Quote:
Originally Posted by mmbrevo
This is an Atwood series AFS/AFM/AFL
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That is Three different models which have several versions within each model
AF...Atwood Furnace
S, M, L is small, medium, large.....referencing BTU ratings
AFS could be 12K, 16K or 20K
AFM could be 16K, 20K, 25K, 30K, 35K
AFL could be 35K, 40K
ALL are wired basically the same
12VDC from FUSED source (DC Dist/Fuse Panel) goes to an ON/Off --Circuit Breaker Switch (Located at furnace) then to the thermostat/from thermostat to circuit board etc
FAN must have DC and MUST Run before ANYTHING else can happen
Check for Blown Fuse in your RV DC Fuse panel
Then remove exterior furnace access panel and check for DC to/thru the On/Off --CB Switch on the furnace
(Should be a RED wire)
*IF fuse is Good the should be 12VDC ON red wire to switch.
Switch should be ON ---CB is manual Reset
**DC to switch also connects to BLUE wire going to Thermostat so that wire should have DC all the time also
(When t-stat closes the 2 blue wires connect and DC is sent back to furnace)
Here is manual for a AFM Series......wiring diagram on page 8
http://techsupport.pdxrvwholesale.co...m-Furnaces.pdf