Ac Power Requirements; Ac Heater & Ac Heater Circuit Fuse; Power Board Ac Power Cord - Norcold N109X Series Service Manual

AC Power Requirements

Electric shock hazard! The refrigerator receives
power from more than one source. Unplug the ac
cord from the RV AC receptacle before servicing
electrical or electronic components.
AUTO AC and AC-Manual Mode operation require 108
to 132 volts. AC power to the power board and the ice
maker must be supplied through a 2 pole/3 wire/20 amp
grounding type receptacle.
aC heater
Do not wire the heater direct! Wiring the heater
directly bypasses control, which creates the
potential for an electrical fire.
The AC heater, see Figure 25, is a cartridge type heater.
The heater is rated for 300 watts/2.5 amps @ 120 volt
AC. Heater resistance is 45 to 51 Ohms at ambient
temperature. The location of AC heater is shown in
Figure 31, page 34.
Stop bead
figure 25. aC heater
When there is poor cooling in AUTO AC or AC Manual
Mode is experienced:
a. Make sure AC voltage input to the power
board is 108 to 132 volts.
b. Measure heater amp draw and heater
resistance,
c. Replace heater if resistance is out of range.
NOtE
Heater resistance must be measured at ambient
temperature.
Refrigerator Service Manual
WARNING
WARNING
black wire leads
When replacing the AC heater make sure the stop bead
rests fully against heater tube rim. Figure 25 shows the
location of the stop bead.
aC heater Circuit fuse
The AC circuit fuse is a fast acting 5 amp
type. It is on the power board, terminal F3.

Power board aC Power Cord

The following warning is presented on the ACcord
and should be strictly followed: "This appliance is
equipped with a three-prong (grounding) plug for
your protection against shock hazards and should
be plugged into a properly grounded three-prong
receptacle. Do not cut or remove the grounding
prong from this plug."
The power board is supplied AC power through a black
AC power cord. See Figure 26. Do not modify or cut the
cord's grounding prong. Always make sure that ground
wire (green wire) is tightly fastened to the refrigerator
cabinet metal plate. The AC cord's plug at the power
board end must be connected to the power board with
the rounded side facing away from the power board.
Power board
connection
Ground wire
figure 26. Power board aC power cord
" x 1 " AGC
/ /
1 1
4 4
WARNING
29
N109X Models