Free 7 Day Trial RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Free 7 Day Trial ×
RV Trip Planning Discussions

Go Back   iRV2 Forums > MOTORHOME FORUMS > Class A Motorhome Discussions
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
Thread Tools Search this Thread Display Modes
Old 08-06-2021, 09:06 PM   #1
Senior Member
Newmar Owners Club
Spartan Chassis
Join Date: Apr 2017
Location: Eden, UT
Posts: 388
Upgrading Dometic Penguin II Control Boards

I am upgrading the control boards on my newer Penguin II AC/Heat Pumps to be compatible with the Micro-Air EasyTouch RV thermostat. We tried the EasyTouch that was compatible with the 5 button on my coach but found out that the older control boards do not send coach temperature settings back to the thermostat. We wanted to be able to monitor the coach remotely.

Ok, here is the question. The newer control boards connections are not identical to the 5 button control board. The first difference was that the newer control board has a connection for all three blower speeds (High, Med, Low). I simply connected the yellow wire from the motor to the control board medium setting. This was pretty easy as there was a diagram on the motor. The connection that I am really looking for insight on (that I think I have right) is the purple wire. The purple wire connected to a switch labeled T4. The new control board has a terminal that is also T4. Is is labeled REV-VALVE. I traced the purple wire back to the compressor and low and behold it was connected to a electronic valve. I'm pretty sure this is the valve that reverses the refrigerant flow to heat versus cool. The only other thing that wasn't plug and play was the red terminal on the original control board. It connects to P3 and is an outdoor temperature sensor. It was also labeled P3 on the original control board.

Has anyone done this and am I on the right track on the purple wire? I haven't powered the system up yet until I get some feedback here. I think I am ok, but with a trip a week from now - I cannot afford to screw something up.
Attached Thumbnails
Click image for larger version

Name:	IMG_0018.jpg
Views:	8
Size:	276.8 KB
ID:	338632   Click image for larger version

Name:	IMG_0021.jpg
Views:	12
Size:	315.0 KB
ID:	338633  

Click image for larger version

Name:	IMG_0026.jpg
Views:	8
Size:	262.3 KB
ID:	338634   Click image for larger version

Name:	IMG_0027.jpg
Views:	9
Size:	282.9 KB
ID:	338635  

2006 Newmar Mountain Aire 4301, Cinnabar
ColoradoBnd is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free! RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Replace older Dometic Penguin Heat Pumps with Newest Penguin II Units. shaman52 Newmar Owner's Forum 25 07-21-2017 07:58 AM
Dometic, Penguin II - Quality Control or Design Problems? Sky_Boss RV Systems & Appliances 0 03-01-2015 12:40 PM
plug miss wire..blew control boards on ac Randis59 RV Systems & Appliances 2 05-28-2013 06:16 PM
cruise control boards 1993 bounder dunkin MH-General Discussions & Problems 4 02-20-2013 09:38 AM
dometic ac control boards ktm500mx Newmar Owner's Forum 2 07-24-2011 08:46 AM

» Featured Campgrounds

Reviews provided by

All times are GMT -6. The time now is 12:02 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2022, vBulletin Solutions, Inc.