Question about Jandy Laars Lt 400,000 Btu Heater

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Where is the manual reset swith for an es1 fan fault on laars LT 400P

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  • Jandy Master
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Turn unit off then turn back on check pressure switch and safety circuit

Posted on May 01, 2016

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Posted on Jan 02, 2017

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flacooo1
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SOURCE: Laars Lt heater will not start- pressure switch light

it is time to check your filter make sure is not dirty and if your filter is clean and still doing this then the problem can be with one of the safety sensors they do have 2 hight limit switch located in the heater heather they re round with two wires on each one turn power off to heater and get a voltemer reader and check the hight limits for continuty they should read zero on your metter it can be your temp sensor heaters are so complicated that it is always good to have a pool tech service it I was a pool tech in california but now I am located in georgia

Posted on Jun 15, 2009

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Laars LX250 Manual Download


Laars LX250 Installation & Operation Manual

Models: LX250NL / LX250PL / LX400NL / LX400PL
Models: LT250NL / LT250P / LT400NL / LT400P

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Have you lost your Users Manual / Owner's Guide for your Laars LX250 Pool Heater?

Would you like a digital copy of the Installation / Operation Manual for easy searching of terms and quick reference?

Click here to download your pdf version of the Laars LX250 Pool Heater guide.

I hope that helps.

on Apr 19, 2010 | Jandy Laars Lt 250,000 Btu Heater

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Laars LT250 Manual Download


Laars LT250 Installation & Operation Manual

Models: LX250NL / LX250PL / LX400NL / LX400PL
Models: LT250NL / LT250P / LT400NL / LT400P

6285776.jpg

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Have you lost your Users Manual / Owner's Guide for your Laars LT250 Pool Heater?

Would you like a digital copy of the Installation / Operation Manual for easy searching of terms and quick reference?

Click here to download your pdf version of the Laars LT250 Pool Heater guide.

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on Apr 19, 2010 | Jandy Laars Lt 250,000 Btu Heater

1 Answer

Jandy lxi 400p air flow fault


faulty air flow switch, blower isnt producing enough air pressure, or blockage in venting

Feb 06, 2012 | Teledyne Laars Laars Lx Pool Heater /...

1 Answer

Jandy LT400 ES1 light blinking because vent on top was blocked while unit was running


The manual manual says to check the flue (blower motor). The ES1 fault probably means emergency shutdown 1. When the flue was blocked it likely overheated something like the blower motor or some safety device and the system board is now detecting this problem and is indicating ES1.

If one of my customers had this issue then I would be prepared to open the heater and probe locations in the heater with a volt/ohm meter while on the phone with Jandy's technical support number, 800-822-7933. They are likely to help you diagnose this issue and recommend a repair.

Please let me know how this works. Thank you.

Sep 01, 2011 | Jandy Laars Lt 400,000 Btu Heater

1 Answer

Code says es1......what is it.... on laarslt heater


1. Flue gas vent switch tripped.

(manual reset)

1. Verify proper fan operation. Check for restriction or

blockage of flue. Reset switch after problem is

corrected.

2. Vent switch fault. 2. Identify and correct loose connections or replace

switch.

Refer to qualified service personnel.

3. Fusible link fault 3. Identify and correct loose connections or replace

fusible link.
Refer to qualified service personnel.

This happens when the flue gases exceed a certain temperature. This only happens when there is a failed switch, or a bad burn created by incorrect gas or intake air, high wind scenerio or other similar incident to create an incorrect burn.

You may reset the switch manually, but it will most likely happen again, and if it does, its best to call out a technician.

Users manual can be found here:
http://www.jandy-downloads.com/pdfs/LXandLT_H02140B.pdf

Apr 14, 2011 | Teledyne Laars Laars LT Heater 400000 BTU...

1 Answer

Laars Lt spa heater service light


replace temp sensor its by the plumbing inlets or mounted to top of heat exchange

Feb 22, 2009 | Jandy Laars Lt 250,000 Btu Heater

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