Norcold DC440 - Trouble Shooting - Procedure C; Power Supply Output Voltage Measurement

5
Power Supply Output Voltage
Power Supply
Failure
Change
Power Supply
Normal
See Procedure D
15 - 25
V AC
Measure voltage
between A & B
at the compressor
Below
15 V AC
0 V AC
Power Supply
Failure
Power Supply
Failure
Remove Power
Supply
Measure voltage
between A & B
at the compressor
ART01196
Check F3 fuse
on circuit board
Ohms:
Replace Power
Supply &
Cooling Unit
0 Ohms:
Replace
Power Supply
Trouble Shooting - Procedure C
Figure 3 - Measuring Power Supply
Output Voltage
A
A
F3 Fuse
B
Figure 4 - DE Models only - F3
Fuse Location
Figure 4A - DC Models only - F3
Fuse Location