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Old 07-22-2021, 01:17 PM   #1
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Join Date: Feb 2021
Location: Cypress, TX
Posts: 22
Penguin II A/C Installation - Wiring

I'm replacing the 2nd zone AC unit on my 07 Newmar Mountian Aire.
I took off the Duo-Therm 630516.331 and am replacing it with a Penguin 651816HXX1C0-01 unit. I've confirmed this is the correct replacement for the original unit. I have a 5 button thermostat so I replaced the new Penguin circuit board with a conversion board.
The new Penguin unit has a six wire connector with a black, red, two yellow and two blue wires. Neither old AC or the RV have these wires. The only wires the RV has are the black/white/ground 110 wires, a thermostat sensor wire and two data cables.
Do I need to have the six wires connected for the unit to blow cold air?
Thank you!
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Old 07-22-2021, 02:54 PM   #2
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Join Date: Aug 2019
Location: Eastern outskirts of Dallas, TX
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The black/white/green are incoming 120VAC power and go to a junction box inside the unit.

Was working with a guy yesterday on a similar situation - the 6 wire plug has 3 basic uses -

2 yellow - noted as “Load shed”
2 blue - noted as “Furnace”
Red - noted as “+12v”
Black - noted as “-12v”

All the above are optional add-on devices that the coach builder may or may not have used. If they are not there, then all will be good and the unit will work.
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Old 07-22-2021, 03:28 PM   #3
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Location: Cypress, TX
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Thank you Mark. Your explanation makes sense. My furnace operates off Zones 1 & 3. Zone 2 never had any furnace control.
So it appears none of the six are required for the cooling and heat pump functions on the unit itself?
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Old 07-22-2021, 03:34 PM   #4
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Location: Cypress, TX
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Is there any kind of conversion needed for the six wires or do I just let them remain in place?
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Old 05-03-2022, 07:07 PM   #5
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One of my replacement units had the same plug. I used the wiring from my old unit and tossed this harness in la basura.

Was a pretty easy job because the wires were all the same colors.
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install, installation, wiring

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