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.
Sleep mode provides NO TEMPERATURE CONTROL. 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 START-STOP SETTINGS 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. The unit is now in Sleep mode.
After enabling Sleep mode, additional settings for "WAKE UP TIME" and "RUN PRETRIP AT WAKE" become available. Use the same ▲/▼ and "=" key sequence to configure them.
Exiting Sleep Mode
Place the START/RUN-OFF switch in the OFF position, then back to the START/RUN position. The unit exits Sleep mode.
Wake Up Time Setting
"WAKE UP TIME" may be set to ON or OFF (default is OFF). • OFF — The unit remains in Sleep mode until you exit manually. • ON — The "SET WAKEUP TIME" menu becomes available. Press the "=" key to enter the date and time for automatic wake up.
The following fields can be entered: • Month (1 to 12) • Day (1 to 31) • Year (2009 to 2099) • Hour (0 to 23) • Minute (0 to 59)
The system uses a 24-hour clock. Hours 00 to 11 are AM and hours 12 to 23 are PM. The wake up time must be at least 1 hour and no more than 8 days from the time the clock is set.
Pretrip at Wake Setting
"RUN PRETRIP TEST AT WAKE" may be set to YES or NO (default is NO). • NO — The unit wakes at the designated time and controls to setpoint. • YES — The unit wakes, automatically runs Pretrip, then controls to setpoint. "PRETRIP PASS/FAIL" remains in the MessageCenter until you press any key to clear it.
Sleep Mode Engine Behavior
When the unit starts during Sleep mode, it runs for a minimum of four minutes until all of the following are met: • Engine coolant temperature is above 95°F (35°C) • Battery is charged ("OK" displayed in battery unit data) • Charging amps are less than the configured setting
While cycled off in Sleep mode, the unit will restart when engine coolant temperature drops below the configured restart value or battery voltage drops below the configured battery restart value.
If Sleep mode is selected when the unit is not running during a Start-Stop Off Cycle, any remaining Minimum Off Time is ignored and the engine will start.
Display Messages in Sleep Mode
• While the engine is running — "SLEEP WARNING: NO TEMP CONTROL" flashes in the MessageCenter. • While the unit is cycled off — "SLEEP MODE, OFF/ON TO WAKE" is displayed. The display backlight turns off after five minutes.
While in Sleep mode you may view Unit Data and Alarm Lists, view and change Functional Parameters, and initiate Manual Defrost or Pretrip. However, Start-Stop/Continuous Run selections and setpoint cannot be changed.
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 a 20-minute minimum, then restarts every 60 minutes while monitoring battery voltage and amperage normally.