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Since the indications cover various units, the corresponding parts listed below may not be present in some models.
(1) OPERATION lamp
(2) TIMER lamp
(3)
OPERATION TIMER
ON/OFF
INDOOR UNIT
(1) Self-diagnostics Lamps
INDICATION ON INDOOR UNIT
....
OFF
DIAGNOSIS CONTENTS POSSIBLE MALFUNCTION
ROOM TEMP. SENSOR TROUBLE
I/D HEAT EXCHANGER
TEMP. SENSOR TROUBLE
HUMIDITY SENSOR TROUBLE
COMPRESSOR TEMP. SENSOR
TROUBLE
O/D HEAT EXCHANGER
TEMP. SENSOR TROUBLE
O/D AIR TEMP. SENSOR TROUBLE
I/D-O/D COMMUNICATION TROUBLE
(SERIAL COMMUNICATION TROUBLE)
O/D UNIT EXTERNAL ROM TROUBLE
CURRENT PEAK CUT
HIC CIRCUIT TROUBLE
POWER TR CIRCUIT TROUBLE
PAM CIRCUIT TROUBLE
ACTIVE CIRCUIT TROUBLE
O/D SYSTEM COMM FAILURE,
OLR OPERATION, O/D POWER
OPEN PHASE, O/D FREEZING
COMPRESSOR DISCHARGE TEMP.
OVERHEATING PREVENTION
I/D FAN OPERATION TROUBLE
GAS-LOSS PREVENTION
DC COMPRESSOR DRIVE
CIRCUIT TROUBLE
O/D DC FAN OPERATION TROUBLE
FREEZING-PREVENTION OPERATION
4-WAY VALVE SWITCHING TROUBLE
ZERO-CROSS TROUBLE
O/D CURRENT SENSOR ERROR
....
BLINKING
....
ON
TIMER
OPERATION
(3)
...
(2)
..
(1)
.
(1) OPEN OR SHORT CIRCUIT IN SENSOR
(2) POOR CONTACT AT CONNECTOR OR OPEN CIRCUIT AT
TERMINAL PRESS-FIT LOCATION (FOR HUMIDITY SENSOR,
THIS REPRESENTS SHORT-CIRCUIT DETECTION ONLY.)
(3) I/D PCB FAILURE (I/D = INDOOR)
(1) OPEN OR SHORT CIRCUIT IN SENSOR
(2) POOR CONTACT AT CONNECTOR OR OPEN CIRCUIT AT
TERMINAL PRESS-FIT LOCATION
(3) O/D PCB FAILURE (O/D = OUTDOOR)
O/D PCB FAILURE
(1) MIS-WIRING (2) AC POWER FAILURE (3) BLOWN FUSE
(4) POWER RELAY FAILURE (5) I/D OR O/D PCB FAILURE
(6) O/D FAN MOTOR FAILURE (7) REACTOR FAILURE
(8) HIGH-PRESSURE SW FAILURE (9) OLR FAILURE (10) MAGNETIC COIL FAILURE
(1) HIC OR POWER TR FAILURE (2) O/D FAN NOT OPERATING
(3) INSTANTANEOUS POWER STOPPAGE (4) SERVICE VALVE NOT OPENED.
(5) O/D FAN BLOCKED (6) CONTINUOUS OVERLOAD OPERATION
(7) COMPRESSOR FAILURE (8) O/D PCB FAILURE
(1) EXTERNAL ROM DATA FAILURE (2) O/D PCB FAILURE
(1) INSTANTANEOUS POWER STOPPAGE (2) HIC OR POWER TR FAILURE
(3) O/D PCB FAILURE
(1) O/D PCB FAILURE
(2) O/D POWER VOLTAGE TROUBLE
(1) ELECTRIC EXPANSION VALVE FAILURE (2) CHOKED CAPILLARY TUBE
(3) INSUFFICIENT GAS (4) CONTINUOUS OVERLOAD OPERATION
(5) O/D FAN NOT OPERATING (6) O/D PCB FAILURE
(1) FAN MOTOR FAILURE (2) CONNECTOR CONTACT FAILURE
(3) I/D PCB FAILURE
(1) 4-WAY VALVE FAILURE (HEAT PUMP MODEL ONLY)
(2) O/D PCB FAILURE
(1) SERVICE VALVE NOT OPENED (2) INSUFFICIENT GAS
(1) OPEN PHASE (2) O/D PCB FAILURE
(1) FAN MOTOR FAILURE (2) CONNECTOR CONTACT FAILURE
(3) O/D PCB FAILURE
(1) MIS-WIRING (2) BLOWN FUSE (3) POWER RELAY FAILURE
(4) O/D PCB FAILURE (5) COMPRESSOR FAILURE
(1) I/D FAN SYSTEM TROUBLE (2) INSUFFICIENT GAS
(3) OPERATION AT LOW TEMPERATURE
8FA2-5251-12500-1
S01F10
F02
F13
F04/F12
F09/F12-F18
F08/F21-F24
F27
E05
P26
F31
P16
P07
P03
P01
P19
P15
P29
P22
E07/P04/P05
P20/P27
P11
S02
S03
S04
S05
S06
S07
E01
E02
E03
E04
E05
E06
E07
E08
E09
E10
E11
E12
E13
ERROE
CODE
ALARM
CODE
37