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Old 08-07-2015, 07:58 PM   #1
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Domestic AC error E7 HELP

Anyone know what to do when you get a error E7 on the domestic AC on a Berk?


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Old 08-07-2015, 08:00 PM   #2
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Usually means you don't have power. Are you on generator? If so check the breaker on the gen itself.
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Old 08-07-2015, 08:05 PM   #3
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Where's the breaker


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Old 08-07-2015, 08:06 PM   #4
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I'm on generator



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Old 08-07-2015, 08:09 PM   #5
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Got it!
You're the man campin Cajun, you saved us!


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Old 08-07-2015, 08:18 PM   #6
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No problem, it happened to me on my last trip out. That's how I knew what it could be.
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Old 08-07-2015, 09:30 PM   #7
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This forum is so helpful!! Especially for a novice like me!!! So many on hear have seen or know must all situations!! I had a living room light issue that mechanic, electrician and even Forest river when I called had little clues of! I posted my problem and 20 minutes someone diagnosed it to the wire!! Great info!!


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Old 08-07-2015, 10:15 PM   #8
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Agree Texas Realtor, great info and wonderful people always willing to help! Cool 67 degrees right now thanks to Campin Cajun!


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Old 08-08-2015, 11:31 AM   #9
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Breaker is under the bed in the panel on our 2013 berk
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Old 08-08-2015, 11:36 AM   #10
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I installed a separate breaker panel so every thing is on the inverter except the AC, W/D, and Heat pump. So I'm working on killing the frig def heater it draws 45 amps when its on it does a number on my batteries.
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Old 08-08-2015, 12:25 PM   #11
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I know that this error will display if ac is on while using generator and if for some reason the Genet fails of is turned off. Will go away once generator is turned back on. Best to remove load from Genet before restarting.
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Old 08-08-2015, 12:56 PM   #12
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From the Dometic Comfort Control Center 2 Thermostat User's Guide:

Error Code:
E1 Loss of communication between the
CCC 2 thermostat and all system power
module boards. System will shut down.
E1 Loss of communication between the
CCC 2 thermostat and an individual system
power module board. The LED will
display error code E1 and the zone number
that lost communication. Any additional
zones that lose communication will
blink in addition to the current zone.
E2 Open circuit or out-of-range Indoor Temperature
sensor. All heat, cool, and dehumidify
operation will be locked out.
Manual fan operation can continue.
E3 Shorted Indoor Temperature Sensor. All
heat, cool, and dehumidify operation will
be locked out. Manual fan operation can
continue.
E4 Open circuit or out of range Outdoor
Temperature Sensor (Select Models).
Heat pump and dehumidification operation
will be locked out. Air conditioner,
furnace, heat strip and fan operation can
continue to operate.
E5 Open circuit or out of range Freeze Sensor
(Select Models). Air conditioner and
dehumidification operation will be locked
out. Heat pump, furnace, heat strip and
fan operation can continue to operate but
displays the last temperature set-point.
E6 Open circuit Humidity Sensor (Select
Models). Air conditioner and dehumidification
operation will be locked out. Heat
pump, furnace heat strip and fan can
continue to operate.
E7 Loss of 120 VAC power to all power module
boards on the system. The system
will shut down.

E8 Invalid zone configuration. The heat
pump and heat strip DIP switches are
both set to the ON position in one zone.
Heat pump, heat strip, air conditioner,
and dehumidify operation will be locked
out in the affected zone.
E9 Invalid zone configuration. The dehumidifier
DIP switch and either the heat pump
or heat strip DIP switches are set to the
ON position in one zone. Heat pump,
heat strip, air conditioner, and dehumidify
operation will be locked out in the affected
zone.
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Old 08-08-2015, 05:16 PM   #13
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Dickie

Must be a female ... we males would never resort to reading a manual less share it with other.
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Old 08-08-2015, 05:35 PM   #14
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Quote:
Originally Posted by lefaivre View Post
Dickie

Must be a female ... we males would never resort to reading a manual less share it with other.

😈


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Old 08-09-2015, 05:11 AM   #15
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Back in the wage earning days, we use to have a saying when stuck with a problem: RTFM - Read The Fine Manual. (Other substitute words usually, however.)
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Old 08-09-2015, 03:16 PM   #16
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I have a 2015 Charleston, and I have been PLAGUED with the "E7" error on the Dometic A/Cs for over a year now. I think I've finally got the reason this error is occurring figured out. When you switch from shore power to generator (or reverse), the power drops out for a fraction of a second - A/C units do not like that... It causes the compressors to draw lots of power and blow the circuit breakers. I have started turning off the A/Cs when I start to get ready to set up (or break) camp. I turn off the A/Cs at the thermostat, Plug into shore power, stop the generator, and then turn the A/Cs back on after a 10 minute or so rest. I'm now 2 weeks in to our trip, and have not had a single E7 error, since using this method! I would think that Dometic would allow for power dropouts in the design of their units, but I guess not...

Best of luck, and stay cool!

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