Question about Hayward 2001 Series Millivolt Gas Pool Heater 200000 BTU ()

1 Answer

I have a H150 millivolt gas system. I can not get heater to light normally, i have to jump the 2 th wires to get it to light .It will stay lite for around 10 minutes then go out. What can I check to fix problem?

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    President:

    An expert whose answer got voted for 500 times.

  • Hayward Master
  • 1,378 Answers

Thank you for posting your question here on Fixya.com.

First you will need to get a hold of a digital or analog multimeter and set it for the lowest range of Ohms you can. Your safety circuit is a string of several switches all strung together in a row with the gas valve at the end and the beginning of said string. Any one switch being open or a bad connection anywhere in the circuit and the heater will not fire.

You task is to remove one end of the circuit from the valves TH or TT post and put one end of you meter on that wire and the other end on the TH/PP terminal. It will likely read infinite resistance. Leave one meter lead where it is and remove the other. Follow the circuit from the connected lead up to the first switch. Check continuity from the lead left connected to both sides of the switch. If there is continuity to both sides the switch is fine. Keep moving from switch to switch until you find the bad switch or connection. There may be more than one. When the circuit is working properly and there is nothing within the heater to cause it to shut off you should have 5 ohms or less across the entire circuit. Once you get the reading to that level the heater will work as it should

If you are not familiar with the process I described you would be better served hiring a pool technician to perform this repair as you can cause significant damage to the heater if you do not repair it properly.

If this answer does not fix your problem, please comment with additional details prior to rating the answer. Positive feedback is appreciated once your problem is solved!

John

Posted on Sep 05, 2010

  • jm4810 Jun 06, 2011

    John, I had the same problem. My circuitry tested OK. It turned out that my heat exchanger was all sooted up and was causing the limit switch to trip shutting off the system afer about 10 minutes. He should remove the top of the heater and inspect the heat exchanger. If it's sooted up he has to clean it. Since it's a big proceedure and requires drilling out some rivots, etc, he may want to hire a professional. If he wants to to it himself then he should look up the proceedure on harward's site and figure about 3 hours of work. Once done it will run like new until of course another problem crops up.

    Hope this helps

×

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

Hayward heater h150 ignites and shuts off


check pilot generator if 500 millivolts to gas valve turn on switch if lowers should light if not check wires could be loose make sure flame sensor is above burner if not it wont sense flame

Jul 12, 2014 | Hayward H Series Pool & Spa Heater 400k...

1 Answer

I just replaced the pilot generator on a jandy lite2 and the pilot stays on but the burner will not light. I am getting over 500 millivolts at the gas valve. Any ideas? Thanks


500 millivolts is good to fired that heater, the minimum is 250. disconnect the wires connect to the gas valve be very carefulland see if the pilot stay on, if stay on get a piece the solid copper wire and jump the gas valve where the wires from the safety switches were connected and see if the heater fired. but before that check everi wire and safety switches for resistem ,also you water pressure switch,but also for any loose connection .

Jun 05, 2013 | Pool & Spa

1 Answer

Raypak problem, Pilot is lit, can jump TH to TH to lite, goes out when jumper is removed.


check how many millivolts the pilot is generating. if pilot stay lit and burners wont fire u have a problem with one of the safties, lose wire connection, tstat control

May 28, 2013 | Raypak Pool & Spa

2 Answers

I have a lite 2 the pilot is lit but the bruners wont lite up


pump must be running. or filter is plugged. or pad pressure switch it's located on the plumbing inside of the heater and has 2 wires going to it., you might lightly tap it with a screwdriver LIGHTLY ! or just replace it there a fairly cheap item around $20
Jay the pool pump motor repair guy longwood fl

Jan 14, 2013 | Jandy Lite 2 Natural Gas Pilot Light...

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...

2 Answers

Basically everything in the Laars Lite 2 heater


If this is a millivolt system then ALL your wiring connections have to be clean and tight. If there is just 1 connection that is not tight or corroded a little, then you will have your millivolts drop and it may not be enough to keep the main gas valve coil energized and the gas valve will drop out. Check your connections, including any crimped connections and wire nutted connections. Also check for any wiring for any worn insulation where the exposed wire may be grounding out. Hope this was of some help to you!! Good Luck!!

Nov 30, 2009 | Lite On Laars Lite 2 Heaters: 250,000BTU...

1 Answer

Empire wall heater with wall vent pilot light


It sounds like the gas valve is dropping out. Make sure the system is venting the exhaust(no restrictions). Then make sure all your wiring connections in the unit are tight. In a millivolt system if all wiring connections aren't tight and clean your circuit will drop in millivolts and the gas valve will drop out. The gas valve requires a certain millivolt to stay open. I hope I was of some assistance!! Good luck!!

Nov 29, 2009 | Empire Direct Vent Wall Furnace Millivolt...

1 Answer

Pilot is lit, but burner will not come on. I jumped TH/PP to TH then burner comes on. Pilot generator = 350mV.


More than likely the tempature control is defective, since you effectively bypassed that connection. I found a manual for your unit which shows different types of ignition. I'm not even sure if the millivolt system is covered in this manual. Here's the sight
http://shop.solardirect.com/pdf/pool-heaters/gas-pool-heaters/jandy-lite2manual.pdf

Jul 12, 2009 | Lite On Laars Lite 2 Heaters: 250,000BTU...

1 Answer

Pilot light on pool heater


One possible problem to that is a bad pilot generator, not a real common problem but often happens. To test the pilot generator, unhook the to wires that comes from the pilot assembly and hook to the gas valve. Wedge a screwdriver or something in the knob that you push down when regularly lighting the pilot so that gas will continue to flow to the pilot, if you dont hold it down it wont stay lit. Use a multimeter set on DC voltage and put prongs on the ends of the wires. If it is above 600 then it is good, a little bit below will still allow it to work, the pilot only needs like 100 millivolts to stay lit. If it is somewhere down around 500 or lower, then it should be replaced. Another cause, if the pilot generator is not bad, is that a switch in the circuit could be acting up and drawing all of the millivolts from the source before it gets back to the gas valve, in turn the pilot is not supplied with proper millivoltage to stay lit. This usually is the case if you use your heater and it works for a while but then shuts off, and the pilot goes off with it. You can test each switch without removing wires. Each switch should use 5-10 millivolts max. Put one prong on a ground, or just stick it in the ground, the guys i work with dont believe me that it works. And test one side of the switch with the other prong and then the other side to measure the millivolt drop across the switch. If all switches are good. Bad news, probably a gas valve issue. Although take the time to inspect the connections made at the gas valve and all other switches for that matter. A little rust, a little corrosion, can eat up millivoltage very quickly and this can be fix by using some sand paper or emory cloth to clean the terminals. Also check for loose connections, if you can wiggle the wire where it is connecting to the terminal, take it off and crimp it down a little tighter with some channel locks or something. Millivolt heaters are a pain in the but, that is why everybody makes and sells electronic ignition ones now.

Aug 10, 2008 | Lite On Laars Lite 2 Heaters: 250,000BTU...

Not finding what you are looking for?
Hayward 2001 Series Millivolt Gas Pool Heater 200000 BTU () Logo

194 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

11057 Answers

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

Answer questions

Manuals & User Guides

Loading...