Carrier furnace with 4 LED control board
3 amp fuse opens after burner and circulation fan has been on for awhile 26Vac pulls down to 8 volts ac
Replaced with 5 amp fuse and it does not open and furnace operation seams normal.
Valve control is a White Rodgers 36E
What should the resistance of the coils be.
I am thinking coil resistance lowers when coils warm up.