– 1
17
–
LIGHTING MODE OF THE SELF-DIAGNOSIS LAMP
MODEL RAC-
25
NX2
DANGER
(DC350V)
CUT THE POWER
SOURCE AND WAIT
MORE THAN 10
MINUTES BEFORE
SERVICE WORK.
DO NOT TOUCH THE
OTHER COMPONENTS
WHEN OPERATING THE
SERVICE SWITCH.
SERVICE
OPERATION
PROCEDURE OF REFRIGERANT PUMP
DOWN OR INDEPENDENT OPERATION
OF OUTDOOR UNIT.
1. CUT OFF THE POWER SOURCE
ONCE THEN ON AGAIN.
2. WAIT 1 MINUTE AT LEAST.
3. PRESS THE SERVICE SWITCH
(WHICH IS ON THE PWB) MORE
THAN 1 SECOND.
SERVICE OPERATION WILL BE
STARTED.
TO STOP THIS OPERATION, PRESS
THE SERVICE SWITCH AGAIN (MORE
THAN 1 SECOND).
IN ORDER TO PROTECT THE DAMAGE
OF COMPRESSOR, DO NOT OPERATE
MORE THAN 5 MINUTES WITH
SERVICE VALVE CLOSE.
TO RESUME TO NORMAL OPERATION,
CUT THE POWER SOURCE ONCE THEN
ON AGAIN.
LD303
LD302
LD301
MAIN P.W.B.
VICE SWITCH
HIC
IPM
(3)
(2)
(1)
SELF−DIAGNOSIS LIGHTING MODE
:OFF
L
D
3
0
2
L
D
3
0
1
SELF−DIA−
DETAILS
MAIN CHECK POINT
[1]DURING OPERATION
LD303(RED)LIGHTS.
NORMAL
OPERATION
COMPRESSOR
OPERATION
NOT MALFUNCTION
OVERLOAD
(1)
OVERLOAD
(2)
OVERLOAD
(3)
ROTATION
SPEED
SET
VALUE
TIME
THE ROTATION SPEED IS
AUTOMATICALLY CONT−
ROLLED TO PROTECT THE
COMPRESSOR IN THE
OVERLOAD CONDITION.
[2]DURING STOP
LD303(RED)GOES OFF.
NORMAL
STOP
NOT MALFUNCTION.
1TIME
RESET
STOP
2TIMES
PEAK
CURRENT
CUT
3TIMES
ABNORMAL
LOW SPEED
ROTATION
4TIMES
SWITCHING
FAILURE
SWITCHING FROM LOW
FREQUENCY SYNC START
TO POSITION DETECTION
OPERATION FAILURE.
5TIMES
OVERLOAD
LOWER
LIMIT CUT
OUTDOOR UNIT IS EXPOSED TO DIRECT
OUTDOOR UNIT IS EXPOSED TO DIRECT
1
1
SUNLIGHT OR ITS AIRFLOW BLOCKED.
4
THE VOLTAGE IS EXTREMELY LOW.
6TIMES
OH THERMISTOR
TEMP.RISE
7TIMES
THERMISTOR
ABNORMAL
1
THERMISTOR
2
CONNECTION
OF THERMISTOR DEFECTIVE
3
THERMISTOR CIRCUIT
8TIMES
1
LEAK OF REFRIGERANT
2
COMPRESSOR
13TIMES
10TIMES
※EXAMPLE OF
BLINKING (5 TIMES)
2SEC
・・LIGHTS FOR 0.25
・・LIGHTS FOR 0.25
SEC AT INTERVAL
SEC AT INTERVAL
OF 0.25 SEC.
9TIMES
ABNORMAL
POWER
SOURCE
FAN LOCK
ERROR
OUTDOOR FAN RPM IS
NOT ROTATE AS INTENDED
RPM
1
FAN MOTOR
2
FAN MOTOR CIRCUIT
OVERLOAD PROTECTION
FUNCTION IS REQUESTING
LOWER SPEED THAN MINIMUM
SPEED OF COMPRESSOR.
COMPRESSOR PEAK
CURRENT WAS BEYOND
MAXIMUM LIMIT.
LOST THE COMPRESSOR
ROTOR POSITION.
ABNORMAL THERMISTOR
VALUE (OPEN OR SHORT)
WAS DETECTED.
MICROPROCESSOR WAS
REBOOTED. (IT IS NORMAL
WHEN POWER SW HAS BEEN
TURNED ON)
STOPPED BY THERMOSTAT
OR CONTROLLER.
ACCELERATION
FAILURE
COMPRESSOR WAS NOT
ACCELERATED MORE THAN
MINIMUM SPEED.
COMPRESSOR OVERHEAT
WAS DETECTED BY
OH THERMISTOR.
:LIGHT
:
:BLINK
THIS SHOWS AN
OVERLOAD PROTECTION
STATUS.
NOT MALFUNCTION.
EEPROM
READ
ERROR
MICROCOMPUTER CANNOT
READ THE DATA IN EEPROM.
12TIMES
COMMUNICA−
TIONS ERROR
2
FAN MOTOR
3
MAIN P.W.B.
1
LEAK OF REFRIGERANT
2
COMPRESSOR
3
OH THERMISTOR CIRCUIT
(MAIN P.W.B.)
1
MAIN P.W.B.
COMMUNICATIONS BETWEEN
INDOOR UNIT AND OUTDOOR
UNIT ARE INTERRUPTED
1
CABLE IS WRONG CONNECTED
2
CABLE IS 0PEN
3
INTERFACE
CIRCUIT OF BETWEEN INDOOR
UNIT AND OUTDOOR UNIT
ABNORMAL POWER SOURCE
WAS DETECTED
1
MAIN P.W.B.
1
MAIN P.W.B.
2
COMPRESSOR
1
MAIN P.W.B.
2
COMPRESSOR
1
MAIN P.W.B.
2
COMPRESSOR
1
ABNORMAL POWER SOURCE
2
CABLE IS WRONG CONNECTED
3
MAIN P.W.B.
Summary of Contents for RAC-25NX2
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Page 151: ...AW NO 0034EF RAF 25NX2 RAC 25NX2 Printed in Japan HRT ...