CMF 80 PG loud noise ... normal?
Posted: Thu Sep 09, 2010 10:22 am
I'm a real newbie and don't want to mess around with a gas furnace without some advice.
We have a 1984 skyline with a CMF 80 PG furnace. It's our first year living here and I have no experience.
Today it started getting colder. I opened up the furnace closet. The instructions in the closet said something about lighting a pilot. I found an online manual at
http://www.nordyne.com/Literature/708062b.pdf
This says the pilot lights automatically. But our unit's main gas valve has a "pilot" setting in addition to "on" and "off," which is confusing.
Following the instructions in the manual, I turned on the main gas valve leading into the closet and turned the gas valve on the furnace to on, following the safety procedures in the manual. I then turned the thermostat on and set the temp above ambient air temp.
After about 20 seconds, the furnace starting making a loud motor sound. It didn't sound normal, but I don't know what "normal" is. I let it go for about 30 seconds, but could sense no heat from the outside of the closet and the blower did not come on. Not knowing what I am doing, I thought it safest to shot the whole thing off, so I turned off the thermostat, opened up the closet, and shot off all the gas valves.
During the summer when I was not here, the blower came on by itself, which freaked my wife out a bit. But I remember hearing this was a normal self-maintenance feature of the device.
Any help would be hugely appreciated. Basically, I have no idea what I am doing.
We have a 1984 skyline with a CMF 80 PG furnace. It's our first year living here and I have no experience.
Today it started getting colder. I opened up the furnace closet. The instructions in the closet said something about lighting a pilot. I found an online manual at
http://www.nordyne.com/Literature/708062b.pdf
This says the pilot lights automatically. But our unit's main gas valve has a "pilot" setting in addition to "on" and "off," which is confusing.
Following the instructions in the manual, I turned on the main gas valve leading into the closet and turned the gas valve on the furnace to on, following the safety procedures in the manual. I then turned the thermostat on and set the temp above ambient air temp.
After about 20 seconds, the furnace starting making a loud motor sound. It didn't sound normal, but I don't know what "normal" is. I let it go for about 30 seconds, but could sense no heat from the outside of the closet and the blower did not come on. Not knowing what I am doing, I thought it safest to shot the whole thing off, so I turned off the thermostat, opened up the closet, and shot off all the gas valves.
During the summer when I was not here, the blower came on by itself, which freaked my wife out a bit. But I remember hearing this was a normal self-maintenance feature of the device.
Any help would be hugely appreciated. Basically, I have no idea what I am doing.