I have a 5 ton Carrier 58MVP furnace system that is 5+ years old. We purchased the house two years ago and the furnace has continued to give us problems. The house is a 2700 s.f. two story about 8 years old. We have spent over $2,000 with two different service people trying to fix the system. The propblem is that the system takes 4 hours to warm the downstairs from 66 degrees to 69 degrees while it is 40-45 degrees outside. The problem is that the furnace doesn't stay on long enough to warm the house.
The furnace cycles on and off at a rate of 6-7 minutes from start up to start up.
The cycle is :
intitial flame up and warm up
after 2 min. fan turns on
after 1-2 minutes the burner shuts off
after 1 more min. or so the fan shuts off. Fan total run time = 2-3 min.
system silent for one 0-1minute then intial flame up starts again.
Does anybody have any suggestions; this is getting very expensive!
The furnace cycles on and off at a rate of 6-7 minutes from start up to start up.
The cycle is :
intitial flame up and warm up
after 2 min. fan turns on
after 1-2 minutes the burner shuts off
after 1 more min. or so the fan shuts off. Fan total run time = 2-3 min.
system silent for one 0-1minute then intial flame up starts again.
Does anybody have any suggestions; this is getting very expensive!