MrJim
Senior Member
- Joined
- Jan 23, 2015
- Messages
- 206
- Location
- USA
- Vessel Name
- Irish Miss
- Vessel Make
- Mainship 30 Pilot Rum Runner Classic
My refrigerator doesn't want to operate at the dock with the AC power connected, but appears to run fine on DC power. I was wondering if any of you have an idea of where the problem is. The refrigerator is a WAECO top loading unit. It has a Danfoss BD35F compressor with a Danfoss 101N0220 controller (not sure if that's what it is?) and a WAECO Mobitronic Type MPS-50 rectifier. The attached sketch shows my setup.
With AC power connected, the compressor will run for approximately 4 seconds and then shut down. After about 1 minute, it turns on again and runs for another 4 seconds and then shuts down. The cycle repeats itself. The refrigerator doesn't chill. I measured voltage at the rectifier output (the C+C- terminals) and it's providing 26+ Volts when this happens.
With the AC power disconnected but the DC power still switched on, the compressor will run continuously and the refrigerator appears to get cold. I measured voltage at the rectifier output and it's providing 12+ Volts.
Could the problem be with the rectifier? It appears to be doing what it's supposed to do. Could it be the compressor? It seems to run fine on 12V DC power. I wonder if that "controller" is the problem and if that can be replaced. If anyone has any ideas or experience with this type of issue, I'd appreciate any input!
With AC power connected, the compressor will run for approximately 4 seconds and then shut down. After about 1 minute, it turns on again and runs for another 4 seconds and then shuts down. The cycle repeats itself. The refrigerator doesn't chill. I measured voltage at the rectifier output (the C+C- terminals) and it's providing 26+ Volts when this happens.
With the AC power disconnected but the DC power still switched on, the compressor will run continuously and the refrigerator appears to get cold. I measured voltage at the rectifier output and it's providing 12+ Volts.
Could the problem be with the rectifier? It appears to be doing what it's supposed to do. Could it be the compressor? It seems to run fine on 12V DC power. I wonder if that "controller" is the problem and if that can be replaced. If anyone has any ideas or experience with this type of issue, I'd appreciate any input!