regulator freeze up can be a problem if its real cold out.. also low gas level in LP tanks in real cold weather can effect thing. the pressure can become to low to fire the heater which is a higher BTU than a cook top burner.
If the regulator is older it might be good to replace with new style two stage units as they help with the moisture issue. On most gas valves there are two screws used to check pressure to valve,, input and output.. I find it easy enough to open the one closest to gas coming in to purge air.. I just let blow till i smell gas real good and then shut off, fan the area to exhaust the gas from the area and start the lighting procedures.
We run into the purging issue in both nat and LP gas logs we service during the fall and first part of winter.
Huntindog wrote:
Bisker wrote:
The "blowing cold air for hours" is concerning, I had an issue with my furnace not lighting, but after three attempts it would shut off. Your unit should have a similar feature, which if it continued to run would lead me to believe it thought it had ignited.
Not all furnaces have this feature. In fact I think it is a fairly new feature. My 2001 would do as he says. I had a regulator freeze up on it, starving the heater for gas. while we were asleep. The fan ran until the baterries were so low that the alarms started acting up.
My 2010 TT has the 3 attempt start feature.
