[Czechmate Au]

I see now. SUC is the name of the fridge .

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[Czechmate Au]

Great stuff Mr fixbear,

Thank you.

The fridge is running ok 2nd day now. It is not perfect like before but running so far. Just waiting if temperature will go up hi again. Because when it stayed at 24c it lasted the whole night . When I came back the next day it was just bloody warm inside and had to turn it off. If it starts to get warm again I will definitely ohm the thermistor. But there was one thing I have noticed the first time I checked the coils. 3 rubber looking square mats under the coil. I think it has something to do with the water and coils ? But the 3rd mat was way off the alignment with the other two. I just pushed it under the coil right in the corner where it used to be icy. That was weird as nobody opened that part of fridge since I bough it 7 years ago. Also I checked all wires from the controller for continuity with ohm meter. I touched one wire with the black cable and different wire with the red cable and all the wires made sound plus numbers came up as well. But the brown wire (fan) had no sound and no numbers were coming up. Then I followed the brown cable to this box full of other wires and checked both ends of the brown wire for continuity and it made sound. Also checked the connectors with red cable which goes to fans and they were all connected. So now I still get the aD alarm all the time but the fridge works so far. 2 new Dixell controllers have identical wiring on the diagram as the original one. I'm not sure what model SUF-1000 or SUC-1000 are you reffering to. Is it the Fridge or Dixell controller? I have attached the fridge wiring diagram. Thanks mate

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[Czechmate Au]

Good day Mr fixbear,

I appreciate your response very much. Thank you for taking your time with my post. I know there is 1 Thermistor hanging on the coil (black wire attached to coil) but have to double check that again. I will let you know. I'm not sure if the fridge has defrost heater but I know there is some kind of automatic defrost going on. I was thinking about the 2 fans as well as it would be logical thing to do, because of the fan icon displayed on controller. Or I haven't noticed that before. When I open 2 top doors together or even one by one and hold the switches, both fans turn on and also turn off depends on the switch position of closed or open door. So that seems working.Also lights turns on and off when open and close door. This 4 door fridge has 2 door switches on top doors only. I already replaced one switch before, few weeks back, because of that (dA) Alarm. But only the door , which is used the most. These switches are so hard to take out of the unit.I had to literally destroy the switch to be able to take it out of the front of the fridge. The back side have steel caps glued to the fridge and I was unable to remove it. These caps cover wires and the door switch from inside. The two fans inside don't make any weird or loud noise.I keep checking them how they spin. Both are very fast and also stop together at the same time (not sure how else to check the fans). Now about the controller. I wired the sensors exactly the same as on the original controller (just tried to swap the fan wire around but no more) Also one note. The original controller same brand Dixell and number, works still well with the fan wire (brown color cable) connected to number 2 on the controller. But the fridge temperature just keeps jumping excessively up and down from 24c to 4c and then back with 1 or 2 hours. I set the temperature to 3c in the set menu Hy. The fridge temperature inside is about 3-4 c but on the controller display shows 5c sometimes 6c. The reason I bought new controller was I thought it is broken, because of the temperature jumps. Do you think the thermistor could be faulty? I will check soon how many thermistors is inside . Also I think the iced up tube in the corner could happen after I opened the top lid to get to see the fans and coils. Maybe I didn't tight up the lid screws enough and warm air got inside. Now I don't see any ice build up anymore. This fridge is one BIG headache haha. But I really would like to find out was the problem is. The fridge brand is (Tropical Thermaster). I have attached pictures as well. I hope it all make some kind of sense. Thank you so much for your help Mr fixbear.

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