Looking for a schematic on chaparral 381dbl

[kevinpouliot]

Trying to find a schematic on chaparral 381 dbl 2024

We just bought one I noticed the 2025 now has 3 seperate thermostats I would love to add the additional two if possible and also get away from this temp sensor garage that is built into the furrion acs

 

[chuckster57]

You wont find schematics for any of Keystones products. What thermostat do you have?

 

[firestation12]

Trying to find a schematic on chaparral 381 dbl 2024

We just bought one I noticed the 2025 now has 3 seperate thermostats I would love to add the additional two if possible and also get away from this temp sensor garage that is built into the furrion acs

Chichester gave you the universal answer to a request for a schematic, but the rest of your question isn’t clear. After reading several times, are you saying you bought a new thermostat for one of the 3 a/c units and want to add 2 more? If so, what did you buy? A residential thermostat or one specific for RVs? Do you have the in-Command control system? What are you removing that is factory installed? Your present thermostats have colored wires connected to terminals identified with alphabetical letters. With a few pics of your OEM stat and what you bought and the OEM stat’s base with the cover removed showing the wires and terminals, you can get answers you seek.

 

[Peto]

I bet they don't even have schematics on the factory floor. Each one is wired about the same but dependent on who is doing the job that day and how much patients they have.

 

[NH_Bulldog]

I am a little unclear as well and agree that clarification is needed.

I have Furrion AC’s and each has a separate thermostat which function appropriately and as expected/intended.

InCommand uses remote temperature sensors throughout the coach which all feed back into the main InCommand system interface. The newer models don’t have InCommand so individual thermostats are used.

If you have InCommand, I don’t believe there is a way to eliminate the remote sensors and go with individual thermostats.

Please clarify whether you have InCommand or not, whether you have remote sensors or not, what brand AC units, etc.

 

[kevinpouliot]

You wont find schematics for any of Keystones products. What thermostat do you have?

We have the Furrion 3 zone thermostat in that came with ththe fifth wheel. The sc units have the thermocoupler built into the air box to measure the temp readings and it plain ole sucks. When the ac is on with say zone 2 the other two won’t stay running braces the cool air tells the other units it’s colder than the set points and won’t call for more ac. I have read a lot of posts about adding remote temp sensors

 

[NH_Bulldog]

Have you talked to Keystone? They offered me a free retrofit accommodation through my dealer if I wasn’t happy. However, I instead replaced my Furrion thermostat with a Micro-Air EasyTouch and adjusted the offset and it works perfect and is accurate. There is a kit you can buy.

The link is here: Temperature Sensor Relocation Kit for Furrion® Chill A/C Units - Castle Winch, LLC

However, installing the kit might void your warranty, so modify at your own peril

 

[rlh1957]

Trying to find a schematic on chaparral 381 dbl 2024

We just bought one I noticed the 2025 now has 3 seperate thermostats I would love to add the additional two if possible and also get away from this temp sensor garage that is built into the furrion acs

Good Luck with finding any schematics for anything on a rig. Possibly the thermostat manufacturer will have thermostat specific wiring or install.
No RV Manufacturer provides, discloses or sells schematics or drawings of how or what they have installed on their product.

Do you have three different HVAC units?
Usually they are controlled by zones at the thermostat or by a Bluetooth connection via phone.
Some units in a model may have more than one thermostat… but how they are connected is your guess.
Lippert, Furrion, etc may have insight into their products but are blind to what manf. did eith them.

New owner materials from manf & dealer should help with thermostat operation.

 

[kevinpouliot]

Good Luck with finding any schematics for anything on a rig. Possibly the thermostat manufacturer will have thermostat specific wiring or install.
No RV Manufacturer provides, discloses or sells schematics or drawings of how or what they have installed on their product.

Do you have three different HVAC units?
Usually they are controlled by zones at the thermostat or by a Bluetooth connection via phone.
Some units in a model may have more than one thermostat… but how they are connected is your guess.
Lippert, Furrion, etc may have insight into their products but are blind to what manf. did eith them.

New owner materials from manf & dealer should help with thermostat operation.

The problem is with this setup is we have 3 furrion chill ac units all are ducted. Apparently these new furrion units have the temp sensor built into the ac units not the thermostat. So when they are running cold air is passing over them giving inaccurate readings. There is no way when it is 90 degrees outside that my as in the rear bedroom after just being turned on from traveling for the day gets to 45 degrees I less than 5 minutes and then turns off because it thinks the setpoint has been reached. All 3 units fight each other if we try to run them all.

 

[rlh1957]

The problem is with this setup is we have 3 furrion chill ac units all are ducted. Apparently these new furrion units have the temp sensor built into the ac units not the thermostat. So when they are running cold air is passing over them giving inaccurate readings. There is no way when it is 90 degrees outside that my as in the rear bedroom after just being turned on from traveling for the day gets to 45 degrees I less than 5 minutes and then turns off because it thinks the setpoint has been reached. All 3 units fight each other if we try to run them all.

On your walls somewhere are small quarter to half dollar size plastic domes. Should be one in each zone room of the AC.
The thermostatic sensors are behind these.
Sometimes they are in goofy places that really don’t measure correct room ambient temp.
If you remove the cover, with sll the air on, feel if air is flowing from behind in the wall. Plug this with tissue paper or cotton behind sensor to eliminate erroneous air.
You may have to manually set each zone temperature number to meet your comfort needs.
Their idea of zone temp control is a flop and doesn’t work as you want it too.

 

[NH_Bulldog]

When the InCommand system was used, it was mated to Coleman Mach AC’s, and used the remote sensors. Keystone eliminated InCommand (thankfully), and switched to Furrion AC units. The Furrion system uses a temperature sensor in the return air plenum. This is a known issue, but not just with Keystone, it is across every manufacturer. Keystone told me that they would authorize a dealer to relocate the sensors on mine but I declined and changed out the thermostats to EasyTouch models and adjusted the differentials which solved the issue. You can also buy a relocate kit yourself if you are handy

 

[kevinpouliot]

On your walls somewhere are small quarter to half dollar size plastic domes. Should be one in each zone room of the AC.
The thermostatic sensors are behind these.
Sometimes they are in goofy places that really don’t measure correct room ambient temp.
If you remove the cover, with sll the air on, feel if air is flowing from behind in the wall. Plug this with tissue paper or cotton behind sensor to eliminate erroneous air.
You may have to manually set each zone temperature number to meet your comfort needs.
Their idea of zone temp control is a flop and doesn’t work as you want it too.

Not in these units they are built directly into the ac units for whatever dumb reason or another. There is a fix to relocate them but know you have to try and fish a wire down to the walls to mount them.

When the InCommand system was used, it was mated to Coleman Mach AC’s, and used the remote sensors. Keystone eliminated InCommand (thankfully), and switched to Furrion AC units. The Furrion system uses a temperature sensor in the return air plenum. This is a known issue, but not just with Keystone, it is across every manufacturer. Keystone told me that they would authorize a dealer to relocate the sensors on mine but I declined and changed out the thermostats to EasyTouch models and adjusted the differentials which solved the issue. You can also buy a relocate kit yourself if you are handy

I understand all this but with the ammount of money we all pay for these units we shouldn’t have to be paying or fixing these units ourself. I don’t see how changing the thermostat will fix this issue the adjustment differential can’t be enough to resolve this issue. When my back ac is running at 75 degrees the main unit thinks it’s 45 degrees how can you ever even get a close number with a system this far off

 

[rlh1957]

Sorry I didn’t specify my model to OP.
Yes Keystone wisely dumped the In Command that my 2020 29RKS has. InCommand is a good for nothing system.

When we replaced front AC we elected to put in an EasyTouch thermostat. They aren’t cheap but well worth it and gives you control that In Command doesn’t. The back AC is still on In Command. Both AC’s are connected to the crossover ducting.

 

[NH_Bulldog]

Not in these units they are built directly into the ac units for whatever dumb reason or another. There is a fix to relocate them but know you have to try and fish a wire down to the walls to mount them.

I understand all this but with the ammount of money we all pay for these units we shouldn’t have to be paying or fixing these units ourself. I don’t see how changing the thermostat will fix this issue the adjustment differential can’t be enough to resolve this issue. When my back ac is running at 75 degrees the main unit thinks it’s 45 degrees how can you ever even get a close number with a system this far off

So call Keystone like I did and maybe they will offer you the same free fix they offered me? Otherwise, fix it yourself and move on. Sensor relocation kits are pretty inexpensive and if you are handy, you could even do it yourself without buying a kit.

It isn’t a Keystone issue, it is a Furrion issue, but Keystone was willing to make it right (at least for me). This is what they said to me: “We would recommend that you contact an authorized dealership to have this addressed. We would be willing to assist with getting the location moved that won’t compromise the temperature, this would be one time goodwill gesture.”

Again, my EasyTouch thermostat fixed the issue simply by altering the differential, but you do need to have a separate one for each AC

 

[workinonit]

So Kevin, I never read where you actually verified that you have In Command for controlling your RV functions. If you do I suspect you have remote thermistors for each zone. If you don't then you should have some type of thermostat. I've never seen AC units with thermistors mounted in the return air box on the unit. That is a bit silly if that's the case. I have an Alpine with 2 factory units and In Command. I happen to be in the camp that disagrees with the naysayers in this thread and I like In Command. Now when it decides to crap out I will be in their camp but I will replace it and move on. So let us know if you have In Command or old fashioned switches and thermostats.

 

[NH_Bulldog]

I've never seen AC units with thermistors mounted in the return air box on the unit. That is a bit silly if that's the case.

Furrion does in fact install the thermistor in the return air plenum and yes, it is a very bad design. It is easy to correct, but we shouldn’t have to. GD has been using the Furrion units longer than Keystone and after enough complaints, they corrected the issue at the time of installation at the factory. It is only a matter of time before Keystone sees the light as well. Until then, if you ask nicely they may offer to correct it at no cost. Otherwise a capable DIYer can do it at no cost in about 15-20 minutes or buy an available relocation kit (or replace the thermostat like I did which I was doing anyway for the BT and WIFI capability).

 

[CedarCreekWoody]

This is not just a Keystone issue. My Grand Design also has Furrion units with the sensors in the return air ducts. Stupid design! The A/C units fight each other and even themselves and continually short cycle. I'm about to take the issue up again with Grand Design. Their "fix" of poking the sensor through the grating does not work.

 

[workinonit]

I guess if you throw it together we will buy it. That is ridiculous. But truthfully, the locations of the thermistors in my RV aren't very much better. The big room thermistor is on the back outside wall. It's like they think of the worse possible thing to do and do it.