2006 Coachman Coach Batteries wont hold a charge. After motor runs it builds back up but slowly goes down.

Which Battery?

There is a relay that operates when you hook up to shore power that switches from battery power to converter power. It also charges the batteries. If you do not have battery power then suspect a faulty relay. It is located inside the power converter.

Contact your local service center directly or online here

Assuming we are talking abouot the same switch: It disconnects the auxiliary battery(s) for storage. Nothing that runs on 12v should work. Best for temporary storage. Batteries should still be removed for long term dead storage.

13.8 volts need to be applied to the batteries to charge them. The loose button you refer to is the circuit breaker for the inverter. when it trips it pops out and is not loose any more.

connect your disconnect

If the unit has a transfer switch that switched between generator and shore power you need to look at that since nothing is working with the unit plugged into shore power. There may also bee a few battery disconnect switches close to the batteries. In that system there should also be a few inline circuit breakers. If they have tripped they will need to be reset. To determine if they have tripped you will need to look at the circuit breaker and see if there is a small black lever hanging down. If there is, slide it back up and it will lock back into place and should restore power. Without actually seeing the coach and the power configuration it is difficult to determine exactly the problem. Hope this helps.

Hi Thomas,

Why yes. I am offering you the direct site for IRV2. There you will find direct assistance for troubleshooting by phone in real time.

2014 Thor Challenger 37KT Owners iRV2 Forums


Here is the another. Not the same as above.


2014 Thor Challenger 37KT Owner Thor Forums



My assessment will be the automated transfer switch is not working. If the battery pack is below specified charged levels. The system has a protection circuit not to allow the transfer from the grid to isolation switch. When the charge is achieved to satisfactory levels. Then it will function.

It is possible you may have a shorted cell in one of the batteries preventing the charge to be successful. I would observe the water levels in each battery and every cell. When full there is a mirror like image in each cell designed to indicate the level. A run down battery will have very low levels at either end of it. The hydrometer is the best way to see specific gravity. When found then isolated you can remove from the series.

A blown fuse or tripped breaker protects the downstream equipment and the power control board.

There should be a shop manual somewhere in the RV. Customer service is available at the links offered. Fare. well.

Sometimes if you do not have fully charged batteries or enough power they wont, start the vehicle if its a motorized unit. Then switch it over by hitting the button allow the batteries to charge, as if you use the invertor power alot while the vehicle is not running it drains the batteries the engine will charge the batteries as well as the electrical time you have it plugged n.