Constant Evaporator Fan Mode; Plant Mode - Viking VCRB5301 Service Manual

Service Procedures

Constant Evaporator fan mode

This mode only applies to All Refrigerator
units and is ignored by any other unit
configuration.
While in Mode C , press and hold,
"ALARM OFF" for three seconds,
the display will illuminate "CEF".
Pressing and releasing "ALARM
OFF" will toggle this condition "ON and OFF"
.
Turning this setting on will cause the evaporator
fan output to always be on when the door is
closed. When the door is opened it will activate/
deactivate according to the temperature
selected and not having reached cut off. If
Sabbath mode is enabled the fan will not shut
off.
32

Plant mode

This adjustment is not a field adjustment and
should not be performed by technicians. This
is a factory only adjustment.
If you see "Pt" in the display, immediately turn
power switch to OFF. Turn power back on and
ALARM
OFF
start over.
To exit Mode C and retain any changes
made in system up to this point you
must press and release
"ACTIVATE CONTROLS" one
time, the display changes to
"Prb". This signifies that the
changes were written to the eeprom
and that the system has left Mode C
and returned to Mode B.
The other way to ensure changes
have been written into the eeprom
is to press and hold "ACTIVATE
CONTROLS" for three seconds and
you will get three audible tones along
with a normal temperature display.
This indicates that you have left Mode
C and returned to normal operation.
Failure to do this will cause system
to time out after 10 minutes and any
changes will be lost.
ACTIVATE
CONTROLS
©2012 Viking Preferred Service