No Lights; Lights Stay On When Door Is Closed; Door Not Able To Close Completely; Door Uneven - Sub-Zero UC-24 series Service Manual

Troubleshooting Guides
PROBLEM
Q. No Lights
R. Lights Stay ON when Door is
Closed
S. Door Not Able to Close
Completely
T. Door Uneven
#7003933 - Revision B - November, 2007
Under Counter (UC-24) Series
POSSIBLE CAUSE
No power to unit
Unit switched OFF
Unit in Sabbath Mode
Defective or loose light bulb(s)
Light Switch Disconnected or Defective
Lighting System Wiring Disconnected or
Defective
No Power From Control Board
(NOTE: See Unit in Sabbath Mode above.)
Accent Lights Switched ON
(Model UC-24B ONLY)
Door Ajar
a. Food product obstruction
b. Door Closer Defective
Faulty Light Switch
Food Product Obstruction
Door Closer Defective
Unit Not Level
8-14
TEST / ACTION
Check power to unit, plug unit in or switch
supply circuit breaker ON.
Switch unit ON, press POWER key.
Exit Sabbath Mode.
Install a known good light bulb.
Check wire connections at light switch.
Reconnect/repair. Check for AC Voltage to
and from light switch. Replace switch if
defective.
Check continuity from light sockets to
switch. Reconnect/repair or replace defec-
tive components.
Check for AC Voltage from control board.
Replace board if defective.
(NOTE: See Unit in Sabbath Mode above.)
Switch Accent Lights OFF
a. Move obstruction.
b. Replace door closer.
Check operation of light switch, lights off
when switch is depressed. Replace switch if
defective.
Move obstruction.
Replace door closer.
Check levelness of unit. If un-level, turn lev-
eling legs counterclockwise to raise unit or
clockwise to lower it.