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[
IX
Troubleshooting ]
- 193 -
HWE1113B
GB
In the case of MA remote controller
3. Phenomena
"HO" or "PLEASE WAIT" display on the remote controller does not disappear, and no operation is performed even if the button
is pressed. ("HO" or "PLEASE WAIT" display will normally turn off 5 minutes later after the power on.)
(1) Cause
1) The power for the M-NET transmission line is not supplied from the outdoor unit.
2) Short-circuited transmission line
3) Incorrect wiring of the M-NET transmission line on the outdoor unit.
Disconnected wire for the MA remote controller or disconnected line to the terminal block.
The indoor transmission line is connected incorrectly to the transmission terminal block for centralized controller (TB7).
The male power supply connectors on the multiple outdoor units are connected to the female power supply switch connector
(CN40).
In the system to which the power supply unit for transmission lines is connected, the male power supply connector is connect-
ed to the female power supply switch connector (CN40) on the outdoor unit
4) Disconnected M-NET transmission line on the indoor unit.
5) Disconnected wire between the terminal block for M-NET line (TB5) of the indoor unit and the indoor unit board (CN2M) or
disconnected connector.
6) Incorrect wiring for the MA remote controller
Short-circuited wire for the MA remote controller
Disconnected wire for the MA remote controller (No.2) and disconnected line to the terminal block.
Reversed daisy-chain connection between groups
Incorrect wiring for the MA remote controller to the terminal block for transmission line connection (TB5) on the indoor unit
The M-NET transmission line is connected incorrectly to the terminal block (TB15) for the MA remote controller.
7) The sub/main setting of the MA remote controller is set to sub.
8) 2 or more main MA remote controllers are connected.
9) Indoor unit board failure (MA remote controller communication circuit)
10) Remote controller failure
11) Outdoor unit failure (Refer toIX [8] Troubleshooting Using the Outdoor Unit LED Error Display.)(page 239)
(2) Check method and remedy
1)
When 2) and 3) above apply, check code 7102 will be displayed on the self-diagnosis LED.
Refer to IX [4] -8- (2) "Troubleshooting transmission power circuit of outdoor unit" for how to check item 1 in the flow chart
above.(page 228)
YE
S
YE
S
YE
S
N
O
N
O
YE
S
YE
S
N
O
N
O
N
O
C
h
e
ck
t
h
e
sel
f
-diagnosis
LED
Error
f
ound
?
Error
f
ound
?
Repla
c
e
t
h
e
ME
remote
c
ontroller
wit
h
t
h
e
MA
remote
c
ontroller
C
h
e
ck f
or
5
)
and
6
).
1
7
-
30
V
?
S
ame
s
y
mptom
f
or
all
units
in
a
s
y
stem
wit
h
one
outdoor
unit
?
C
h
e
ck
1).
C
h
e
ck
2)
and
3
).
C
h
e
ck 4
).
Corre
c
t
t
h
e
error.
Corre
c
t
t
h
e
error.
Measure
voltages
o
f
t
h
e
terminal
blo
ck f
or
transmission
line
(TB
5
)
on
t
h
e
indoor
unit.
Is
t
h
e
error
c
ode
7
1
0
2
displa
y
ed
?
Indoor
unit
board
or
MA
remote
c
ontroller
f
ailure
Summary of Contents for City Multi CMB-WP108V-G
Page 1: ...AIR CONDITIONER 2014 Service Handbook PURY WP200 WP250YJM A CMB WP108V G Model 3rd edition ...
Page 11: ... 2 HWE1113B GB ...
Page 27: ... I Read Before Servicing 18 HWE1113B GB ...
Page 29: ... 20 HWE1113B GB ...
Page 57: ... 48 HWE1113B GB ...
Page 70: ... III Outdoor Unit Components 61 HWE1113B GB 2 Power supply circuit board ...
Page 71: ... III Outdoor Unit Components 62 HWE1113B GB ...
Page 73: ... 64 HWE1113B GB ...
Page 81: ... IV Remote Controller 72 HWE1113B GB ...
Page 83: ... 74 HWE1113B GB ...
Page 89: ... 80 HWE1113B GB ...
Page 97: ... 88 HWE1113B GB ...
Page 127: ... 118 HWE1113B GB ...
Page 135: ... VIII Test Run Mode 126 HWE1113B GB ...
Page 137: ... 128 HWE1113B GB ...
Page 253: ... 244 HWE1113B GB ...