Blows the 3 amp fuse on the control board for my goodman ac unit.
Furnace blows fuse on circuit board.
This is one of the most common reasons why the furnace fuse is blown.
If the fuse blows when you have no low voltage wires hooked to the furnace then you have an internal problem like a bad limit gas valve connection or control board.
Sometimes the blown fuse in the furnace comes from a malfunctioning transformer.
First the bad.
Check out this post.
Within a 1 5 secs after i push door switch in the 3 amp fuse blows.
Last guy replaced board already.
The good news and bad news about electric furnace troubleshooting.
I ve removed low voltage wires coming from thermostat and ac unit and i ve removed the 9 pin connector for the 24 volt circuit within the furnace.
Amperage draw anything near the fuse rating would periodically blow a fuse.
Remove the service panel on the goodman unit 5 16 screws where the power comes in.
Here are a few of the most common problems.
Make sure there is not chafed wires.
Apparently theres been somebody else here already.
Here s how to diagnose a low voltage short.
If someone is poking around your furnace and is not too careful they could more wires so that they come into contact with the furnace s wire frame causing them to short and blow the fuse on the furnace board.
This was done after i couldn t get an appointment soon enough for a.
Your furnace s control board has a separate fuse that protects it from getting too hot.
Furnace blowing cold air.
The coil in the contractor is 24v.
You need to find the root cause of the blown fuse on the furnace circuit board before you cause damage to the unit.
If the fuse keeps popping in your air conditioner you have a 24 volt short.
In this case you should call an electrician.
The contractor may be hanging up or shorting.
There could be several reasons why air conditioner keeps blowing fuse in circuit board.
After resetting the circuit breaker and replacing the fuse if the fuse keeps blowing there might be an electrical short in the electrical system that supplies the electricity to the furnace.
It isn t the hsi inducer or blower motor as these are all high voltage parts not low voltage.
Diy and save 300 500.
Is your furnace running but blowing cold air.
Or just throw parts at it.
The stat wire feeds up through the bottom access hole.
If that all check out.
Loose electrical cables there could be loose electrical cables inside the circuit box or somewhere in your ac which could be causing a short circuit.
