[
IX
Troubleshooting ]
- 206 -
HWE1113B
GB
2. MA remote controller transmission
The communication between the MA remote controller and the indoor unit is performed with current tone burst.
(1) Symptoms caused by noise interference on the transmission line
If noise is generated on the transmission line, and the communication between the MA remote controller and the indoor unit
is interrupted for 3 minutes in a row, MA transmission error (6831) will occur.
(2) Confirmation of transmission specifications and wave pattern
A
,
B
:
No
polarit
y
A
c
ross
terminal
No.
1-2
:
Power
suppl
y
(
9
V
to
12VDC)
S
atis
f
ies
t
h
e
f
ormula
12
mse
c
/bit
5%
Voltage
among
terminals
must
be
between
DC
9
and
12
V.
TB1
5
A
B
1
2
MA
remote
c
ontroller
Transmission
wave
f
orm
(A
c
ross
terminal
No.1
-
2)
DC
9~
12V
Logi
c
1
Logi
c 0
Logi
c
1
Logi
c
1
12mse
c
12mse
c
12mse
c
12mse
c
Indoor
unit
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 ...