YP9C - Flashing Code 7

York Gas Furnace: YP9C / PC9

Re: Flashing Code 7

Code 7 = Failure to Sense Flame (3 attempts)

► If flame cannot be established in three tries, the control will lockout for one hour and then automatically try again to light.


Qty Possible Causes:
5 Dirty Flame Sensor
2 Bad Glow Plug
Clogged Burners
No or Low Gas Pressure
1 Bad Gas Valve


CHECKOUT:

1. Check Ignition Sequence


2. Check Glow Plug


3. Check Ignition


4. Check Gas Pressure / Valve


5. Check Flame Sensor




Article ID: 553
Last updated: 23 Jan, 2023
Revision: 17
Equipment -> Gas Furnaces -> York -> YP9C / PC9 -> YP9C - Flashing Code 7
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