Suburban Furnace SF24 fixed - FYI
So I bought a used TravelMaster Class C 1988 (which became Coachman) with 30,000 miles. Trying to get everything working. Cold weather is here and the furnace wasn't working right. I got it worki...
Forum Discussion
Not sure which Suburban Furnace model you have...didn't make an SF24
NT24 or SF25 but not an SF24
Regardless.......
12.5V DC from battery is more than adequate. (that is almost a fully charged battery 90%)
Factory specs:
DC Voltage
12V DC standard
10.5V DC Minimum and 13.5VDC Maximum (higher then 13.5V DC and damage can occur to circuit board)
Gas Pressure
11" WC Minimum and 14" WC Maximum
IF it only functions when engine is running and alternator is charging then you still have a problem
Your furnace is designed to properly function off battery voltage.
If it now works off battery voltage then it just needed cleaning of contacts, connections etc.
Doesn't take much 'resistance' to stop DC ---a little corrosion here/there, a loose connection, poor contact and the need for higher DC voltage
But 12.5V DC is MORE then adequate and capable of making that Suburban Furnace run
NT24 or SF25 but not an SF24
Regardless.......
12.5V DC from battery is more than adequate. (that is almost a fully charged battery 90%)
Factory specs:
DC Voltage
12V DC standard
10.5V DC Minimum and 13.5VDC Maximum (higher then 13.5V DC and damage can occur to circuit board)
Gas Pressure
11" WC Minimum and 14" WC Maximum
IF it only functions when engine is running and alternator is charging then you still have a problem
Your furnace is designed to properly function off battery voltage.
If it now works off battery voltage then it just needed cleaning of contacts, connections etc.
Doesn't take much 'resistance' to stop DC ---a little corrosion here/there, a loose connection, poor contact and the need for higher DC voltage
But 12.5V DC is MORE then adequate and capable of making that Suburban Furnace run
