© 2010 Viking Preferred Service
15
Diagnostics
Electronic Control Features
The Side-by-Side model has a dispenser interface that controls both product cooling and the dispensing
system. The product cooling diagnostics are first followed by the dispensing diagnostics. The cooling
portion of the electronic control controls the temperatures in the refrigerator and freezer compartments
independently, delays the operation of the evaporator fan, and pulses the defrost heater. The fan delay and
pulsed defrost features are controlled in the following manner:
1.
Evaporator Fan Delay
– The electronic control delays the evaporator fan from coming on for 60 seconds
after the compressor has turned on, and the evaporator fan stays on for 90 seconds after the compressor
has turned off.
2.
Pulsed Defrost Heat
– During the defrost cycle the heater is energized continuously for the first five
minutes. It is then cycled off for 60 seconds and on for 120 seconds. This on/off cycle is repeated until
the bi-metal open or the maximum defrost time (21 minutes) is reported.
Note:
The dispensing portion of the electronic control controls the dispenser user interface and functions
related to dispensing ice and water
Refrigerator Cooling On/Off
Press both 3 sec