oPn and a tone: a sensor warning. Press ALARM OFF, then call if the temperature stays off the display.
Model compatibility: Viking reuses codes across series and model years, so oPn may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Plain language
What this code means
oPn on the display with an audible alarm is the temperature sensor alarm, indicating a sensor problem.
Note the spelling: lowercase o, capital P, lowercase n. oPn showing instead of the temperature, with an alarm tone, tells you a Viking built-in refrigerator has detected a temperature sensor problem. That is according to Viking’s VCBB5363E manual for built-ins.
What Viking says to do
Press ALARM OFF.
If temperatures do not come back, the manual says to reach a Viking Range, LLC technician at once.
The manual describes a sensor warning and does not say cooling has stopped.
How the alarm is described
The refrigerator senses sensor problems electronically, and the alarm goes off with oPn or Shr on screen. Those are two versions of one alarm, and the ALARM OFF pad turns the sound off.
Points to remember
Cabinet temperature cannot be read from the panel while oPn is up.
Pressing ALARM OFF is all the manual asks of an owner.
If oPn stays, confirm in some other way that the food is cold.
Do not confuse with OP
OP belongs to the technician test screens of VCFF French door models and means an open thermistor. oPn is a built-in refrigerator alarm for owners.
Where it applies
The alarm is part of the Viking built-in refrigerator in the VCBB5363E manual. Under normal conditions the display shows temperatures, and oPn appears only when the sensor problem is detected.
Important safety warning. Do not attempt repairs involving electrical components, gas, water lines, refrigerant or sealed systems. Unplug the appliance if it is safe to reach the outlet, and leave internal diagnostics to a qualified technician.
Seeing this code on your Viking appliance?
Book a specialist visit for a clear estimate and approval before any repair.
