Lights/Vent changed to Fantastic Vents ‘72 Ambassador

[Wanderlust72]

Hello everyone. My wife and I have owned Wanderlust (1972 29’ Ambassador Centre Bath) for about five years and have enjoyed every minute of it while appreciating the challenge of living in something as old as I am. In order to increase the airflow, as we do not use the air conditioner, we decided to replace the lighting/vent unit in the back bedroom and front area with Fantastic Vents.

We did the one in the back bedroom first and overall have been pleased with it. There have been times when the trailer is quite hot and it won’t kick in for some reason, and later on in the day would power up with no issue. I am not sure what causes this and would like any input as to how to ensure it works when desired. I have thoughts that it might be due to the thermostat within the Fantastic Vent unit, but am not sure.

The vent in the front area has given us some issues. When initially installed everything worked fine, but after left for a few hours it will not power on, and we also lose power to central control. I have checked the fuses and they all seem to be working fine. After disconnecting the fan, the power restored itself and was working again for a short time until the same issue occurs with the loss of power to the vent and the control center.

I have the fan connected using the blue and white wires that were used to give power to the vent/lights that I replaced with the Fantastic Vent. Does anybody have any input as to why this might be occurring and how I can ensure that power maintains? Which fuse is responsible for the front light/control center?