ESIE16-02B
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Part 2. Troubleshooting
2.1. Error codes check
Page 18
4/04/17
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Version 1.1
RA R32 Split & multi split M-Series
2.1.2. Error codes via outdoor unit PCB
2.1.2.1. How to retrieve error codes
Troubleshooting via the service display.
Note 1: Turn the power off and on again
Figure 2-1: Service display location
2.1.2.2. How to reset error codes
1. When the problem is solved, perform a power reset
GREEN
RED
GREEN
FLASHING: NORMAL
w
ON
c
FLASHING
MICRO-
COMPUTER
NORMAL
LED-A
MALFUNCTION DETECTION
RED
OFF: NORMAL
x
OFF
—
ANY STATUS
* MAY NOT BE APPLICABLE DEPENDING ON THE MODEL
LED
1
LED
2
LED
3
LED
4
LED
5
DIAGNOSIS
c
x
x
x
x
x
normal -> check indoor unit
c
w
x
w
w
x
high pressure protector activated or freeze-up in operating unit, or stand-by unit
c
w
x
w
x
x
overload relay activated or high discharge pipe temperature
c
x
w
w
x
x
faulty compressor start
c
x
w
x
w
x
input overcurrent
c
w
w
x
x
x
thermistor or ct abnormality
c
w
w
x
w
x
high temperature switchbox
c
x
x
x
w
x
high temperature at inverter circuit heatsink
c
x
x
w
x
x
output overcurrent
c
x
x
w
w
x
refrigerant shortage
c
w
x
x
w
x
low voltage to main circuit or over voltage to main circuit
c
w
x
x
x
x
reversing solenoid valve switching failure. * or high pressure switching failure
c
w
w
w
x
x
faulty outdoor unit pcb
c
w
w
w
w
x
fan motor fault
c
x
w
x
x
x
wiring error check unfinished
w
—
—
—
—
—
(Note 1)
c
—
—
—
—
—
power supply fault
1. Service monitor LEDs
1
