Having problems with your Air Conditioners ?

Rudd Furnace under-achiever 90 no lights nothing power going to unit and 3 amp fuse check out OK! I had the board, and blower replaced today ran for about two hours and now nothing again!Same problem! Help.


Answers :

You say you have power but what is the voltage? You said that that you are using a 3 amp fuse so you are referring to a gas unit. Ok, have you checked the safty switch that is located on the blower cabinet, the one that the door sits against to make sure that you have power leaving the switch? Also, on some units, there is a limit switch that come directly off of the above mentioned blower cut off switch that when tripped, will cut main power to the board. Its located on the inducer or on the flu pipe, but mostly on the inducer houseing. Make sure that all your manual reset limits are reset. But check the switch first and then work your way to the limits. This is the only thing left and was probably the probablem before you replaced the board. If you have any more questions, please respond to the thread.

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