February 1998
15
12074208
3.
If terminal 7 on high voltage board changes with
opening and closing of door, orange wire in low
voltage harness is broken (check for continuity
between pin 7 on high voltage board and pin 10 on
low voltage board) or low voltage board needs
replacing.
1.
Check for line voltage on terminal E8 on high
voltage board. With freezer door open, reading
should be 115 VAC. With door closed, reading
should be approximately 0 VAC. If voltage does not
change with light switch and light switch is turning
light off and on, violet/white wire is broken between
switch and high voltage board.
2.
Check for voltage on pin 7 on pin connector of high
voltage board. Output voltage should toggle with
toggling of light switch. If it does not toggle, high
voltage board needs replacing.
3.
If voltage on pin 7 on pin connector on high voltage
board changes with opening and closing of door,
orange wire in low voltage harness is broken (check
for continuity between pin 7 on high voltage pin
connector and pin 10 on low voltage board) or low
voltage board needs replacing.
Electronic Testing
Electronic Testing Mode
Forced Defrost Start
1.
Press
Display On pad to activate control panel.
2.
Simultaneously press and hold
Max Ref and
Display Off pads for 3 seconds.
Forced Compressor Start
1.
Press
Display On pad to activate control panel.
2.
Simultaneously press and hold
Max Frz pad and
Display Off pad for 3 seconds.
Open Thermistor Detect
Alarm sounds and freezer or refrigerator indicator light
shows and temperature indicators 4 through 7 will turn
on in sequence if either thermistor circuit opens. Refer
to Temperature Control Operation Section and
Electronic Testing Section.
1.
Press
Alarm Off pad to turn off alarm.
2.
Alarm will retest for normal operation. If condition
has not been corrected, alarm will sound again.
Evaporator Fan Suppression
The evaporator fan will turn off every time either
refrigerator or freezer door is open.
To test if this function is operating:
1.
Perform forced pull down procedure as noted above
–evaporator fan should be on.
2.
Open the refrigerator or freezer door–the fan should
turn off.
3.
Push the light switch off–the evaporator fan should
start.
If fan does not toggle off and on when refrigerator light
switch is turned off and on and it has been determined
evaporator fan motor is operational, perform following
tests to determine failure:
1.
Check for line voltage on terminal E7 on high
voltage board. With refrigerator door open
(refrigerator light ON) reading should be 115 VAC.
With refrigerator door closed (refrigerator light OFF)
reading should be approximately 0 VAC.
If voltage does not change with light switch and
light switch is turning light off and on, red/white wire
is broken between switch and high voltage board.
2.
Check for voltage on terminal E7 on high voltage
board. Output voltage should toggle with toggling of
light switch. If output voltage does not toggle, high
voltage board needs replacing.
DANGER
High Voltage
DANGER
High Voltage
