Blue Bird M380 2003, Owner'S Manual

Page: 230 / 579

4-16 – Interior and Exterior Systems Operation - Appliances______________________________M380 Owner’s Manual
4-16-2 Rev. ”G”
4-16.1.4 Thermostat
The thermostat on the refrigerator controls both the gas and electric operation, thereby eliminating
the necessity of resetting each time a different energy source is employed.
After the initial start-up, the thermostat should be moved from “COLDEST” to the desired
temperature setting, usually at mid setting.
4-16.1.5 To Shut Off The Refrigerator
The refrigerator may be shut off while in any mode of operation by pressing the main power
ON/OFF button to the UP (OFF) position. This shuts off all DC power to the refrigerator,
including the interior light.
4-16.1.6 Description of Operating Modes
AES/AUTO Mode
When operating in the AES/AUTO mode, the AES/AUTO mode indicator lamp (B) will illuminate. The
control system will automatically select between AC and GAS operation with AC having priority over
GAS. Either the AC indicator lamp (A) or the GAS indicator lamp (C) will illuminate depending on the
energy source selected by the control system. If the control system is operating with AC energy and
it then becomes unavailable, the system will automatically switch to GAS. As soon as AC becomes
available again the control will switch back to AC regardless of the status of GAS operation.
Gas Mode
When operating in the GAS mode the AES/AUTO mode indicator lamp (B) will be off and the GAS
mode indicator lamp (C) will be illuminated.
This mode provides LP gas operation only. The control system will activate the ignition system and
will attempt to light the burner for a period of approximately 45 seconds. If unsuccessful, the
CHECK indicator lamp (D) will illuminate and the GAS mode indicator lamp (C) will turn off.
To restart GAS operation, press the main power ON/OFF button (1) to the OFF and then ON
position. The control system will attempt a new 45 seconds ignition sequence.
If the refrigerator has not been used for a long time or the LP tanks have just been refilled, air may
be trapped in the supply lines. To purge the air from the lines may require resetting the main power
ON/OFF button (1) three or four times. If repeated attempts fail to start the LP gas operation, check
to make sure that the LP gas supply tanks are not empty and all manual shutoff valves in the lines
are open. If the problem is still not corrected, contact a service center for assistance.
If the control is switched to AC operation while the CHECK indicator lamp is on, it will function
properly, but the CHECK indicator lamp will not go off until the main power ON/OFF button is
pressed to the OFF then ON position.
Limp Mode of Operation
This control system contains a feature where it will continue to operate the cooling system in the
event of a failure of a major operating component. Two different modes of operation can occur in
this category.
If for some reason the display module becomes non-functional, the control system will revert to
full automatic operation selecting the best energy source available with AC, GAS priority. The
temperature of the refrigerator will be maintained at the MID position within normal temperature
tolerances. The power module will continually attempt to reestablish operation of the display
module.
The second limp mode of operation will execute when a failure of the temperature sensing device
or associated electronic circuitry occurs. If this should occur, the control system will operate on