Fuse Replacement Procedure
The refrigerator’s electrical circuits are fused to protect them from a circuit overload. If the "Diagnostic Codes and Their Meaning" section indicates that the refrigerator fuse is blown, follow the replacement procedures below.
1.Turn the refrigerator to "OFF".
2.Disconnect the AC power cord from the wall receptacle.
3.Disconnect the AC power cord from the
power board cover at the rear of the refrigerator from the power board cover.
4.Disconnect the 12 volt DC supply wires from the power board cover (A).
5.Remove the ignition wire/sense wire from the power board cover.
CAUTION . Failure to follow this procedure can lead to personal injury or property damage.
Maintenance
6.Remove the three screws which secure the power board cover to the refrigerator, pull cover away. Do not operate refrigerator without power board cover.
7.For
Note! Remember how the wires were removed. Reattach wires to the same location as they were when removed.
1.Blue wire from power board connects to termi- nal #7 of extention board.
2.Red wire from power board connects to termi- nal #9 of extention board.
3.Black wire connected to refrigerator chassis connects to terminal #8 of extention board.
5 Amp Glass Cartridge
AC Fuse
Mounting Screw
AC Supply
Cord
12 VDC Supply 
Wires 
+ 
Grd. Ignition/Sense Wire
2
3 Amp
(Control Fuse)
1
4. Yellow wire of the DC heater connects to termi- | 3 | 4 |
nal #6 of the extention board. |
| |
|
|
8. Remove the two screws which secures the ex- tention board cover (B) to the refrigerator. Pull
cover away from the refrigerator. Do not operate refrigerator without cover.
9.. Replace blown fuse with the specified fuse listed in the WARNING above.
20 Amp
Fuse
Models Only)
WARNING A circuit overload can result in an electrical fire when incorrectly sized fuses are used. To prevent a possible electrical fire, follow the fuse specifications given below:
DC Control Circuit - 3 amp (purple)
DC Heater Circuit - 20 amp (yellow)
AC Circuit - 5 amp glass cartridge
10. If a fuse continues to blow, contact your dealer or a Norcold Service Center for corrective action.
12
