UPDATED A5 Panasonic technical handbook F 2025 - Flipbook - Page 36
RAC - Fault Codes
Diagnosis Code Abnormality / Protection control Abnormality Judgment
H32
H33
H34
H36
H37
H38
Outdoor heat exchanger
temperature sensor 2
abnormality
Indoor / Outdoor misconnection
abnormality
Outdoor heat sink temperature
sensor abnormality
Outdoor gas pipe temperature
sensor abnormality
Outdoor liquid pipe
temperature sensor abnormality
Indoor / Outdoor mismatch
(brand code)
Protection Operation
Heating protection
operation only
Cooling protection
operation only
Outdoor heat exchanger
temperature sensor 2 open or short
circuit
Indoor and Outdoor rated voltage
different
Outdoor heat sink temperature
sensor open or short circuit
Outdoor gas pipe temperature
sensor open or short circuit
Outdoor liquid pipe temperature
sensor open or short circuit
-
Brand code not match
Continuous for 5sec
-
-
-
Continuous for 2sec
-
Continuous for 5sec
Continuous for 5sec
-
H39
Abnormal indoor operating unit 3 times happen within 40
or standby units
minutes
-
H41
Abnormal wiring or piping
connection
-
-
H59
ECONAVI sensor abnormality
Continuous for 25sec
-
H64
Outdoor high pressure sensor
abnormality
Continuous for 1 minute
-
H67
nanoe abnormality
H70
Light sensor abnormality
Abnormal communication
between indoor & wireless LAN
module
H85
36
nanoe stop for 5 minutes for 3
times
Continuous for 24 hours, 15 days Communication error for 10
minutes for 3 times
Problem
-
Check location
Outdoor heat exchanger temperature
sensor 2 lead wire and connector
Indoor and Outdoor units check
Outdoor heat sink sensor
Outdoor gas pipe temperature sensor
lead wire and connector
Outdoor liquid pipe temperature
sensor lead wire and connector
Check indoor unit and outdoor unit
Check Indoor / Outdoor connection
Wrong wiring and connecting pipe, wire & connection pipe - Indoor heat
expansion valve abnormality, indoor exchanger sensor lead wire and
heat exchanger sensor open circuit connector - Expansion valve and lead
wire and connector
Check Indoor / Outdoor connection
Wrong wiring and connecting pipe,
wire & connection pipe - Expansion
expansion valve abnormality
valve and lead wire and connector
ECONAVI sensor open or short
ECONAVI sensor (defective or
circuit
disconnected) - ECONAVI PCB
High pressure sensor open circuit
High pressure sensor - Lead wire and
during compressor stop
connector
nanoe faulty
PCB - nanoe system - High voltage
Light sensor open or short circuit
Light sensor (defective or disconnect)
Wireless LAN LED Off or timer LED
blinking
Network adaptor - Router - Network
coverage
