DESCRIPTION OF OPERATING MODES
AESlAUTO MODE
When operating in the AES/AUTO mode, the AES/AUTO mode indicator lamp (6) will illuminate. The control sys- tem will automatically select between AC and GAS op- eration 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 theAES/AUTO mode indicator lamp (6) will be off and the GAS mode indica- tor 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 approximately45 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 ONI OFF button (1) to the OFF and then ON position. The control system will attempt a new 45 seconds ignition S?q”e”CCT
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, con- tact 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.
EFG
LIMP MODE OF OPERATION
This control system contains a feature where it will con- tinue 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 func- tional, 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 tem- perature 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 con- trol system will operate on the energy source selected via the control panel. The cooling unit will run continu- ously on the selected energy source. The refrigerator will continue to operate in this mode indefinitely or until
a new sensor is installed and the system is reset.
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