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Carrier 38TPA048 Ignition Control Board
An ignition control board controls the gas valve, the ignition sequence and a few other devices. It is an important electronic circuit board that, over the years, has merged to become a vital part of the main control board instead of having two separate boards.
Clues to watch for to know your Carrier ignition control board needs a replacement ASAP
- The on-signal from the main thermostat gets lost before it makes it to the Carrier control board
- HVAC ignition cycle is unwilling to fire up then the thermostat send a signal
- Everything else in the HVAC system is looked at and turns out to be just fine
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