Daikin Inverter FDXS25CVMB Operation Manual page 27

LED ON OUTDOOR UNIT PCB
GREEN
MICROCOMPUTER MALFUNCTION
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.
26
3MXS, 3MKS, 4MXS, 4MKS series
RED
DETECTION
NORMAL
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]
2MXS, 2MKS series
NORMAL CHECK INDOOR UNIT
[NOTE 1]
POWER SUPPLY FAULT OR [NOTE 2]
DIAGNOSIS
CHECK INDOOR UNIT
DIAGNOSIS