Service Procedures; Program Modes; Program Mode A; Display Ref Temperature - Viking VCRB5301 Service Manual

Service Procedures

Program Modes

Program Mode A

Program mode A is entered by first
pressing and releasing "ACTIVATE
CONTROLS", then press and
release "FAST COOL" once and
within five seconds press and
release the following pads
in sequence, "HIGHER,
LOWER, HIGHER,
LOWER" You will hear an
audible three beeps and
the numeric display will
change to "PrA", see illustration
below.

Display REF Temperature

Press "REF TEMP" pad once to
display the value of the thermistor
temperature with the offset, no
filtering is applied to the display.
This readout will reflect instantaneous
temperature changes on the freezer
thermistor as shown in illustration, next
column.
24
ACTIVATE
CONTROLS
FAST
COOL
LOWER
HIGHER
LOWER
HIGHER
REF
TEMP

Defrost mode selection

Unit is shipped in Adaptive defrost mode,
this can be changed to Conventional defrost
mode using the following procedure while in
Mode A.
Press the "FAST COOL" pad once
to display the current defrost mode.
This will result in a display of "Add"
for adaptive or "Cnd" for conventional as
shown in the illustrations below.
At this point pressing and releasing the
"FAST COOL" pad will toggle between
adaptive and conventional defrost modes of
operation.
Conventional defrost time adjustment
(CRTD)
The conventional defrost is adjusted based
upon compressor run time between defrost
cycles (CRTD). This time can be adjusted
from between 4 hours (minimum) to 24 hours
(maximum) in one hour increments.
Conventional defrost must first be selected as
shown in previous step.
Even though the All Refrigerator doesn't
have a defrost system, the board can
still be programmed. The unit can be set
to conventional defrost in high humidity
areas and set for every 6 hours of CRTD.
This will cut down on frost issues.
©2012 Viking Preferred Service
FAST
COOL