Question about Jandy Laars LX Pool Heater / 400,000 BTU / Natural Gas
As a test, I have installed this used pool heater on our pool with a 1.5 hp pool pump. I get no LED problem read out, but the gas won't ignite. The blower comes on for about 30 seconds, then goes off completely, at which time the screen says "Low Pressure". This heater sat unused for about 3 years, and had only a summer's jacuzzi use prior to that. Good shape.
Is there a pressure problem? What is the problem?
I am intending to use this as an external heater to heat a small jacuzzi with a 1 hp motor. Will the jacuzzi pump provide enough pressure to fire the heater?
The low pressure indicator is for the gas pressure not the water pressure. The heater won't ignite because it's not getting gas to the igniter. Check gas supply, if okay, check gas connections, valves, etc.
The 1 HP motor should be fine on the jacuzzi.
Posted on May 26, 2009
SOME OF THESE DO NOT USE SPARK THEY HAVE GLOW RODS REMOVE DOOR AND LOOK AT THE BOTTOM OF THE HEATER AND SEE IF THERE IS A GLOWING RED LIGHT ( IS THIS A TRUE LX OR LXI )
Posted on Aug 19, 2009
The ignitor is a hot surface type it does not spark. If you look in the "window" during start up you will see a glow best done when it is dark.
The problem sounds like the air flow switch You said the fan comes on for 30 seconds and stops. You are not going any further into the start cycle becaues it is not sensing fan air flow and shutting down.
Look for the air tube clear or white about 1/2 wide make sure it is connected and does not have any holes in it. Mice/rats chew trough it all the time. Don't blow in the tube this will damage the air switch
Posted on Jun 23, 2009
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Posted on Jan 02, 2017
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