AES fridge problem

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Daffysparks

Subject:

AES fridge problem

· Posted: 06.05.2018 · #1

Dometic AES RM 6505 fridge freezer won’t automatically select 230 volts. Will start on gas or 12 volt if engine started. If I turn off gas or engine (12 volt) it will run on 230 volts, so element is fine, for sure. It appears that when it cuts out on thermostat, that it won’t restart on 230 volts, and if no gas or 12 volt available it will lock out. I’m pretty sure it’s a problem with the control panel, but cannot find one on line. It’s not a huge issue as I mainly wild camp, but it’s handy to cool it on 230 volts before a trip, as it cools much quicker. Any help would be appreciated, or someone with a spare panel, better still.

eirebus

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Subject:

Re: AES fridge problem

· Posted: 07.05.2018 · #2

I think you are not getting enough power to the fridge on EHU but where are you losing the power , possibly in a corroded connection or as you say in the control panel but I'm no expert

baguette

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Subject:

Re: AES fridge problem

· Posted: 07.05.2018 · #3

I've found that a lot of campsites, when busy, have an insufficient power supply to the site.
That results in a voltage drop and I've measured voltages as low as 185v. This is bad for sensitive electronics and the AES fridges will automatically change over to gas if a voltage below their threshold is detected.

Daffysparks

Subject:

Re: AES fridge problem

· Posted: 07.05.2018 · #4

I am having a look at it this morning. Don’t want to get too involved as heading to continent at end of month and don’t want to create a new/bigger problem. Checked voltage at fridge socket and getting 235volts. Plug looks clean. Had a quick look at relay connections, although they are 12 volt. Plugged it in without gas on and away it went first time. Usually it tries gas first.
Flummoxed. Will leave it on and see does it click back in after stat opens and re-closes

Daffysparks

Subject:

Re: AES fridge problem

· Posted: 07.05.2018 · #5

Well I have had the ehu connected since 11 am. Fridge working fine. Have heard it clicking in and out. Haven’t a clue why it is suddenly working perfectly. Hardly anything to do with plugging it out and back in.
Could lack of use on 230 have caused this, as I never plug it in normally

eirebus

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Subject:

Re: AES fridge problem

· Posted: 07.05.2018 · #6

You could have had the voltage drop at the plug and you cleaned it by unplugging it , disturbed some light corrosion ??? or made a relay move and clean

Daffysparks

Subject:

Re: AES fridge problem

· Posted: 07.05.2018 · #7

Maybe, but it looked good to be honest. I am going to leave it on for a few days in ehu only and see does it stay going. I presume there is no issue with leaving it on 230 volts for that long

eirebus

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· Posted: 11.05.2018 · #13

Quote by Daffysparks

Hi mine come back from work shop still not working on 230volt but worked fine on gas and 12volt , after reading your post I tried it again on gas then plugged in camper to mains and turned of gas now for some very strange reason it's worked all night on mains

. I really haven't a clue what's going on with it , it is in possible to get a controll board Iv been told . But hopefully it stays working on mains

Daffysparks

Subject:

Re: AES fridge problem

· Posted: 11.05.2018 · #14

I’ll try mine again tomorrow and see will it work on 230 again. Here’s hoping

Thorn123

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Subject:

Re: AES fridge problem

· Posted: 11.05.2018 · #15

Back in our caravan days, we would take a seasonal pitch for the summer. It was nothing unusual for someone fridge to balls up especially on the 220 volt side.
These fridges in caravans/ mh/ campers work on the principle of heating the refrigerator gas which in turn cools the cabinet when the gas is condensing.
The 220 volt element is prone to breaking, or on some models the 220 volt is stepped down to 12 volts and the transformer goes.
Daffy, time to put your sparky hat on.
Malcolm

Daffysparks

Subject:

Re: AES fridge problem

· Posted: 11.05.2018 · #16

230 volt element, is 100% functional, as is the Seperate 12 volt element. As is the gas. The issue is, AES not recognizing 230 volts are available and remaining on gas.
I suspect a lack of use on 230 volts, causing less than 200volts reaching the control panel or simply the relay sticking due to lack of use as being the cause now. I assure you Thorn, the sparks hat is well and truly on

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Subject:

Re: AES fridge problem

· Posted: 12.05.2018 · #17

Ok daffy ,it's a shot in the dark here but bear with me.
Do you feel that you can wire the 220 volt element direct to power and eliminate the panel and etc. If so plug in the fridge but through a timer plug. 5 minutes power on ,5 minutes power off. Meanwhile get a six pack of your favourite beer and monitor your amp draw .
The next step would be to include the relay into the circuit but without the switch wire, a simple bypass .
With both of those successful, that would eliminate the element and the relay as problem but then that leaves the switch wire of the relay as the problem.
I don't want to say too much info here in case some fool wires themselves into trouble.
Malcolm

Daffysparks

Subject:

Re: AES fridge problem

· Posted: 12.05.2018 · #18

Malcolm I have gone down that road as far as I am willing at the moment. I’m heading away for 17 nights in two and a half weeks, and with the fridge having to be removed to get at control panel, and with fridge perfect on gas and 12 volt, I’m not taking a chance on anything f%^king up so close to going. I’ll leave it till I get back. And for sure don’t want to get too detailed on bypass as it could lead to a major f#%k up for someone

Daffysparks

Subject:

Re: AES fridge problem

· Posted: 12.05.2018 · #19

Update
Final look at this before the trip. Tried fridge on 230 this morning. No joy. Put it onto gas, perfect. Turned off gas no joy on 230. Started engine to engage 12 volt, perfect. Stop engine, wait the 15 minutes no switch over to 230, could hear it trying to ignite gas that was still turned off. Turn back on gas. Perfect. Enter diagnostic mode. Put it on 230 volt test, perfect. Thinks, this might be a work around, NO, after 4 minutes it returns to normal function. Got in at control panel, even though I said I wouldn’t, took cover off, all sealed in, in resin compound. No way to access anything except the spade connections. Gentle tap on relay heads, as that’s all that’s visible. Nothing doing.
So there it is... a power module wanted, if I’m arsed getting it working on 230 volts, and not easily available, if at all. Or a new fridge, expensive. Google here I come

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· Posted: 15.01.2020 · #24

Quote by jaydog

Did you sort this problem, I have the exact thing going on with my fridge.

Mine was the 6 series fridge. Just an on/off switch and a temperature selector. If yours is the same, it’s a terminal issue I’m afraid. The control boards are unavailable, I searched everywhere. I ended up replacing the entire fridge/ freezer. Expensive.

Stoney

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Subject:

Re: AES fridge problem

· Posted: 16.01.2020 · #25

David, sending you a PM. You should find it helpful.

jaydog

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Subject:

Re: AES fridge problem

· Posted: 16.01.2020 · #26

Quote by eirebus

Quote by jaydog

Did you sort this problem, I have the exact thing going on with my fridge.

What is the make and model of your fridge, there's 2 different endings to this problem, depending on make and particularly model of your fridge

Mine is the AES 6505 model...

jaydog

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Subject:

Re: AES fridge problem

· Posted: 16.01.2020 · #27

Quote by Stoney

David, sending you a PM. You should find it helpful.

A solution dare I ask..?

Daffysparks

Subject:

Re: AES fridge problem

· Posted: 17.01.2020 · #28

Quote by jaydog

Quote by Stoney

David, sending you a PM. You should find it helpful.

A solution dare I ask..?

Possibly.....I’ll try copy and paste to here for you,

panda

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Subject:

Re: AES fridge problem

· Posted: 17.01.2020 · #29

Quote by Daffysparks

Hi David, There is a guy in Italy who manufactures replacement boards for your fridge. His name is Paolo and you can contact him through 'Whats App' on He prefers the Whats App method.

The cost for a replacement board from him is €150.00 + shipping which is about another €20 for courier.

I found this guy on the Italian motorhome forum (Camperonline) and apparently he has been doing this for years, with great success, as Electrolux stopped supplying these boards about 10 years ago.

Saves buying a new fridge!

This information is from Stoney. Hope he doesn’t mind me sharing it.

Thats super info for anyone with that model fridge....Well done Stoney

Liked by: Ally, CHAUSSON, Chevy g20, eirebus, jaydog, ntg, sprinter

jaydog

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Subject:

Re: AES fridge problem

· Posted: 17.01.2020 · #30

Quote by Daffysparks

Hi David, There is a guy in Italy who manufactures replacement boards for your fridge. His name is Paolo and you can contact him through 'Whats App' on removed by request t, He prefers the Whats App method.

The cost for a replacement board from him is €150.00 + shipping which is about another €20 for courier.

I found this guy on the Italian motorhome forum (Camperonline) and apparently he has been doing this for years, with great success, as Electrolux stopped supplying these boards about 10 years ago.

Saves buying a new fridge!

This information is from Stoney. Hope he doesn’t mind me sharing it.

Many thanks for this... definitely worth a punt I think.. I’ll contact the guy and let you know how I get on

Liked by: Ally, Chevy g20, eirebus, JettaJohn, ntg, panda, +deleted user

jaydog

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Subject:

Re: AES fridge problem

· Posted: 17.01.2020 · #31

Just WhatsApp’d this guy Paolo in Italy.. got an immediate response asking me the problem.. said he can build me a new board , will take 3-4 days. I’m going to go for it , think it’s worth it considering the alternative of a new fridge, will keep you updated of the outcome. Thanks for the help on here so far

Liked by: Ally, CHAUSSON, Chevy g20, eirebus, JettaJohn, Mark&Wendy, ntg, panda, +deleted user

eirebus

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Subject:

Re: AES fridge problem

· Posted: 17.01.2020 · #32

Great to hear, as up to this, anyone with a 6 series was having to get a replacement fridge, MHC scores again

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sprinter

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Subject:

AES fridge problem

· Posted: 17.01.2020 · #33

Quote by eirebus

Great to hear, as up to this, anyone with a 6 series was having to get a replacement fridge, MHC scores again

But will the Carlsberg be cold enough.

mad max

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Subject:

Re: AES fridge problem

· Posted: 17.01.2020 · #34

Quote by sprinter

But will the Carlsberg be cold enough.

It will get drank cold or not

Liked by: eirebus

jaydog

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Subject:

Re: AES fridge problem

· Posted: 18.01.2020 · #35

Quote by Daffysparks

Hi David, There is a guy in Italy who manufactures replacement boards for your fridge. His name is Paolo and you can contact him through 'Whats App' removed by admin t, He prefers the Whats App method.

The cost for a replacement board from him is €150.00 + shipping which is about another €20 for courier.

I found this guy on the Italian motorhome forum (Camperonline) and apparently he has been doing this for years, with great success, as Electrolux stopped supplying these boards about 10 years ago.

Saves buying a new fridge!

This information is from Stoney. Hope he doesn’t mind me sharing it.

Hi, Paolo is not happy his personal detAils have been shared on here. This is understandable. He wants to help people, so could I respectfully ask the comments with his details in to be removed, he can be contacted on the camperonline forum through a private message... many thanks he is a nice guy.

Daffysparks

Subject:

Re: AES fridge problem

· Posted: 18.01.2020 · #36

That’s what I was afraid of. Sorry Paolo. Moderators please remove this information

Daffysparks

Subject:

Re: AES fridge problem

· Posted: 18.01.2020 · #37

Jay dog you can delete your posts. It’s up to others or a moderator to delete others

Ally

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Subject:

Re: AES fridge problem

· Posted: 18.01.2020 · #38

Details removed

Liked by: eirebus, +deleted user

jaydog

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Subject:

Re: AES fridge problem

· Posted: 18.01.2020 · #39

Quote by Daffysparks

Jay dog you can delete your posts. It’s up to others or a moderator to delete others

He’s happy for people to know about him, but did not want his number on an open forum... many thanks to you , I would never have found him otherwise.. reading though the pages on the Italian forum the man is somewhat a genius.! Thanks again

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Stoney

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Subject:

Re: AES fridge problem

· Posted: 19.01.2020 · #40

This is the very reason why I sent a 'Private Message' to Daffysparks. I did not give permission for my message to be copied to this thread and if I had been asked I would have said NO!
It took me a lot of time and effort to find this guy and I have no problem passing on his details to individuals who may need and deserve it but I never intended for it to go Public.
Jaydog, I'm glad you are getting something out of it.

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