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spivco
spivco, HVAC Technician
Category: HVAC
Satisfied Customers: 236
Experience:  18 years experience. Hvac and electrical licenses.
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I cut the thermostat wire to my furnace. Weathermaker 9300

This answer was rated:

I cut the thermostat wire to my furnace. Weathermaker 9300 TS When I spliced the wire back together the thermostat did not come on. Could the furnace have gone to lock out? Would that cause the thermostat to have no power?

spivco :

Hi. I'm Joe and I will be glad to help you out.

spivco :

You probably blew a fuse. If you open the furnace, then remove the blower service panel, you will see a circuit board mounted on the blower housing.

spivco :

The fuse will be plugged into this board.

spivco :

It will be a blade type fuse, probably a 5 amp

Customer:

Ok give me some time to take the blower panel off and look for a fuse.

spivco :

No problem

Customer:

Purple fuse with an E on it is open, (Infinite resistance when set to ohms)

spivco :

ok. That's a 3 amp fuse. Do you have another to replace it?

Customer:

I should have one in the car.

spivco :

ok. Try that and see if that takes care of it

Customer:

Found a 5 and a 2 so I went with the 5 amp. Furnace is working.

spivco :

Great

Customer:

I will buy a 3 tomorrow.

spivco :

5 Should be fine, but if the 3 was a factory install, better stick with that

Customer:

Thanks!

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