Service Procedures
©2012 Viking Preferred Service
37
ALARMS
There are five alarms that signify faulty conditions,
they will each be covered in detail.
1. High Temp Alarm
Freezer High Temp alarm
When the freezer temperature reaches the high temp
level (15
o
F) ,set in the EEPROM at factory, for a
predetermined time (3 hours), also set in EEPROM,
the "HIGH TEMP" indicator will come on and the
"FREEZER" indicator will flash. You will also get
a continuous audible alarm, consisting of a beep
pattern (ON - 0.5 sec, OFF 2 sec's).
If the condition(s) change and the units temperature(s)
are brought back within limits as described above,
the audible alarm will turn off. The "HIGH TEMP"
and the appropriate zone (Refrigerator or Freezer)
indicator will continue to operate as described above.
To cancel the audible alarm when condition first
occurs, press and release "ALARM OFF", this will
result in shutting off the audible alarm only. To clear
the "HIGH TEMP" and flashing zone light (FREEZER
), the temperature must be brought down below the
limit temperature as described in the appropriate
zone above. Then pressing and releasing "ALARM
OFF" once will clear the "HIGH TEMP" off the screen
and the zone indicator will stop flashing.
2. Open Thermistor Alarm
The controller will sense an open thermistor condition
within 15 seconds of power on.
Open Freezer Thermistor Alarm
When the control senses that the units' thermistor
is open, "oPn" is displayed on the control along
with the zone, "FREEZER". If the control was in
the Refrigerator zone when the condition occurred,
it automatically switches over to the faulty zone
("FREEZER"). You also receive an audible alarm
consisting of five beeps that occurs only one time.
The visual alarms as described above will continue
until the condition is corrected.
The unit will continue to execute temperature control
and defrost operations as required until the condition
is corrected. The control does this through software
programming, acting as if the cut-out temperature
is never reached in the faulty zone, temperature
control in the other zone is unaffected.
The visual alarms will reset by themselves within
15 seconds of the open thermistor condition being
corrected and temperature control reverts back to
normal operation.
Summary of Contents for Quiet Cool VCFB5301
Page 48: ...Schematic 48 2012 Viking Preferred Service 30 All Freezer Schematic Upper Section...
Page 49: ...Schematic 2012 Viking Preferred Service 49 30 All Freezer Schematic Lower Section...
Page 50: ...Schematic 50 2012 Viking Preferred Service 36 All Freezer Schematic Upper Section...
Page 51: ...Schematic 2012 Viking Preferred Service 51 36 All Freezer Schematic Lower Section...
Page 52: ...Wiring Diagrams 52 2012 Viking Preferred Service UPPER SECTION WIRING 30...
Page 53: ...Wiring Diagrams 2012 Viking Preferred Service 53 LOWER SECTION WIRING 30...
Page 54: ...Wiring Diagrams 54 2012 Viking Preferred Service UPPER SECTION WIRING 36...
Page 55: ...Wiring Diagrams 2012 Viking Preferred Service 55 LOWER SECTION WIRING 36...
