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Service Procedures
Adjust Door Open Alarm delay
While in Mode B, press and
release "ALARM OFF" one time,
this will result in "DOOR OPEN"
illuminating on the display along
with the current numeric value in minutes that
the delay is set at. Factory default for this
adjustment is 3 minutes. Range is 1 to 20
minutes in 1 minute increments.
The duration is adjusted using the
"HIGHER and LOWER" pads.
Adjust Compressor Dwell Time
This adjustment is not a field adjustment and
should not be performed by technicians. This
is a factory only adjustment.
If you see "Cdt" in the display, immediately
exit Mode B by holding "ACTIVATE
CONTROLS" for three seconds until you get
three audible beeps. Return to your previous
actions.
Adjust Compressor High Frequency
This adjustment is not a field adjustment and
should not be performed by technicians. This
is a factory only adjustment.
If you see "CHF" in the display, immediately
exit Mode B by holding "ACTIVATE
CONTROLS" for three seconds until you get
three audible beeps. Return to your previous
actions.
36
Adjust DC Fan Cycling On Time
This adjustment is not a field adjustment and
ALARM
should not be performed by technicians. This
OFF
is a factory only adjustment.
If you see "dCo" in the display, immediately
exit Mode B by holding "ACTIVATE
CONTROLS" for three seconds until you get
three audible beeps. Return to your previous
actions.
HIGHER
Adjust DC Fan Cycling Off Time
LOWER
This adjustment is not a field adjustment and
should not be performed by technicians. This
is a factory only adjustment.
If you see "dCF" in the display, immediately
exit Mode B by holding "ACTIVATE
CONTROLS" for three seconds until you get
three audible beeps. Return to your previous
actions.
Exiting Mode B
To exit Mode B and retain any changes
made in system up to this point you
must press and release
"ACTIVATE CONTROLS" one
time, the display changes to
"PrA". This signifies that the changes
were written to the eeprom and that
the system has left Mode B and
returned to Mode A.
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
B 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
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