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