The client’s ceiling heater did not start, which was a heat pump. The issue turned out to be in the wall thermostat – closing the jumpers Y and R started the unit instantly. Thermostat had to be replaced.
The client’s ceiling heater did not start, which was a heat pump. The issue turned out to be in the wall thermostat – closing the jumpers Y and R started the unit instantly. Thermostat had to be replaced.
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