Adler Barbour DCM-12 blown fuse

[Paul Higgins]

I have a Adler Barbour Model DCM-12. It was working great then on a long cruise the fuse blew. I replaced the fuse but it still does not work, even the fan does not turn. I jumpered straight to the fan wires and it did work. I don't see any overload switches so I think the Danfoss control module with all the electronics on it may be shot. Can you think of any other tests I can do to be sure? Also, I think it may be too hot where it is which is in the port locker and it is open to the engine compartment. I know there are fans you can get to cool the unit. If I get one, should I be cooling the compressor or just provide cool air to the evaporator? Thanks

 

[Richard Kollmann, Kollmann Marine Inc.]

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.