[2BirdDogs]

When I am using Aquahot on electric only and the heating element is “on” (I can tell due to L1 and L2 being over 30 amps each) my bathroom heater fans pulsate and there is a relay in the electrical controls bay (above and between my Outback inverters) that clicks on and off in sync with the pulsating heater fans. Any ideas on what may be causing this? I thought it may be to allow the electric element to get the AquaHot up to temp before allowing full force through fans but not sure. It does not do this when I am running diesel burner only. 

I will attempt to attach photos of the relay. 

Appreciate any insights. 

Paul