Whalen Heat Pump Troubleshooting
Whalen water source heat pumps provide efficient climate control solutions for commercial buildings. Although these units are designed for dependability, problems may still occur on occasion. If your machine is giving you trouble, this Whalen heat pump troubleshooting guide will help you identify and resolve performance issues with ease.
This information is for Closetline® WR Single-Stage series and WZ Two-Stage series models, such as the WR006 and the WZ 024-060, respectively.
Heat Pump Won’t Turn On
- Machine isn’t turned on - Turn the system switch to the on position and select the appropriate fan speed.
- Unit has no power - Reach out to an authorized electrician to solve the issue.
- Circuit breaker is off or tripped/fuse is blown - Turn the circuit breaker on. If issues persist, contact a licensed electrician for assistance.
- Wiring behind the front panel is improper - Call an authorized technician to remedy the issue.
- Wiring between thermostat and unit is faulty - Get in touch with a licensed technician for assistance.
- Voltage to fan motor is incorrect - Schedule an appointment with an authorized technician to address the problem.
- Fan motor internal overload protection mechanism is activated - Turn off the unit, let it cool down and then restart it. If the issue persists, contact a licensed technician for assistance.
Unit Short Cycles
- Air filter is dirty - Clean or replace the air filter.
- Machine is in “test mode” - Reset the unit or wait 30 seconds for the unit to reset itself automatically.
- Unit is oversized for the space - Replace the machine.
- Compressor is overloaded - Arrange for an authorized technician to handle the issue.
Only the Fan Runs
- Thermostat isn’t set properly - Ensure that the thermostat is set correctly for heating or cooling.
- Unit is locked out - Reset the unit by cutting the power and then restoring it.
- Compressor is overloaded - Contact a licensed technician to service the unit.
- Thermostat wiring is improper - Request assistance from an authorized technician to solve the problem.
Only the Compressor Runs
- Thermostat wiring is incorrect - Reach out to a licensed technician to correct the problem.
- Fan motor relay is defective - Seek help from an authorized technician to address the issue.
- Voltage to fan motor is improper - Schedule a service appointment with a licensed technician.
Cooling Mode Doesn’t Operate
- Reversing valve is faulty - Contact an authorized technician to remedy the issue.
- Thermostat wasn’t installed properly - Call a licensed technician for assistance.
- Thermostat wiring is incorrect - Reach out to an authorized technician to correct the problem.
Unit Isn’t Heating or Cooling Enough
- Air filter is dirty - Clean or replace the filter.
- Airflow is reduced or blocked by an obstruction - Request assistance from a licensed technician to address the problem.
- Fan motor isn’t operating properly - Get in touch with an authorized technician to solve the issue.
- External static is too high - Schedule a service appointment with a licensed technician to correct the problem.
- Ductwork has a leak - Call an authorized technician for assistance.
- Refrigerant charge is low - Contact a licensed technician for help.
- Metering device is restricted - Arrange for an authorized technician to handle the problem.
- Reversing valve is defective - Seek help from a licensed technician to correct the issue.
- Thermostat location isn’t ideal - Check for air drafts near the thermostat; if needed, relocate the thermostat to an area with more stable temperatures.
- Unit is undersized - Replace the machine.
- Scaling is present in the water heat exchanger - Call an authorized technician to remedy the issue.
- Inlet water is too hot or cold - Request a service appointment with a licensed technician to solve the problem.
Head Pressure Is High
- Air filter is dirty - Call an authorized technician to correct the issue.
- Airflow is limited or impeded entirely by a blockage - Schedule a service appointment with a licensed technician to resolve the problem.
- Fan motor isn’t running correctly - Request help from an authorized technician to address the malfunction.
- Water flow rate is incorrect - Seek out a licensed technician to remedy the issue.
- External static is too high - Contact an authorized technician for help.
- Pump is faulty - Consult a licensed technician for maintenance.
- Valve is defective or isn’t set properly - Enlist the help of an authorized technician to correct the malfunction.
- Inlet water is too hot - Reach out to a licensed technician to correct the issue.
- Air temperature in heating mode is out of range - Arrange for an authorized technician to address the problem.
- Scale is present in water heater exchanger - Call a licensed technician to solve the problem.
- Machine is overcharged - Contact an authorized technician for assistance.
- Non-condensables are present in the system - Schedule an appointment with a licensed technician to service the machine.
- Metering device is restricted - Seek the assistance of an authorized technician to address the malfunction.
Suction Pressure is Low
- Pump is defective - Consult with a licensed technician to solve the problem.
- Strainer or filter is obstructed - Clean or replace the strainer or filter.
- Water flow rate is improper - Call an authorized technician to remedy the issue.
- Water temperature is out of range - Contact a licensed technician to correct the problem.
- Air filter is dirty - Clean or replace the filter.
- Fan motor isn’t operating properly - Schedule a service appointment with an authorized technician to address the malfunction.
- Airflow is limited or restricted by a blockage - Reach out to a licensed technician to remedy the problem.
- External static is too high - Seek the assistance of an authorized technician to handle the issue.
- Too much cold air is entering the system - Speak with a licensed technician to schedule a service appointment.
- Refrigerant charge is too low - Contact an authorized technician to solve the issue.
Discharge Air Temperature in Heating Is Low
- Airflow is too high - Adjust fan motor speed. If needed, refer to the owner’s manual for guidance or seek assistance from an authorized technician.
- Operational performance is poor - Call a licensed technician to remedy the issue.
Humidity Is High
- Airflow is too high - Select the appropriate fan motor speed. Check the user’s manual for guidance if necessary.
- Unit is oversized - Replace the machine.
Only the Compressor Is Running
- Thermostat wiring is improper - Consult with an authorized technician to correct the problem.
- Fan motor relay is faulty - Schedule an appointment with a licensed technician to service the unit.
- Voltage to fan motor is incorrect - Call an authorized technician to address the issue.
Cooling Mode Doesn’t Work
- Reversing valve is defective - Reach out to a licensed technician to correct the malfunction.
- Thermostat wasn’t set up correctly - Seek the assistance of an authorized technician to remedy the issue.
- Thermostat wiring is improper - Schedule an appointment with a licensed technician to service the machine.
Modulating Valve Isn’t Working Properly
- Output setting is improper - Call an authorized technician to solve the problem.
- No valve output signal is present - Reach out to a licensed technician for help.
- Valve is faulty - Arrange for an authorized technician to correct the malfunction.