could cause the issue. Read More... Answered by AppliancePartsPros.com | Thursday, April 30, 2020