April 1998
27
RS5290000 Rev. 0
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.
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 230 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
*
pad to activate control panel.
2.
Simultaneously press and hold
Max Cool and
Display Off pads for 3 seconds.
Forced Compressor Start
1.
Press
*
pad to activate control panel.
2.
Simultaneously press and hold
Fast Freeze 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 230 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.
DANGER
!
To avoid electrical shock, personal injury or death,
avoid contacting high voltage parts. Disconnect power
to unit and discharge capacitor before handling.
DANGER
!
To avoid electrical shock, personal injury or death,
avoid contacting high voltage parts. Disconnect power
to unit and discharge capacitor before handling.
Electronic Functional Description
