Operating Instructions
25
Alarm Icon
If the system has an active alarm the Alarm Icon will
illuminate. It will be Red for shutdown alarms and Yellow for
Check alarms.
Alarm Group Indicator
System shutdown alarms have been organized into three
general groups to help diagnosis. When a shutdown alarm is
generated the red Alarm Icon and the corresponding Alarm
Group name will illuminate.
• [ENG] are APU engine related alarms.
• [ALT] are alternator or charging system alarms.
• [ACS] are air conditioning system related alarms.
Clearing Alarms
Alarm codes can be cleared by turning the controller off and
back on again. If the condition that caused the alarm still exists,
the alarm will return. Refer to the TriPac EVOLUTION
Diagnostic Manual TK 55739 for more information about
alarm codes. Contact the nearest Thermo King dealer if alarms
continue to appear.
Operating Modes
Cool Mode
When Cool Mode is selected at the Mode Selector knob, the
HMI Control Panel uses the Cab Temperature Sensor to
measure sleeper compartment temperature. If it is above the
temperature selected by the Setpoint Selector knob, the APU
engine will begin a start sequence (if not already running). The
evaporator fan is defaulted ON and will run in low or the speed
selected by the Fan Speed Selector knob. The compressor
clutch will engage 60 seconds after a successful engine start.
The system will cool the sleeper compartment until it falls to
the selected setpoint temperature. The compressor clutch will
disengage but the APU engine will continue to run for several
minutes based on the Engine Delay Timer setting (default 8
minutes). The evaporator fan will continue to run at the
selected speed. If sleeper compartment temperature rises above
setpoint by more than the Dead Band setting (default 3 F)
during this time the compressor clutch will re-engage.
During normal air conditioning operation the compressor
clutch may cycle on and off with no alarm. The evaporator fan
will continue to run. The system is monitoring the Evaporator
Operating Instructions
25
Alarm Icon
If the system has an active alarm the Alarm Icon will
illuminate. It will be Red for shutdown alarms and Yellow for
Check alarms.
Alarm Group Indicator
System shutdown alarms have been organized into three
general groups to help diagnosis. When a shutdown alarm is
generated the red Alarm Icon and the corresponding Alarm
Group name will illuminate.
• [ENG] are APU engine related alarms.
• [ALT] are alternator or charging system alarms.
• [ACS] are air conditioning system related alarms.
Clearing Alarms
Alarm codes can be cleared by turning the controller off and
back on again. If the condition that caused the alarm still exists,
the alarm will return. Refer to the TriPac EVOLUTION
Diagnostic Manual TK 55739 for more information about
alarm codes. Contact the nearest Thermo King dealer if alarms
continue to appear.
Operating Modes
Cool Mode
When Cool Mode is selected at the Mode Selector knob, the
HMI Control Panel uses the Cab Temperature Sensor to
measure sleeper compartment temperature. If it is above the
temperature selected by the Setpoint Selector knob, the APU
engine will begin a start sequence (if not already running). The
evaporator fan is defaulted ON and will run in low or the speed
selected by the Fan Speed Selector knob. The compressor
clutch will engage 60 seconds after a successful engine start.
The system will cool the sleeper compartment until it falls to
the selected setpoint temperature. The compressor clutch will
disengage but the APU engine will continue to run for several
minutes based on the Engine Delay Timer setting (default 8
minutes). The evaporator fan will continue to run at the
selected speed. If sleeper compartment temperature rises above
setpoint by more than the Dead Band setting (default 3 F)
during this time the compressor clutch will re-engage.
During normal air conditioning operation the compressor
clutch may cycle on and off with no alarm. The evaporator fan
will continue to run. The system is monitoring the Evaporator
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