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Pool heater shuts off after 2 seconds - Jandy Pool & Spa

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  • Jandy Master
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Flame sensor or if wired 120 volts change black and white wires

Posted on Dec 01, 2014

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Posted on Jan 02, 2017

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SOURCE: Pool heater leakage

Chances are that the header or manifold is cracked. usually the heat exchanger themselves are not damaged from freeze, but either the rear manifold (header) or the front header (the one that pipes go in and out of). Sometimes both. Replacing the entire heater is not necessary, about $200 in parts usually. We have a schematic diagram of the LJ heater here: http://www.poolcenter.com/parts_heaters_lite2_lj_2003-present_pg1.htm

Rob Cox
POOLCENTER.com

Posted on Jan 28, 2009

  • 9 Answers

SOURCE: Laars Teledyne Pool heater flames on for 2 seconds, shuts off

You have no flame rectification.....LLD series heaters check for a signal through the flame to ground; if the module does not detect this signal, it go through two more trials for ignition and then lock out the module. There should be a flame rod and it may need cleaning. I use steel wool.

Posted on Jun 28, 2009

  • 112 Answers

SOURCE: swimming pool heater

You have to circulate the water or it shuts down.

Posted on Sep 03, 2009

  • 33 Answers

SOURCE: pool heater will not stay lit

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

Posted on Jun 05, 2010

  • 760 Answers

SOURCE: Pool heater shuts off after a few second

You didn't indicate your exact model. There are different versions of the H200 series. If it is milivolt then there is no electric, Must have correct milli-volt pilot generator. If it's electronic, check the air flow pressure switch on the combustion air.

Posted on Jul 18, 2010

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I have Jandy/Zodiac LRZE legacy heater and Jandy RS6 controller. When hooked up to RS6 and there is a call for pool heat the heater ignites but shuts off in about 30 seconds. When I disable the TSAT...


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Pool heater shuts off after a few second


You didn't indicate your exact model. There are different versions of the H200 series. If it is milivolt then there is no electric, Must have correct milli-volt pilot generator. If it's electronic, check the air flow pressure switch on the combustion air.

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Pool heater will not stay lit


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

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Burner cycles on and off within 2-5 seconds. What could the problem be? Model Teledyne Laars LLD250N


Sounds like the flame sensor. If the sensor doesn't see a flame, it shuts off. Good luck...Lee

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Swimming pool heater


try removing and cleaning flame sensor with fine steel wool.its located in lower end of burner box,usually opposite side of ignitor

Sep 02, 2009 | Teledyne Laars Laars Lite 2 Pool Heater...

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Laars Teledyne Pool heater flames on for 2 seconds, shuts off


You have no flame rectification.....LLD series heaters check for a signal through the flame to ground; if the module does not detect this signal, it go through two more trials for ignition and then lock out the module. There should be a flame rod and it may need cleaning. I use steel wool.

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Pool heater wont start but when i turn off the pump and start back again the pool heater comes on for 2 seconds and shuts off AGAIN


Heater must have water before it will fire up. There is a delay relay that may be dozing off. Not a bad thing but should be chk'd by a pool sevice.

May 26, 2009 | Heating & Cooling

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Laars Teledyne Pool heater flames on for 2 seconds, shuts off


pull out flame sensor and clean with sand paper or emmoring cloth then try again should work (small black wire with sensor sitting above burners)

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