Norcold N82X User Manual
www.norcold.com/cda
45
N6XX/N8XX Models
Refrigerator Service Manual
ELECTRONIC COMPONENTS
Inputs, outputs, monitoring, and diagnostic functions
are managed and controlled by the power board.
Inputs, outputs, monitoring information, and diagnostic
functions are communicated through the optical control
assembly. The wire harness interfacing the power
board with the optical control assembly is "foamed"
into the cabinet. Wiring pictorials and schematics can
be found on page 46, 47 and 48.
are managed and controlled by the power board.
Inputs, outputs, monitoring information, and diagnostic
functions are communicated through the optical control
assembly. The wire harness interfacing the power
board with the optical control assembly is "foamed"
into the cabinet. Wiring pictorials and schematics can
be found on page 46, 47 and 48.
Power Board
The power board is seated on an insulated base to
prevent the printed circuit from making contact the
refrigerator's cabinet metal plate. Power boards seated
in bases are shown in Figure 33.
prevent the printed circuit from making contact the
refrigerator's cabinet metal plate. Power boards seated
in bases are shown in Figure 33.
Two, self-tapping 1/4 inch hex head screws hold the
power board and base in place. The power board cover
is held by three self-tapping 1/4 inch hex head screws.
The power board cover and external connections are
shown in Figure 34.
power board and base in place. The power board cover
is held by three self-tapping 1/4 inch hex head screws.
The power board cover and external connections are
shown in Figure 34.
Removal–Power Board
1.
1.
Turn OFF refrigerator.
2.
Turn OFF RV DC power to the refrigerator.
3.
Disconnect DC power supply wires from power
board terminals 12 VDC and 12_VGND1.
board terminals 12 VDC and 12_VGND1.
3-way refrigerators (AC/LP/DC)
• Disconnect the DC heater wires from terminal
FLP/DC HEAT and DC_HT GND.
4.
Unplug the AC power cord from the RV AC
receptacle.
receptacle.
5.
Unplug the AC cord from the power board.
6.
Disconnect the gas valve wires from power board
terminals GV and GV_GND.
terminals GV and GV_GND.
7.
Disconnect the spark sense electrode wire.
N64XIM/N84XIM (ice maker)
• Loosen the water valve bracket, then move the
bracket/water valve assembly out of the way.
8.
Remove the three, 1/4 inch self-tapping hex head
screws from the power board cover.
screws from the power board cover.
9.
Remove the power board cover.
10. Disconnect the AC heater wires from power board
terminals AC_HI and AC_LO.
11. Disconnect the wire harness connector from power
board, terminal P1.
12. Remove two, 1/4” hex head screws, then remove
the power board along with its base.
N641/N841: 3-Way Power board
5 A Fuse
AC Power
(F3)
AC Power
(F3)
Wire Harness
Connector
(P1)
Connector
(P1)
5 A Fuse
DC Power
(F1)
DC Power
(F1)
AC Heater
Terminals
Terminals
30 A Fuse
DC Power
(F1)
DC Power
(F1)
DC Heater
Terminals
Terminals
N641/N841: 2-Way Power board
5 A Fuse
AC Power (F3)
AC Power (F3)
Wire Harness
Connector (P1)
Connector (P1)
5 A Fuse
DC Power (F1)
DC Power (F1)
AC Heater
Terminals
Terminals
N62X/N82X Power board
5 A Fuse
AC Power (F3)
AC Power (F3)
Wire Harness
Connector (P1)
Connector (P1)
5 A Fuse
DC Power (F1)
DC Power (F1)
AC Heater
Terminals
Terminals
N61X/N81X Power board
5 A Fuse
AC Power (F3)
AC Power (F3)
Wire Harness
Connector (P1)
Connector (P1)
5 A Fuse
DC Power (F1)
DC Power (F1)
AC Heater
Terminals
Terminals
Figure 33. N6XX/N8XX Power Boards