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Intertherm MGHA-090
Posted: Fri Oct 22, 2010 6:33 pm
by mwpederson
I have a problem with the blower motor coming on and running for 5-10 second then go off and come back on. This is when use the furnace for heating. When you switch the t stat from auto to on it works fine. what is the problem.
Re: Intertherm MGHA-090
Posted: Sat Oct 23, 2010 1:05 pm
by furnaceman
the most likely cause based on your description is a faulty fan switch
the can be ordered from this site at a reasonably cost.
remember to turn power to the unit off, before disconnecting/reconnecting the fan switch.
go to the parts section of this site
Re: Intertherm MGHA-090
Posted: Sat Oct 23, 2010 4:01 pm
by mwpederson
i don't think it the switch because the a/c works fine
Re: Intertherm MGHA-090
Posted: Sun Oct 24, 2010 7:19 pm
by Robert
The fan switch is used in heat mode only. Has nothing to do with cooling mode.
Thanks,
Robert