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Simple to Start:

One or Multiple Zones

1. Press the ON key to turn 

the unit on. 

• The Thermo King 

Logo will briefly be 
displayed as the 
system initializes.

• CONFIGURING 

SYSTEM PLEASE 
WAIT briefly appears 
while communications 
are established and 
the unit prepares for 
operation.

• The Standard Display 

showing box 
temperatures and setpoints briefly appears next.

• DIESEL ENGINE STARTING appears as the engine 

preheats and starts. On SmartPower equipped units, 
ELECTRIC MOTOR STARTING will appear if the unit is 
connected to standby power.

• The Standard Display showing box temperatures and 

setpoints appears while the unit is running.

2. Press the OFF key to turn the unit off. The unit will immediately 

shut off and SYSTEM IS POWERING DOWN will appear 
briefly.

To turn a Zone on or off:

Zone 1 will always be displayed any time the unit is turned on. 
Zone 2 and Zone 3 (if present) can be turned on and off as 
desired. 
1. Return to the Standard Display (press any key to return to the 

Standard Display). 

2. Press the ZONE key under the desired zone. 

• The setpoint display appears. If the zone is turned on, the 

third key will be labeled Turn Zone Off. If the zone is turned 
off, the third key will be labeled Turn Zone On.

 

3.  Press the TURN ZONE OFF key to turn the zone off.

• The display briefly shows PROGRAMMING ZONE ON/OFF - 

PLEASE WAIT. 

• The display will confirm the new Zone setting for several 

seconds. 

• The display will return to the Standard Display showing the 

Zone is off. The setpoint for the Zone has been replaced 
with OFF to indicate that the zone is now off. 

Simple to Set:

CYCLE-SENTRY™ or Continuous Run

1. From the Standard 

Display, press the MENU 
key to display the MODE 
menu. 

2. When the MODE Menu is 

shown press the 
SELECT key. 

• TURN OFF CYCLE 

SENTRY or TURN ON 
CYCLE SENTRY will 
appear. 

3. Press the SELECT key to 

change the mode. 

• The new mode is 

confirmed for 10 
seconds followed by 
NEW SYSTEM 
MODE IS (Cycle Sentry or Continuous).

4. Once the display returns to Mode Menu, press EXIT key to 

return to the Standard Display.

5. Press the SELECT key again to change the unit back to the 

previous mode.

Simple to Set:

Setpoint Temperature

1. From the Standard Display, press the ZONE key for the desired 

zone (example: Zone 2 is shown). 

• The setpoint display will appear for the selected Zone. 

2. Press the + or - keys to change the setpoint reading. 

3. Press the YES or NO key accordingly. 

• PROGRAMMING NEW SETPOINT - PLEASE WAIT will 

appear.

• NEW SETPOINT WILL BE XX appears briefly.

• The Standard Display appears with Zone setpoint changed 

to the new setpoint.

Simple to Check:

Gauges

1. From the Standard Display, press the MENU key.

2. Press the NEXT key until the Gauges Menu appears.

3. Press the SELECT key to enter the Gauges Menu.

4. Press the BACK or NEXT 

keys to scroll through the 
available gauges.

5. Press the LOCK key to 

display any gauge 
screen for an indefinite period. 

6. Press the LOCK key again to unlock the screen.

7. Press the EXIT key to return to the Standard Display.

Simple to Defrost:

Initiate Manual Defrost

1. From the Standard Display, press the DEFROST key.

• DEFROST will briefly be displayed followed by SELECT 

ZONE TO DEFROST.

2.  Press the SELECT key for desired zone (example: Zone 1 is 

shown).

• The display will 

briefly show 
DEFROST, followed 
by PROGRAMMING 
DEFROST - 
PLEASE WAIT and 
then DEFROST 
STARTED.

• The bar indicator 

shows approximate 
percentage of time 
remaining to 
complete defrost 
cycle. 

NOTE: The defrost cycle 
terminates automatically 
when the evaporator coil reaches a predetermined temperature or 
when the defrost timer expires. Defrost can also be terminated by 
turning the unit off and back on.

Simple to Check:

Sensors

1. From the Standard Display, press the MENU key. 

2. Press the NEXT key until the Sensors Menu appears.

3. Press the SELECT key to 

enter the Sensors Menu. 

4.  Press the NEXT or BACK 

keys to scroll through the 
sensors. 

5. Press the LOCK key to display any sensor screen for an 

indefinite period. 

6. Press the LOCK key again to unlock the screen.

7. Press the EXIT key to return to the Standard Display.

Simple to Check:

Pretrip Test

1. Clear all alarm codes.

2. From the Standard Display, 

press the MENU key. 

3. Press the NEXT key until 

the PRETRIP Menu 
appears. 

4. Press the SELECT key.

• FULL PRETRIP will be 

initiated if the unit is not 
running. 

• RUNNING PRETRIP 

will be initiated if the unit 
is running on either 
diesel or electric standby. 

When all tests are complete, the results are reported as PASS, 
CHECK or FAIL. If the results are CHECK or FAIL, the 
accompanying alarm codes will direct the technician to the cause 
of the problem.

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