Is your air conditioner or furnace not turning on or p.
Carrier furnace circuit board problem.
Check for obvious loose wiring.
This is a job for your local professional carrier hvac expert and definitely not for the average home diyer.
If everything seems to be okay reset the circuit.
If at this point your carrier gas furnace isn t working the problem is most likely the thermostat furnace control board blower motor or.
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.
After a year or so the problems usually go away.
If the board has obvious burn marks indicating electrical malfunction call for repairs.
A very slight surge through the power mains can eat one piece of equipment and leave the identical one beside it working fine.
14 y o furnace that has worked that long w o some circuit board of some type going bad is pure chance.
The jumpering bothers me all motors back feed voltage off the unused motor windings sometimes alot more than 120volts.
Furnace or ac control board troubleshooting.
Carrier heater not turning on.
The process includes replacing burner orifices installing spoiler screws installing a low gas pressure switch and making several additional adjustments.
If the circuit has been tripped check the control board of the furnace before resetting the circuit.
The new circuit board icm281 is flashing red.
First make sure you have power to the board.
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.
What is the answered by a verified hvac technician.
Need help trouble shooting.
Do you suspect that your furnace ac control board is bad.