Panasonic CU-KS18NKU Technical & Service Manual page 48

(1) Self-diagnostics Lamps
INDOOR UNIT
Since the indications cover various units, the corresponding parts listed below may not be present in some models.
INDICATION ON INDOOR UNIT
QUIET TIMER OPERATION
(3) (2) (1)
CODE DIAGNOSIS CONTENTS
S01
ROOM TEMP. SENSOR TROUBLE
I/D HEAT EXCHANGER
S02
TEMP. SENSOR TROUBLE
S03
HUMIDITY SENSOR TROUBLE
COMPRESSOR TEMP. SENSOR
S04
TROUBLE
O/D HEAT EXCHANGER
S05
TEMP. SENSOR TROUBLE
S06
O/D AIR TEMP. SENSOR TROUBLE
S07
O/D CURRENT SENSOR ERROR
I/D-O/D COMMUNICATION TROUBLE
E01
(SERIAL COMMUNICATION TROUBLE)
HIC CIRCUIT TROUBLE
E02
POWER TR CIRCUIT TROUBLE
E03
O/D UNIT EXTERNAL ROM TROUBLE
E04
CURRENT PEAK CUT
PAM CIRCUIT TROUBLE
E05
ACTIVE CIRCUIT TROUBLE
COMPRESSOR DISCHARGE TEMP.
E06
OVERHEATING PREVENTION
I/D FAN OPERATION TROUBLE
E07
4-WAY VALVE SWITCHING TROUBLE
E08
ZERO-CROSS TROUBLE
E09 GAS-LOSS PREVENTION
DC COMPRESSOR DRIVE
E10
CIRCUIT TROUBLE
E11
O/D DC FAN OPERATION TROUBLE
O/D SYSTEM COMM FAILURE,
E12
OLR OPERATION, O/D POWER
OPEN PHASE, O/D FREEZING
E13
FREEZING-PREVENTION OPERATION
(1) OPERATION lamp
(2) TIMER lamp
(3) QUIET lamp
OPERATION button
REMOTE CONTROL receiver
.... OFF .... BLINKING
POSSIBLE MALFUNCTION
(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 FAILURE (2) INSUFFICIENT GAS
(3) OPERATION AT LOW TEMPERATURE
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8FA2-5251-11100-2