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Question About York Furnace None
No Heat...

funance runs, flames turns on but turn off after several minutes, but blower continues to run. four flashing lights indicating open limit. replace open limit switch still same problem

Asked by curtis on 04/07/2009 1  Answer

ManualsOnline posted an answer 15 years, 6 months ago

The ManualsOnline team has found the manual for this product! We hope it helps solve your problem. Get the Manual Here

steven posted an answer 15 years, 6 months ago

0 I had a similar problem and imagine it's the same solution. There is a sensor that is attached to the back of your hardware section (where the gas jets and flame sensor etc. are) that monitors the heat in the motor/ducting area. I can't remember the name of the sensor but it's screwed in to the back of that section. If it senses that it is to hot in the motor/ducting area it will make the furnace blower operate constantly. I did something that I'm not probably supposed to do...but I took the wires going to and from the sensor and jumpered the sensor out. I did this after replacing the sensor with a new one and no change. What ended up causing this condition was having an air conditioner put in and a filter type of material on the inside of the A coil. I had to get into the A coil and vacuum all that crap off of there and made sure I had a good quality filter in place for the furnace. Anyway...either that sensor or dirt buildup is most likely causing your problem. Change the filter for your furnace and/or make sure to clean out the motor area behind the electronics/hardware section
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