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Mitsubishi MS-A09WA-1 Flame Sensor
The flame sensor is a safety feature that will reliable sense the exact flame during the initial ignition of the furnace. For obvious reasons, when the flame sensor is activated the whole system stops until the problem is remedied and the system is reset.
Simple warnings that your safety flame sensor is almost dead?
- The type of gas you use cannot begin an ignition sequence and closes down
- The heating system is unwilling to ramp up when you want it to
- System kicks in rarely when it thinks it should
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