Model: P3CCD12N07601A
The High temperature limit controls how much heat your furnace will deliver. The higher the temperature the hotter the air it delivers. At the same time, the higher the temperature, the hotter the exhaust that is wasted energy. The amount of heat you need relates to outside temperature. Some more sophisticated controls would adjust the high limit to change with outside temperature However, with a fixed limit, the lower the limit the more efficient your operation. If you are looking for maximum efficiency, then you should lower the limit to the point where the fan runs continuously on a cold day. If the fan shuts down, it means that you are making more heat in the furnace than you need. You might want to change the high limit
to be higher in the colder part of the winter when you need maximum heat, and then lower it when the outside temperature worms up.
If you are getting adequate heat at 150 Deg. you should not go higher, because the higher the limit, the lower the efficiency and the greater the stress on the furnace.
SOURCE: I HAVE A YORK STELLAR PLUS,MODEL PEUDD12N09501C 15
This flame is not likely going off on a high limit due to clogged filters as suggested previously because the unit goes off on safety before the blower comes on. If it works sometimes and not others it is most likely a flame sense issue or an electronic problem. If the boards logic tells the inducer to keep running if it thinks the flame is lost this may be your clue. You can attempt to find the red LED trouble light on the circuit board(or in burner compartment) and this may tell you exactly what the problem is but you may need to tape the door interlock switch so you don't loose the code when you open the blower compartment. You can clean flame sensor with very fine sandpaper or steel wool but replacement is usually the best.
SOURCE: My York Stellar PLUS furnace (Model
Check gas pressure, inspect manifold & make sure there is not a blockage.Make sure gas is present and main gas shut off valve to furnace is on also check the knob on the 24 volt gas valve and see if it is in the on position , check the MV terminal on the gas valve to 24 volt common with a volt tester to see if you have 24 volts present, if you do have 24 volts at gas valve, replace valve. if you do not have 24 volts at gas valve check high limit control & roll out limits for a open circuit, Good luck.
SOURCE: Furnace will not ignite
It is possibly the igniter. Check continuity on the igniter to make sure that it is not open.
SOURCE: Main blower fan is not starting on my York Diamond
Hi,
Check to see if the blower motor is actually getting power to it...You will have to check for power on the heating speed terminal... and the neutral wires....you should have 120v across those two wires....
If you have power then the motor is bad...if no power then the heating relay went bad on the circuit board and you will have to replace the circuit board...
That is a common problem as those relays are often to light and wear out...
Just realize that without an electrical meter to trace things through you are really just grabbing at possibilities and not really able to correctly diagnose your problem...
heatman101
SOURCE: blower fan running constant after new fan and
Here's my best shot.
Check the temperature settings for the fan switch.
The low OFF setting should be about 100 degrees.
The ON setting should be around 150 degrees and this is the setting that "makes" the ON contacts.
The HIGH LIMIT setting should be about 180 degrees.
If these are set, can you use a meter to see if the FAN ON contacts are closed?
Lastly, it appears that one hot line should go to one side of the blower and the other hot line should go to the bottom FAN terminal with the other side of the blower being fed by wiring from the top FAN terminal.
Good Luck. Gary
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