Backup Operating System - Norcold N620 Service Manual

Manual mode operation:
When you select one of the three manual modes, "AU" goes
out in the center display and either "AC", "LP", or "dc" appears.
- "AC" means that the refrigerator is operating on AC
electric.
- "LP" means that the refrigerator is operating on propane
gas.
- "dc" means that the refrigerator is operating on DC
electric.
If the energy source is interrupted:
- An audible alarm starts.
- The refrigerator stops operation.
- Refer to the "Fault Codes" section of this manual.
Ignition of propane gas in either auto or manual
mode:
NOTE: On initial start up of the refrigerator, ignition of the
propane gas may not occur within 30 seconds.
If ignition of the propane gas does not occur within 30
seconds:
- The gas safety valve of the refrigerator closes.
- In the Auto mode:
- The refrigerator control changes to a less efficient
energy source (3-way models only).
- The fault code "no" "FL" shows in the center display
(2-way models only).
- In the Manual mode and operating on propane gas:
- An audible alarm starts.
- The fault code "no" "FL" shows in the center display.
- The audible alarm and the fault code remain until you
push the MODE button.
- Push the ON/OFF button two times to stop and start
the refrigerator.
- If ignition does not occur after two or three times:
- Check the gas supply line.
- Refer to the "Propane Gas Ignition Fault" chart that is
in the "Troubleshooting" section this manual.

Backup Operating System

This refrigerator has a backup operating system. The backup
operating system allows the refrigerator to continue to cool if
the temperature sensor of the refrigerator should fail.
If this failure occurs:
- The refrigerator automatically changes to the backup
operating system.
- When you push the TEMP SET button, the tempera-
ture setting flashes in the center display for ten
seconds.
- After the temperature setting flashes, the mode of
operation appears in the center display.
- The backup operating system can over freeze or thaw the
contents of the freezer and the fresh food compartment.
- Make sure the temperatures of the freezer and the
fresh food compartment are satisfactory.
NOTE: If you open the door(s) too often, the tempera-
tures inside the freezer and fresh food
compartment do not become stable. Allow the
refrigerator to operate for about one hour after
each adjustment change before you examine
the contents. The number "9" is the coldest
temperature setting.
- If the temperature is too warm, push and hold
the TEMP SET button to raise the temperature
setting by one number.
- If the temperature is too cold, push and hold the
TEMP SET button to lower the temperature
setting by one number.
- The owner should have the refrigerator serviced by a
dealer or an Norcold authorized Service Center as soon
as possible.
Service Manual 9