44
POSSIBLE CAUSE
Control logic
Loss of main power
Blower overload has tripped
Faulty wiring
Compessor overload has tripped
Comp. failure may have occurred if:
A) Comp. draws locked rotor amps
B) Comp. starts but does not pump
C) Motor windings have shorted
Compressor delay-timer
REMEDY
A) Adjust controller set-points.
B) On RR models with a remote
condenser installed, verify that the
RC jumper has been installed in
dehumidifier.
Check for tripped circuit breaker or
blown fuse(s)
Correct cause and reset overload
Check for loose or faulty wiring on
system and controller.
Correct cause and reset overload.
A) Replace compressor (or check
fuses on three-phase units).
B or C) Replace Compressor.
Wait 3 minutes for timer.
4.3
Evaporator Coil Ices Up
POSSIBLE CAUSE
Entering air below 70°F
Faulty or improperly set hot-gas
bypass valve
Insufficient evaporator airflow rate
Lack of refrigerant
Restrictive filter drier
Defective expansion valve
Restriction in refrigeration piping
REMEDY
Raise entering air temperature
1) Set hot-gas valve to maintain 32°F
suction.
2) Replace if defective.
3) Open hot-gas isolation valve.
1) Evaluate system airflow.
2) Check for dirty filters or restricted
ductwork.
3) Assure coils are clean.
Re-evaluate system charge.
Evaluate filter pressure drop and
replace if necessary.
Evaluate expansion valve performance
and replace if necessary.
1) Check coil for kinks in tubing.
2) Evaluate debris in distributor.
Desert Aire - LC/LV Manual
Summary of Contents for ExpertAire LC Series
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