Thetford N500 Series Owners Manual - Manual (Page 9)

Owner’s Manual 9
- If 120 volts AC is available to the refrigerator:
- The light bar beside AC [4] also shows in the center
display.
- After ten seconds, the light bar beside AC goes off and
only the light bar beside AUTO remains.
- This means that the refrigerator is operating on AC
electric.
- If 120 volts AC is not available to the refrigerator:
- The light bar beside AC [4] also shows in the center
display.
- After a few seconds, the light bar beside AC goes off
and the light bar beside LP GAS [6] shows.
- After 10 seconds, the light bar beside LP GAS goes off
and only the light bar beside AUTO remains.
- This means that the refrigerator is operating on
propane gas.
- On model N510 only, if neither 120 volts AC nor propane
gas is available to the refrigerator:
- The fault code “F” shows in the center display.
- On model N510.3 only, if neither 120 volts AC nor propane
gas is available to the refrigerator:
- The refrigerator control will automatically change to DC
electric operation.
NOTE: DC electric operation is less efficient than AC
electric and propane gas. Use DC electric
operation only to maintain the refrigerator
temperature while in transit and if the other
energy sources are not available. Do not use
DC electric to initially decrease the temperature
of the refrigerator.
If an energy source is available to the refrigerator, but is not
operating correctly:
- A fault code shows in the center display.
- The refrigerator controls try to change to a less efficient
energy source.
- If a less efficient energy source is not available:
- A fault code shows in the center display.
- Refer to the “Fault Codes” section of this manual.
Set the controls to manual mode operation:
- Push the ON / OFF button to turn the refrigerator on.
- Push and hold the MODE button until the light bar shows
beside AC [4] and then release.
- This means that the refrigerator is operating on AC
electric.
- Push and hold the MODE button until the light bar shows
beside LP GAS [6] and then release.
- This means that the refrigerator is operating on
propane gas.
- Push and hold the MODE button until the light bar shows
beside DC [8] and then release.
- This means that the refrigerator is operating on AC
electric.
If the energy source is interrupted:
- A fault code shows in the center display.
- Refer to the “Fault Codes” section of this manual.
Backup operating system:
This refrigerator has a backup operating system. The backup
operating system allows the refigerator 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 temperature
setting flashes in the center display for ten seconds.
- After the temperature setting flashes, the mode of
operation appears in the center dispaly.
- The backup operating system can overfreeze 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 compart-
ment do not become stable. Allow the refrigera-
tor to operate for about one hour after each
adjustment change before you examine the
contents. The number “9” is the coldest
temperature setting.