UPDATED A5 Panasonic technical handbook F 2025 - Flipbook - Page 35
RAC - Fault Codes
Diagnosis Code Abnormality / Protection control Abnormality Judgment
Protection Operation
Problem
H00
No memory of failure
-
-
H11
Indoor / Outdoor abnormal
communication
After operation for 1 minute
Normal operation
Indoor fan only operation can
start by entering into force
cooling operation
H12
Indoor unit capacity mismatch
90sec after power supply
H14
H15
H16
Indoor intake air temperature
Continuous for 5sec
sensor abnormality
Compressor temperature sensor
Continuous for 5sec
abnormality
Outdoor current transformer
(CT) abnormality
-
-
H19
Indoor fan motor mechanism
lock
H23
Indoor heat exchanger
Continuous for 5sec
temperature sensor abnormality
-
H24
Indoor heat exchanger
temperature sensor 2
abnormality
Continuous for 5sec
-
H25
Indoor ion device abnormality
Port is ON for 10sec during ion
device off
-
H27
H28
H30
35
Continuous happen for 7 times
Outdoor air temperature sensor
Continuous for 5sec
abnormality
Outdoor heat exchanger
temperature sensor 1
Continuous for 5sec
abnormality
Outdoor discharge pipe
Continuous for 5sec
temperature sensor abnormality
-
-
-
Check location
Indoor / Outdoor wire terminal Indoor / Outdoor
Indoor / Outdoor PCB - Indoor /
communication not establish
Outdoor connection wire
Total indoor capability more
Indoor / Outdoor connection
than maximum limit or less than wire - Indoor / Outdoor PCB minimum limit, or number of
Specification & combination
indoor unit less than two
table in catalogue
Indoor intake air temperature
Indoor intake air temperature
sensor open or short circuit
sensor lead wire and connector
Compressor temperature sensor Compressor temperature sensor
open or short circuit
lead wire and connector
Current transformer faulty or
Outdoor PCB faulty or
compressor faulty
compressor faulty
Fan motor lead wire and
Indoor fan motor lock or
connector - Fan motor lock or
feedback abnormal
block
Indoor heat exchanger
Indoor heat exchanger
temperature sensor open or
temperature sensor lead wire
short circuit
and connector
Indoor heat exchanger
Indoor heat exchanger
temperature sensor 2 open or
temperature sensor 2 lead wire
short circuit
and connector
-
ion device PCB
Outdoor air temperature sensor
open or short circuit
Outdoor heat exchanger
temperature sensor 1 open or
short circuit
Outdoor discharge pipe
temperature sensor open or
short circuit
Outdoor air temperature sensor
lead wire and connector
Outdoor heat exchanger
temperature sensor 1 lead wire
and connector
Outdoor discharge pipe
temperature sensor lead wire
and connector
