Troubleshooting Guide (Cu-2Wz71Ybe5); Self Diagnosis Function (Outdoor Led Diagnosis Table) - Panasonic WH-ADF0309J3E5CM Service Manual

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
Abnormality
(Indoor
or
model:
protection
CS-XX /
control
S-XX /
WH-XX)
H11 / E04 / Indoor/outdoor
H90 abnormal
communication
H12 / E16 / Indoor unit
H12 capacity
unmatched
H15 / F04 / Compressor
H15 temperature
sensor
abnormality
H16 / H03 / Outdoor current
F46 transformer (CT)
abnormality
H27 / F08 / Outdoor air
F36 temperature
sensor
abnormality
H28 / F06 / Outdoor heat
F42 exchanger
temperature
sensor 1
abnormality
H30 / F04 / Compressor
F40 discharge
temperature
sensor
abnormality
H32 / F07 / Outdoor heat
F43 exchanger
temperature
sensor 2
abnormality
H33 / P05 / Indoor / outdoor
H95 misconnection
abnormality
LED LED LED LED LED
6 5 4 3
○
○
○
○ ○ ○
○
○
LED Abnormality Protection
2 1 judgement operation
○ After Indoor fan
operation only
for 1 operation
minute can start
by entering
into force
cooling
operation
○ 90s after
power
supply
○ ○ Continuous
for 5s
○ -
○ Continuous
for 5s
○ ○ Continuous
for 5s
Continuous
for 5s
(after
compressor
ON for
more than
5 minutes)
Continuous
for 5s
○ -
244
Problem
Indoor/outdoor
communication
not establish
- Total indoor
capability more
than maximum
limit or less than
minimum limit, or
number of indoor
unit less than two.
- Compressor
temperature
sensor open or
short circuit
- Current
transformer faulty
or compressor
faulty
- Outdoor air
temperature
sensor open or
short circuit
- Outdoor heat
exchanger
temperature
sensor 1 open or
short circuit
- Compressor
discharge
temperature
sensor open or
short circuit
- Outdoor heat
exchanger
temperature
sensor 2 open or
short circuit
- Indoor and
outdoor rated
voltage different
Check location
 Indoor/outdoor
wire terminal
 Indoor/outdoor
PCB
 Indoor/outdoor
connection wire
 Indoor/outdoor
connection wire
 Indoor/outdoor
PCB
 Specification
and combination
table in
catalogue
 Compressor
temperature
sensor lead wire
and connector
 Outdoor PCB
faulty or
compressor
faulty
 Outdoor air
temperature
sensor lead wire
and connector
 Outdoor heat
exchanger
temperature
sensor 1 lead
wire and
connector
 Compressor
discharge
temperature
sensor lead wire
and connector
 Outdoor heat
exchanger
temperature
sensor 2 lead
wire and
connector
 Indoor and
outdoor units
check