Diagnostic Tests (Table 2); Communication Tests (0 2, 03 Or 0 4); Self-Test Temperature Control Panel (0 6) - mabe PSS21 Series Service Manual

Fridge
Freezer
screen
screen
2
0
0
3
0 4
0
6
0 7
1 0
1 1
1 2
1
3
1
4
1
5
1
6
1
7
Communication Tests (0 2, 0 3 or 0 4)
A communication test will display the test code while checking the communication. When the test is finished,
the freezer display will show a P (pass) or an F (fault) for 2 seconds. After 2 seconds, the screens will show
the test code. At this time, you can enter a new test code.

Self-Test Temperature Control Panel (0 6)

This test applies only to the temperature control board inside the cooler compartment. When the Temperature
Control Panel Self-Test starts, all the LEDs and numerical segments on the screen will light up. When the
SAFE THAW button is pushed, all 3 LEDs for safe defrosting should be turned off. When the QUICK CHILL
button is pressed, all 3 LEDs for quick cooling should be turned off. Continue this procedure for each pair of
LED / button on the screen. The coldest key is to turn off seven-segment LEDs.
The warmer key is to turn off the Adjustment LED for both the freezer and cooler compartments.
To exit the Temperature Control Panel Auto-Test, both refrigerator temperature and adjustment keys must
be pressed simultaneously for 3 seconds. This can be done at any time to exit the test.
Table 2. Diagnostic Tests
Mo
de
Communication of the control
panel of temperature to the main
control panel
Communication of the
temperature control panel to the
board disp.
Communication of the board
disp. main control board
Self-test temperature control
panel
Self-test of the control system
and sensor
Open shock absorber
Speed fan test
100% running time
Between pre-cooling
Defrost entity
Reset fridge
Out of Test Mode
C/F Degrees
P on the CG screen if it is OK
F on the CG screen if it is not OK
P on the CG screen if it is OK
F on the CG screen if it is not OK
P on the CG screen if it is OK
F on the CG screen if it is not OK
See Self-Test Temperature Control Panel on page 32.
See Self-Test Control and Sensor on page 33.
Shock absorber will open, brief pause and then close.
Each fan works for 10 secs. then for
This mode operates the sealed system 100% of the time
for 1 hour.
This places the freezer in the pre-cooling mode.
This will put the refrigerator in the defrost mode. If the
cabinet is not cold when it is run, this mode can do it
extremely quickly. The cooler will return to normal
operation by itself.
It causes a readjustment of the system.
It causes the system to exit the test mode and readjust
the temperature control panel.
Refrigerator temperature adjustment keys can be used to
change the display from F to C or C to F.
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