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Old 06-05-2020, 04:53 PM   #1
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REV 24 RB - unknown switch

Hello
I just bought a 2016 Dynamax REV 24RB.
This is my first Camper and I am still learning the in and outs of this Coach.
One thing, what I have not figured out is the following:
There is a switch below the Steering wheel on the LH-side. Little bit hidden from all other switches.
I have not figured out yet, what the function of this switch is. First I thought, It will start the generator as a kind of last resort, if the coach Batteries are empty.
But it did not start the generator.
any idea ?
thanks for your help
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Old 06-05-2020, 05:32 PM   #2
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Quote:
Originally Posted by Mira View Post
Hello
I just bought a 2016 Dynamax REV 24RB.
This is my first Camper and I am still learning the in and outs of this Coach.
One thing, what I have not figured out is the following:
There is a switch below the Steering wheel on the LH-side. Little bit hidden from all other switches.
I have not figured out yet, what the function of this switch is. First I thought, It will start the generator as a kind of last resort, if the coach Batteries are empty.
But it did not start the generator.
any idea ?
thanks for your help
If itís a momentary switch itís probably the battery booster. It will connect the house batteryís to the truck battery to supplement which ever ones are dead.
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Old 06-05-2020, 06:16 PM   #3
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If itís a momentary switch itís probably the battery booster. It will connect the house batteryís to the truck battery to supplement which ever ones are dead.
I agree. It's an emergency battery booster switch.
If your coach battery won't start the engine, push and hold that toggle switch while you start the engine.
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Old 06-05-2020, 06:41 PM   #4
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First of all, thanks fore the quick reply.

My generator did not start, when I used the toggle switch!!
Question: does this switch only works:
a) when one of the battery is empty ( Coach or Chassis)
b) it will only start the generator only when I start the chassis
Engine and at the same time use the toggle switch ?
c) is there a description somewhere to read about the procedure,
how to use this switch?

thanks for your help
Andreas
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Old 06-05-2020, 06:59 PM   #5
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Quote:
Originally Posted by Mira View Post
First of all, thanks fore the quick reply.

My generator did not start, when I used the toggle switch!!
Question: does this switch only works:
a) when one of the battery is empty ( Coach or Chassis)
b) it will only start the generator only when I start the chassis
Engine and at the same time use the toggle switch ?
c) is there a description somewhere to read about the procedure,
how to use this switch?

thanks for your help
Andreas
If the coach wonít start hold down the switch and start the engine. When it starts let off of the switch. Let the coach run for a while then try and start the generator. That is the procedure for using that switch.
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Old 06-05-2020, 07:46 PM   #6
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thanks

I will try this tomorrow and come back with the result.

regards
Andreas
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Old 06-05-2020, 08:12 PM   #7
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Quote:
Originally Posted by Mira View Post
First of all, thanks fore the quick reply.

My generator did not start, when I used the toggle switch!!
Question: does this switch only works:
a) when one of the battery is empty ( Coach or Chassis)
b) it will only start the generator only when I start the chassis
Engine and at the same time use the toggle switch ?
c) is there a description somewhere to read about the procedure,
how to use this switch?

thanks for your help
Andreas
Bill Davis is correct as to it's operation. However....
The switch will not work if
a. The battery is 'empty'. It will start a weak battery but not a dead one.
b. That switch is not meant to start the generator.
c. No
I think we have a misunderstanding about the nature of the switch. It's meant to give a boost to the battery that won't start by using the other battery (chassis or coach)

It doesn't have anything to do with starting the generator. If your coach battery is weak, turning on the engine will charge the coach battery and that extra power can be used to start the generator when you push the generator start on the panel by the door. You can do that without using the emergency start button.
If your generator won't start after you 'prime' it by pushing the panel button for a few seconds and then pushing the generator start button again, you've got a weak battery or something is wrong with the generator itself.
Do you have a full tank of gas? The generator won't start if the gas it too low.

If both your batteries are good, that button won't do anything but connect the two batteries temporarily.
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Old 06-05-2020, 10:00 PM   #8
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Quote:
Originally Posted by Reverse_snowbird View Post
Bill Davis is correct as to it's operation. However....
The switch will not work if
a. The battery is 'empty'. It will start a weak battery but not a dead one.
b. That switch is not meant to start the generator.
c. No
I think we have a misunderstanding about the nature of the switch. It's meant to give a boost to the battery that won't start by using the other battery (chassis or coach)

It doesn't have anything to do with starting the generator. If your coach battery is weak, turning on the engine will charge the coach battery and that extra power can be used to start the generator when you push the generator start on the panel by the door. You can do that without using the emergency start button.
If your generator won't start after you 'prime' it by pushing the panel button for a few seconds and then pushing the generator start button again, you've got a weak battery or something is wrong with the generator itself.
Do you have a full tank of gas? The generator won't start if the gas it too low.

If both your batteries are good, that button won't do anything but connect the two batteries temporarily.
Thatís what I said.
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Old 06-06-2020, 12:09 AM   #9
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Thatís what I said.
I'm agreeing with you.
However, mira appears to think that that switch on the dash is necessary to start the generator and it isn't. Just starting the engine normally will help give the coach battery the extra power it may need to boost a discharged coach battery. The switch to start the generator is on a panel with other switches. In our coach, it's near the door and entry light switch and tank indicators.
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Old 06-06-2020, 05:42 AM   #10
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Quote:
Originally Posted by Reverse_snowbird View Post
I'm agreeing with you.
However, mira appears to think that that switch on the dash is necessary to start the generator and it isn't. Just starting the engine normally will help give the coach battery the extra power it may need to boost a discharged coach battery. The switch to start the generator is on a panel with other switches. In our coach, it's near the door and entry light switch and tank indicators.
I agree.
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Old 06-06-2020, 12:18 PM   #11
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Hallo
again, many thanks for all the input received in respect to the unknown Switch.

This question was actually based on the fact, that the overall function of the batteries in
the coach and their usage is still a little bit of a mystery for me.
On my first trip ( to Cap Canaveral) l had already a dead battery and the generator did not start in the morning. To start the generator, I used a small Power bank, what I had with me.(Lucky or planning?) After this incident, I decided to install a Voltmeter at the Control Panel , beside the door.( see picture ) I did some trials and the threshold of starting the generator is around 11.2Volt. I should not go below this Voltage, to be save to start the generator from the panel. I also bought a second deep cycle Battery.
In order to solve the issue with drained batteries, I will start in two month to install
Solar Panels on the roof. This should give me enough flexibility to maintain the batteries in a good condition. In addition, I will keep my little Power bank charged-
just in case.
Happy Camping
Andreas
ps: still have a problem to upload the picture - cant find the needed URL!!
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Old 06-06-2020, 12:45 PM   #12
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Solar Panels on the roof. This should give me enough flexibility to maintain the batteries in a good condition. In addition, I will keep my little Power bank charged-
There is one more thing to check. There is a fuse on the top of the coach battery that connects the batteries for charging. If that's blown, the coach battery will not charge the house battery. (Ask me how I know.)
If you're storing the coach, installing a battery disconnect switch directly on the battery or removing the negative cable from the battery itself will keep them charged for a long time.
You have to be careful disconnecting the house battery because the steps won't work if that's dead.
RAM recommends that you disconnect the battery if storing over 2 weeks. They also recommend you not use the parking brake while storing if the battery is connected.
If the chassis battery goes dead and your key is in the ignition, it's stuck.
Obviously, batteries and I have a checkered history.
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Old 06-06-2020, 06:37 PM   #13
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An$ also a fuse where we hook into the chassis connectors. That is the one I see blown most often when people try to start a dead battery. Big draw.

On my iPad so donít have the pdf of that. Maybe search for Promaster battery boost and my screen name to find where I posted it.
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Old 06-06-2020, 06:58 PM   #14
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Hallo
again ....
Happy Camping
Andreas
ps: still have a problem to upload the picture - cant find the needed URL!!
Open your Welcome PM... click on the link to Forums 101 and follow the instructions in post #7.
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Old 06-06-2020, 08:14 PM   #15
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It's here... post #9 with attachment
https://www.forestriverforums.com/fo...rt-158330.html
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Old 06-07-2020, 11:26 PM   #16
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Whew, I forgot about all that trauma. No problems since then. Although I still havenít replaced my house batteries. (Mr. procrastination).

Heads up, Brian has mentioned this before, there is a difference between the 2015 and 2016 battery connections .

Just lost electricity here, may finish this tomorrow
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