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Test 04:
Surface Temperature Sensor Test
The display shows the actual temperatures in degrees
Fahrenheit on the cooling surfaces, freezer to the left
and fresh food to the right. The displayable range is
from -9° F to 59° F. Temperatures below or above this
range will be displayed as “Lo” and “hi” respectively.
An open circuit to a sensor will be displayed as “--”.
The out of range indications in the temperature display
(“hi” and “Lo”) indicates that temperature is out of mea-
surement circuit range. However, these indications may
remain for some time after temperature is within range
again. This depends on that the temperature display is
ltered with long time constants. To reset the temperature
lter memory, switch “OFF” and “ON” again. Now the tem-
perature indications will start from the actual value.
Test 05:
Door Switch Sensor Test
The display shows the actual status for the doors.
“CL” stands for door closed and “OP” stands for door
open. The freezer door is to the left and the fresh food
door is to the right. A depressed fresh food door sen-
sor will not darken the display in the “Service mode”.
Test 07:
Test of the Defrost Heating Element in the
Fresh Food Side
A disconnected or broken defrosting element in the
fresh food side results in the display “--”. A blown fuse
(F6) or blown overheating protection in the element
will also result in this display. Otherwise the display
shows “On” and the element is energized. A fault here
is also indicated with “Er 12” during normal opera-
tion.
Note: Replacing a blown fuse while in this test will not
clear the “--” display. Restart the “Service mode” to re-
fresh the display message. Repeatedly press the SET
button until this test is reached again.
Test 08:
Test of the Defrost Heating Element in the
Freezer
A disconnected or broken defrosting element in the
freezer results in the display “--”. A blown fuse (F4) or
blown overheating protection in the element will also
result in this display. Otherwise the display shows
“On” and the element is energized. A fault here is also
indicated with “Er 11” during normal operation.
Note: Replacing a blown fuse while in this test will not
clear the “--” display. Restart the “Service mode” to re-
fresh the display message. Repeatedly press the SET
button until this test is reached again.
Test 09:
Test of the Defrost Heating Element in the
Drain Tube/Tray
A disconnected or broken defrosting element in the
drain tube/tray results in the display “--”. A broken
fuse (F6) also results in this display. Otherwise the
display shows “On” and the element is energized. A
fault here is also indicated with “Er 13” (or “Er 12” in
case of a blown fuse) during normal operation.
Note: Replacing a blown fuse while in this test will not
clear the “--” display. Restart the “Service mode” to re-
fresh the display message. Repeatedly press the SET
button until this test is reached again.
Test 10:
Test of the Heating Element in the Door
Frame and Ice-Maker Waters Supply Line
This test only switches on the loads. A disconnected
or faulty load will not be detected. The display there-
fore always shows “On” here. A faulty heater will not
be detected at this test. A manual check of the heat-
ers will be necessary to verify they are hot.
Test 06:
120 Volt AC Test
If AC voltage is available, the display will show “On”
and the AC relay will be activated so that the heater
in the cooling unit is energized. If AC is not available,
the display will show “no AC” and the relay will not be
activated. A blown fuse (F5) will result in a “no AC”
display. However, a faulty heater will not be detected
at this test. A manual check of the heaters will be nec-
essary to verify they are hot.
Note: Replacing a blown fuse while in this test will not
clear the “no AC” display. Restart the “Service mode” to
refresh the display message. Repeatedly press the SET
button until this test is reached again.
Test 11:
Test of the Fan in the Fresh Food Side
An open circuit to the fan in the fresh food side will
result in the display “--”. Otherwise the display will
show “On” and the fan is started. A fault here is also
indicated with “Er 15” during normal operation.
Note: Correcting this problem while in this test will not
clear the “--” display. Restart the “Service mode” to re-
fresh the display message. Repeatedly press the SET
button until this test is reached again.
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