Circuit Board Box

[nc_camper]

When we are plugged into a 110 outlet at home the fan runs all the time in the circuit board box. We have a 2000 GulfSteam Innsbruck. Is this fan suppose to run ALL the time?

[DAF]

This box is the 120V distribution panel plus the AC to DC converter/charger. The fan is supposed to keep the unit at normal operating temperature. Most of the heat will be generated by the converter/charger unit but in heavy 120V load and/or low voltage conditions the AC breakers will also generate heat. How are you connected to the home 120V? Are you using your air conditioner? Have you measured the AC voltage inside the trailer? It is not normal for the fan to run 100% of the time, it should cycle on/off periodically. This could be due to A) reduced cooling performance caused by excess dust/debris in the cooling fins; B) Abnormal heat generated by excessive load/low voltage. C) Bad temperature sensor in unit.