Ultra-Aire 98H Installation & Operation Instructions page 18

Troubleshooting (Continued)
CAUTION! CAUTION!
TROUBLESHOOTING SHOULD BE PERFORMED BY A QUALIFIED HVAC TECHNICIAN.
Symptom
Control not
powering
dehumidifier.
Refrigerant Charging
WARNING! WARNING!
SERVICING THE ULTRA AIRE DEHUMIDIFIER WITH ITS HIGH PRESSURE REFRIGERANT
SYSTEM AND HIGH VOLTAGE CIRCUITRY PRESENTS A HEALTH HAZARD WHICH COULD
RESULT IN DEATH, SERIOUS BODILY INJURY, AND/OR PROPERTY DAMAGE. SERVICE MUST
BE PERFORMED BY A QUALIFIED SERVICE TECHNICIAN.
If the refrigerant charge is lost due to service or a leak, the leak should be repaired and a new charge must
be accurately weighed in. If any of the old charge is left in the system, it must be recovered before weighing
in the new charge. Refer to the unit nameplate for the correct charge weight and refrigerant type.
18
Ultra Aire 98H / 120H Installation Instructions
SERVICE
Possible Reason
1. No power to
dehumidifier.
2. 24 volt circuit breaker
tripped or faulty
transformer.
3. Loose or missed wired
control wires at
humidity control.
4. Loose or missed wired
control wires at unit.
5. Humidity control
defective.
Troubleshooting Procedure
WARNING! WARNING!
ELECTRICAL SHOCK HAZARD:
ELECTRICAL POWER MUST BE PRESENT
TO PERFORM SOME TESTS. THESE TESTS
SHOULD BE PERFORMED BY A QUALIFIED
SERVICE PERSON.
1. Verify power to the unit at power outlet.
2. Look for short in control wiring.
3. Check wire connections at control and unit.
4. Reset circuit breaker button on dehumidifier.
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