Jandy LRZ pool heater not working

heals1979

New member
Aug 10, 2019
2
Ontario, Canada
Hi, I have a 4 year old jandy lrz heater that's been acting up. The heater had started to turn the cover around the exhaust black and at the same time said fuse link fault. I opened the exhaust vacuumed it out and then used compressed air just to be safe. After that I replaced the fuse link but now my display is dead and I'm not sure what the issue could be. I checked the breaker, flipped it a few times but no luck. I looked inside and could see no visible issues. Any help would be greatly appreciated. Thanks
 

swamprat69

Member
Mar 30, 2019
16
Las Vegas, NV
A fusible link is an over temperature safety! The black around the exhaust is probably carbon/soot caused by incomplete burning of the gas. This may be an indication that the burners are dirty enough to cause this problem. As to the problem with not starting up now, you would need to be comfortable with using a multimeter and the wiring diagram in order to see where you are losing the circuit. Also be aware that if you are having problems with incomplete combustion, the carbon/soot may have partially or almost completely plugged up the hot gas passage through the heat exchanger and you would need to take the heater apart to clear this up and get back to normal operation. I was an HVAC tech for 40+ years before retiring. would be happy to answer any other questions you might have.
 

heals1979

New member
Aug 10, 2019
2
Ontario, Canada
Thanks for the reply. I have a voltage meter but have no idea how to use it. I was thinking of replacing parts until I find the answer as I don’t have anyone near by that works on them
 

swamprat69

Member
Mar 30, 2019
16
Las Vegas, NV
Most Heating and cooling companies will work on a pool heater. Try to get a company that has NATE certified technicians. Just be aware that if your heater is producing carbon/soot, it is also producing Carbon Monoxide and would need to be cleaned correctly to stop the problem.