Panasonic CU-E18CKR - Page 93

memory (abnormality detected), four “beep” sounds will be heard
and Power LED will light on. Otherwise, one “beep” sound is
heard.
If “CHECK” button is press again during Cooling operation using test run operation mode for
30 seconds, the diagnosis mode will turn off.
Error Codes Table
Diagnosis
display
Abnormality / Protection control Abnormality
Judgement
Emergency
operation
Primary location
to
H11
Indoor / outdoor abnormal
communication
> 1 min after
starting
operation
Indoor fan
operation only
-Internal / external cable
connections
-Indoor / Outdoor PCB
H14 Indoor intake air temperature
sensor abnormality
Continue for 5
sec.
—
-Intake air temperature
sensor
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 merchanism
lock
— —
-Indoor PCB
-Fan motor
H23 Indoor heat exchanger
temperature sensor
abnormality
Continue for 5
sec.
O
(Cooling only)
-Heat exchanger
temperature
(defective or disconnected)
H26 Ion abnormality
— —
-Indoor PCB
-Ionizer
H27 Outdoor air temperature
sensor abnormality
Continue for 5
sec.
O -Outdoor temperature
sensor
or disconnected)
H28 Outdoor heat exchanger
temperature sensor
abnormality
Continue for 5
sec.
O
-Outdoor heat exchanger
temperature
sensor (defective or
disconnected)
H30 Discharge temperature sensor
abnormality
Continue for 5
sec.
—
-Discharge temperature
sensor
H33 Indoor/Outdoor wrong
connection
— —
-Indoor/Outdoor supply
voltage
H97 Outdoor Fan Motor lock
abnormality
— —
-Outdoor PCB
-Outdoor Fan Motor
H98 Indoor high pressure
protection
— —
-Air filter dirty
-Air circulation short
circuit
H99 Indoor heat exchanger anti-
freezing protection
— —
-Insufficient refrigerant
-Air filter dirty