Hello,
I have a 2000 Jayco Eagle TT that I have at a campground on the lake nearby. The last couple of months, I've run into some electrical oddities that I'll try to describe as simply as possible, hoping someone has some suggestions/ideas on what could be causing them. They appear to happen at random and most aren't reproducible, they just seem to happen sporadically but increasingly are inevitable. It's been over a month since we've gone down and not dealt with at least one of these problems. I don't know what sort of connection there is between these problems, if any.
1. Even when the Norcold fridge is set to "AU AC" (meaning automatically running on AC power), when I turn on the bathroom light or the light just outside the bathroom, I will get a the "DC lo" fault code on the fridge. This doesn't always happen, but once I'm in the camper for a night, the next day this will happen 100% of the time. That fault code won't appear with any other light in the RV, just the two that appear to be closest to the fridge.
2. Another problem we run into: every now and then, flipping a light switch will kill the rooftop air conditioner if its running. After 15-20 minutes, flipping another light switch will turn the A/C back on. The breaker doesn't trip at any point.
3. This has only happened once, but there was an instance where, just before we were going to sleep, I turned off the bedroom overhead light. This was the only light on in the trailer. This killed the A/C and the power. I can't remember now if the microwave and fridge went off, but no lights or air would turn on. After maybe 30 minutes, the lights and air conditioner came back on by themselves. The breaker didn't trip at any point.
4. There was an instance where during a shower (running hot water), the lights and air conditioner turned off by themselves. I can't remember if the breaker tripped here as she had to come fetch me off the water to take a look, but everything came back on after turning the main breaker on and off again.
No one in the campground seems to have much idea why these things would be happening, and while I know of converter/inverter, battery, breaker and fuses, I'm not electrically skilled in a way where I can really think about the connection between the lights/air/appliances to the extent where I can mentally or physically troubleshoot. I had a couple of electricians who have campers out there look at the breaker and battery, and they said there was nothing out of the ordinary there. I have read that the old lightbulbs can be electrically "noisy" which may explain the odd connection between the a random light switch, air and fridge, but that's all i've really been able to find. Any ideas are helpful!