SiEBE18-526 Instruction
System Configuration 215
LED1 LED2 LED3 LED4
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.
NOTES
NORMALLY
FLASHING
ON
FLASHING
OFF
GREEN
GREEN
MICROCOMPUTER
NORMAL
LED-A
DIAGNOSIS
NORMAL CHECK INDOOR UNIT
[NOTE 1]
POWER SUPPLY FAULT OR [NOTE 2]
LED ON OUTDOOR UNIT PCB 2MXS, 2MKS series
NORMALLY
FLASHING
NORMALLY OFF
ON
FLASHING
OFF
IRRELEVANT
GREEN
RED
LED ON OUTDOOR UNIT PCB 3MXS, 3MKS, 4MXS, 4MKS series
GREEN
MICROCOMPUTER
NORMAL
LED-A
RED
MALFUNCTION
DETECTION
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 STA RT
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]
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