Question about Hayward Pool & Spa

1 Answer

Hayward sum xl140 heat pump heater f5 code what does the code signify

Posted by Cheryl Thornburg... on


1 Answer

Jim Carson

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 5 achievements.


    Visited the website for 3 consecutive days.

    New Friend:

    An expert that has 1 follower.

  • Expert
  • 107 Answers

It means it time for a new one

Posted on Apr 12, 2019


3 Related Answers

Kieran Ruppert

  • 990 Answers

SOURCE: Hayward H300 heater runs but will not heat water

Your internal by-pass could be stuck open or the disc could be worn to the point of letting water pass too fast. Or your thermal control valve could be stuck open. These are both found in your water header going into the heater. Hope this helps, good luck.

Posted on Dec 10, 2009



  • 78 Answers

SOURCE: Hayward pool heater - p5 code

The code is "PS" for Pressure Switch and means there is insufficient pressure to operate (low flow) or the switch itself is bad.

Posted on Apr 22, 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:

Posted on Jul 05, 2010

Add Your Answer


Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Hayward heatpro running but not heating. The "run" light is yellow but it should be green

i have found nothing in any of my heater manuals to account for the color of the light. in every instance, the light is either lit or not. the color does not change.
as for the not heating, if the outside temperature is less than 60 degrees, your heat pump will not work well. as heat pumps do not heat water very efficiently, there may not be a noticeable difference in water temp. the best way is to measure the temperature going into the pump (outside ambient temperature) and the temperature of the air exiting the top of the heater.
if the outside temp is 70 and the air out of the heater is 65, there is a 5 degree temperature applied to the pool water. this can be diminished due to transfer of heat to system

Jun 09, 2015 | Hayward 116k BTU HeatPro Digital Heat Pump...

1 Answer

I have a hayward h400ed2 heater and when turned on to heat the temperature can only be increased or decreased in incriments of 10 to 15 degrees. I also used to get a reading of Lo. It didnt happen all the...

already answered your earlier post. the code LO signifies that there isnt enough water flow to allow the heater to run. as for the temp, i wouldnt worry about the display. it will never exceed factory setting. sounds like a stuck button

Jun 16, 2014 | Hayward H-series Electronic Gas Pool...

1 Answer

What does the LP code mean?

low pressure ,MEAN low water pressure going to the unit or low pressure refrigerant is heat pump correct ?

Jun 09, 2013 | Hayward Pool Products Hayward Heat Pro -...

1 Answer

OP error code. What is wrong with my Hayward pool

OP is the error code for a faulty Temperature Sensor. Try replacing the Temperature Sensor. I have seen many of these units have the wires chewed up by mice, etc., so you may want to check the wiring for any damage.

I’m happy to help further over the phone at

Jul 03, 2010 | Hayward 116k BTU HeatPro Digital Heat Pump...

2 Answers

My hayward pool heater is displaying P5 and the fan is not moving. what does this mean?

You heat pump is actually displaying "PS" for Pressure Switch. Either there is not enough water flow or the switch could be bad. If you have a sand filter, put the filter head in the "bypass" mode and try again. If the heater works, filter problem. If not, heater problem. Instruction book found here:

Apr 08, 2010 | Hayward 116k HeatPro Heat Pump HP3100

2 Answers

Hayward pool heater - p5 code

The code is "PS" for Pressure Switch and means there is insufficient pressure to operate (low flow) or the switch itself is bad.

May 26, 2009 | Hayward 116k HeatPro Heat Pump HP3100

Not finding what you are looking for?
Pool & Spa Logo

Related Topics:

358 people viewed this question

Ask a Question

Usually answered in minutes!

Top Hayward Pool & Spa Experts

john h

Level 3 Expert

23504 Answers


Level 3 Expert

85239 Answers

Paul Carew

Level 3 Expert

3527 Answers

Are you a Hayward Pool and Spa Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides