Question about Teledyne Laars Laars Lite 2 Pool Heater 325,000 Btu / Natural Gas

1 Answer

I have a Laars lite 2 heater. The heater just stopped working. I inspected the unit and found out that the presure switch was broken. I have replaced the switch and now can't get the unit to start. the pilot light is on. Any ideas?

Posted by on

Ad

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.

  • Teledyne Laars 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 Aug 19, 2010

Ad

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 there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this 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.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Laars Lite 2 Heater will not go on


make sure little pump is moving if not check syphon tube going to pressure switch if ok check pressure switch

Jun 29, 2013 | Teledyne Laars Laars Lite 2 Pool Heater...

1 Answer

How do i increase the water pressure in my gas boiler


Check the sand filter is not blocked
Check the pump size is ok for the filter size
Pit your multiport to recirculation to give the boiler full pump presure.
You may have a pressure switch fault

Oct 09, 2012 | Lite On Laars Lite 2 Heaters: 250,000BTU...

1 Answer

I have a Laarslite TELEDYNE Laars LLG type and the main valve never turns on. I checked the switch/potentiometer and they are perfectly fine. I can not find any power source. where is the power to feed the...


on a LLG the pilot is the voltage 500 millivolts to you with a meter its 2000 on ohms check and clean all connections especially the gas valve check the hi limits sometimes they get oxidized

Sep 14, 2010 | Teledyne Laars Laars Lite 2 Pool Heater...

1 Answer

I have a laars lite 2 manual controls natural gas. The unit starts up runs strong for 5 mins shuts down restarts runs for now only seconds and shuts off


sounds like the hi limit switch is shutting it down,because it is not getting enough water,cloged filter, valve to heater notopen,bypass valve not closed,open up the water releif valve with the pump running should be alot of water running coming out of it.

Jun 13, 2010 | Lite On Laars Lite 2 Heaters: 250,000BTU...

1 Answer

MY LAARS LITE 2 wont light, the pilot is on, the temporature controls and the presure switch have been replaced...the pool guy is suggesting it could be the gas valve? Thoughts


Often if the pressure switch is open it is because of something keeping the pressuer low rather than a problem with the switch itself. If you take a small wire and bridge the pressure switch and other components in the system. If the heater fires when one of these are bridged that is where your problem. Two wires come from your gas valve and go to the pilot and another two are the safty circut. This is where you will find the components I am talking about. A small black rubber tube covers a place in the wire just above the burners and the pressure switch are the two big trouble spots.
If the black tube is shrunk around the wire then you have had a roll out problem with your flame. If it is your Pressure switch then it could be a dirty filter or a dirty basket. Or it could be a water flow problem and you will have to make all your valves are set to have water run through heater. I hope this helps.

May 07, 2010 | Teledyne Laars Laars Lite 2 Pool Heater...

1 Answer

Laars lite 2, mod-lg125n, sn. d03pj3400.


sounds like heat exch is plugged.remove top of unit and inspect for nests.could also be plugged with soot because of poor burner flame characteristics.with top off,turn htr on and look straight down into unit. you should be able to clearly see burner flames between fins. if not remove exchanger and clean

Jun 07, 2009 | Teledyne Laars Laars Lite 2 Pool Heater...

1 Answer

Pilot light on but heater will not start


check the high-limit switches. Under the inlet/outlet header. if either is open it will not allow you to fire up. my 150 degree switch was corroded and after jump9ng out, bam it worked.

May 25, 2009 | Teledyne Laars Laars Lite 2 Pool Heater...

1 Answer

Pilot stays lit, but burners underneathe do not light up or burn.


Check pump is working, if so could be stuck flow switch or gas valve fault get unit serviced

Aug 31, 2008 | Lite On Laars Lite 2 Heaters: 250,000BTU...

1 Answer

LAARS LITE 2 HEATER


sounds like a flame recification fault change flame sensor or thermal couple and get unit serviced

Jul 06, 2008 | Lite On Laars Lite 2 Heaters: 250,000BTU...

1 Answer

Laars lite 2


you will need to take pilot assembly out and replace thermal couple also check flue

May 04, 2008 | Lite On Laars Lite 2 Heaters: 250,000BTU...

Not finding what you are looking for?
Teledyne Laars Laars Lite 2 Pool Heater 325,000 Btu / Natural Gas  Logo

Related Topics:

79 people viewed this question

Ask a Question

Usually answered in minutes!

Top Teledyne Laars Pool & Spa Experts

Paul Carew

Level 3 Expert

3280 Answers

Craig Butler
Craig Butler

Level 3 Expert

1723 Answers

Jay Finke
Jay Finke

Level 3 Expert

1383 Answers

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

Answer questions

Manuals & User Guides

Loading...