My WFCO converter also clicks on & off, every 20-30 seconds; a loud "click" and the converter fan goes on; another "click" and the fan goes off. This happens when my trailer is connected to 120v AC. Turn off the DC switch, and the clicking stops.
Batteries are quite low. Something I did wrong, I presume. I left the campsite at end of our new Escape's maiden voyage. But I forgot to turn off the hot water heater (I did turn off propane) and I intentionally left the fridge
on, DC powered, figuring my truck's alternator would charge it while driving.
Forgetting that I left it on, we stopped for lunch, etc. for an hour. When I remembered, I checked the battery, it was on "L" (low?). Turned off hot water heater and DC entirely, drove 2 hrs, battery charge went up to "F", not great but better? Turned DC/Fridge back on and drove another 25 min. home, got there & it was back on "L".
Used a home trickle-charger on the dual 6v deep cycle batteries, didn't help. Hooked up to AC power and turned on the DC switch to charger the batteries, which is when the "clicking" and fan noise started, alternating on & off. I turn off DC switch and the clicking stops, AC power works fine but I cannot get those batteries charged.
I know I forgot the hot water heater switch, but what about the fridge
? Must I turn off DC entirely when I drive? Can anyone provide some information here?