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HVAC Repair Forum from NorthAmericaHVAC.com • View topic - Goodman Janitrol Control Board
Board index HVAC Parts & Repair Help Troubleshooting (1) Goodman Janitrol Control Board

Goodman Janitrol Control Board

Post Wed Jul 11, 2012 2:07 am
weezer

I accidently replaced the fuse on this board with a 15 amp fuse in lieu of the 3 amp fuse on the board. The air handler did not work very long after this obviously. Do you think the board would be the only thing i need to replace or could i have damaged other items in the air handler.....thanks in advance for any help.

Post Thu Jul 12, 2012 5:59 pm
joe User avatar

Posts: 33
Ouch- yes, the 15 amp fuse is a bit high for the board. The fuse protects the entire low voltage system, which runs from the transformer in the furnace, to the indoor board, to the outdoor unit, to the thermostat, ect. The low voltage system controls the entire heating and cooling system. As to which components in your system are bad, it just depends on where the short is (as this is determins the channel that the excess amperage flows through)

The board itself may or may not be bad. The main transformer in the furnace, which converts the high voltage into low (24) volts may have blown. It may be a variety of other items also.

I'd start by seeing if you transformer is still producing 24 volts on the secondary side. If not- its bad. If so, the hunt continues. Hope this information helps you get started!

NorthAmericaHVAC.com
Joe

P.S.
We have a large variety of OEM and universal transformer and control boards in our store if you end up needing these or other repair parts


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