I have 4 yrs in the trade and I've got a stumper.

York model#p-hed12n04001a serial# eeapo11342
horizontal gas furnace

It has an intermittent pilot problem and locks itself out. The pilot light flame flickers the majority of the time like your trying to blow it out and then will suddenly stand normal and all systems are go!(main lights).

I have checked the following :
orifice is clear
sensor probe has been lightly sanded
24v at pv to comm
ignitor sparks at all times during trial
7 in w.c. to pilot tube
no obstructions in flue piping
draft motor is working correctly and in the right direction

I have installed new gas valve sensor wire and ignition module and I am getting the same results please help me with this nightmare! thanks

[Edited by svc on 04-05-2005 at 09:58 PM]