I agree with the lack of power. If the fan is using too much power it will drop the voltage even if the battery is at rated voltage. Plugging the camper in will raze the voltage a couple of volts and over come a weak fan. The fan has to run at full speed to trip the sail switch. With out full air flow the sail switch will not allow the gas valve to open. If it is an original igniter board you only get one chance to get the fire lit so every thing has to be just right. One thing that all ways bothered me is why didn’t they have a timer to shut the fan off after awhile if the heater didn’t light? That blowing cold air thing sucks!
Furnace help
in Engines - Transmissions - Drive Train - Suspension - Chassis - Steering - Exhaust - Tires - Etc.
Posted
I agree with the lack of power. If the fan is using too much power it will drop the voltage even if the battery is at rated voltage. Plugging the camper in will raze the voltage a couple of volts and over come a weak fan. The fan has to run at full speed to trip the sail switch. With out full air flow the sail switch will not allow the gas valve to open. If it is an original igniter board you only get one chance to get the fire lit so every thing has to be just right. One thing that all ways bothered me is why didn’t they have a timer to shut the fan off after awhile if the heater didn’t light? That blowing cold air thing sucks!