Refrigeration unit
operation stops
Refrigeration unit
operation stops
Sub-engine speed is abnormally high.
Sub-engine starting failed.
Refrigeration unit
operation stops
Heater protective device operated.
Side cover at the sub-engine side
is not closed.
Motor protective device operated.
Refrigeration unit
operation stops
Refrigeration unit
operation stops
Refrigeration unit
operation stops
Room temperature sensor
is abnormal.
Refrigeration unit
operation stops
Sub-engine speed sensor is
abnormal.
* 2
* 1
Alarm
Code
Error Contents Measures
Refrigeration
Unit State
* 1
Sub-engine speed is
abnormally low.
Refrigeration unit
operation stops
Sub-engine water temperature
switch is operating.
Refrigeration unit
operation stops
Sub-engine oil pressure switch
is operating.
Refrigeration unit
operation stops
Controller communications are
abnormal.
29
--
Troubleshooting
The sub-engine oil pressure switch has functioned.
Contact your dealer.
The sub-engine speed has dropped abnormally.
Contact your dealer.
The sub-engine speed has risen abnormally.
Contact your dealer.
Refrigeration unit
operation stops
Sub-engine rising failed.
* 2
The sub-engine rising failed.
Contact your dealer.
The motor's protective device has functioned.
Contact your dealer.
Refrigeration unit
operation stops
The side cover at the sub-engine side is open.
Close the side cover before starting operation.
The heater's protective device has functioned. (Excluding
Type 25)
Contact your dealer.
The sub-engine water temperature switch has functioned.
(Overheat)
Check the cooling water level, and replenish if low.
Check whether the radiator is dirty, and clean it if it is.
The room temperature sensor has a broken connection or
short circuit, or the connector’s connection is faulty. Check
the leads and connector. If they are faulty, contact your
dealer or the nearest service shop.
The room temperature display shows “ ” when there
is a broken connection, and shows “ ” or higher if
there is a short circuit.
• The sub-engine speed sensor has a broken wire, has
short circuited, or there is a contactor contact defect.
Inspect the lead wire and connector. If an abnormal
state is found, contact your dealer.
• The self-starting motor start failed.
If the self-starting motor does not start when the unit is
restarted, the battery is dead or the self-starting motor is
faulty. Charge the battery if it is dead.
If the self-starting motor is faulty, contact your dealer.
(The self-starting motor starts six seconds after the
RUN/STOP switch is turned "RUN".)
• The wiring harness connection to terminal No. 7 (#10B)
of connector CN3 inside the control box is faulty.
• Cabin controller communications are faulty. In this case,
the room temperature display shows “ ” Contact
your dealer or the nearest service shop.
The sub-engine starting failed.
Check the fuel level, and replenish if low. Purge the air at
the fuel filter section.
If a display does not appear, or if a sign other than the above 19 types appears, contact your dealer.
* 2
* 2
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