Hayward HeatPro® User Manual (English)

Questions and Answers:

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Charles DeanJul 30, 2025
Why is my Hayward Swimming Pool Heater not running?
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  alicia59Jul 31, 2025
  Your Hayward Swimming Pool Heater might not be running due to several reasons. First, ensure the unit has power and the breaker hasn't tripped. Check that the thermostat is set high enough and that the 5-minute delay timer has completed. Low water flow can also prevent operation, so ensure the filter is clean, the filter pump is running, and cleaning devices are disconnected. Finally, very low outside temperatures can also prevent the unit from running; wait for warmer temperatures.
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Belinda LeeAug 5, 2025
What to do if my Hayward Swimming Pool Heater is running but not heating?
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  Joseph PollardAug 5, 2025
  If your Hayward Swimming Pool Heater is running but not heating, and the “Heat” or “RUN” indicator isn't on, there could be a few reasons. It could be a fan malfunction, in which case you should contact Hayward for service information. Alternatively, the thermostat might not be set high enough; adjust it to a higher temperature, consulting your thermostat instructions. A system component failure is another possibility, and you should contact Hayward for service information.
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alicia79Aug 11, 2025
What to do if Hayward Swimming Pool Heater runs continually?
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  Michael StephensAug 12, 2025
  If your Hayward Swimming Pool Heater runs continually, it could be due to the thermostat being set too high; try turning it down. Another potential cause is an electrical component failure. To address this, turn off the filter pump. If the unit continues to run after 2 minutes, turn off the power and contact Hayward for service.
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Rebecca McintoshAug 18, 2025
What to do if Hayward Swimming Pool Heater is cycling on and off too quickly?
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  Michael HamiltonAug 18, 2025
  If your Hayward Swimming Pool Heater is cycling on and off too quickly, it could be due to a bad valve or improper water flow. Check the valve settings and ensure sufficient water flow, verifying that the filter pump is running continually. If the cycling continues, turn the unit off to prevent compressor damage. Another possible cause is low refrigerant, low ambient temperature, or high humidity with low ambient temperature; check the evaporator coil for severe frost. If cycling persists, turn the unit off to prevent compressor damage.
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Chelsea ScottAug 23, 2025
Why is water coming from the bottom of my Hayward Swimming Pool Heater?
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  debracampbellAug 23, 2025
  Water coming from the bottom of your Hayward Swimming Pool Heater is often just condensation, which is normal. However, to rule out a water leak, turn the unit off for at least 2 hours while leaving the filter pump running continuously. If the water dries up, it was only condensation; otherwise, a leak is possible.

Hayward HeatPro® Specifications

General

Type	Heat Pump
Phase	Single Phase
Refrigerant	R-410A
Heat Exchanger	Titanium
Control	Digital
Minimum Flow Rate	30 GPM
Maximum Flow Rate	75 GPM
COP	6.0
Voltage	230V
Warranty	2 Years
Weight	Varies by model. Example (HP21404T): 245 lbs