Ice formed inside restricting the air flow but heater was still producing warm air; main power switch was shut off (circuit breaker looking switch on the front of the unit) while we began thawing the ice. 90% of the ice is gone and air is now flowing to the rooms, but now it will not heat up / produce warm air.
This happened one other time, a year or two ago, and I know it did not require major repair but I do not know (or just can't remember) what was done then to make it start producing warmth again.
Thanks, AJ
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