Figure 8

Maintenance

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.

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 3-Way models, disconnect the supply wires from the extention board (B) as shown in Figure 8.

Note! Remember how the wires were removed. Reattach wires to the same location as they were when removed.

5 Amp Glass Cartridge

3 Amp Blade-Type Fuse

AC Fuse

(Control Fuse)

 

Mounting Screw

AC Supply

Cord

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.

12 VDC Supply

Wires

+

1

Grd.

Ignition/Sense

 

Wire

 

2

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 extention 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 Blade-Type

Fuse (3-Way

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) blade-type automotiveDC Heater Circuit - 20 amp (yellow) blade-type automotiveAC Circuit - 5 amp glass cartridge

10. If a fuse continues to blow, contact your dealer or a Norcold Service Center for corrective action.

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