Sanyo SAP-KRV96EHDS Technical & Service Manual page 44

(1) Self-diagnostics Lamps
If there is no trouble, the lamps neither blink nor illuminate.
Since the indications cover various units, the corresponding items listed below may not be present in some models.
Indication on indoor unit
LED Clean Timer Operation
( 3 ) ( 2 )
If the operation lamp (orange) continues to blink immediately after when the power source has been supplied
NOTE
to the air conditioner, there might be trouble with the external ROM (E14) in the indoor unit.
Code Diagnostics item
( 1 )
S01
Room temperature sensor failure
S02
Indoor heat exchanger sensor failure
S03
Humidity sensor failure
Compressor temperature sensor failure
S04
SH(Suction) sensor failure
S05
Outdoor heat exchanger sensor failure
S06
Outdoor air temperature sensor failure
S07 Electrical current detection failure
Indoor/outdoor communications failure
E01
(serial communications)
E02
HIC circuit failure
E03
Outdoor unit external ROM failure
E04 Peak current cut-off
E05
PAM circuit failure
Compressor discharge overheat
E06
prevention activated.
Indoor fan operating failure
E07
Indoor zero-cross failure
E08
4-way valve switching failure
E09 No-refrigerant protection
E10
DC compressor drive circuit failure
Outdoor fan operating failure
E11
E12
Outdoor system communications failure
E13
Freeze-prevention operation activated.
.... OFF .... Blinking
Diagnostics contents
(1) Sensor open circuit or short circuit
(2) Contact failure at connector or open circuit at terminal crimping location (short-circuit
detection only for the humidity sensor)
(1) Operating frequency is 45 Hz or higher and less than 0.5 A of current is flowing.
(1) Miswiring (2) AC power failure
(5) Indoor or outdoor circuit board failure
(1) HIC or power Tr failure (2) Outdoor fan does not turn.
(4) Service valve not opened. (5)
(7) Compressor failure (8) Outdoor circuit board failure
(1) External ROM data failure (2)
(1) Operating current is 20 A or higher.
(1) PAM circuit abnormal voltage
(1) Electric expansion valve failure
(1) Locked fan motor (2) Contact failure at connector
(3) Noise, instantaneous power blackout, or power waveform error due to lightning or other factor
(1) 4-way valve failure (heat pump model only)
(2) Indoor heat exchanger temperature sensor disconnected.
(1) Service valve not opened. (2)
(1) Open phase (2) Outdoor circuit board failure
(1) Contact failure at connector
(1) Miswiring in inter-unit (2)
(1) Indoor fan system failure (2)
44
(1) OPERATION lamp
REMOTE CONTROL
receiver
(2) TIMER lamp
(3) LED CLEAN lamp
.... Illuminated
(3) Blown fuse (4) Power relay failure
(3) Instantaneous power outage
Outdoor fan blocked. (6) Continuous overload operation
External ROM installation failure
(2) Protection for current
(2) Capillaries choked (3) Shortage of refrigerant
Shortage of refrigerant
(2) Outdoor circuit board failure
Outdoor circuit board failure
Shortage of refrigerant (3) Low-temperature operation