Daikin FTXS20CVMB Operation Manual page 32

LED ON OUTDOOR UNIT PCB
GREEN
MICROCOMPUTER
NORMAL
LED-A LED1 LED2 LED3 LED4
NORMALLY
GREEN
FLASHING
RED NORMALLY OFF
ON
FLASHING
OFF
IRRELEVANT
LED ON OUTDOOR UNIT PCB
GREEN
MICROCOMPUTER
NORMAL
LED-A
NORMALLY
GREEN
FLASHING
ON
FLASHING
OFF
NOTE
1. Turn the power off and then on again. If the LED display recurs, the outdoor unit PCB is faulty.
2. Diagnosis marked
∗ Do not apply to some cases. For details, refer to the service guide.
2MXS, 3MXS, 3MKS, 4MXS, 4MKS, 5MXS, 5MKS series
RED
MALFUNCTION
DETECTION
LED5
NORMAL
HIGH PRESSURE PROTECTOR WORKED OR FREEZE-UP IN OPERATING UNIT OR STAND-BY UNIT
∗
FAULTY COMPRESSOR START
INPUT OVERCURRENT
∗
HIGH TEMPERATURE SWITCHBOX
HIGH TEMPERATURE AT INVERTER CIRCUIT HEATSINK
∗
∗
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.
2MXS, 2MKS series
NORMAL CHECK INDOOR UNIT
[NOTE 1]
POWER SUPPLY FAULT OR [NOTE 2]
DIAGNOSIS
CHECK INDOOR UNIT
OVERLOAD RELAY WORKED OR HIGH DISCHARGE PIPE TEMPERATURE
THERMISTOR OR CT ABNORMALITY
OUTPUT OVERCURRENT
REFRIGERANT SHORTAGE
DIAGNOSIS
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