DIY Chatroom Home Improvement Forum

DIY Chatroom Home Improvement Forum (http://www.diychatroom.com/)
-   HVAC (http://www.diychatroom.com/f17/)
-   -   payne furnace prob (http://www.diychatroom.com/f17/payne-furnace-prob-94132/)

drisco 01-31-2011 07:06 PM

payne furnace prob
 
after turning on the heat the furnace combustion box overheats causing manual limit switch to go off . i have the heat set to 66 degree however it only gets to 58 degrees. the furnace exhaust gets a natural gas smell outside. the furnace gives code 33, and blower motor runs until i reset furnace it was installed 97

i replaced cleaned
cleaned intake and exhaust pipe
thermostat
air filter
replaced burned out draft inducer
last yr replaced flame sensor and flame ign.
payne furnace model #490aav036060

kenmac 01-31-2011 07:16 PM

not getting enough air flow across the HX .dirty coil. closed off vents , not enough return air

drisco 01-31-2011 07:22 PM

i cleaned the coil

drisco 01-31-2011 07:23 PM

all vents open air comes out

kenmac 01-31-2011 07:26 PM

Is this 1 of the small limits that you reset by pushing a small button. If so it's a roll out limit & you need to have the H X or vent system checked

drisco 01-31-2011 07:31 PM

yes it is one of the small ones u push in did and over heated ? could u be limit switch on fire wall

kenmac 01-31-2011 07:33 PM

Quote:

Originally Posted by drisco (Post 582028)
yes it is one of the small ones u push in did and over heated ? could u be limit switch on fire wall


Can't make out what this means. You need to have a PRO check your unit

drisco 01-31-2011 07:55 PM

. [IMG]file:///C:/DOCUME%7E1/owner/LOCALS%7E1/Temp/moz-screenshot.png[/IMG][IMG]file:///C:/DOCUME%7E1/owner/LOCALS%7E1/Temp/moz-screenshot-1.png[/IMG]one of my friends thought that the Heat exchangers, are sooted and or limit switch on fire wall behind draft inducer is at falt

HvacWiz 01-31-2011 09:17 PM

Your secondary heat exchanger is plugged up.


All times are GMT -5. The time now is 07:01 PM.