The device that inputs 120 volts AC and outputs 12 volts DC is universally referred to as a "Converter" in RV lingo. Don't forget to check for loose 12 volt DC connections at the converter/charger.īTW, we need to all speak the same language to make sure we are communicating effectively. It sounds like you are on the way to isolating the problem. If the problem last more than a few hours, I would recommend that take your batteries in to be load tested. You should also check your battery connections to make sure they are clean and tight. If you see anything more than 15 volts, you probably have a more serious problem. I'd check the voltage with a meter as the lights go up and down. Since this is your first trip of the year, your batteries might be low on charge, or may have developed a bad cell over the winter. These converters also have a cooling fan on them, that will speed up as the heat increases because of load. This is often seen as brightening and dimming of your 12-volt lights. They will switch their mode between 13.2 and 14.4 volts to properly charge and condition your batteries. These converters are the to power your 12 vdc systems and maintain your coach batteries. Not sure what converter you have in your coach, but I am familiar with the Progressive Dynamics 9200 Series. I assume you are talking about a converter, not an inverter. I am sure I will be in touch and I appreciate the help. So I will look at it when I get a chance.
#SINGLE AND DOUBLE 12 VOLT RV LIGHTS FULL#
The basement is still completely full of stuff from the trip and it is now raining. I can hear the fan running under the step leading up into the bedroom. I have never looked at the inverter before and I think it is behind a panel in the basement. The buzzing almost sounded like a arcing sound so I shut the main 120v power switch off until I can check it out. I waited for over an hour and I never got the rapid fluctuation and buzzing sound from the inveter while I had the meter hooked up. If the inverter had not kicked back on, seems the like battery voltage would have continued to drop and at that rate, would probably be dead in a hour or so. When the inverter turns off, I can watch the voltage drop rapidly down to about 12.25v and slowly down to about 12.1v within a two minute period (lights dim) before the converter kicks back on. When the inverter kicks on, the voltage spikes to 14v and immediately drops and holds at 13.3v (the lights brighten).
So I hooked up my meter to the 12v post in the fuze box and watched the voltage with when the inverter was off and waiting to see what happened. While I was out in the camper, before I had a chance to hook my meter up, the lights flickered rapidly and I could hear a weird buzzing sound coming from the inverter area. So I will follow your instruction when I get back out to work on it. I just got back in the house and saw your post. As soon as I can, I am going to sit in the camper for a while to see if it does while hook to shore power at the house. I figured since the 12v lights were having the issue, it may be the inverter. No one else around us was having an issue. We have used this spot many times over the past couple of years and never had an issue before. I switched to the other 30amp outlet in the box, but the fluctuations continued. At first I was afraid that the shore power at the campground was fluctuating. It even sounded like the heater blower was slowing down and speeding up with the dimming of the lights. Then it may be an hour or two before the lights would flicker once again. Maybe 20 or 30 minutes later, it would do again. Shortly after setting up at the campground, and hooking up to 30 amp service, the ceiling lights started to dim and brighten rapidly for a few second and then would stop. We took our 2010 Sundance 5er out for the first trip of the year.
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