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Table 81 — Electric Heat Service Analysis
PROBLEM CAUSE REMEDY
No Heat. Power failure. Call power company.
Fuse blown or circuit breaker tripped. Replace fuse or reset circuit breaker.
Thermostat occupancy schedule setpoint not call-
ing for Heating.
Check using ComfortLink scrolling marquee.
No 24 vac at primary contactor. Check transformer and circuit breaker.
No power (high voltage) to L2 of primary contactor. Check safety switches “one-shot” backup and auto limit.
Bad electrical elements. Power off unit and remove high voltage wires. Check resis-
tance of heater, replace if open.
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