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I have a Intertherm Model mgha-056abfc-02. I am having trouble with the fan switches. I tried to replace with an aftermarket, but it did not work.

I have found one at one of your distributors but it does not match the part number 626337 on the outside exactly (Mine has a "B" on the end) is that OK? also I was going to replace the switch next to it while I was at it. part # 6263360 but I haven't been able to find this one. can you help me with this as well?

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

carldc3
  • 82 Answers

SOURCE: INSTRUCTION MANUAL /INTERTHERM FURNUES

usually a power surge will fry the transformer unless sometimes if your lucky the manuf. installed a fuse either in line or on the circuit board. 5 amp or 3 amp....any thing bigger wont protect your equipment.

Posted on Jan 10, 2009

  • 659 Answers

SOURCE: heat does not work when thermostat calls for heat...

This is a safty limit switch. Find two wires that are going to the inducer or combustion blower that terminates to a small disk about the size of a penny. In the middle of those two wires should be a small button. Push firmly down thus reseting the switch. This should do it. It could also be the pressure switch but I have never heard it called that before. If the first doesn't fix the issue. Remove the small tube that runs from the inducer to a black or silver disk, blow out and draw in air until you hear clicking noises. Sometimes they can become stuck. If that doesn't work, remove the other end of the tube from the pressure switch and blow through it. Sometimes debris can clog the entrance to the pressure switch as well. Hopefully this will solve your problem. You can have a bad limit or a bad pressure switch. In this case you will probably have to call someone out.

Posted on Apr 08, 2009

bobicehouse
  • 1524 Answers

SOURCE: Intertherm model MGHA-090-AAPQ -- combustion air keeps running

Sounds like a problem with the circuit board.

Posted on Apr 23, 2009

  • 89 Answers

SOURCE: Intertherm MGH-056ABFC-91 won't kick on. Just

There is probably more than one limit switch. I'll have to get a wiring diagram of this unit. See if you can follow the wires from the wires from the limit switch and see if they go to another limit switch. Also you can put a jumper wire on the red wire and white wire on the unit outside and see if ti comes on.

Posted on Nov 03, 2009

mpcheeseman1
  • 1400 Answers

SOURCE: pilot light won't stay lit

possible bad thermocouple.

Posted on Jan 14, 2010

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1 Answer

Intertherm MGHA-070ABFC-05 will not run/cool


Multiple problems. Eliminate thermostat first. Remove face from wall and turn on breaker. If fan still runs you have a bad board or bad relay. If fan outside is running compressor should be too. These operate on same contactor. Verify you are getting 24 volts to coil side of contactor. If odf stops working and contactor remains pulled in you have a bad motor. If odf motor stops working the compressor will shut off due to overheating.

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Instalition of intertherm model#MGHA-077ABFC-02


Here you go, get back with me if you need anything.


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1 Answer

My intertherm mgha is having pilot issues. The


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