What to do if Heat Controller Heat Pump shows no fault code?
If your Heat Controller Heat Pump shows no fault code but there is no compressor operation, refer to the troubleshooting steps for when 'only fan operates'. If there is a compressor overload, check and replace it if necessary. If the control board is the issue, reset power and check operation.
How to troubleshoot main power problems in Heat Controller Heat Pump?
If your Heat Controller Heat Pump's green status LED is off, check the line voltage circuit breaker and disconnect. Also, check for line voltage between L1 and L2, 24 VAC between R and C on the CXM, and the primary/secondary voltage on the transformer.
Why does my Heat Controller Heat Pump unit short cycle?
If your Heat Controller Heat Pump is short cycling, start by checking and cleaning the air filter. Ensure the unit is not in 'Test Mode' by resetting the power or waiting 20 minutes for it to auto exit. The unit may be oversized for the space, so check the sizing load of the space. Also, check the compressor for overload and replace it if necessary.
What causes high head pressure in Heat Controller Heat Pump?
If your Heat Controller Heat Pump is experiencing high head pressure, start by checking and cleaning the air filter, ensure there are no airflow restrictions and that the fan motor is working correctly, and verify that the external static is not too high by checking the static valve. For cooling issues, check pump and valve operation and water flow rate. Also, ensure the inlet water is not too hot. Bring the return air temperature within design parameters. Inspect for scaling in the water heat exchanger, and check the superheat and subcooling. Reweigh the charge if the unit is overcharged and vacuum the system to remove non-condensables. Check the superheat and subcooling per chart if a restricted metering device is suspected.
What to do if Heat Controller Heat Pump shows FP1 Fault - Code 4?
If your Heat Controller Heat Pump displays the FP1 Fault - Code 4, which indicates a water coil low temperature limit, check the pump and water valve operation for reduced or no water flow in heating. Clean or replace any plugged strainers or filters, and adjust the water flow to the proper rate. Verify the antifreeze level with a hydrometer and clip the JW3 jumper for antifreeze (10°F) if the temperature limit setting is improper (30°F vs. 10°F). Ensure the water temperature is within the design parameters and check the temperature and impedance correlation per the chart.
What does HP Fault - Code 2 mean on Heat Controller Heat Pump?
If your Heat Controller Heat Pump is displaying the HP Fault - Code 2 for high pressure, check the pump and valve operation for reduced or no water flow in cooling and adjust the water flow to the proper rate. Bring the water temperature within design parameters. For heating issues, check for dirty air filter and clean or replace it, check fan motor operation and airflow restriction, and ensure there is no construction dust on the air coil. Also, ensure the external static is not too high by checking the static valve. Bring the return air temperature within design parameters and check the superheat/subcooling versus the typical operation table. Finally, check the switch continuity and operation, and replace if necessary.
What causes high humidity with Heat Controller Heat Pump?
If your Heat Controller Heat Pump is producing high humidity, check the fan motor speed selection and airflow. Also, the unit may be oversized, so recheck the loads and sizing, ensuring the sensible cooling load matches the pump capacity.
What does Over/Under Voltage - Code 7 mean on Heat Controller Heat Pump?
If your Heat Controller Heat Pump is experiencing over/under voltage issues, indicated by Code 7, check the power supply and 24VAC voltage before operation. Verify the power supply wire size, check compressor starting (you may need a hard start kit), and check the 24 VAC and unit transformer tap for the correct supply voltage.
What does Condensate Fault - Code 6 mean on Heat Controller Heat Pump?
If your Heat Controller Heat Pump has a condensate fault, Code 6, check for blockage and clean the drain. Verify the trap dimensions and location are correct, and ensure proper drainage by checking for piping slope away from the unit. Check the vent location for poor venting and inspect for moisture shorting to the air coil.
Why does only the fan run on my Heat Controller Heat Pump?
If your Heat Controller Heat Pump only runs the fan, ensure the thermostat is set for heating or cooling. Check for lockout codes and reset the power. Inspect the compressor overload and replace if necessary. Check the thermostat wiring at the heat pump and jumper for compressor operation in test mode.
General| Category | Heat Pump |
|---|---|
| HSPF Rating | Up to 10 |
| Stages | Variable Speed |
| Refrigerant | R-410A |
| Series | HTV |
| Heating Capacity | Up to 60, 000 BTU/h |
| Cooling Capacity | Up to 60, 000 BTU/h |
| Voltage | 208/230V |
Critical safety warnings and precautions for installation and operation.
Steps and checks required before installing the unit.
Guidelines for selecting and preparing indoor locations for vertical units.
Guidance on using factory-installed hanger kits for horizontal unit suspension.
Wiring instructions for connecting thermostats to the ECM interface board.
Field selection of low water temperature limits using jumpers.
Control enters lockout mode after consecutive faults, storing the last fault.
Protection against high refrigerant pressures, causing immediate compressor de-energization.
Detailed sequence of checks and adjustments for unit start-up.
Diagnosing high-pressure faults related to water or airflow.
Troubleshooting low pressure and loss of charge faults.
Diagnosing faults related to water coil low temperature limits.
Diagnosing faults related to air coil low temperature limits.
Addressing issues with reduced cooling or heating capacity.
Diagnosing and correcting low refrigerant charge issues.
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