RPJ 2 Furnace

12-23-2006, 10:02 AM	#1
averyds Newbie   Join Date: Dec 2006 Location: Blue Rapids Ks Posts: 7	RPJ 2 Furnace I have a 10 year old RPJ 2 furnace that will not heat unless I recycle the thermostat on and off each time I want heat. I just replace the thermostat yesterday and it still won't work right. When it works it won't run long enought to get to the temperature I set on the thermostat.

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12-23-2006, 11:41 AM	#2
acefurnacefixer Member   Join Date: Nov 2006 Location: NW Ohio Posts: 108	RPJ 2 Furnace It appears that the unit is going into lockout, and of course the most common reason for that is a dirty flame sensor. Remove the sensor and sand it with emry cloth or 200 grit sand paper (make it look like a clean metal rod again). RE- post if this doesent cure the problem.

12-23-2006, 07:30 PM	#3
averyds Newbie   Join Date: Dec 2006 Location: Blue Rapids Ks Posts: 7	RPJ 2 Furnace I have a igniter,no pilot light?

12-23-2006, 09:03 PM	#4
acefurnacefixer Member   Join Date: Nov 2006 Location: NW Ohio Posts: 108	RPJ 2 Furnace check for 24 VAC present at gas control valve.

12-24-2006, 01:13 AM	#5
HvacWiz Member     Join Date: Nov 2006 Location: Northwest Ohio Posts: 286	RPJ 2 Furnace If you have a ignitor then your furnace also has a flame sensor, if this is a 90% furnace i would also check for a pluged condensate trap

12-24-2006, 08:27 AM	#6
acefurnacefixer Member   Join Date: Nov 2006 Location: NW Ohio Posts: 108	RPJ 2 Furnace Quote: Originally Posted by HvacWiz If you have a ignitor then your furnace also has a flame sensor, if this is a 90% furnace i would also check for a pluged condensate trap Very good point..this also will cause sparatic cycling