Can someone help me identify and cross reference part SG348, which looks like a dime size disc with 2 legs? It is likely thermistor or varistor. It was located by the bridge rectifier in control unit to the furnace blower control unit. It has manufacturer logo looking like "i" Thank you in advance.
Can't see SG348 though.
Graham
Yes, it must be it. Any sugestion on replacement? I did not want to be without heat so jumped it for now. What do you think of replacing with 1-2ohm 5W resistor instead.
I post the answer to my own question. I see some interest in this component, which is 1ohm, 20A thermistor made by RTI It can be replaced with any other 1ohm 20A to 30A PT thermistor.
I think you are correct about it being a thermister since you have replaced it with a short but it is more likely a NTC not a PTC.
Ray
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