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I have a heat/AC furnace in my mobile home. The heat was not working so the service man changed the relay switch and the thermostat. It worked for a few hours and hasn't since. My air was working before he changed the thermostat. My question is does this sound like a blower motor problem? Any input would be appreciated. Thanks

No heat at all ? Lower heat temp than normal ? No blower motor ?

One of these or all ?


Sequencer controls elements and blower motor.


Thanks,
Robert

Before the service guy changed the thermostat, the heat would work for a few hours, then kicked off and wouldn't come back on. The air worked great. Now neither one will work. The thermostat clicks like it is going to but nothing at all.

The sequencer and relay are not the same?

Thanks!

Sequencer controls elements and blower motor for heating.

Fan relay controls blower motor for cooling.


So now, nothing works ? No elements, no a/c and no blower for either ?


Thanks,
Robert

Hi.

Thats correct Robert..........no nothing works. No elements, no ac, no heat, nor the blower.

Thanks!

Check transformer first for 240vac on primary-line side and 24vac on the secondary-load side.



Thanks,
Robert

Hi Robert:

I just wanted to thank you for all your help. I called a service guy today who came and changed all four fuses. It fixed my problem!

Now I have both heat and air again.

Thank you again for all your help.

Cindy

Hi Cindy,

That's great, you're very welcome, happy to help.



Take care and best wishes,
Robert