Diagnostics And Service Information - GE ZIB240P Technical Service Manual

Diagnostics and Service Information

To Enter Service Mode:
Press keypads A, B and D simultaneously for 5 seconds.
Model Verifi cation
Upon entering Service Mode, mvv will be displayed, where m indicates unit model number and vv
indicates software version (see chart below). The software version cannot be changed in the fi eld.
Model No. (m)
1
2
3
Sabboth Mode
If SB is displayed, the unit is in Sabbath mode. Press and hold the two outer keys for 7 seconds to exit.
To select a diagnostic mode:
1. Use keypad A to increase and keypad B to decrease the diagnostic mode.
2. Press keypad D to enter that diagnostic system test.
3. Upon entering the diagnostic system test, the display code fl ashes three times at the normal fl ash
rate.
Service Mode Test Options
Diagnostic
Diagnostics
Mode
Showroom
01
Mode
Data
02 Communication
Check
06 Display Test
Model Select
Wine Reserve
Beverage Center
Double-Drawer
Description
Compressor, fans, and heaters are disabled. When fi rst entered,
displays "On" for 5 seconds and displays "OUt" as it exits
Service Mode. Next time entered, displays "OFF" for 5 seconds
and displays "OUt" as it exits Service Mode. Note: Flashes the
degree sign off every 10 seconds for 1 second while in showroom
mode. Exits showroom mode when unit is unplugged. Exit this
mode (back to Service Mode) by pressing keypad A, B, or D.
Data string sent from Power Supply Board (PSB) to Logic Board
(LB), back to PSB and checked for accuracy. Displays "P" if OK.
Displays "F" if problem is found.
The incandescent light, all LED's, and numeric segments will
illuminate for 5 seconds and then off for 1 second.
NOTE: Indicates keypad used only on some
models.
To Exit Service Mode:
Press keypads A, B and D simultaneously for 5 seconds or enter
Service Mode Option 1 6.
Model No. (m)
4
5
6
– 21 –
Model Select
Bar Unit
Fresh-Food
Outdoor/Indoor