Steven@147
T&S RV Adventures
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I was helping a fellow camper TS why his electrical system wasn't working right. There was a planned power outage going to occur from 4am to 9am. He uses a CPAP machine and wanted to make sure it would still work through the power outage.
To test his system we turned off the CG shore power. The inverter part of the Multiplus ii does not seem to work, no AC outlets or appliances in the RV would work. 12V power was ok. Everything, appliances and outlets does work fine with shore power on.
Not knowing anything about the RV or how the RV is wired, or how the Multiplus iii works or how the solar is connected in, I was up against it. The owner really doesn't know how things work either, he was told and thought everything was automatic. He just ordered the RV with the stuff and assumed it all worked fine.
The RV is a New Horizons 40 ft 5er, 100 amp power. New Horizons installed everything. It has 4 Battleborn batts, Multiplus ii, solar, shunts, and a bunch of other stuff I don't know what it is.. Two big battery type power cutoff switches up front, one labeled Inverter, the other labeled Battery. Both were on.
He has a couple different apps on his phone to look at to see how things are working, but doesn't know what they are telling him.
I looked at the main RV distribution panel in the RV, and then the inverter subpanel right underneath the main panel to kind of get an idea of what should be powered by the inverter part of the Multiplus ii. It appears 2 40 amp breakers in the main panel feeds the inverter sub panel.
The inverter sub panel has 2 30 amp breakers then feeds a host of other breakers going to various stuff in the RV. At least thats what it appears like. Minimal labeling and no manuals on how it wired,
When shore power is restored to the RV, the power is checked, then the Multiplus ii cycles, the inverter light on the Multiplus blinks and goes off. The only lights "ON" on the Multiplus ii is the battery absorption charge light.
I read a little of the Multiplus ii manual and found the switch on the bottom that seems to control the units function. It has an "ON", "OFF" and "=". The switch was in the "=" position.
The manual says with the switch in the "=" position it is charge only mode. That don't sound right. So I turned off shore power, put the Multiplus ii switch in the "ON" position and nothing. The manual sort of said that is what to do. Well that didn't work.
No matter what I tried The Multiplus ii inverter did not supply AC power to the RV. It's like the inverter part is not working. I could not really help him anymore. I advised him to call Victron.
Believe me if this was my rig I would know everything there is to know about it. How it's wired, how the batteries are wired, how the distribution panels are wired and how everything was supposed to work, document everything, put blue dots on all the inverter supplied outlets, and I would test it regularly. I felt sorry for the guy, I just couldn't help him.
To test his system we turned off the CG shore power. The inverter part of the Multiplus ii does not seem to work, no AC outlets or appliances in the RV would work. 12V power was ok. Everything, appliances and outlets does work fine with shore power on.
Not knowing anything about the RV or how the RV is wired, or how the Multiplus iii works or how the solar is connected in, I was up against it. The owner really doesn't know how things work either, he was told and thought everything was automatic. He just ordered the RV with the stuff and assumed it all worked fine.
The RV is a New Horizons 40 ft 5er, 100 amp power. New Horizons installed everything. It has 4 Battleborn batts, Multiplus ii, solar, shunts, and a bunch of other stuff I don't know what it is.. Two big battery type power cutoff switches up front, one labeled Inverter, the other labeled Battery. Both were on.
He has a couple different apps on his phone to look at to see how things are working, but doesn't know what they are telling him.
I looked at the main RV distribution panel in the RV, and then the inverter subpanel right underneath the main panel to kind of get an idea of what should be powered by the inverter part of the Multiplus ii. It appears 2 40 amp breakers in the main panel feeds the inverter sub panel.
The inverter sub panel has 2 30 amp breakers then feeds a host of other breakers going to various stuff in the RV. At least thats what it appears like. Minimal labeling and no manuals on how it wired,
When shore power is restored to the RV, the power is checked, then the Multiplus ii cycles, the inverter light on the Multiplus blinks and goes off. The only lights "ON" on the Multiplus ii is the battery absorption charge light.
I read a little of the Multiplus ii manual and found the switch on the bottom that seems to control the units function. It has an "ON", "OFF" and "=". The switch was in the "=" position.
The manual says with the switch in the "=" position it is charge only mode. That don't sound right. So I turned off shore power, put the Multiplus ii switch in the "ON" position and nothing. The manual sort of said that is what to do. Well that didn't work.
No matter what I tried The Multiplus ii inverter did not supply AC power to the RV. It's like the inverter part is not working. I could not really help him anymore. I advised him to call Victron.
Believe me if this was my rig I would know everything there is to know about it. How it's wired, how the batteries are wired, how the distribution panels are wired and how everything was supposed to work, document everything, put blue dots on all the inverter supplied outlets, and I would test it regularly. I felt sorry for the guy, I just couldn't help him.
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