Thermo King KD-II SR, Manual

Page: 56 / 182

Remote Control Panel Features (Rev. 04/03)
42
µP-T UNIT SELF CHECK TEST
The Unit Self Check is a functional test of the unit’s operat-
ing capability. Once the test is started by the operator, it is
fully automatic and requires no operator attendance.
Starting the Unit Self Check
The following steps are necessary to start a Unit Self Check:
• Disconnect the power cord, if present.
• Turn the On-Off switch ON.
• Clear any alarms.
• Press and hold the TK Logo key for at least 3 seconds
until the Unit Self Check [USC] prompt screen appears.
• Press the Enter key. The display will briefly show
[Lod] and the unit will then start the Unit Self Check.
If any alarms were not cleared before starting the Unit Self
Check, they will be displayed at this time. They can be
cleared by pressing the Enter key.
The balance of the Unit Self Check is fully automatic and
requires no operator attendance. The following tests are per-
formed:
Preheat and Start
The controller will automatically preheat and start the diesel
engine.
Display Check
All segments of the display will be lighted at the same time.
X 74 Microprocessor Reverted to Default Settings
X 77 Internal Fault Code, Factory or Dealer Reset
ALARM CODE DEFINITIONS
Always record any alarm codes shown.
Alarm codes preceded by a dash (-) were detected during a Unit Self Check
Stored Check Shutdown Code Description
Show Programmable Settings
All programmable settings will be sequentially displayed.
These settings may be verified by the operator if necessary.
Defrost Check
The operation of the damper door is checked.
RPM Check
The diesel engine RPM is checked in both high and low
speed.
Cooling Check
The ability of the unit to cool is checked.
Heating Check
The ability of the unit to heat is checked.
Cooling Check
A second cooling test is performed to ensure the unit can
switch from cool to heat and back to cool.
Unit Self Check Report
At the completion of the Unit Self Check, the check results
will appear on the display. They will remain until any key
on the controller is pressed. Check results are shown as
either [PASS], [CHEC] or [FAIL].
[PASS] — The unit has passed the Unit Self Check.