20 Most Recent Jandy Lite2 LJ125 Ceramic Gas Heater Questions & Answers

check too see if you are getting signal back too control brd if you are replace the control brd

Turn off the power and carefully install a jumper wire
around the switch, in other words take the switch out
of the circuit. If you dont feel comfortable doing this
have a certified electrician help out.

I have the same problem, removed the heat exchanger and found a small rubber gastket that was ripped. The gaskets can be found at parts store. Set of 18 about $20.00.can.

If the pilot is on the thermo couple is ok. Could possibly be a faulty temperature limiting switch, it may be stuck and just needs a spray of WD40 or similar product. Then again I could be completely wrong.

From what I just read online your heater uses a hot surface igniter to light the pilot. Turn the heater off. Give it a couple minutes, maybe 10. Then turn it back on. It probably goes through a purge cycle first then tries to light the pilot. You should be able to see the hot surface igniter glowing red somewhere close to the pilot. If not the igniter may be bad. Let me know what you see.

Hi,
Somewhere on the panel or inside there shpuld be instructions telling what 4 flashs represent...
Could be a high limit that needs reset, a rollout switch the needs reset, or a pressure switch if you have a vent blower on that unit...

heatman101

I think the drain is restricted and not allowing the water to drain fast enough. As the inducer collects water it is normal for the vacuum to increase. Is there a vent on the condensate drain to break the vacuum? If not, add one by cutting in a tee on the drain line as it exits the furnace and put a 4or5" stand pipe above the tee. Is the unit displaying any blinking lights by viewing thru a small window? If so, remove the lower panel and look on the wiring diagram for an error code to give you a starting point where to look. If you are getting a 3 blink error code, what I mentioned above may help. There should be no water leaking into the furnace, you need to figure where the water is coming from and need to stop it.

sounds like a plugged pilot - pull it out and clean it, should fire right up

disconect the 2 wires and the small threaded end. Once you have it it hand blow very hard on the threaded end, you should here a clicking sound. If that does not work and you have a ohm meter set it to contnuity it looks like a horse shoe attach wire from meter to each connection then blow real hard on threaded end. The ohm meter should change if its working properly.

Is the burner actually on? If so, the flame sensor is not working or out of flame. If you need further help, I’m available over the phone at https://www.6ya.com/expert/craig_3fa289bf857b1a3c

The thermocouple must be in the flame of the pilot and producing a signal to the gas valve. Also check thermostat If you need further help, I’m available over the phone at https://www.6ya.com/expert/craig_3fa289bf857b1a3c

you may have a lose conection or may be dirty check your conections look for burns or frays in the wireing

turn the gas valve to on

The "Fusible Link" in the electrical circuit/loop did as adverstised and failed, thereby cutting off the heater. I found the trouble shooting steps on the Jandy website, and followed them to solve the issue.