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International Comfort Products H8DNL075F16B1 Ignition Control Board
The ignition control board is a safety device that keeps an eye on gas flow, the igniter and some more sensing equipment. It has always been a vital circuit board that, in most cases, has become a vital part of the main control board instead of having two separate boards.
Subtle hints the major ignition board needs a replacement ASAP
- Any other problem within the furnace is explored and ends up being OK
- The on-signal from the thermostat does not turn up at the control board
- Ignition sequence refuses to kick in when it receives a proper signal
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