Furnace Control Board No Lights

One light is flickering on on and off while the other flickers on off on.

Furnace control board no lights.

Furnace control board fuse keeps blowing 1 answers hi i have a carrier furnace 48gs 036090311tp with a honeywell t8401c thermostat. I started with the. 5 10 31 15 02 54 pm seattlepioneer. You would need to confirm you have 24 volts to the board inside the furnace airhandler with a volt meter to make sure though.

I have no lights on my rheem control board. Fan only operation is running. Rule and or policy violation. I can run the fan on continuously but when i put the heat to on on the t stat the 5 amp fuse on the control board lh33wp003a in the furnace blows.

There was a surge of power that tripped out the transformer or the 24 v from the transformer and preventing the control board from bringing anything on. The sequence is like this. No light on board no power to board. Check breaker to furnace switch on side of furnace and door safety switch under the bottom door.

Repairs include new transformer and possibly. Do you have a meter. 2 reset gfi s all around the house if any. 1 shut off anything that might be connected to the same line your furnace is plugged into.

No light on the circuit board i have a goodman furnace and is not turning on when i turn on the heat on the thermostat. Now if for some reason your unit does not use a fuse often the board will be damaged due to the short. Reach out to our technicians at 760 784 9034 for assistance. Gas and oil home heating furnaces goodman furnace.

This means your furnace might have insufficient voltage or a short circuit. End result is no power is getting terminal l1 on the circuit board. Only power on the furnace.