20 Most Recent Jandy Lite 2 Natural Gas Pilot Light Heater Questions & Answers


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.

Jandy Lite 2... | Answered on Jun 08, 2019


replace fuseable link then check gas pressure if too low heater will overheat and soot if no sooting need chimney to protect from wind

Jandy Lite 2... | Answered on Apr 11, 2018


try opening line blow out with compressed air then try

Jandy Lite 2... | Answered on Dec 31, 2017


check safety circuit and pressure switch

Jandy Lite 2... | Answered on Nov 03, 2017


when firing see if voltage to gas valve brown wire should be 24 volts ac if voltage bad valve if no voltage check safety circuit

Jandy Lite 2... | Answered on May 25, 2016


check to see if voltage to gas valve if no replace or check wires

Jandy Lite 2... | Answered on Apr 29, 2016


check gas flow, check for cobwebs in gas orfices also check if 24 volts ac to the brown gas lead if not check safety circuit if so bad gas valve

Jandy Lite 2... | Answered on Apr 29, 2016


check safety circuit

Jandy Lite 2... | Answered on Apr 29, 2016


if blowing fuses replace ignitor its shorted

Jandy Lite 2... | Answered on Apr 29, 2016


check ignitor

Jandy Lite 2... | Answered on Apr 29, 2016


check flame sensor

Jandy Lite 2... | Answered on Apr 29, 2016


check safety circuit

Jandy Lite 2... | Answered on Apr 25, 2016


on the sides 9/16 plugs

Jandy Lite 2... | Answered on Apr 25, 2016


check water pressure switch and copper tube could be clogged or pressure switch not opening all the way also check wires to pressure switch could be loose

Jandy Lite 2... | Answered on Mar 05, 2016


check to see if water temp sensor shorted remove to black wires from control board if it quits bad temp sensor if it doesnt bad display board need new display board

Jandy Lite 2... | Answered on Mar 05, 2016


check ignitor and pressure switch

Jandy Lite 2... | Answered on Mar 05, 2016


if no water is going through heater open return valve if you have a bypass only open half way see if that works or I need more info

Jandy Lite 2... | Answered on Mar 05, 2016

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