Carrier Furnace Circuit Board Problem

Is your air conditioner or furnace not turning on or p.

Carrier furnace circuit board problem.

The new circuit board icm281 is flashing red. Furnace or ac control board troubleshooting. A very slight surge through the power mains can eat one piece of equipment and leave the identical one beside it working fine. In some cases this will be line voltage and in other cases the board will get its power from the control transformer.

Check the circuit breaker for the furnace and the on off switch on the furnace. If the circuit has been tripped check the control board of the furnace before resetting the circuit. The jumpering bothers me all motors back feed voltage off the unused motor windings sometimes alot more than 120volts. If everything seems to be okay reset the circuit.

14 y o furnace that has worked that long w o some circuit board of some type going bad is pure chance. A circuit board in the most common system works off of input and output. This is a job for your local professional carrier hvac expert and definitely not for the average home diyer. What is the answered by a verified hvac technician.

Need help trouble shooting. Carrier heater not turning on. If at this point your carrier gas furnace isn t working the problem is most likely the thermostat furnace control board blower motor or. Check for obvious loose wiring.

First make sure you have power to the board. If the board has obvious burn marks indicating electrical malfunction call for repairs. After a year or so the problems usually go away. 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.

That is true for air conditioner troubleshooting heat pump troubleshooting or gas furnace troubleshooting.