Panasonic CS-VU18SKQ Service Manual

86
16.3 Error Code Table
Diagnosis
display
Abnormality / Protection control Abnormality Judgment
Emergency
Operation
Primary location to verify
H00 No abnormality detected - Normal operation -
H11
Indoor / Outdoor abnormal
communication
> 1 min after starting
operation
Indoor fan operation
only

Internal / external cable
connection
 Indoor / outdoor PCB
H12 Connection capability rank abnormality
Continuously for 90 sec
after power supplied
- -
H14
Indoor intake air temperature sensor
abnormality
Continue for 5 sec. -

Intake air temperature sensor
(defective or disconnected)
H15
Outdoor compressor temperature sensor
abnormality
Continue for 5 sec. -

Compressor temperature sensor
(defective or disconnected)
H16 Outdoor current transformer open circuit - -

Outdoor PCB
 IPM (Power transistor) module
H19 Indoor fan motor mechanism locked
7 occurrences
continuously
-

Indoor PCB
 Fan motor
H23
Indoor heat exchanger temperature
sensor abnormality
Continue for 5 sec.
○

Heat exchanger temperature
sensor (defective or disconnected)
H25 nanoe-G abnormality -
○

Indoor PCB
 nanoe-G PCB
H27
Outdoor air temperature sensor
abnormality
Continue for 5 sec.
○

Outdoor temperature sensor
(defective or disconnected)
H28
Outdoor heat exchanger temperature
sensor abnormality
Continue for 5 sec.
○

Outdoor heat exchanger
temperature sensor (defective or
disconnected)
H30
Discharge temperature sensor
abnormality
Continue for 5 sec. -

Outdoor discharge temperature
sensor (defective or disconnected)
H33 Indoor / outdoor wrong connection - -

Indoor / outdoor supply voltage
H38 Indoor / outdoor mismatch (brand code) - - -
H97 Outdoor fan lock abnormality
2 occurrences within 30
minutes
 Outdoor fan motor locked
H98 Indoor temperature rise abnormality - -

Air filter dirty
 Air circulation short circuit
H99
Indoor heat exchanger freeze prevention
protection
- -

Insufficient refrigerant
 Air filter dirty
F11 4 way valve switching failure *
4 occurrences within 30
minutes
-

4-way valve
 v-coil
F90
System and compressor microcomputer
communication error (for VU9*** only)
2 occurrences within 5
seconds
-

Compressor
 Outdoor PCB
F90 Power factor correction abnormality
4 occurrences within 20
minutes
-
 Outdoor PCB
F91 Refrigerant cycle abnormal
2 occurrences within 20
minutes
-

No refrigerant (3-way valve is
closed)
F93 Outdoor compressor abnormal revolution
4 occurrences within 20
minutes
-
 Outdoor compressor
F95 Cooling high pressure protection
4 occurrences within 20
minutes
-
 Outdoor refrigerant circuit
F96
Intelligent power transistor overheating
protection
- -

Excess refrigerant
 Improper heat radiation
 IPM (Power transistor)
F97
Compressor temperature rise protection
control
4 times occurrence within
20 minutes
-

Insufficient refrigerant
 Compressor
F98 Total running current protection
3 times occurrence within
20 minutes
-

Excess refrigerant
 Improper heat radiation
F99
Outdoor direct current (DC) peak
detection
7 times occurrence
continuously
-

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.

Panasonic CS-VU18SKQ Specifications

General

Brand	Panasonic
Model	CS-VU18SKQ
Category	Air Conditioner
Language	English