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I have had similar problems with these units before. Look for corroded common/ground terminals and clean them, as well as clean the terminals on the flame rollout switch it always helps. Another...

Can I get a copy of that please?

Check unit manual if available, if not talk to carrier. I believe those sensors have a variable resistance depending on temperature. OHM out the sensor and compare to charts in manual (or what...

I am talking 5 ton package RTU. Filters are 2 15x20x2 and 1 14x25x2. Installation is fine, I believe it is just a problem with these particular York units that the heat exchangers have a tendency...

Finding lots of cracked York exchanges this year as usual. I have found one screw on the bottom section of the heat exchanger behind the burner controls section a huge pan in the a** to remove. Am I...

Can you send me a copy of that diagram too please. We service DOZENS of these units at one of our clients. When something goes wrong I tend to go to the next unit over (working) and use it as a...