Question about Jandy Lite 2 Natural Gas Pilot Light Heater
A FL-4 error is an ignitor failure. There are three things that need to be checked to correct the issue. First is the ignitor. Replace if broken or burnt or cracked. Second is the 220/120 vac conversion plug that is plugged into the main board in the burner compartment behind the box cover. The black transistor may be burnt. Replace if burnt. This will happen often if the heater is connected with 220 vac power source. I highly recommend connecting to a 120 vac source if possible. The heater seems to like it more. But remember when switching power supplies to follow all manufacturers instructions on doing so. If after replacing these two items the FL-4 problem still occurs, the control board in which the conversion plug plugs into also may need replacement. This should correct the fl4 error.
Posted on Sep 30, 2011
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Posted on Jan 02, 2017
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So, you replaced part R367100 (Igniter)? This part if very susceptible to failure if touched. I would inspect and/or run a continuity check to make sure it has non cracks. Does it glow red when you attempt to start the heater? Remember, that is the how it ignites the flame, by getting red hot.
If it glows red hot, but does not light then I'd do the following testing in between;
Check that the inline fuses on the igniter aren't blown,
Check if the control board is sending a charge,
Check the flame sensor for gunk build up. Unfortunately to replace the flame sensor look like you have to purchase a whole new burner assembly to get a new flame sensor.
I also believe there is a toggle switch on the front door. It may need to be depressed before the system will ignite.
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Igniter circuit is open. Check fuses on igniter wires. Identify and correct loose or broken wires.
Element has a fine crack in it. Replace
Igniter fault. Replace igniter.
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