Hayward ENPI6M User Manual (English)

Questions and Answers:

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Elizabeth BrowningAug 20, 2025
What to do if my Hayward Heat Pump shows high pressure protection?
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  triveraAug 21, 2025
  To address high pressure protection issues with your Hayward Heat Pump, several factors should be verified. Begin by checking the water flow and ensuring the water flow detector is functioning correctly. Inspect the valve opening and by-pass to confirm they are properly adjusted. Make sure the evaporator is not clogged. Verify that the water temperature isn't too high. If the issue occurred after maintenance, empty and evacuate the cooling circuit to eliminate any incondensable problems. If the fluid load is too high, remove fluid into a liquid bottle.
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Carla UnderwoodAug 22, 2025
What should I do if my Hayward ENPI6M has low pressure protection?
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  Virginia VargasAug 22, 2025
  If your Hayward Heat Pump displays a low pressure protection error, several actions can be taken. If the sensor is open or has short-circuited, check the AI/DI03 connections on the card or replace the sensor. Inspect for a large coolant leak, using a detector to find the source. Ensure adequate air flow by checking the ventilator rotation speed. Also, verify that the evaporator is not clogged and clean its surface if necessary.
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Ann WrightAug 25, 2025
What to do if my Hayward ENPI6M displays a flow sensor fault?
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  Justin KnightAug 25, 2025
  If your Hayward Heat Pump's flow sensor is showing a fault, start by checking the AI/DI02 connections on the card, and consider replacing the sensor if it's open or short-circuited. Also, ensure there is enough water by checking the filtration pump operation. Verify the stop valve opening and check the by-pass adjustment.
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Brooke DuncanAug 26, 2025
What to do if my Hayward ENPI6M Heat Pump shows Input/Output temperature difference > 13°C?
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  Richard AllenAug 26, 2025
  If your Hayward Heat Pump shows an input/output temperature difference greater than 13°C, especially in cold mode, it may indicate a lack of water. Check the filtration pump operation. Also, check the stop valve opening and the by-pass adjustment.
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jkerrAug 27, 2025
How to troubleshoot a fan motor fault in my Hayward ENPI6M?
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  Jeffrey HernandezAug 28, 2025
  If your Hayward Heat Pump fan motor is faulty, check for free rotation and inspect the CN97/DC connectors. If the motor is jammed or the connection is faulty, replace the motor. You can also check the DCFAN/CN97 connector and replace the motor if needed.
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Dominic BrooksAug 29, 2025
How to fix a water inlet sensor fault on my Hayward ENPI6M Heat Pump?
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  Ashley NealAug 29, 2025
  If your Hayward Heat Pump is experiencing a water inlet sensor fault, it might be due to the sensor being open or short-circuited. Verify the CN21/RES1 connectors on the board and the extension connector, or replace the sensor.
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Adrienne McconnellAug 31, 2025
What to do for antifreeze protection in Cold mode in Hayward Heat Pump?
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  Douglas RobbinsAug 31, 2025
  If your Hayward Heat Pump is showing an antifreeze protection in cold mode, where the water output temperature is less than 4°C, stop the heat pump and empty the condenser to prevent freezing.
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Henry BurtonSep 2, 2025
What does level 1 antifreeze protection mean for my Hayward Heat Pump?
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  Andrew PachecoSep 2, 2025
  If your Hayward Heat Pump is experiencing Level 1 antifreeze protection, where the water temperature is between 2°C and 4°C and the air temperature is below 0°C, stop the heat pump operation. Empty the condenser to avoid freezing. By default, the heat pump starts the filtration pump to prevent icing over.
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Christine TaylorSep 4, 2025
What should I do if my Hayward Heat Pump displays level 2 antifreeze protection?
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  John HaynesSep 4, 2025
  If your Hayward Heat Pump is experiencing Level 2 antifreeze protection, where the water temperature is below 2°C and the air temperature is below 0°C, stop the heat pump operation. Empty the condenser to avoid freezing. By default, the heat pump starts the filtration pump and the heat pump to prevent icing over.
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Nathan NicholsSep 5, 2025
Why does my Hayward ENPI6M stop when the exterior temperature is too low?
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  Donna AdamsSep 6, 2025
  If your Hayward Heat Pump stops due to the exterior temperature being too low, this means the operating limit has been reached. Stop the heat pump.