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Whirlpool WHP44 Installation Instructions Manual page 13

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Problem
Compressor runs—goes off on
overload
Compressor cycles on overload
Unsatisfactory Cooling
System runs continuously—little
cooling
Cause/Test Method and/or Solution
Unbalanced power, 3PH. Test voltage.
Loose connection. Inspect connection. Tighten if needed.
Shorted or broken wires. Test circuits with ohmmeter. Replace if needed.
Shorted or open capacitor. Test capacitor.
Shorted or grounded compressor. Test motor windings.
Compressor stuck. Use test cord.
Faulty compressor contactor. Test continuity of coil and contacts. Replace, if needed.
Low voltage. Test voltage.
Overcharge of refrigerant. Recover part of charge.
Dirty outdoor coil. Inspect coil. Clean, if needed.
Improperly located thermostat. Relocate thermostat.
Wrong type of expansion valve. Replace valve.
Expansion valve restricted. Replace valve.
Undersized expansion valve. Replace valve.
Inoperative expansion valve. Check valve operation. Replace if needed.
Faulty reversing valve. Replace valve or solenoid.
Unbalanced power, 3PH. Test voltage.
Shorted or open capacitor. Test capacitor.
Compressor stuck. Use test cord.
Low voltage. Test voltage.
Improper cooling anticipator. Check resistance of anticipator.
Shortage of refrigerant. Test for leaks. Add refrigerant.
Restricted liquid line. Replace restricted part.
Overcharge of refrigerant. Recover part of charge.
Dirty outdoor coil. Inspect coil. Clean, if needed.
Noncondensibles. Recover charge. Evacuate and recharge.
Recirculation of condensing air. Remove obstruction to airflow.
Wrong type of expansion valve. Replace valve.
Expansion valve restricted. Replace valve.
Undersized expansion valve. Replace valve.
Shortage of refrigerant. Test for leaks. Add refrigerant.
Restricted liquid line. Replace restricted part.
Open element or limit on electric heater. Test heater element and controls.
Dirty air filter. Inspect filter. Clean or replace, if needed.
Dirty indoor coil. Inspect coil. Clean, if needed.
Not enough air across indoor coil. Speed blower. Check duct static pressure.
Infiltration of outdoor air. Check windows, doors, vent fans, etc.
System undersized. Refigure cooling load.
Broken valves. Test compressor efficiency.
Inefficient compressor. Test compressor efficiency.
Wrong type of expansion valve. Replace valve.
Expansion valve restricted. Replace valve.
Oversized expansion valve. Replace valve.
Undersized expansion valve. Replace valve.
Inoperative expansion valve. Check valve operation. Replace if needed.
Flowrator not seating properly. Check flowrator and seat or replace, if needed.
13

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