[propanemike]

I have a 15 year old York Stella-Plus gas (propane) furnace. The system operates a few minutes and then immediately shuts off. The propane dealer (who originally installed the furnace) has been out 6 times this last heating system. They have replaced the flame sensor, flame ignitor, burners, 3 vacuum switches. I replaced the computer and all plastic vacuum tubing. The system continues to shut off after a few minutes of operation. In the beginning the furnace would operate 2-3 months, then 2-3 weeks, now maybe a day. The vents are all clear. The moisture pump works fine. The thermostat does call for heat when turned up. I've spent $500 and the propane dealer now wants to replace the valve and pilot adjusting assembly. Any advice would be helpful. Please don't tell me to find a new dealer, although that's what I probably should do. I just have so much time and money into this one... Thanks

[Joshdta]

If it is propane then it is time to get the secondery heat exchanger flushed and the primary inspected. Propane furnaces very rarly last longer the 15 yrs.

[propanemike]

Thanks Joshdta:
Actually the northeast area technical representative for York is coming to my house Wednesday (June 9th) morning to review the problem. I hope they find a fix. I'll ask about the secondary heat exchanger being flushed and to inspect the primary.
I'll keep you posted... Mike

[propanemike]

Latest Update: The area local York guru visited me. He removed the main gas feeder pipe that goes to the burners. Poured out a lot of rust. He then wire brushed the many air holes on the feeder pipe. Re-installed the main gas feeder pipe and adjusted each of the 6-7 burner vents. The furnace operated much better, better flame, sounded better. It's June now and I'll update you if I run into issues this coming winter... Mike