I searched the forums and could not find this issue anywhere...
I have a two year old Jandy LT heater using Propane. When this unit was new I had a problem with the heater but don't recall the issue as they fixed it right away under warranty. Today I tried to use the heater after not using it for a few months and it's not working properly.
Here's what it does:
- Turn on Heater
- High fan comes on for a few seconds, then[/*:m:2nw772c6]
- Low fan for a few seconds, then normal ignition.[/*:m:2nw772c6]
- A few seconds after ignition, the high fan comes back on.[/*:m:2nw772c6]
- In less than a minute the fire goes out and the cycle happens again.[/*:m:2nw772c6]
After two cycles the "Service" and "Air Flow" lights come on.
So it seems that I have an air flow issue. I take off the case and inspect the exhaust and intake areas and both are completely clear, I checked the hose that connects to the vacuum switch, when the fan is running there is suction but I couldn't tell if it's an appropriate amount, but when I disconnect the leads on the vacuum switch and connect a VOM it looks to be activiating with the available suction when the fan is running. So it would seem that there is enough vacuum to activate the switch.
Any Idea why else the "Air Flow" service circuit would be activated? or any idea what other tests I could try?
My next step is to call a pool place to look at it, but I like to do repairs when I can and figured I't troubleshoot for any easy stuff on my own.