Sleep Mode
Enable and configure Sleep mode for cold-ambient parking
Sleep mode is used in cold ambients when the unit will be off for an extended period with no product inside the compartment. The unit periodically "wakes up" and starts the engine to keep the battery charged and the engine warm. There is NO temperature control in Sleep mode.
There is NO TEMPERATURE CONTROL in Sleep mode. Never use Sleep mode if the compartment contains perishable or frozen products.
Enabling Sleep Mode
With the system powered up (START/RUN-OFF switch in START/RUN) and in Advanced User mode, press the MENU key until FUNCTIONS is displayed.
Press the FUNCTIONS soft key to display the Functional Parameter Screen.
Press the ▼ key until the START-STOP SETTINGS sub-menu is highlighted, then press the "=" key to enter the menu.
Press the ▼ key until "SLEEP MODE SETTINGS" is highlighted. Press the "=" key.
Press the ▲ or ▼ key until "ON" is highlighted. Press the "=" key to save the setting to memory. The unit is now in Sleep mode.
Sub-menu selections for "WAKE UP TIME" and "RUN PRETRIP AT WAKE" are now available. Configure these as needed (see below).
Place the START/RUN-OFF switch in the OFF position, then back to the START/RUN position.
Wake Up Time Setting
"WAKE UP TIME" may be set to ON or OFF. The default is OFF. • OFF — The unit remains in Sleep mode until exited manually. • ON — The "SET WAKEUP TIME" menu becomes available, allowing you to set a date and time for automatic wake up.
With "WAKE UP TIME" set to ON, press the "=" key to enter the SET WAKEUP TIME menu. Enter the Month, Day, Year, Hour, and Minute. The wake up time must be at least 1 hour and no more than 8 days from the current time.
The system uses a 24-hour clock. Hours 00 to 11 are AM and hours 12 to 23 are PM.
Pretrip at Wake Setting
"RUN PRETRIP TEST AT WAKE" may be set to YES or NO. The default is NO. • NO — The unit wakes up at the designated time and controls to setpoint. • YES — The unit wakes up, automatically runs Pretrip, then controls to setpoint. "PRETRIP PASS/FAIL" remains in the MessageCenter until manually cleared by pressing any key.
Sleep Mode Behavior
When the unit starts during Sleep mode, it runs for 4 minutes minimum, until engine coolant temperature is above 95°F (35°C), the battery is charged ("OK" displayed in battery unit data), and charging amps are less than the configured setting. Any remaining Start-Stop Minimum Off Time is ignored.
The unit restarts when engine coolant temperature drops below the configured restart temperature value or if battery voltage drops below the configured battery restart value.
While the engine is running in Sleep mode, "SLEEP WARNING: NO TEMP CONTROL" flashes in the MessageCenter. While cycled off, "SLEEP MODE, OFF/ON TO WAKE" is displayed. The display backlight turns off after 5 minutes.
While in Sleep mode you may: • View Unit Data and Alarm Lists • View and change Functional Parameters • Initiate Manual Defrost or Pretrip You cannot change Start-Stop/Continuous Run selections or the setpoint.
If the Engine Coolant Temperature sensor fails: in ambients above 32°F (0°C), the unit monitors battery voltage and charging amps only. In ambients below 32°F (0°C), the unit runs for 20 minutes minimum, then restarts every 60 minutes maximum off time, with normal battery monitoring.