The step control module has internal load sensors that will stop operation of the motor to prevent burn-out , in case of binding or jamming into objects or the ground. Try lubing the hinges in the mechanism. Use caution as it may start moving if the lube gets things loose. Control module is underneath the coach and should have the step makers name on it, so you can get a troubleshooting manual.
What brand of fridge?
Dometic uses a swirl baffle in the chimney to direct the heat from the flame against the chimney walls for best operation, is this baffle rusts out , pieces drop on the burner causing poor flame and LP system operation.
99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.