mabe GSS21 Series, Service Manual

Page: 32 / 65

Table 1. Causes of
Failure
Freezer bin Cooler bin
Above
15°
Fanrenheit
High resistance thermistor freezer
Low resistance thermistor
evaporator Failure condenser fan
Failure evaporator fan
Heater defrosting locked
Fail in door switch
Main control board failing
Faulting wiring
Open dispenser lid
Leaking in door packaging
Half-closed door
Fail sealed system
Above
50 °
Fahrenheit
High-resistance in the thermistor of
the cooler compartment
Closed cushion
Failure cooling fan
Evaporator fan failure
Failure door switch
Main control board failing
Failed wiring
Leak in the door package
Half-closed door
Normal Cycle
(entre 14° y -14°
Fahrenheit)
Normal Cycle
(entre 49° y 33°
Fahrenheit)
Below -
15°
Fahrenheit
Closed damper closed
Low-resistance in the circuit of the
thermistor of the freezer
Main control board failing
Below
32°
Fahrenheit
Open locked shock absorber
Low-resistance in the sensor
circuit of the cooler compartment
Main control board failing
Enviroment temperature below 60 °
Shock absorber failing
Auto-Diagnostics
To enter the Auto-Diagnostic mode, both screens of the temperature control panels should be illuminated. A screen can
be illuminated by pressing an attached temperature adjustment button. When both screens are illuminated, adjust the
cooler and freezer temperature settings to 5. Simultaneously press and hold all 4 temperature adjustment buttons for
approximately 3 seconds. A 0 flashing on the refrigerator and freezer display will indicate that the refrigerator is in the
Auto-Diagnostic mode.
To do the self-diagnostic test, locate the test in Table 2, Diagnostic Tests.
For temperature control panels with single-digit displays, the COLD temperature setting knob will increment the numbers
upward and the ENVIROMENT temperature setting knob will increment the numbers downward. Use the freezer
temperature adjustment buttons to enter the test code number on the freezer screen. Use the refrigerator temperature
adjustment buttons to enter the test code number on the refrigerator screen. When a test code has been entered, the
screens will flash to confirm the test. Press the HOLD button for 3 seconds to start the test.
For 3-digit temperature control panels, the COLD temperature button will increase the numbers down and the enviroment
temperature button will increase the numbers upwards. Use the freezer temperature adjustment buttons to enter the
code number of the freezer screen. Use the refrigerator temperature adjustment buttons to enter the refrigerator's screen
code number.
After entering a test code, the screen will flash to confirm the test code. Press any button other than the temperature
adjustment button to begin the test.