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What does this mean Hayward pool heater h150FDN gives us an hs or h5 error?

Posted by Anonymous on

  • Meriton Kadriu
    Meriton Kadriu Jun 15, 2015

    Yes thank you very much TOM W. That was the problem. The bypass valve was open on mine and gave me the HS error. Turned the bypass valve off and worked beautifully.
    Thanks again.

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  • Hayward Master
  • 1,631 Answers

HS = High Limit Sensor
Heaters Maximum Water Temperature has been Exceeded.
A few reasons this occurs...

  • Low water flow thru heater, check :
    • Dirty Filter
    • Opened By Pass Valves
    • Plugged pump impeller
    • Dirty/Full baskets at skimmer or pump
    • Anything that may reduce water flow
  • Sensor could actually be doing its job, in a different aspect, Thermostat failure, and water is overheating in spa or pool?
But anyway, your heaters fault code you asked about is: hs, not h5

Posted on Jun 15, 2015

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Posted on Jan 02, 2017

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  • 760 Answers

SOURCE: Our Hayward gas heater keeps giving us a H5 error

Could the Error code be HS? That is high temperature limit. Perhaps you' don't have enough flow, allowing the heater to heat the water to a temperature higher, than the thermostat setting. Make sure your bypass valve is closed, allowing full flow through the heater. Check your filter pressure differential , and skimmer baskets.
You didn't give your model number, and there are many models. You can go the Hayward website below and select your exact model number and download the manual. The manual will explain each error code.
http://www.haywardnet.com/inground/products/manuals.cfm

Posted on Jul 05, 2010

  • 760 Answers

SOURCE: CE error code on hayward pool heater

CE= Communication Error between Control Module
and Display Interface Assembly
1. Disconnect and then reconnect power to heater.
2. Check for faulty wiring or connection.
Inspect Display Interface Wiring. Ensure Display Interface Plug is securely attached to Control Module. .
3. Control Module and/or Display Interface Assembly
are defective.Replace Control Module and/or Display Interface Assembly.
Here is a linkt oH aywardmanuals:
http://www.haywardnet.com/inground/products/manuals.cfm

Posted on Jul 05, 2010

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SF = Temperature Sensor or Thermistor
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A few reasons this occurs...
  • Low water flow thru heater, check :
    • Dirty Filter
    • Opened By Pass Valves
    • Plugged pump impeller
    • Dirty/Full baskets at skimmer or pump
    • Anything that may reduce water flow
  • Sensor could actually be doing its job, in a different aspect, Thermostat failure, and water is overheating in spa or pool?
But anyway, your heaters fault code you asked about is does not necessarily mean they failed. They are informing of a problem.

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You didn't give your model number, and there are many models. You can go the Hayward website below and select your exact model number and download the manual. The manual will explain each error code.
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