Troubleshooting

Problem: Unit is not operating

Possible cause

Possible Cause: No power to the unit

Remedy: Check the power from the power supply panel

Possible Cause: The overload tripped

Remedy: Reset the two overloads

Problem: Little or no airflow

Possible cause

Possible Cause: Fan motor is burnt

Remedy: Replace the fan

Possible Cause: Refrigeration coils are dirty

Remedy: See section ‎7—Maintaining the unit

Possible Cause: Loose electrical wiring connections

Remedy: Check the wiring diagram to find the fault and repair

Possible Cause: Circuit breaker tripped

Remedy: Rest the circuit breaker

Possible Cause: Fuse is blown

Remedy: Replace the fuse

Problem: Little or no water extraction

Possible cause

Possible Cause: Insufficient air flow

Remedy: Check and perform the suggestions for the above “Little or no airflow” symptom

Possible Cause: Compressor fault

Remedy: Contact the factory service center

Possible Cause: Loss of refrigerant

Remedy: Contact the factory service center

Problem: Unit vibrates excessively

Possible cause

Possible Cause: Loose compressor

Remedy: Tighten the nuts of the compressor mounts

Possible Cause: Damaged fan

Remedy: Replace the fan

Problem: Water flooding inside the machine

Possible cause

Possible Cause: Drain pipe is blocked/frozen

Remedy: Clear the obstruction

Possible Cause: Drain pipe is too high

Remedy: Ensure that no section of the drain hose is above the level of the water outlet

Possible Cause: Crimped or blocked tubing

Remedy: Straighten, clear, or replace the tubing

Problem: Compressor is not working while the fans are working

Possible cause

Possible Cause: High pressure switch fault

Remedy: Press the HP switch button

Possible Cause: Oil pressure switch fault

Remedy: Press the oil pressure switch button

Possible Cause: Circuit breaker tripped stage 1

Remedy: Press circuit breaker stage 1

Possible Cause: Circuit breaker tripped stage 2

Remedy: Press circuit breaker stage 2

Possible Cause: Main compressor protection fault

Remedy: Press compressor protection fault

Problem: The fans are not rotating

Possible cause

Possible Cause: Possible failure of the no volt relay component

Remedy: Check there is no failure of the no‑volt relay component

Problem: The two fans are rotating counterclockwise (blowing air into the unit)

Possible cause

Possible Cause: The power supply cable is not connected correctly

Remedy: Go to the main power supply connections and reverse two of the cables (from R S T to R T S)

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