Need help trouble shooting.
Carrier furnace circuit board problem.
The new circuit board icm281 is flashing red.
If at this point your carrier gas furnace isn t working the problem is most likely the thermostat furnace control board blower motor or.
A very slight surge through the power mains can eat one piece of equipment and leave the identical one beside it working fine.
If the board has obvious burn marks indicating electrical malfunction call for repairs.
The process includes replacing burner orifices installing spoiler screws installing a low gas pressure switch and making several additional adjustments.
14 y o furnace that has worked that long w o some circuit board of some type going bad is pure chance.
Do you suspect that your furnace ac control board is bad.
First make sure you have power to the board.
Check the circuit breaker for the furnace and the on off switch on the furnace.
New carrier circuit boards if this is a new design they seem to be field tested on the customer they fix what they find to fail.
In some cases this will be line voltage and in other cases the board will get its power from the control transformer.
Check for obvious loose wiring.
A circuit board in the most common system works off of input and output.
Is your air conditioner or furnace not turning on or p.
What is the answered by a verified hvac technician.
This is a job for your local professional carrier hvac expert and definitely not for the average home diyer.
Furnace or ac control board troubleshooting.
If the circuit has been tripped check the control board of the furnace before resetting the circuit.
That is true for air conditioner troubleshooting heat pump troubleshooting or gas furnace troubleshooting.
Electronics can fail relays can stick or burn out componants can get old.
If everything seems to be okay reset the circuit.