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

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The pilot won't light, don't hear gas going through the valve

Have a hayward H series H 200 pool heater & I can't get the pilot to light, I don't hear gas going through the valve? could it need a thermocouple?

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Yes when you do not hear any gas it is a thermocouple problem and it needs to be replaced.

Posted on May 22, 2009

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HOW CAN YOU TELL IF THE PILOT LIGHT IT LIT?


The Hayward H Series Pool Heater with standing pilot uses a standing flame to safety initiate combustion, and the standing pilot flame is uses to generate about 0.400 to 0.450 volts DC to operate the gas valve.

CAUTION: Your Hayward H Series Pool Heater is essentially a furnace. Only qualified technicians with proper training and tools should repair your heater.

Once you have completed the pilot start procedure in your heater manual, the pilot flame should be visible but it is difficult to see. The pilot is located at the bottom of the heater, to the left side of the burner chamber, about half way between the front and back of the heater. Before attempting to verify the pilot, it's wise to turn the thermostat to the full counterclockwise OFF position. There are two useful methods to verify the pilot: 1) Before you initiate the pilot procedure, place a small mirror on the floor of the heater on the left side of the burner chamber, just inside the combustion area. CAUTION: DO NOT attempt to place or remove this mirror while the heater is in combustion mode! After placing the mirror, you should be able to see the pilot assembly. Follow your pilot start procedure, then you should be able to see the pilot flame in the mirror before you turn the gas valve knob into the ON mode. Be careful to remove the mirror before initiating combustion. 2) Only when the pilot flame is on will the thermocouple generate the circuit voltage required to operate the gas valve. During the pilot start procedure, while the gas valve knob is still in the "pilot" position and the pilot flame is on, the circuit voltage can be measured at the gas valve without danger of initiating combustion. Using a volt meter, measure the voltage between the RED and WHT wires on the gas valve terminals. This measurement should be between 0.400 and 0.450 volts DC. If below, the gas valve will not operate even if the pilot is ON.

After verifying the pilot, be sure to remove the mirror (if used) and the voltmeter (if used), turn the gas valve to "ON", and return the front heater cover before initiating combustion.

May 24, 2014 | Hayward 250kbtu Ng Pool Heater - Inground

1 Answer

Pilot won't stay on


Burners don't have anything to do with the problem of pilot not lighting. Is the problem that flame will not 'stay' lit? Or you can't even get a flame to ignite? If former: possible bad pilot generator or bad gas valve. If latter, possible bad gas valve or no fuel to ignite.

Dec 23, 2012 | Hayward H Series Pool & Spa Heater 400k...

1 Answer

I am a new homeowner. I have an H400IDLunit that is a pool/spa combo. The code reads "00" in the heater window and does not change when the unit controlls are pressed. I have an aqualink...


I don't know if there is a pilot light, spark ignitor or thermal ignitor. I would determine by inspection what kind it has. If you open the front cover you will find a gas valve. It can be identified by following the gas pipe that enters the side of the heater and attaches to the gas valve. If the valve has a control knob on it that has an off, on and pilot position then it is a pilot type. If this control is not on the valve then the unit includes an automatic ignitor.

To light a pilot equipped system place the knob in the pilot position, push it down, and use a flame to light the pilot. If you hear gas flowing from the pilot but it won't light then there is air in the line and it needs to be purged. Holding the pilot lighting valve down long enough will purge it but may take a long time. Periodically you can check it by trying to light it. If it lights watch it for a while before trying to turn the heater on to make sure it is fully purged. Once the pilot is stable and the thermocouple is heated the pilot valve can be released and it should stay lit. If not, try again.

Don't get down and look into the burners while you are trying to start the system because it could flame out and burn your face. If you turn on the heater again then the gas valve should come on and the burner should light. You can usually hear a loud snap when the gas valve come on. You should then hear the gas flow to the burner. If the burner doesn't light you should be able to smell the gas. If it lights exhaust will be coming out of the vents in the top of the heater.

I am sure you will have more questions so please respond with them. I hope this helps.

Sep 04, 2011 | Hayward H-series Electronic Gas Pool...

1 Answer

My pool heater doesn't come on. The pilot is lit, and the valve to the ON position. I turn the front knub to heat but when I turn the switch on the front panel to ON it doesn't fire on (...


If your pilot light is lit, then you do have some gas flow, so it is probably the thermocoupler (the part heated by the pilot light) that is not telling the gas valve to open the main line. Sometimes it is just a case of residue on the thermocoupler that is not letting it get up to temperature and sometimes it has been knocked out of alignment and the pilot light is not putting direct heat on it.

A cleaning with steel wool (don't overdo it) would take care of the residue, and you can GENTLY move the thermocoupler back over the pilot flame. If neither of that helps then replace the thermocoupler.

Jul 01, 2011 | Hayward 250 1 Millivolt Propane Pool...

1 Answer

I have a haywood H150 and checked current using a dcv meter and getting .56 volts from thermocoupler. Also checked current throughout unit and volts reading the same everywhere but pilot won't stay...


The solenoid inside the gas valve, the part that is supposed to assume the pilot light once the thermocouple is hot, is failing. You need a new gas valve. Your part number is HAXGSV0001 for natural gas or HAXGSVS0003 for propane.

John

Jun 07, 2011 | Hayward H Series Millivolt 250,000 Btu...

1 Answer

How do you light the pilot of a Hayward Heatmaster 400


If you have a pilot that need's to be lit you turn your gas valve to pilot and hold it down while you light the pilot and keep it down for 30-40 seconds to let the thermopile heat up enough to hold the gas valve on by itself. Then turn the gas valve to on.
Most heaters now will have an electronic ignition for the pilot or a hot surface ignitor. If you have power going to the heater then you have one of these heaters.
Let me know how you do. If it is one of these we can go further. Good luck.

Jan 31, 2010 | Hayward 250kbtu Ng Pool Heater - Inground

1 Answer

Cannot tell where pilot, on or off is on gas valve


I assume you have a W-R and should see a small notch down around 5 o'clock or so. That position is where you depress the knob to light the pilot.

Jul 03, 2009 | Hayward H Series Millivolt 250,000 Btu...

1 Answer

Where is the pilote on hayward h300 pool heater


Follow the aluminum tube from the side of the gas valve down and it will lead you to the pilot assembly.

Jun 06, 2009 | Hayward H-series Electronic Gas Pool...

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