Table of Contents
Advertisement
The following procedures are recommended when correcting the indicated problems. Routine clean-
ing and maintenance can be performed by anyone. Service and repair should be performed only by
a qualified refrigeration service person.
PROBLEM:
THE ENTIRE UNIT DOES NOT RUN. Green light not lit.
1.
CAUSE:
POWER INTERRUPTION
REMEDY:
Check external power supply. Look for blown fuse or open circuit breaker. Replace fuse/reset
breaker. Check to make sure no other power consuming equipment is on the same circuit as the unit.
PROBLEM:
THE ENTIRE UNIT DOES NOT RUN. Green light lit.
1.
CAUSE:
THERMOSTAT INOPERABLE
REMEDY:
Setting may be too high to call for cooling. Lower set point by turning temperature dial clockwise.
Tighten or replace any loose or broken wire on thermostat. Replace thermostat if defective.
2.
CAUSE:
ELECTRICAL PANEL: a) contactor coil defective, contacts stuck open, burned or dirty.
REMEDY:
Correct as follows: (a) Tighten /replace loose wire terminals. (b) Replace contactor
PROBLEM:
EVAPORATOR FAN RUNS BUT COMPRESSOR AND CONDENSER FAN DO NOT
START.
1. CAUSE:
Low Voltage
REMEDY:
Check power supply for voltage outside the range of 106-126 on 115 volt models and 187-253 volts
on the 208/230 volt units.
2. CAUSE:
Thermostat
REMEDY:
Check for loose wires on the thermostat. Tighten wires, wait for time delay (3-5 minutes), then
restart unit.
3. CAUSE:
High Pressure Switch opened circuit.
REMEDY:
Push high pressure switch button (located in cord storage compartment) to reset switch. Make sure
condenser coil is not obstructed; there should be 8 inches of clearance from condenser inlet air
opening and wall. Make sure condenser filter is clean and open. Replace HP switch if defective or
bypass to test. Make sure electrical connections are tight and secure.
4. CAUSE:
Compressor contactor open or burned. REMEDY: Replace if necessary.
5. CAUSE:
Refrigerant Leak; no freon. REMEDY: Locate leak and repair. Evacuate unit and recharge.
6. CAUSE:
Loose or defective wires. REMEDY: Tug on wires to see if they pull away from the connections,
including compressor. Repair/Replace any wires & terminals as required.
7. CAUSE:
Open or shorted run capacitor. REMEDY: Repair or replace.
8. CAUSE:
Defective "condensate alert" cut-out switch. REMEDY: Check and replace.
9. CAUSE:
Condensate tank could be full, but red alert light could be defective. REMEDY: Replace light.
10. CAUSE:
Defective compressor. REMEDY: Check for shorts, opens and grounds. Remove & replace
compressor. Recharge. Test run.
TROUBLESHOOTING GUIDE
b) loose wires.
18
Hide quick links:
Advertisement
Table of Contents
