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I purchased a new replacement Dometic 579 Air conditioner.

Customer Question
I purchased a new...

I purchased a new replacement Dometic 579 Air conditioner. The new one didn’t have a freeze sensor wire like the old one did.

Mechanic's Assistant: Which particular sensor are you asking about? And have any trouble codes been triggered?

Yes my CCC2 T-stat says E-5

Mechanic's Assistant: What is the make/model/year of your RV?

2011 Montana 5th wheel

Mechanic's Assistant: Are you fixing your Montana yourself? What have you tried so far?

Yes every thing is installed

Mechanic's Assistant: Anything else you want the Mechanic to know before I connect you?

L don’t think so

Submitted: 2 years ago.Category: RV
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Answered in 2 minutes by:
4/27/2020
RV Mechanic: Randall, RVIA Certification replied 2 years ago
Randall
Randall, RVIA Certification
Category: RV
Satisfied Customers: 28,212
Experience: RVDA/RVIA Master Certified Technician with many years experience.
Verified

Hi! My name is ***** ***** I can assist you with this. I may need some additional information from you first in order to give a complete answer.

Please give me a few minutes to type up an answer for you here. Thanks!

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Customer reply replied 2 years ago
I replaced my dometic rv air conditioner the new one didn't have a freeze sensor wire and now the ccc2 thermostat is saying error code E-5
RV Mechanic: Randall, RVIA Certification replied 2 years ago

Good morning! Thank you for bringing your question to us here at Just Answer. I apologize for the delay in someone getting to your question! Thank you for your patience. Sometimes we get overwhelmed with questions and some of our techs may be on vacation.

I am sorry to hear that you are having a problem trying to figure out how to keep the door on your Dometic fridge closed. I have an RV repair facility and work on these for a living and I can tell you that there should be a freeze sensor. Did you get a board on the A/C or are you trying to use the old one? If you are using a CCC2 thermostat then it has to have that control module and it would have a freeze sensor. Let me know which control board or module you have.

I hope this points you in the right direction here. Please get back to me again later if you need additional assistance with this as all follow ups are included in our one time fee. No time limit. Thanks! Randall in RV

I think this should have a #3109226.005 control box IF this has a return air grill underneath the A/C.

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Customer reply replied 2 years ago
It is a model(###) ###-####000 which says on it it is compatible with a 579 model air conditioner.
it is a new board and a new ccc2
RV Mechanic: Randall, RVIA Certification replied 2 years ago

Then it should have come with a new freeze sensor.

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RV Mechanic: Randall, RVIA Certification replied 2 years ago

You can buy that. They aren't expensive.

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Customer reply replied 2 years ago
I just ordered one thanks
RV Mechanic: Randall, RVIA Certification replied 2 years ago

10-4

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Randall
Randall
Randall, RVIA Certification
Category: RV
Satisfied Customers: 28,212
28,212 Satisfied Customers
Experience: RVDA/RVIA Master Certified Technician with many years experience.

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