Thetford N81 Series Owner's Manual - 3/23/06 - 2/19/07 - Manual (Page 7)

Owner’s Manual 7
- During the 30 second trial for ignition, both the ON
and the GAS light show.
- If the ON light [3] and the GAS light [4] both show after
30 seconds, it means that the refrigerator is operating
on propane gas.
- At this time, all of the air is removed from the
propane gas supply lines and you may select
AUTO mode of operation if you wish.
- If the air in the propane gas supply lines prevents the
burner from igniting on propane gas after 30 seconds
the refrigerator controls close the gas safety valve and
the igniter stops sparking.
- Both the ON light and the GAS light flash about
once every second.
- Push the selector switch to the OFF position and
then to the GAS position and the refrigerator will
start a 30 second trial for ignition.
- Depending on how much air may be in the propane gas
supply lines, you may need to repeat the 30 second trial for
ignition two or three times.
- If the burner does not ignite on propane gas after two or
three attempts, stop and consult your local dealer or an
authorized Norcold Service Center.
Set the controls to automatic mode operation:
Push the selector switch to the AUTO position.
- If 120 volts AC is available to the refigerator, the ON light [3]
shows.
- This means that the refrigerator is operating on AC
electric.
- If 120 volts AC is not available to the refigerator, the ON light
and the GAS light both show.
- This means that the refrigerator is operating on
propane gas.
If the energy source is interrupted:
- The refrigerator shows a fault code.
- Refer to the “Fault Codes” section of this manual.
Set the controls to manual mode operation:
- Push the selector switch to the GAS position.
- When the ON light and the GAS light both show, this means
that the refrigerator is operating on propane gas.
If the energy source is interrupted:
- The refrigerator shows a fault code.
- Refer to the “Fault Codes” section of this manual.
Cooling unit sensing:
The controls have the ability to sense the operation of the
cooling unit. If the controls sense that the cooling unit has
stopped cooling:
- The heat sources to the cooling unit are turned off and are
locked out by the controls.
- The ON light flashes about five times every three seconds.
You can reset the controls and remove the fault code one time.
To reset the controls, shut off and then start the refrigerator.
- To turn off the refrigerator, push the selector switch to the
OFF position.
- To turn on the refrigerator, push the selector switch to the
AUTO position.
If you reset the controls and the fault occurs again before the
refrigerator completes a full cooling cycle:
- The heat sources to the cooling unit are turned off and are
locked out.
- The ON light flashes about five times every three seconds.
- This time you can not reset the fault. Have the refrigerator
serviced by your dealer or a Norcold authorized Service
Center as soon as possible.
Effects of High Altitude on Propane Gas
Operation
When you operate the refrigerator on propane gas at altitudes
higher than 5500 feet above sea level:
- You may experience reduced cooling performance of the
refrigerator.
- You may experience burner outages.
To avoid these possible problems, Norcold recommends that
you operate the refrigerator on AC when at altitudes higher than
5500 feet above sea level.