Hi All
So I have this portable refrigerator. It has a Danfoss BD35F compressor with 101N0210 control unit. The fridge has a 12/24V switch and I have only used it with 12V. When connecting it to a 12V car battery it runs perfect, never any problem. But when using it with the 230VAC power supply shipped with the fridge it doesn't run. That is 12V 4A unit.
So I have tried with three other different power supplys, providing 5A, 5A and 6.5A, it doesn't work with any of them. The compressor starts but you can immediately hear it is loosing revs and then it stops after a few seconds. I have cranked one of the power supplies up to 14V but it doesn't help, measuring the voltage when it tries to start, it drops to about 6-7V.
When connecting it to a 12V car battery it runs perfect, I have measured the current and it takes about 3.3-3.4A when running. Just when it starts I can see it take about 4.1A, but I have only used a digital multimeter without logging functionality.
In the Control Unit (101N0210) I have removed and measured all large capacitors (four of them), none of them faulty. One of the small ones slightly low so both small where replaced, but it didn't make any difference.
What is the problem here? Why does my fridge not run on a power supply?
Thanks for your help!
So I have this portable refrigerator. It has a Danfoss BD35F compressor with 101N0210 control unit. The fridge has a 12/24V switch and I have only used it with 12V. When connecting it to a 12V car battery it runs perfect, never any problem. But when using it with the 230VAC power supply shipped with the fridge it doesn't run. That is 12V 4A unit.
So I have tried with three other different power supplys, providing 5A, 5A and 6.5A, it doesn't work with any of them. The compressor starts but you can immediately hear it is loosing revs and then it stops after a few seconds. I have cranked one of the power supplies up to 14V but it doesn't help, measuring the voltage when it tries to start, it drops to about 6-7V.
When connecting it to a 12V car battery it runs perfect, I have measured the current and it takes about 3.3-3.4A when running. Just when it starts I can see it take about 4.1A, but I have only used a digital multimeter without logging functionality.
In the Control Unit (101N0210) I have removed and measured all large capacitors (four of them), none of them faulty. One of the small ones slightly low so both small where replaced, but it didn't make any difference.
What is the problem here? Why does my fridge not run on a power supply?
Thanks for your help!