Daikin FTXM50M - Page 46

45
Troubleshooting
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LED ON OUTDOOR UNIT PCB
3MXM series
GREEN RED
MICROCOMPUTER
NORMAL
MALFUNCTION
DETECTION
LED-A LED1 LED2 LED3 LED4 LED5 DIAGNOSIS
●●●●●
NORMAL CHECK INDOOR UNIT
● ●
HIGH PRESSURE PROTECTOR WORKED OR FREEZE-UP IN
OPERATING UNIT OR STAND-BY UNIT
●
●
●
* OVERLOAD RELAY WORKED OR HIGH DISCHARGE PIPE
TEMPERATURE
●
●
●
FAULTY COMPRESSOR START
● ● ●
INPUT OVERCURRENT
●●●
* THERMISTOR OR CT ABNORMALITY
● ●
HIGH TEMPERATURE SWITCHBOX
●●● ●
HIGH TEMPERATURE AT INVERTER CIRCUIT HEATSINK
●● ●●
* OUTPUT OVERCURRENT
●● ●
* REFRIGERANT SHORTAGE
●● ●
LOW VOLTAGE TO MAIN CIRCUIT OR MOMENTARY VOLTAGE
LOSS
●●●●
REVERSING SOLENOID VALVE SWITCHING FAILURE
●
FAN MOTOR FAULT
−−−−
●
[NOTE 1]
●
−−−−
●
POWER SUPPLY FAULT OR [NOTE 2]
NOTE: The LED5 is only available in the 5M series.
GREEN NORMALLY FLASHING
RED NORMALLY OFF
ON
FLASHING
●
OFF
−
IRRELEVANT
■
LED ON OUTDOOR UNIT PCB
2MXM series
GREEN
MICROCOMPUTER NORMAL
LED-A DIAGNOSIS
NORMAL CHECK INDOOR UNIT
[NOTE 1]
●
POWER SUPPLY FAULT OR [NOTE 2]
GREEN NORMALLY FLASHING
ON
FLASHING
●
OFF
NOTE
• Turn the power off and then on again. If the LED display recurs, the outdoor unit PCB is faulty.
• Diagnosis marked
* Do not apply to some cases. For details, refer to the service guide.