Islandaire EZ Series 25, Operating & Maintenance Manual

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TROUBLESHOOTING GUIDE
( CONTINUED)
SYMPTOM CAUSE CHECK/CORRECTION
Evaporator coil frosts
(continued).
Faulty thermostat. Test and replace if necessary.
Unit rattles or is noisy.
Defective compressor. Check and replace if necessary.
Refrigerant line hitting. Bend tube slightly to obtain clearance.
Loose fan, blower, or motor mounts. Check and tighten if necessary.
Rubbing of fan or blower on housing. Ascertain cause and correct. Check during operation.
No heating.
Indoor room temperature above thermo-
stat set point. Raise thermostat setting if comfort not yet achieved.
Faulty thermostat. Test and replace if necessary.
Faulty fuse or circuit breaker. Replace as necessary.
Defective switch. Test and replace if necessary.
Defective heater. Inspect and replace if necessary.
Automatic limit reset control will not
reset. Check high limit for open circuit and replace if necessary.
Broken, shorted, loose, or miswired wir-
ing.
Inspect and correct.
If fuse or circuit breaker is tripped. Reset breaker and inspect unit to find cause of trip.