Panasonic S-71WF3E - Troubleshooting Guide (CU-2 WZ71 YBE5); Self Diagnosis Function (Outdoor LED Diagnosis Table)

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25. Troubleshooting Guide (CU-2WZ71YBE5)
25.1 Self Diagnosis Function (Outdoor LED Diagnosis Table)
 The display screen of wireless remote control unit and the self-diagnosis LEDs (green) on the outdoor printed
circuit board in the outdoor unit can be used to identify the location of the problem.
Refer to the table below to identify and solve the cause of the problem, and then re-start the air conditioner
system.
 If the problem is solved and operation returns to normal.
LED 1 illuminates and others LED are off.
Diagnosis
display
(Indoor
model:
CS-XX /
S-XX /
WH-XX)
Abnormality
or
protection
control
LED
6
LED
5
LED
4
LED
3
LED
2
LED
1
Abnormality
judgement
Protection
operation
Problem Check location
H11 / E04 /
H90
Indoor/outdoor
abnormal
communication
○
After
operation
for 1
minute
Indoor fan
only
operation
can start
by entering
into force
cooling
operation
Indoor/outdoor
communication
not establish
 Indoor/outdoor
wire terminal
 Indoor/outdoor
PCB
 Indoor/outdoor
connection wire
H12 / E16 /
H12
Indoor unit
capacity
unmatched
○
90s after
power
supply
- Total indoor
capability more
than maximum
limit or less than
minimum limit, or
number of indoor
unit less than two.
 Indoor/outdoor
connection wire
 Indoor/outdoor
PCB
 Specification
and combination
table in
catalogue
H15 / F04 /
H15
Compressor
temperature
sensor
abnormality
○ ○
Continuous
for 5s
- Compressor
temperature
sensor open or
short circuit
 Compressor
temperature
sensor lead wire
and connecto
r
H16 / H03 /
F46
Outdoor current
transformer (CT)
abnormality
○ ○
- - Current
transformer faulty
or compressor
faulty
 Outdoor PCB
faulty or
compressor
faulty
H27 / F08 /
F36
Outdoor air
temperature
sensor
abnormality
○ ○
Continuous
for 5s
- Outdoor air
temperature
sensor open or
short circuit
 Outdoor air
temperature
sensor lead wire
and connecto
r
H28 / F06 /
F42
Outdoor heat
exchanger
temperature
sensor 1
abnormality
○ ○ ○
Continuous
for 5s
- Outdoor heat
exchanger
temperature
sensor 1 open or
short circuit
 Outdoor heat
exchanger
temperature
sensor 1 lead
wire and
connecto
r
H30 / F04 /
F40
Compressor
discharge
temperature
sensor
abnormality
○ ○ ○
Continuous
for 5s
(after
compressor
ON for
more than
5 minutes)
- Compressor
discharge
temperature
sensor open or
short circuit
 Compressor
discharge
temperature
sensor lead wire
and connector
H32 / F07 /
F43
Outdoor heat
exchanger
temperature
sensor 2
abnormality
○
Continuous
for 5s
- Outdoor heat
exchanger
temperature
sensor 2 open or
short circuit
 Outdoor heat
exchanger
temperature
sensor 2 lead
wire and
connecto
r
H33 / P05 /
H95
Indoor / outdoor
misconnection
abnormality
○ ○
- - Indoor and
outdoor rated
voltage different
 Indoor and
outdoor units
check