14.3

Error Code Table

 

 

Diagnosis

Abnormality / Protection control

Abnormality Judgment

Emergency

display

Operation

 

 

H00

 

No abnormality detected

-

Normal operation

H11

 

Indoor / Outdoor abnormal

> 1 min after starting

Indoor fan operation

 

communication

operation

only

 

 

H12

 

Connection capability rank abnormality

Continuously for 90 sec

-

 

after power supplied

 

 

 

 

H14

 

Indoor intake air temperature sensor

Continue for 5 sec.

-

 

abnormality

 

 

 

 

H15

 

Outdoor compressor temperature sensor

Continue for 5 sec.

-

 

abnormality

 

 

 

 

H16

 

Outdoor current transformer open circuit

-

-

 

 

 

 

 

H19

 

Indoor fan motor mechanism locked

7 occurrences

-

 

continuously

 

 

 

 

H23

 

Indoor heat exchanger temperature

Continue for 5 sec.

 

sensor abnormality

 

 

 

 

 

H27

 

Outdoor air temperature sensor

Continue for 5 sec.

 

abnormality

 

 

 

 

 

H28

 

Outdoor heat exchanger temperature

Continue for 5 sec.

 

sensor abnormality

 

 

 

 

 

 

 

 

 

 

H30

 

Discharge temperature sensor

Continue for 5 sec.

 

 

abnormality

 

 

 

 

 

H33

 

Indoor / outdoor wrong connection

-

-

H38

 

Indoor / outdoor mismatch (brand code)

-

-

H64

 

Outdoor high pressure sensor

Continue for 1 minutes

-

 

abnormality

 

 

 

 

H97

 

Outdoor fan lock abnormality

2 occurrences within 30

 

 

 

minutes

 

 

 

 

 

H98

 

Indoor temperature rise abnormality

-

-

 

 

 

 

 

H99

 

Indoor heat exchanger freeze prevention

-

-

 

protection

 

 

 

 

F11

 

4 way valve switching failure *

4 occurrences within 30

-

 

minutes

 

 

 

 

F17

 

Indoor standby units freezing abnormality

3 times happen within

-

 

40 minutes

 

 

 

 

 

 

 

 

 

F90

 

System and compressor microcomputer

2 occurrences within 5

-

 

communication error(for S10*** only)

seconds

 

 

 

F90

 

Power factor correction abnormality

4 occurrences within 20

-

 

minutes

 

 

 

 

F91

 

Refrigerant cycle abnormal

2 occurrences within 20

-

 

minutes

 

 

 

 

F93

 

Outdoor compressor abnormal revolution

4 occurrences within 20

-

 

minutes

 

 

 

 

F95

 

Cooling high pressure protection

4 occurrences within 20

-

 

minutes

 

 

 

 

F96

 

Intelligent power transistor overheating

-

-

 

protection

 

 

 

 

 

 

 

 

 

F97

 

Compressor temperature rise protection

4 times occurrence within

-

 

control

20 minutes

 

 

 

F98

 

Total running current protection

3 times occurrence within

-

 

20 minutes

 

 

 

 

F99

 

Outdoor direct current (DC) peak

7 times occurrence

-

 

detection

continuously

 

 

 

 

 

 

 

 

Primary location to verify

Internal / external cable connection

Indoor / outdoor PCB

-

Intake air temperature sensor (defective or disconnected)

Compressor temperature sensor (defective or disconnected)

Outdoor PCB

IPM (Power transistor) module

Indoor PCB

Fan motor

Heat exchanger temperature sensor (defective or disconnected)

Outdoor temperature sensor (defective or disconnected)

Outdoor heat exchanger temperature sensor (defective or disconnected)

Outdoor discharge temperature sensor (defective or disconnected)

Indoor / outdoor supply voltage

-

High pressure sensor

Lead wire and connector

Outdoor fan motor locked

Air filter dirty

Air circulation short circuit

Insufficient refrigerant

Air filter dirty

4-way valve

v-coil

Check indoor/outdoor connection wire and pipe

Indoor heat exchanger sensor lead wire and connector

Expansion valve lead wire and connector.

Compressor

Outdoor PCB

Outdoor PCB

No refrigerant ( 3-way valve is closed)

Outdoor compressor

Outdoor refrigerant circuit

Excess refrigerant

Improper heat radiation

IPM (Power transistor)

Insufficient refrigerant

Compressor

Excess refrigerant

Improper heat radiation

Outdoor PCB

IPM (Power transistor)

Compressor

Note:

“○” – Frequency measured and fan speed fixed

* ”– For cooling only model, it is the indication when indoor heat exchanger sensor or indoor air intake sensor has abnormality.

The memory data of error code is erased when the power supply is cut off, or press the Auto Switch until “beep” sound heard following by pressing the CHECK button at remote control.

Although operation forced to stop when abnormality detected, emergency operation is possible for certain errors (refer to Error Code Table) by using remote control or Auto OFF/ON button at indoor unit. However, the remote control signal receiving sound is changed from one “beep” to four “beep” sounds.

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Panasonic CU-S9NKU-1, CS-S18NKU-1, CS-S12NKUW-1, CS-S22NKU-1, CS-S9NKUW-1 Error Code Table, Abnormality / Protection control

CS-S9NKUW-1, CS-S22NKU-1, CU-S18NKU-1, CS-S18NKU-1, CS-S12NKUW-1 specifications

Panasonic has long been a leader in the HVAC industry, and its latest range of air conditioning units—including the CU-S9NKU-1, CU-S12NKU-1, CU-S22NKU-1, CS-S12NKUW-1, and CS-S18NKU-1—showcases innovative features and robust technologies designed to enhance home comfort while reducing energy consumption.

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