Daikin D Series Service Manual page 134

SiBE12-519
LED ON OUTDOOR UNIT PCB
GREEN
MICROCOMPUTER
NORMAL
LED-A
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
NOTES
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.
System Configuration
3MXS, 3MKS, 4MXS, 4MKS series
RED
MALFUNCTION
DETECTION
LED1 LED2 LED3 LED4
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
Instruction
125