Troubleshooting - GE ZIS360NM Technical Service Manual

Caution: When assembling the top panel, use care to prevent pinched wires.

Troubleshooting

Use this diagnostic flowchart if the Climate Control Drawer control panel and display are not operating
properly.
If the problem is drawer temperature and the control panel and display appear to be operating normally,
check the thermistor, damper, fan, and heater first.
If the actual drawer temperature displayed is incorrect, suspect the thermistor and main control board.
Check
communication
using diagnostic
mode. NO
Communication
pass?
YES
Replace Climate
Control Drawer
control board.
YES
Replace Climate
Control Drawer control
board. If problem is not
corrected, replace the
main control board.
Is a temperature or time
displayed or are any
No display
indicator lights illuminated
or lights
on the Climate Control
Drawer control panel?
Display and/or lights
Replace Climate
Control Drawer
control board.
Check for continuity on
data circuit between
J4-1 and Climate Control
Drawer control board YES
connector terminal 5.
Circuit OK?
NO
Repair circuit.
Disconnect connector J4
from main control board.
Check for 12 VDC at
NO
main control board
between J4-2 and J4-3.
12 VDC present?
YES
Reconnect connector J4 to
main control board.
Check for 12 VDC at J4-2 at
main control board between
J4-2 and J4-3.
12 VDC present?
YES
Disconnect connector from Climate
Control Drawer control board.
Check for 12 VDC at the Climate
Control Drawer control board
connector between terminals 3 and 5.
12 VDC present?
9-Pin Connector
Behind Climate
Control Drawer
ORANGE
– 37 –
Replace main
control board.
Replace Climate
NO Control Drawer
control board.
Open wiring between Climate
NO Control Drawer control board and
main control board.