Goodbye Dometic RMD8505, hello Thetford T2160 (1 Viewer)

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Sep 19, 2019
312
550
Warwick, UK
Funster No
64,561
MH
Hymer Exsis-t
My absorption fridge/freezer is 4 years old and I’ve never been happy with it. I installed extraction fans (which worked well) and replaced the heat sink paste. Despite this I found the freezer temperature varied considerably (probably because the thermostat is in the fridge). The freezer wasn’t cold enough for ice cream or keeping some foods cold enough. I didn’t like the fridge at the bottom as I had to get on my hands and knees to access food at the back of the bottom shelf. I didn’t like the way the freezer food had to be packed. The fridge took a long time to get down to temperature and cooling was very uneven.

Well, the cooling unit at the back gave up. The cost of replacing it, assuming you can still get them (which would involve removing the fridge/freezer), was the excuse I needed to ditch the RMD8505.

I’ve replaced it with a Thetford T2160 compressor fridge/freezer. It has the same external dimensions as the RMD8505 so is a straight swap. The fridge is at the top, it has an internal fan, the interior light that actually shows what’s in the fridge and it comes with a full set of shelves (unlike the RMD8505). The 3 star freezer is a pullout drawer, making it easier to pack and access food, and it is cold enough for storing ice cream! I was concerned about the noise it might make but it hasn’t woken us up. The cost of it is significantly cheaper than the Dometic replacement (which I believe is a different size requiring modifications to the cabinet).

I wish I’d done this change a long time ago.

It uses about 45Ah over 24 hours. I have 210Ah of LiFePO4 (2 x Fogstar 105Ah), 240W solar, 30A B2B (Votronic VCC 1212-30). So far, so good.

I will be posting some Dometic fridge/freezer items for sale over the next few days.

IMG_3075.jpeg IMG_3079.jpeg IMG_3080.jpeg IMG_3085.jpeg IMG_3086.jpeg IMG_3128.jpeg IMG_3136.jpeg IMG_3137.jpeg IMG_3138.jpeg IMG_3139.jpeg
 

haganap

LIFE MEMBER
Dec 5, 2007
12,812
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planet earth
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974
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Niesman+Bischoff 79e
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I'm an oldbie MH number 10
nice job, can you put me down for the PCB board, sure my fridge is the same. How mcuh was the new one by the way? I like the idea of the freezer at the bottom as it's accessed less.
 
Dec 31, 2010
2,747
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Sunny South Shields
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Frankia Platin i7900
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Since 2010
I been looking at doing the same but our RMD8555 does okay plus I have invested in a 12v compressor cool box. I was looking at this and just running it through the inverter not decided yet. 🤔

 

Steve and Denise

LIFE MEMBER
Sep 26, 2011
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Spalding LINCS
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A Class Carthago
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Since 2008
I been looking at doing the same but our RMD8555 does okay plus I have invested in a 12v compressor cool box. I was looking at this and just running it through the inverter not decided yet. 🤔

I am just waiting for mine to give a problem and it will be gone but up to now it’s performed ok, not a bit like the last one all I had to do was whistle and the fridge was out for repair🤣

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Two on Tour

LIFE MEMBER
Sep 16, 2016
10,598
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I been looking at doing the same but our RMD8555 does okay plus I have invested in a 12v compressor cool box. I was looking at this and just running it through the inverter not decided yet. 🤔

Just had a look at the Willow WTM118B and the efficiency rating of F is a bit naf is it not?
 
Oct 25, 2022
125
292
Derventio, in the Kingdom of Mercia
Funster No
92,088
MH
Adria Matrix 670SL
Exp
Since 2018
It uses about 45Ah over 24 hours. I have 210Ah of LiFePO4 (2 x Fogstar 105Ah), 240W solar, 30A B2B (Votronic VCC 1212-30). So far, so good.
Looks good.
We have a similar 12v set up to yours, but at first glance 45Ah/24h seems a large proportion of the available battery capacity. If you're moving every couple of days, which we also usually do, then fine, but losing the gas powered option seems a big "risk" to me without increasing the battery capacity. Touring Europe we do move every few days and generally it is sunnier, so no problem but we spent 5 nights on a rural UK CL with no EHU in August and only ran the batteries down to 60% because we could run the fridge on gas. Wish you luck with it, but I don't think a compressor fridge would work for us, especially when in the UK, without upping the battery capacity as well. And that opens a whole new raft of issues like where to fit it and wiring!
 
Dec 31, 2010
2,747
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Sunny South Shields
Funster No
14,797
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Frankia Platin i7900
Exp
Since 2010
Just had a look at the Willow WTM118B and the efficiency rating of F is a bit naf is it not?
They all seem to be around that figure don't know what the 12v dometic rating is. What would be the difference between a A rated and a F rated ?
The power is for free and the price is nice at under £200 could by alot of power for £1100 price difference between that and the 12v dometic.
 
Last edited:
Apr 20, 2020
1,139
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Northern Ireland.
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70,057
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Adria Compact SC.
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Since 2017
but I don't think a compressor fridge would work for us, especially when in the UK, without upping the battery capacity as well
We also have a compressor fridge which is great.
We only have two 100ah AGM batteries with 230w of solar, but we were able to survive without EHU for a full week in the UK this summer.
This was on a THS and we didn't move, so no additional charging from the engine.
I think we may struggle from now on if going for more than a few days without EHU, but over the summer months we had no issues.
 
Last edited:

oldieish

Free Member
Feb 13, 2012
105
44
West Sussex
Funster No
19,800
MH
N+B Flair 7100i
Exp
Since 2012
"I’ve replaced it with a Thetford T2160 compressor fridge/freezer."

Hello, did you install the replacement compressor fridge yourself? If yes, did you run the feed directly from the leisure battery and what gauge wire please. I ask because I'm in the process of doing this myself but am unsure what size wire and inline fuse to use.

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Lenny HB

LIFE MEMBER
Oct 18, 2007
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On the coast in West Sussex
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Carthago Compactline
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Since 2008 & many years tugging
Looks like a good option but I think you need to double your battery power for use outside of high summer.

I think you have been a bit unlucky with the 8505 we have had two vans with then current one is 6½ years old not had any problems with them. If there was a fault I'd find it as I'm not a fan of Dometic products.

A bit unfair blaming the fridge for the installers faults, the bottom level in our one is fine as its mounted over a foot above floor level, and the number of shelves is what the converter specifies, some converters fit 3 shelves some fit 4.
 

oldieish

Free Member
Feb 13, 2012
105
44
West Sussex
Funster No
19,800
MH
N+B Flair 7100i
Exp
Since 2012
View attachment 813266
From the installation manual.
I used 6mm² for a 4m run and Installed a fuse holder with 15amp fuse adjacent to the batteries.
Cheers
Thank you, just the information I needed. Fuse on the positive or negative? Answered my own question using Google. Fuse on the positive.
 
Last edited:
OP
OP
StillGoing
Sep 19, 2019
312
550
Warwick, UK
Funster No
64,561
MH
Hymer Exsis-t
"I’ve replaced it with a Thetford T2160 compressor fridge/freezer."

Hello, did you install the replacement compressor fridge yourself? If yes, did you run the feed directly from the leisure battery and what gauge wire please. I ask because I'm in the process of doing this myself but am unsure what size wire and inline fuse to use.
I did do it myself. Hymer had already installed a suitable 12V supply as I was able to run the RMD8505 off the leisure battery with the engine off (it took about 15A), so I didn’t need to install new cables.

If you haven’t already done so I recommend reading the T2160 installation manual. Section 7 gives details of the cable size and fuse size.

Thetford T2000 manuals
 
OP
OP
StillGoing
Sep 19, 2019
312
550
Warwick, UK
Funster No
64,561
MH
Hymer Exsis-t
Looks like a good option but I think you need to double your battery power for use outside of high summer.

I think you have been a bit unlucky with the 8505 we have had two vans with then current one is 6½ years old not had any problems with them. If there was a fault I'd find it as I'm not a fan of Dometic products.

A bit unfair blaming the fridge for the installers faults, the bottom level in our one is fine as its mounted over a foot above floor level, and the number of shelves is what the converter specifies, some converters fit 3 shelves some fit 4.
Sadly I don’t have room for more batteries. I did look at how we have used the motorhome over the last four years before converting. Based on that the battery capacity should be fine (famous last words 😂).

If it was Hymer who decided to only supply me with 3 shelves then fair enough but the price Dometic charge for an additional plastic shelf is obscene and taking advantage. The mark up must be way over 90%.

Dometic also sells a fan for the fridge. Again, it is way overpriced for an item that should really come as standard.

The poor design, poor reliability, lack of spares and overpriced accessories has completely put me off Dometic. I just hope I’m not back here in 4 years saying the same about the Thetford! 🤣

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Lenny HB

LIFE MEMBER
Oct 18, 2007
54,922
157,239
On the coast in West Sussex
Funster No
658
MH
Carthago Compactline
Exp
Since 2008 & many years tugging
The poor design, poor reliability, lack of spares and overpriced accessories has completely put me off Dometic. I just hope I’m not back here in 4 years saying the same about the Thetford! 🤣
Hate to say it but Thetford 3 way fridges have a worst rep than Dometic, hopefully the compressor ones are better.
 
OP
OP
StillGoing
Sep 19, 2019
312
550
Warwick, UK
Funster No
64,561
MH
Hymer Exsis-t
Hate to say it but Thetford 3 way fridges have a worst rep than Dometic, hopefully the compressor ones are better.
I used to have a VW T5 which had a Waeco (Dometic) compressor fridge. It died out of warranty and couldn't be repaired.

I don’t seem to have much luck with Dometic fridge/freezers.
 

oldieish

Free Member
Feb 13, 2012
105
44
West Sussex
Funster No
19,800
MH
N+B Flair 7100i
Exp
Since 2012
"I assume you’ve also considered how to cap the existing gas supply?"

I've cut the pipe, used an end cap and gas tape; also make sure the supply tap is off. Should be sufficient(?). Will probably invest in a gas detector spray as an additional precaution.
 

Jez1966

Visiting Coventry
Jul 29, 2022
781
1,195
Watford, Hertfordshire, UK
Funster No
90,232
MH
Swift Kon-Tiki 599 S
Exp
Since 2021
Ironically have you read the post currently above yours re 30A B2B (Votronic VCC 1212-30)?

The fridge is not the only cost though, the lithium upgrade is not cheap.
Personally we're work round the "poor" fridge temp rather than throwing money at it, small qty buy ice cream and consume.
We're currently 5 months into 1 year in the USA living with 110ah lead acid and 100w solar, max 3.5amp if we turn all the lights on, we don't.
Use laptop (Chromebook so 7+ hrs on single charge) & phones to watch stuff, Domestic on gas 24/7.
Have a small inverter in 12v socket to charge laptop while driving, phone us USB sockets.

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oldieish

Free Member
Feb 13, 2012
105
44
West Sussex
Funster No
19,800
MH
N+B Flair 7100i
Exp
Since 2012
My absorption fridge/freezer is 4 years old and I’ve never been happy with it. I installed extraction fans (which worked well) and replaced the heat sink paste. Despite this I found the freezer temperature varied considerably (probably because the thermostat is in the fridge). The freezer wasn’t cold enough for ice cream or keeping some foods cold enough. I didn’t like the fridge at the bottom as I had to get on my hands and knees to access food at the back of the bottom shelf. I didn’t like the way the freezer food had to be packed. The fridge took a long time to get down to temperature and cooling was very uneven.

Well, the cooling unit at the back gave up. The cost of replacing it, assuming you can still get them (which would involve removing the fridge/freezer), was the excuse I needed to ditch the RMD8505.

I’ve replaced it with a Thetford T2160 compressor fridge/freezer. It has the same external dimensions as the RMD8505 so is a straight swap. The fridge is at the top, it has an internal fan, the interior light that actually shows what’s in the fridge and it comes with a full set of shelves (unlike the RMD8505). The 3 star freezer is a pullout drawer, making it easier to pack and access food, and it is cold enough for storing ice cream! I was concerned about the noise it might make but it hasn’t woken us up. The cost of it is significantly cheaper than the Dometic replacement (which I believe is a different size requiring modifications to the cabinet).

I wish I’d done this change a long time ago.

It uses about 45Ah over 24 hours. I have 210Ah of LiFePO4 (2 x Fogstar 105Ah), 240W solar, 30A B2B (Votronic VCC 1212-30). So far, so good.

I will be posting some Dometic fridge/freezer items for sale over the next few days.

View attachment 812236 View attachment 812237 View attachment 812238 View attachment 812239 View attachment 812240 View attachment 812241 View attachment 812242 View attachment 812243 View attachment 812245 View attachment 812246
Did you insert the new fridge directly into the void, or does a compressor require some form of insulation at the back?
 
Feb 28, 2023
50
29
Newcastle-under-Lyme, UK
Funster No
94,307
MH
Autotrail Savannah
Exp
I'm a relative Newbie
what did you use to cover external vents?
Thanks
Easiest way is to keep the vents but just blank them off on the inside of the detachable vent grille moulding. A piece of thin aluminium cut to size and bonded in with silicone or the like. You don't need the external vent for the evaporation process as the vent for the compressor fridge is drawn from inside the van. You could simply put the Winter Covers on permanently, though you might run the risk of some thieving B taking them.
 
Jun 11, 2024
4
3
Funster No
103,751
MH
Autotrail
My absorption fridge/freezer is 4 years old and I’ve never been happy with it. I installed extraction fans (which worked well) and replaced the heat sink paste. Despite this I found the freezer temperature varied considerably (probably because the thermostat is in the fridge). The freezer wasn’t cold enough for ice cream or keeping some foods cold enough. I didn’t like the fridge at the bottom as I had to get on my hands and knees to access food at the back of the bottom shelf. I didn’t like the way the freezer food had to be packed. The fridge took a long time to get down to temperature and cooling was very uneven.

Well, the cooling unit at the back gave up. The cost of replacing it, assuming you can still get them (which would involve removing the fridge/freezer), was the excuse I needed to ditch the RMD8505.

I’ve replaced it with a Thetford T2160 compressor fridge/freezer. It has the same external dimensions as the RMD8505 so is a straight swap. The fridge is at the top, it has an internal fan, the interior light that actually shows what’s in the fridge and it comes with a full set of shelves (unlike the RMD8505). The 3 star freezer is a pullout drawer, making it easier to pack and access food, and it is cold enough for storing ice cream! I was concerned about the noise it might make but it hasn’t woken us up. The cost of it is significantly cheaper than the Dometic replacement (which I believe is a different size requiring modifications to the cabinet).

I wish I’d done this change a long time ago.

It uses about 45Ah over 24 hours. I have 210Ah of LiFePO4 (2 x Fogstar 105Ah), 240W solar, 30A B2B (Votronic VCC 1212-30). So far, so good.

I will be posting some Dometic fridge/freezer items for sale over the next few days.

View attachment 812236 View attachment 812237 View attachment 812238 View attachment 812239 View attachment 812240 View attachment 812241 View attachment 812242 View attachment 812243 View attachment 812245 View attachment 812246
 
Jun 11, 2024
4
3
Funster No
103,751
MH
Autotrail
Hi hope you can help, Just bought a thetford t2160 fridge freezer from Jackson leisure very happy with the inside. But the outside door panels have a 2.5mm gap. I was wondering if you have the same problem
My absorption fridge/freezer is 4 years old and I’ve never been happy with it. I installed extraction fans (which worked well) and replaced the heat sink paste. Despite this I found the freezer temperature varied considerably (probably because the thermostat is in the fridge). The freezer wasn’t cold enough for ice cream or keeping some foods cold enough. I didn’t like the fridge at the bottom as I had to get on my hands and knees to access food at the back of the bottom shelf. I didn’t like the way the freezer food had to be packed. The fridge took a long time to get down to temperature and cooling was very uneven.

Well, the cooling unit at the back gave up. The cost of replacing it, assuming you can still get them (which would involve removing the fridge/freezer), was the excuse I needed to ditch the RMD8505.

I’ve replaced it with a Thetford T2160 compressor fridge/freezer. It has the same external dimensions as the RMD8505 so is a straight swap. The fridge is at the top, it has an internal fan, the interior light that actually shows what’s in the fridge and it comes with a full set of shelves (unlike the RMD8505). The 3 star freezer is a pullout drawer, making it easier to pack and access food, and it is cold enough for storing ice cream! I was concerned about the noise it might make but it hasn’t woken us up. The cost of it is significantly cheaper than the Dometic replacement (which I believe is a different size requiring modifications to the cabinet).

I wish I’d done this change a long time ago.

It uses about 45Ah over 24 hours. I have 210Ah of LiFePO4 (2 x Fogstar 105Ah), 240W solar, 30A B2B (Votronic VCC 1212-30). So far, so good.

I will be posting some Dometic fridge/freezer items for sale over the next few days.

View attachment 812236 View attachment 812237 View attachment 812238 View attachment 812239 View attachment 812240 View attachment 812241 View attachment 812242 View attachment 812243 View attachment 812245 View attachment 812246
My absorption fridge/freezer is 4 years old and I’ve never been happy with it. I installed extraction fans (which worked well) and replaced the heat sink paste. Despite this I found the freezer temperature varied considerably (probably because the thermostat is in the fridge). The freezer wasn’t cold enough for ice cream or keeping some foods cold enough. I didn’t like the fridge at the bottom as I had to get on my hands and knees to access food at the back of the bottom shelf. I didn’t like the way the freezer food had to be packed. The fridge took a long time to get down to temperature and cooling was very uneven.

Well, the cooling unit at the back gave up. The cost of replacing it, assuming you can still get them (which would involve removing the fridge/freezer), was the excuse I needed to ditch the RMD8505.

I’ve replaced it with a Thetford T2160 compressor fridge/freezer. It has the same external dimensions as the RMD8505 so is a straight swap. The fridge is at the top, it has an internal fan, the interior light that actually shows what’s in the fridge and it comes with a full set of shelves (unlike the RMD8505). The 3 star freezer is a pullout drawer, making it easier to pack and access food, and it is cold enough for storing ice cream! I was concerned about the noise it might make but it hasn’t woken us up. The cost of it is significantly cheaper than the Dometic replacement (which I believe is a different size requiring modifications to the cabinet).

I wish I’d done this change a long time ago.

It uses about 45Ah over 24 hours. I have 210Ah of LiFePO4 (2 x Fogstar 105Ah), 240W solar, 30A B2B (Votronic VCC 1212-30). So far, so good.

I will be posting some Dometic fridge/freezer items for sale over the next few days.

View attachment 812236 View attachment 812237 View attachment 812238 View attachment 812239 View attachment 812240 View attachment 812241 View attachment 812242 View attachment 812243 View attachment 812245 View attachment 812246
My absorption fridge/freezer is 4 years old and I’ve never been happy with it. I installed extraction fans (which worked well) and replaced the heat sink paste. Despite this I found the freezer temperature varied considerably (probably because the thermostat is in the fridge). The freezer wasn’t cold enough for ice cream or keeping some foods cold enough. I didn’t like the fridge at the bottom as I had to get on my hands and knees to access food at the back of the bottom shelf. I didn’t like the way the freezer food had to be packed. The fridge took a long time to get down to temperature and cooling was very uneven.

Well, the cooling unit at the back gave up. The cost of replacing it, assuming you can still get them (which would involve removing the fridge/freezer), was the excuse I needed to ditch the RMD8505.

I’ve replaced it with a Thetford T2160 compressor fridge/freezer. It has the same external dimensions as the RMD8505 so is a straight swap. The fridge is at the top, it has an internal fan, the interior light that actually shows what’s in the fridge and it comes with a full set of shelves (unlike the RMD8505). The 3 star freezer is a pullout drawer, making it easier to pack and access food, and it is cold enough for storing ice cream! I was concerned about the noise it might make but it hasn’t woken us up. The cost of it is significantly cheaper than the Dometic replacement (which I believe is a different size requiring modifications to the cabinet).

I wish I’d done this change a long time ago.

It uses about 45Ah over 24 hours. I have 210Ah of LiFePO4 (2 x Fogstar 105Ah), 240W solar, 30A B2B (Votronic VCC 1212-30). So far, so good.

I will be posting some Dometic fridge/freezer items for sale over the next few days.

View attachment 812236 View attachment 812237 View attachment 812238 View attachment 812239 View attachment 812240 View attachment 812241 View attachment 812242 View attachment 812243 View attachment 812245 View attachment 812246
Hi
Just taken delivery of new thetord t2160 fridge freezer, can you tell me if there is a gap between the panels on the door as the one i have has a 2.5mm gap on the fridge and freezer doors thetford claim this is normal Ive taken photo. Many thanks polly



IMG_0134.jpeg
 
Jan 11, 2022
772
706
Funster No
86,220
MH
Pilote P732 2011
Exp
3rd Time around, since 2000
I would contact Jackson leisure and ask them to replace, you covered under distance selling.
Shouldn’t have that gap.
 
Jan 29, 2012
293
236
Bolton
Funster No
19,629
MH
Autotrail Delaware
Exp
5
My absorption fridge/freezer is 4 years old and I’ve never been happy with it. I installed extraction fans (which worked well) and replaced the heat sink paste. Despite this I found the freezer temperature varied considerably (probably because the thermostat is in the fridge). The freezer wasn’t cold enough for ice cream or keeping some foods cold enough. I didn’t like the fridge at the bottom as I had to get on my hands and knees to access food at the back of the bottom shelf. I didn’t like the way the freezer food had to be packed. The fridge took a long time to get down to temperature and cooling was very uneven.

Well, the cooling unit at the back gave up. The cost of replacing it, assuming you can still get them (which would involve removing the fridge/freezer), was the excuse I needed to ditch the RMD8505.

I’ve replaced it with a Thetford T2160 compressor fridge/freezer. It has the same external dimensions as the RMD8505 so is a straight swap. The fridge is at the top, it has an internal fan, the interior light that actually shows what’s in the fridge and it comes with a full set of shelves (unlike the RMD8505). The 3 star freezer is a pullout drawer, making it easier to pack and access food, and it is cold enough for storing ice cream! I was concerned about the noise it might make but it hasn’t woken us up. The cost of it is significantly cheaper than the Dometic replacement (which I believe is a different size requiring modifications to the cabinet).

I wish I’d done this change a long time ago.

It uses about 45Ah over 24 hours. I have 210Ah of LiFePO4 (2 x Fogstar 105Ah), 240W solar, 30A B2B (Votronic VCC 1212-30). So far, so good.

I will be posting some Dometic fridge/freezer items for sale over the next few days.

View attachment 812236 View attachment 812237 View attachment 812238 View attachment 812239 View attachment 812240 View attachment 812241 View attachment 812242 View attachment 812243 View attachment 812245 View attachment 812246
I have the same fridge it’s fantastic you can set the freezer to -6 -12 or -18 you can also turn the freezer off and just run the fridge on a lot less amps.have you tried the night setting that uses less amps and it’s near silent.
 

WESTY66

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Jun 17, 2017
6,335
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All the gear, and no idea!
Uncle Lenny HB we need to have a chat about putting one of these in my van when the season is over😉😁😁😁

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