RE: Blown Fuse
On the older model Danfoss compressor systems there are two fuses, there is a fuse on the Danfoss electrical module and a fuse or circuit breaker at the battery main buss. If the 15 amp fuse or breaker blows at the battery buss and the 15 amp fuse on the module does not, the problem is in the boat wiring not the refrigeration unit. When the module fuse blows 90% of the time the module is faulty. Before replacing the module the compressor needs to be checked with an ohm meter. If the compressor tests OK, I would contact Adler Barbour or Frigoboat as they both still sell those four pin modules. These companies I believe will also test your old unit to confirm if it is truly a failed unit. Adequate heat removal of the complete condensing unit is important, if the unit is in the engine room it must then draw its cooling air from a cooler area. Adler Barbour sells a duct kit for remote condenser air cooling or you can make your own.
On the older model Danfoss compressor systems there are two fuses, there is a fuse on the Danfoss electrical module and a fuse or circuit breaker at the battery main buss. If the 15 amp fuse or breaker blows at the battery buss and the 15 amp fuse on the module does not, the problem is in the boat wiring not the refrigeration unit. When the module fuse blows 90% of the time the module is faulty. Before replacing the module the compressor needs to be checked with an ohm meter. If the compressor tests OK, I would contact Adler Barbour or Frigoboat as they both still sell those four pin modules. These companies I believe will also test your old unit to confirm if it is truly a failed unit. Adequate heat removal of the complete condensing unit is important, if the unit is in the engine room it must then draw its cooling air from a cooler area. Adler Barbour sells a duct kit for remote condenser air cooling or you can make your own.