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Old 07-24-2016, 08:29 AM   #1
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Dometic AC Error Codes

At some time in the past I researched the Dometic Error Codes. I ran across them recently and thought it might be helpful to submit them.

E1 - Loss of comm signal between CCC2 thermostat & system power module board
E2 - Open circuit or out of range indoor temp sensor - Fan only will work
E3 - Shorted indoor temp sensor - Fan only will operate
E4 - Open circuit or out of range outdoor temp sensor
E5 - Open circuit or out of range freeze sensor
E6 - Open circuit humidity sensor
E7 - Loss of 120v power
E8 - Invalid zone config. Dip switches set incorrectly
E9 - Invalid zone config. Check dip switches
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Old 07-24-2016, 08:47 AM   #2
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Thanks. I'm embarrassed to ask - but where does one find these codes? Is it in the AC unit itself somewhere? Is there a diagnostic tool to connect? Thanks!
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Old 07-24-2016, 11:40 AM   #3
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They're in the operator's manual for the thermostat and on Dometic's website.
Terry
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Old 09-30-2016, 02:44 PM   #4
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Does anyone know how to remove the inside cover on the Dometic Penguin II units?
I am continually getting an E1 code.
It happens so often I think there must be a loose connection where the data cables to the 15,000 BTU unit and the 13,500 BTU unit where they are connected.
It is my understanding that to get to the data cables I must remove the inside cover.
The data cable from one unit to the other is supposed to be black and I know the cable to the thermostat is gray.
My understanding is that the connector looks like something you would connect ordinary telephone cables with and is in all office buildings and possibly even available at Walmart in the phone section.
I want to get this thing apart and look at it to see what I can do.
Dometic tech support is no help and I am too far away from a service center to have them look at the wiring.
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Old 09-30-2016, 03:49 PM   #5
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Quote:
Originally Posted by m.hony View Post
Does anyone know how to remove the inside cover on the Dometic Penguin II units?
I am continually getting an E1 code.
It happens so often I think there must be a loose connection where the data cables to the 15,000 BTU unit and the 13,500 BTU unit where they are connected.
It is my understanding that to get to the data cables I must remove the inside cover.
The data cable from one unit to the other is supposed to be black and I know the cable to the thermostat is gray.
My understanding is that the connector looks like something you would connect ordinary telephone cables with and is in all office buildings and possibly even available at Walmart in the phone section.
I want to get this thing apart and look at it to see what I can do.
Dometic tech support is no help and I am too far away from a service center to have them look at the wiring.
If I remember correctly the connection for the data cable is inside the trailer. Remove the Air Distribution Cover inside to access it.
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Old 10-01-2016, 08:17 AM   #6
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I haven't found all the screws to remove the air distribution box.
I think there are 8.
1 front
1 back
1 each in 2 directional vents
2 each in 2 filter areas


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Old 10-01-2017, 11:05 AM   #7
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Dometic refrigerator won't turn on after loss of converter

We had a complete failure of our converter in our Airstream 2016 Classic. We had roadside assistance the technician had us buy a battery to provide the power so we could continue to use the trailer until we could get a service appointment (it was completely dead with no charge to the batteries).

Everything was working fine with the trailer on a large battery charger, but now the refrigerator won't turn on and is flashing error code 4. Sometimes it flashes error code 3. We've tried running it on LP only, tanks are full, but it isn't turning on at all at this point. Any ideas how we could limp along and get it back up and running? Our first earliest service appointment is after a trip next weekend.

Thanks and would appreciate any ideas!
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