Question about Hayward Pool & Spa

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

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.

1 Answer

Mike Tellegen

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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

2 Related Answers

Anonymous

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

Anonymous

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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HS
Water Temperature Sensing Error

A) Inlet water temperature sensor is reporting a temperature in excess of 104 degrees.
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or
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What if code sf and h5 comes up

The two may be related? If the right problems are present...
HS = High Limit Sensor
SF = Temperature Sensor or Thermistor
Heaters Maximum Water Temperature has been Exceeded.
Heaters Set temperature not in line with actual water temperature.

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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