Mitsubishi Electric PK-2.5FLD Technical & Service Manual page 30

1. Self-diagnostic function
1 Turn on the main power to the unit.
CHECK
2 Press the
button twice continuously.
• begins to light and refrigerant address display "00" begins to bink.
• Start this operation from the status of remote controller display turned off
3 While pointing the remot controller toward the unit's receiver, press the
button
• If the buzzer sounfd is heard and the ON/OFF lamp (unit display) blinks,
refer to following table.
4 While pointing the remote controller toward the unit's receiver, press the
ON/OFF
ON/OFF button.
• Self-check mode is canceled.
Check Code
Suction sensor alarm
1
2 Plpe sensor alarm
Transmission alarm
3
4 Drain sensor alarm
Drain pump alarm
5
Anti-freezing on
6
Anti-overheat on
7 System error
Outdoor unit alarm
8
9 No alarm (no error)
2. OTHER TROUBLES AND CAUSES
Auto vanes do not work.
Unit stops after 5 to
20 seconds operation
Power ON/OFF button
is not available.
[for PK-2.5FLD
Alarm Buzzer sound
Single beep
Single beep
Single beep
Single beep
Single beep
Single beep
Single beep
Single beep
Single beep
Receiving signal only
(no error alarm)
Auto vane motor does not work.
Connector is poorly connected.
Auto vane motor is poorly assembled.
Indoor controller board is damaged.
Protection function is working.
Indoor/outdoor connecting wire is connected
incorrectly.
Indoor/outdoor connecting wire shorts.
Compressor protector is damaged.
Outdoor controller board is defective.
Remote controller is damaged.
Transmission wire is poorly connected
, PK-3FLD , PK-4FLSD
2 2
h
1
2
3
4
5
6
6
7
8
Auto vane motor is damaged.
Auto vane motor relay is damaged.
Refer to check code on remote controller display.
Transmission wire is damaged.
Connector is poorly connected.
30
]
2
TEMP
ON/OFF
4
FAN AUTO STOP
AUTO START
MODE VANE
CHECK LOUVER h
2
min
TEST RUN
RESET
SET CLOCK
3