Bard W42HC-A - User Manual

Questions and Answers

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Amy LindseyAug 12, 2025
What to do if the compressor won't start on my Bard W42HC-A Heat Pump?
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  Emily DelgadoAug 12, 2025
  If the compressor of your Bard Heat Pump isn't starting, there could be several reasons. First, wait for the 5-minute delay or try jumping the board's "speed up pins". It could also be due to a low or high pressure fault, in which case you should check the wiring circuit and unit pressures. Another possibility is no power to the board, meaning the unit lacks voltage, the transformer is faulty, or the wiring is incorrect. If there's no "Y" compressor input signal, inspect the thermostat and unit wiring, and check the unit's phase. If there's no "CC" compressor output signal, check the compressor contactor and the compressor itself. Lastly, a faulty board could be the issue, requiring a replacement of the defrost board.
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vharrisonAug 16, 2025
Why is the outdoor fan motor not running on my Bard W42HC-A Heat Pump?
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  Jill CoxAug 16, 2025
  If the outdoor fan motor of your Bard Heat Pump isn't running during cooling or heating (except during defrost), the heat pump control might be defective. Check across the fan relay on the heat pump control (Com-NC) and consider replacing the heat pump control. Alternatively, the motor itself could be defective; check for open or shorted motor windings and replace the motor if necessary. Lastly, a defective motor capacitor could be the cause. Check the capacitor rating and look for open or shorted capacitors, replacing the capacitor if needed.
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hreedAug 19, 2025
How to troubleshoot a reversing valve that doesn't energize on a Bard W42HC-A?
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  Haley HarrisonAug 19, 2025
  If the reversing valve of your Bard Heat Pump isn't energizing during heating, it might be due to a defective heat pump control. Check for 24V between RV-C and B-C, inspect the control circuit wiring, and if necessary, replace the heat pump control. Another potential cause is a defective reversing valve solenoid coil. Check the coil for opens or shorts, and replace the solenoid coil if needed.
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Matthew HernandezAug 23, 2025
What to do if the Bard W42HC-A compressor will not start?
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  Alyssa WatsonAug 23, 2025
  If the Bard Heat Pump compressor isn't starting, first, you might need to wait for a 5-minute delay or try jumping the board's "speed up pins". If that doesn't work, a low or high-pressure fault could be the issue. In that case, check the wiring circuit and unit pressures. If the problem persists, recheck the steps. As a last resort, the defrost board may need replacement.
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Katie DyerAug 27, 2025
Why is the Bard Heat Pump outdoor fan motor not running?
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  Melanie BrownAug 27, 2025
  If the outdoor fan motor on your Bard Heat Pump isn't running (during cooling or heating, except during defrost), the issue could stem from a few things. It might be a defective heat pump control, in which case you should check across the fan relay on the heat pump control (Com-NC) and consider replacing the heat pump control. Alternatively, the motor itself could be defective; check for open or shorted motor windings and replace the motor if needed. Lastly, a defective motor capacitor could be the culprit; check the capacitor rating and look for open or shorted capacitors, replacing the capacitor if necessary.
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richard62Aug 31, 2025
What to do if the Bard Heat Pump reversing valve does not energize?
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  Stephanie AllenAug 31, 2025
  If the reversing valve on your Bard Heat Pump isn't energizing during heating, it could be due to a defective heat pump control. Check for 24V between RV-C and B-C, inspect the control circuit wiring, and consider replacing the heat pump control. Another possibility is a defective reversing valve solenoid coil; check for open or shorted coils and replace the solenoid coil if needed.
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williamryanSep 4, 2025
How to troubleshoot a Bard W42HC-A that will not go into defrost?
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  Joseph AnthonySep 4, 2025
  If your Bard Heat Pump isn't going into defrost mode, it could be due to a defective temperature sensor or heat pump control. To diagnose, disconnect the temperature sensor from the board and use a jumper across the "SPEEDUP" and "SEN JMP" terminals. This should initiate a defrost cycle within one minute. If it goes into defrost, replace the temperature sensor. If it doesn't, replace the heat pump control.
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Christopher CarrSep 7, 2025
What to do if Bard Heat Pump will not come out of defrost?
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  Tara TorresSep 7, 2025
  If your Bard Heat Pump won't come out of defrost, the temperature sensor or heat pump control might be defective. Try using a jumper across the "SPEEDUP" terminal. This should cause the unit to exit defrost within one minute. If it comes out of defrost, replace the temperature sensor. If it doesn't, replace the heat pump control.