AY-XPC15PU
3 – 6
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)
Operation (Green)
Plasmacluster(Blue)
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.
{ {
{
{
(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.
{ {
{
{ {
(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
o
*Remark
The malfunction No. is calculated using the following way.
Example)
Indoor unit lamp
o
Lamp Calculation
Main
Sub
16 8
4
2
1
Timer (orange)
O O O O O
Operation (Green)
O
O
4+1=5
5
Plasmacluster (blue)
O
2
2
IPM CHECK METHOD
1. Turn off the power.
2. Make sure that the electrolytic capacitor voltage is approx. 0 V.
3. Remove all connectors of the IPM PWB.
4. Measure the resistance between terminals using a tester.
Measuring points of terminals are shown in the figure below.
Analog tester
Normal Resistance
Analog tester
Normal Resistance
-
-
+
-
TP
TN
∞
*(Few M
Ω
)
TU
TN
∞
(Few M
Ω
)
V
T
U
T
W
T
V
T
r
e
t
s
e
t
l
a
t
i
g
i
D
y
b
:
e
u
l
a
v
)
(
*
W
T
IPM printed wiring board
REMOVE
REMOVE
TN
TP
TU
TV
TW
REMOVE
