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Mitsubishi MUZ-GE12NA Ignition Control Board
Another safety feature is the ignition control board, which has control over the gas valve, the ignition ignitor and some other sensors. It has always been a vital circuit board that is usually a vital part of the main control board instead of its own individual board.
Signs the ignition board should need replacing
- HVAC ignition cycle is unwilling to kick in even though it is supposed to
- The on-signal from the primary thermostat never moves to the main board
- Everything else in the HVAC system is inspected and seems to be OK
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