I have the Coleman digital and the heat fan will not work with the fan ON switch only. I tried it with the switch set to heat and the thermostat setting low enough that the heat would not come on. Switched the fan switch to ON and nothing happened.
2006 GMC 2500HD CCSB 4x4 Duramax/Allison, Titan 52 gallon fuel tank, Prodigy Controller, B&W Companion Hitch
2010 Jayco Designer 35RLTS, Cummins/Onan RV QG 5500 EVAP, Progressive Industries EMS-PT50C, TST Systems 507 TPMS, RV Flex Armor Roof