Question about Hayward H Series Pool & Spa Heater 200k Btu Propane Gas Milivolt Ignition H200p1

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Hayward pool heater

The pilot will light but when I let off the button to turn it to on it goes out

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  • Hayward Master
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Bad thermocouple replace

Posted on Mar 19, 2016

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Posted on Jan 02, 2017

  • 139 Answers

SOURCE: Hayward Comfortzone pool heater pilot will stay

check for continuity at all control and safety components,i.e. press switch,high limits,thermostat,on/off switch and flame roll out switch

Posted on Jun 21, 2009

  • 139 Answers

SOURCE: pilot will not stay lit after button release

most likely you have a thermopile that has low output. it takes about 100mv to maintain pilot light

Posted on Jun 25, 2009

  • 9 Answers

SOURCE: hayward pool heater pilot won't stay on

a short circuit in the heater wire will cause an immediate loss of all flame, pilot and main; check the wiring diagram and make sure your pilot wires go to the PP and PP/TH terminals; make sure the terminals are clean and the connection is good; you are dealing with .320 volts DC, any bad connection drops the voltage below the required minimum.

Posted on Jun 28, 2009

  • 139 Answers

SOURCE: pool heater won't light

it is possible to light a pool heater with an ignition device,however it is not advisable.since your unit is calling for heat and the gas valve is opening,i suspect you have a faulty ignitor

Posted on Jul 24, 2009

  • 990 Answers

SOURCE: Heater won't stay lit

On your main gas manifold you have orfaces that screw into it at each burner. Remove these and see if their are small spider webs in them. They will look like little lint balls. They can keep your main burner from getting gas and in turn keep the heater from sensing flame. The pilot lights and the heater starts but no flame at the main will shut it rite down. See if this helps.

Posted on Dec 18, 2009

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1 Answer

H250 hayward pilot series


Those particular heaters can be tricky because they came a few different ways, including a millivolt to electronic spark conversion that was done on site.
Your best bet is to get an old pool tech out there to see if they can get it fired up. The variables involved are far too extensive to troubleshoot in this format. Good luck with it.

Jul 02, 2013 | Hayward H Series Electronic Ignition...

1 Answer

How do i light the pilot light for the hayward


The lighting instructions are usually located inside the heater on the inside of the access panel or on the firewall near the gas valve.

Most millivolt heaters require you to turn the gas valve knob to the pilot light position and then depress the knob while lighting the pilot through the pilot hole. This varies depending on the exact model.

Aug 07, 2012 | Hayward 250 1 Millivolt Propane Pool...

1 Answer

Hi I have an Hayward H Series pool heater and the pilot doesn't stay lit when I depress the control to turn it on. Any quick solution for that ?


Check the thermocouple that the pilot light heats up. If it is not working then the gas to the pilot will not stay on.

Jul 01, 2009 | Hayward H Series Pool & Spa Heater 400k...

1 Answer

Hayward pool heater pilot won't stay on


a short circuit in the heater wire will cause an immediate loss of all flame, pilot and main; check the wiring diagram and make sure your pilot wires go to the PP and PP/TH terminals; make sure the terminals are clean and the connection is good; you are dealing with .320 volts DC, any bad connection drops the voltage below the required minimum.

Jun 27, 2009 | Hayward H Series Millivolt 250,000 Btu...

1 Answer

Pilot will not stay lit after button release


most likely you have a thermopile that has low output. it takes about 100mv to maintain pilot light

Jun 24, 2009 | Hayward 250kbtu Ng Pool Heater - Inground

1 Answer

H250 heater spark, but no pilot


Spider nest in the pilot assembly. You should be able to pull the pilot out, remove the pilot tube and orifice inside, and see and clean out the silk.If not, a new assembly is about $100 from a pool store. We sell them at www.arrowmotor.net

Jun 13, 2009 | Hayward 250kbtu Ng Pool Heater - Inground

1 Answer

Have pilot light lit but unit willnot come on hayward h350 heater


check millivolt output,if it is in normal range(400-600)check for continuity on pressure switch,flame rollout and high limits.

Jun 06, 2009 | Hayward H Series Pool & Spa Heater...

1 Answer

Heater won't stay lit


On your main gas manifold you have orfaces that screw into it at each burner. Remove these and see if their are small spider webs in them. They will look like little lint balls. They can keep your main burner from getting gas and in turn keep the heater from sensing flame. The pilot lights and the heater starts but no flame at the main will shut it rite down. See if this helps.

May 05, 2009 | Hayward H Series Millivolt 250,000 Btu...

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