(1) Self-diagnostics Lamps

(3)

(2)

(1)

ION

TIMER

OPERATION

lamp

lamp

lamp

If there is no trouble, the lamps neither blink nor illuminate.

 

 

 

 

 

 

 

 

 

 

Since the indications cover various units, the corresponding parts listed below may not be

present in some models.

 

 

 

 

 

 

 

 

 

 

Indication on indoor unit

.... OFF

 

 

.... Blinking

.... Illuminated

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ion

Timer

Operation

Code

Diagnostics item

 

 

 

 

Diagnostics contents

( 3 )

( 2 )

( 1 )

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

S01

Room temperature sensor failure

 

(1) Sensor open circuit or short circuit

 

 

 

 

 

 

 

 

 

(2) Contact failure at connector or open circuit at terminal crimping location (short-circuit

 

 

 

S02

Indoor heat exchanger sensor failure

 

 

 

 

detection only for the humidity sensor)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

S03

Humidity sensor failure

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

S04

Compressor temperature sensor failure

 

 

 

 

 

 

 

 

 

 

 

 

 

SH(Suction) sensor failure

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

S05

Outdoor heat exchanger sensor failure

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

S06

Outdoor air temperature sensor failure

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

S07

Electrical current detection failure

 

(1) Operating frequency is 45 Hz or higher and less than 0.5 A of current is flowing.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

E01

Indoor/outdoor communications failure

 

(1) Miswiring (2) AC power failure

(3) Blown fuse

(4) Power relay failure

 

 

 

(serial communications)

 

(5) Indoor or outdoor circuit board failure

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

E02

HIC circuit failure

 

(1) HIC or power Tr failure (2) Outdoor fan does not turn.

(3) Instantaneous power outage

 

 

 

 

(4) Service valve not opened.

(5) Outdoor fan blocked. (6) Continuous overload operation

 

 

 

 

 

 

(7) Compressor failure (8) Outdoor circuit board failure

 

 

 

 

 

 

 

 

 

 

 

 

 

 

E03

Outdoor unit external ROM failure

 

(1)External ROM data failure

(2) External ROM installation failure

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

E04

Peak current cut-off

 

(1)Operating current is 20 A or higher.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

E05

PAM circuit failure

 

(1)PAM circuit abnormal voltage

(2) Protection for current

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

E06

Compressor discharge overheat

 

(1)Electric expansion valve failure (2) Capillaries choked

(3) Shortage of refrigerant

 

 

 

prevention activated.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

E07

Indoor fan operating failure

 

(1) Locked fan motor (2) Contact failure at connector

 

 

 

 

 

Indoor zero-cross failure

 

(3) Noise, instantaneous power blackout, or power waveform error due to lightning or other factor

 

 

 

 

 

 

 

 

E08

4-way valve switching failure

 

(1) 4-way valve failure (heat pump model only)

 

 

 

 

 

 

(2) Indoor heat exchanger temperature sensor disconnected.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

E09

No-refrigerant protection

 

(1) Service valve not opened.

(2) Shortage of refrigerant

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

E10

DC compressor drive circuit failure

 

(1) Open phase

(2) Outdoor circuit board failure

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

E11

Outdoor fan operating failure

 

(1) Contact failure at connector

(2) Outdoor circuit board failure

 

 

 

 

 

 

 

 

 

 

 

 

 

E12

Outdoor system communications failure

 

(1) Miswiring in inter-unit

(2) Outdoor circuit board failure

 

 

 

 

 

 

 

 

 

 

 

 

 

 

E13

Freeze-prevention operation activated.

 

(1) Indoor fan system failure

(2) Shortage of refrigerant

(3) Low-temperature operation

 

 

 

 

 

 

 

 

NOTE

If the operation lamp (orange) continues to blink immediately after when the power source has been supplied

 

to the air conditioner, there might be trouble with the external ROM (E14) in the indoor unit.

44

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Sanyo SAP-KRV94EHDX service manual Self-diagnostics Lamps, ION Timer Operation

SAP-KRV94EHDX specifications

The Sanyo SAP-KRV94EHDX is a cutting-edge split-type air conditioning unit that exemplifies advanced technology and efficiency. Designed for both residential and commercial spaces, this model is equipped with features that cater to various cooling and heating needs.

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The SAP-KRV94EHDX employs inverter technology, which allows the compressor to adjust its speed dynamically based on the temperature requirements of the environment. This means that the unit operates more quietly and uses less energy when maintaining a consistent temperature. The inverter system ensures that the air conditioner can quickly reach the desired cooling or heating temperature and maintain it without the frequent on-off cycles typical of traditional units.

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