Dometic CFX 50W (50L) Questions & Answers

Hi there, my CFX 50 runs on 240v, runs on 12 volt in emergency override (so the fuse is good) but it wont run in normal 12volt operation. The dual battery is currently sitting on 13.4 volts and the fridge is set to Low voltage shutoff. Any ideas / thoughts as to why it wont run would be greatly appreciated. P.s we are thousands of KMs from home.

I set the fridge to - 4 it never stays as that. Within a few hours it can drop to minus 29degrees Celsius. It has done since we first got it only been used a handful of times. Not sure what I'm doing wrong. Can u help.

Well opened the fridge to find everything frozen and the temperature saying 33’c.
Any help?

Will 14 volts. Damage the fridge in any way

My fridge freezer does not control to temp setting with compressor running all the time

My Waeco CFX 28 fridge/freezer does not go below -02 degrees despite being programmed at below -14. the engine is still running an orange light comes on and then a flashing red, then turns green and continues to run but does not fall below -02 degrees. Thanks.Amelia.

My Dometic CFX 50 will no work on 12 volts DC display not coming on and on 120 volts ac it continues to keep running again no display on to minus 50 and won’t shut off. Any ideas?

where can I find a diagram(manual for the compressor) or youtube vid showing how to replace/remove main pcb board as Ive heard that you can use an air can and some contact cleaner for an easy fix if your fridge only works on emergency override.Otherwise I will replace the main PCB board.
cheers

I have a CFX50 that starts ok in 240 & 12 volt.
Turning it on no green light comes on or Red error light.
Just a solid orange light.
The CFX50 begins cooling and reaches -22 then begins to come down in temp to around +5 then begins cooling again back up to -22.
Have tried it on normal & override positions no difference.
The Digital readout on Control PCB shows unreadable numbers ie: the numbers are not fully displayed.
When pressing the set button, can step thru the sequence and change tof C or Friday and Low Mediterranean High. BUT cannot set the Temperature mode
It is set on +10 but cannot set it.
It freezes the cabinet as said to -21.
I have ordered a new Upper Digital Control PCB to swap out this faulty PCB.
I have remove the Main PCB, disconnected the connector and cleaned with Electronic Spray Cleaner -reassembled AND CFX50 fires up and dies as described an the beginning of my questions.
Iso the PCB the likely cause of the hiccup??
Thank you in advance for your input & suggestion/s.

How do I remove the power control board in a 3 year old CFX-50.
The 12 volt plug has a connection problem and I suspect s dry solder. I have already tried a new power lead. It does come on but only once I find the right spot by jiggling the plug around. Inevitably it goes off when the fridge/plug gets the slightest movement.
Thanks

My four-year-old Waeco CFX 50 has recently started defaulting to -22° every time there is a power outage or disruption to power supply. If not noticed for awhile the exploding cans and bottles will get your attention. Is there a fix please?

Our fridge is 3 years old and used to work well, but started playing up in the last year or so. Replaced camper battery which we thought was the problem but still having the same issue with it cutting out and not cooling. Plugged into friends camper which was effectively cooling a cfx-75 and same problem, so doesn’t seem to be battery, although does work in the car with motor running and also on 240V. Is there a way of adjusting the cut off voltage, as it seems to be too high?

Should my weaco cfx 50 be goin on an off with the light goin from green 2 orange, was free camping an useing solar with a battery off it 2 run fridge, got home an plugged it in 2 main power an orange light was on but got 2 set temperature in no time it’s just over a year old now but has had this problem 4 a bite what should i do, a mate put thicker leads on his an fixed it but his is a cf 95?

Hi,
I have a Waeco CFX 50 set at 2 degrees as fridge on both sides which works perfectly on power but when just on battery (Engle) either travel or sitting raises to 10/11 degrees. The compressor keeps cutting off quickly with a thump. Any ideas as to why?

Hi, My CFX50 while in car manages to turn itself down to minus 22 while driving in sealed roads.
While it normally just sits in my shed on its bench set on minus 0.3 which it does not move.
Is there anything that could be loose that I could check.

Regards
Ricky

Hi,
We have a Dometic CFX-50 that is just under a year old. Quite often, when opening the lid, the interior light begins flashing continuously. Instructions say this warning should come on after 3 minutes. On this cooler, sometimes the light starts flashing immediately and will remain flashing on successive openings. (Just to check and see if it is still flashing.) 36-41 degrees is approximately the temperature cycle range.
Would you have any idea what the problem may be? The cooler is plugged in to 110v and is located on the floor inside our RV. The cooler has been used for less than a month total time since we purchased it from Amazon.
Thank you.
Art

I bought this unit about 3 years ago for my sailing boat which is based in Malaysia. The unit has worked pretty well until for some reason it stopped running on 240AC shore power. About 18 months ago. Anyway i have been using it off my 12V DC since then until a few days ago when my boat keeper reported that the temp display was showing 60C but frdge contents appear chilled. A few days later I asked him to check on the 200AH AGM house battery and it had fallen dramatically to 11.2V which is practically flat. It appears that the motor has been running 24/7 and has drained the batteries completely. The low voltage switch was either set too low or malfunctioned. Is the thermostat and the low voltage cut off switch one unit? BTW, managed to recover the two flat batteries and they are now fully charged but not risking connecting to the fridge as Im not there to monitor the situation.

I bought my CFX50 a month ago( Oct 16,2018 ). Used once for tailgating using the 120v AC connector. The 12v DC side is not working. How do I get this issue resolved.

Greg Proctor

Hi, my display is about 10-15 degrees out. I ran a test when set at 10 degrees it will freeze a bottle of water over night & the thermometer I placed in there was reading -3. Basically I can't use it as a fridge, only a freezer. Thermistor or a PSB issue? Thanx

Crew My CFX 50 fridge on borth 12v and 240 is taking several hrs to cool down and wont go cooler then 3 - 5 Degrees I have it set at -5. what could cause this onle 2 years old?