Staff Answer
Sep 28, 2026 - 07:36 AM
Here's how to tell. If the board is working, you'll feel the AC heater get warm on AC, and the flame will stay lit on LP. If there's heat and the fins still won't get cold after 24 hours level, the cooling unit is failing. Losing cooling when it gets colder outside and recovering after a rest is also a common sign of a weak cooling unit. The Nordic 6610 cooling unit fits the 1200 if that's the case.
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