Question about Hayward Pool & Spa

Open Question

My Hayward H series pool heater keeps heating when desired temperature reached. Last night I set the dial to reach 80F, and this morning the temp. was 90F and still burning!

Posted by Don Taylor on

Ad

5 Related Answers

Anonymous

  • 90 Answers

SOURCE: Heater cycles on and of, pool/spa does not reach desired temp

hello, It sounds like you may not be getting circulation thru the heater. Make sure the valves are open to allow water to pass thru the heating system. Some systems use a bypass on the heater so there is not a lot of wear on the coil system in the heater. If it is not circulating it will get too hot and the safety shut down will occure. If you are getting water circulating thru the heater, then the thermocouple or auto start igniter system is not working correctly. It is trying to start and can't then recycles. If the burners are igniting on the startup and then shutting back down you may have a bad control unit or thermal sensor unit. Since the unit is gas have a professional service it for you. Good Luck, RAC

Posted on Apr 20, 2009

Ad

Bill Long

  • 606 Answers

SOURCE: AC does not cool to the temp as desired

Does the thermostat have a mercury bulb in it, if it does you need to level the thermostat.
When you take the cover off, on the sub base there should be a couple of marks or grooves
One on each side of thermostat, you need to take a level and loosen the screws on the sub base
And with the level completely level align those two marks with the level.
If you don’t have a mercury bulb, then your thermostat may need the heat anticipator adjusted, some you can adjust the bi-metal coil, but I haven’t done that, so I couldn‘t tell you how to do it, or you just have a bad thermostat.

Posted on Apr 26, 2009

Ad

joespools200

  • 246 Answers

SOURCE: Pool heater shuts off itself before the set temp is reached

need new board control kit

Posted on Aug 25, 2009

Dune2996

  • 33 Answers

SOURCE: The heater come on and cycles on and off, but the

This could be the flow rate / value...maybe the unit is under rated in its BTU value. But if it did work fine and heat the water ok then its not this...next thing would be the system control switches...each of these needs to be tested one by one to see if it cutting out the system too early...failing that it is the flame being produced and the heat value is cold see if the flames are blue or yellow...blue is fine nice and hot yellow is too cold to heat the water passing through

http://www.laarsman.co.uk

Miles

Posted on Jun 05, 2010

DAVID

  • 472 Answers

SOURCE: thermostat is heating house to desired temp before programmed time

there is a installer setup in this thermostat. do you still have the book?
you will need to gain access to the installer setup/programming and in it you will find a setting called auto recovery turn it off. what this does is after a few days of initally running the system figured out it needed to come on earlier and is starting before the set time to come on... you can turn it off and then will have to adjust depending on insulation value/construction type of home how soon you want it to come on so that it reaches desired temperature when you want...
hope this helps you out,,,

Posted on Dec 03, 2011

Add Your Answer

×

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

2 Answers

Heater temp is 78 the water temp 68 how do I reset heater temp to match pool temp.


Sounds like a faulty temp sensor. Check it for debris, clean it good and see if that does it. If not try replacing it.

Jun 02, 2015 | Pool & Spa

2 Answers

Hot Tub Reaching Temperature but will not maintain


Bad thermostat is sticking.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Oct 14, 2012 | Pool & Spa

1 Answer

I have a haywood h series h 400 pool heater. Each night the the pool pump timer runs b/t 12-7am.. The heater was working fine. and pool temp is around 70-80.. However, lately the heater which is on when...


Allheaters run off of a thermostat just like the heat to your house. It will shut off once heated to the selected temperature. Turn up the temperature, and monitor it for a couple days.

Dec 28, 2010 | Hayward H-series Electronic Gas Pool...

1 Answer

Heater shuts off 10 degrees before pool reaches the set temp.


The thermistor is probably failing and needs to be replaced. You can probably replace it yourself. We sell the part at www.arrwomotor.net

May 29, 2009 | Hayward H Series Induced Draft Abg 100,000...

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

Related Topics:

129 people viewed this question

Ask a Question

Usually answered in minutes!

Top Hayward Pool & Spa Experts

john h

Level 3 Expert

23504 Answers

Marvin
Marvin

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

Loading...