Service manual

3-21
AY-ZP35PR
Malfunction indications due to erroneous wiring during air/air heat pump installation
motpmySedom rorre gniriw tinu-retnI
”1-81“yalpsid sisongaid noitcnuflaM1
enoNyalpsid sisongaid noitcnu
flaM2
(Displays “18-0” when malfunction code is called out.)
enoNyalpsid sisongaid noitcnuflaM3
(Displays “18-0” when malfunction code is called out.)
”1-81“yalpsid sisongaid noitcnuflaM4
”1-81“yalpsid sisongaid
noitcnuflaM5
Indoor
unit
Outdoor
unit
1
N
2
1
N
2
Indoor
unit
Outdoor
unit
1
N
2
1
N
2
Indoor
unit
Outdoor
unit
1
N
2
1
N
2
Indoor
unit
Outdoor
unit
1
N
2
1
N
2
Indoor
unit
Outdoor
unit
1
N
2
1
N
2
Indoor and
outdoor
units oper-
ate.
Normal
blinking
or OFF
{{{{{
Timer(Orange)
26 1 Indoor unit
room tem-
perature
thermistor
Indoor unit room
temperature
thermistor
(1) Check connector of
thermistor for
secure installation.
(1) Replace the ther-
mistor.
{{ { Operation(Green)
{ Plasmacluster
(Blue)
(2) Check the tempera-
ture properties of
the thermistor.
(2) Replace the ther-
mistor.
{{{{{
Timer(Orange)
2 Indoor unit
pipe tem-
perature
thermistor
Indoor unit pipe
temperature
thermistor
(1) Check connector of
thermistor for
secure installation.
(1) Replace the ther-
mistor.
{{ { Operation(Green)
{ Plasmacluster
(Blue)
(2) Check the tempera-
ture properties of
the thermistor.
(2) Replace the ther-
mistor.
{{{{{
Timer(Orange)
3 Indoor unit
valve tem-
perature
thermistor
Indoor unit valve
temperature
thermistor
(1) Check connector of
thermistor for
secure installation.
(1) Replace the ther-
mistor.
{{
{
Operation(Green)
{{ Plasmacluster
(Blue)
(2) Check the tempera-
ture properties of
the thermistor.
(2) Replace the ther-
mistor.
Problem
symptom
Outdoor
unit indi-
cation
(LED1)
Indoor unit Malfunc-
tion No.
Content of diagnosis Check point Action
Lamp Main Sub Main Sub