Question about Hayward H Series Millivolt 250,000 Btu Pool Heater H2501

1 Answer

Heater ignites in spa mode but not pool mode . It worked fine last year but when I opened my pool this year I found it would not ignite in pool mode nor would the temperture control adjust. It does ignite and adjust in spa mode but I'm unsure why or if it is safe.

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 366 Answers

Sounds like you may have a bad temperature sensor. Check for damaged wires or have a technician test the sensors. they should have a certain resistance property, if they are not within the set parameters the sensor will not allow the heater to fire. If there is a separate thermostat for the pool side, check that as well.

Posted on Sep 15, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Hello, I have a Lochinvar ern 252, it was working great last season and was winterized properly... I just open the pool and now it is reading lockout ignition failure.... I can smell gas when it goes into...


two things, is it a spark igniter or hot surface?
if spark igniter is working then the pilot tube or fuel path to the igniter is plugged, a lot of times small spiders or insects will winter over in these tubes, build a small web or cocoon that restricts gas flow to the igniter. OR hot surface igniter not hot enough and will not lite the gas. can be tested with an amp probe or just replaced .

May 25, 2014 | Lochinvar ENERGY RITE 399000 BTU PROPANE...

1 Answer

Hayward spa pool heater pilot on, heat does not ignite burners


Don't really think the gas company would be checking your pool heater, they most likely just checked their gas connections. I would suspect a few things; control module, thermostat, gas valve, pressure switch. You say you get pilot light, and as long as it doesn't turn off and on, as if it is not being sensed, then I would suggest the control module is fine. If the pilot and main burner is controlled by the same valve, and your pilot light stays lit, then I would suggest the thermostat is fine. I take back the pressure switch since the pilot will ignite. I would check power to the gas valve solenoid and see if the control module is trying to open the gas valve. I would suspect low voltage, probably around 24v. If voltage is present and no gas, I would say you found the problem.

Apr 09, 2013 | Hayward H Series Pool & Spa Heater...

1 Answer

Heater will not ignite.


Try replacing the ignitor.

May 15, 2010 | Pentair Minimax NT Heater

1 Answer

Heater won't fire up after sitting the winter


Problem with the thermocoupler its not producing a minivolt of 250 plus that is needed to open the main gas valve

http://www.laarsman.co.uk

Miles

Apr 27, 2010 | Teledyne Laars Laars LT Heater 400000 BTU...

2 Answers

Describe your Jandy Laars Lite2 Pool & Spa Heater - Electronic Dual Ignition - 125,000 BT Problem FL 4 code and have changed igniter and still getting the FL4 code its the lite 2 model...


A. Check fuses on igniter wires. Identify and correct loose connections or broken wires. B. Measure room temperature resistance and ensure value is in the correct range. See manual for details. C. Replace igniter.

Jul 04, 2009 | Jandy Laars Lite2 Pool & Spa Heater -...

1 Answer

Low pressure reading on Pool Heater


I had this problem with ours last year. I replaced the water pressure switch and it began working fine. We later had a symptom that the blower would start but it would not ignite. The ignitor rod was corroded so I took it out and sanded it with some sandpaper---worked fine...until I dropped it trying to reinstall and it broke. Bought a new one and it works fine now.

Today's problem is related to the blower now.... it is always something, isn't it?!?

May 10, 2009 | Jandy Laars LX Pool Heater / 400,000 BTU /...

Not finding what you are looking for?
Hayward H Series Millivolt 250,000 Btu Pool Heater  H2501 Logo

151 people viewed this question

Ask a Question

Usually answered in minutes!

Top Hayward Pool & Spa Experts

Jay Finke
Jay Finke

Level 3 Expert

1338 Answers

Bill Jordan

Level 2 Expert

372 Answers

john h

Level 3 Expert

12104 Answers

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

Answer questions

Manuals & User Guides

Loading...