74
12.18 External OFF/ON Control
Communication circuit between indoor unit and external controller is as per below.
External
Controller
Panasonic
PCB
CN-THERMO
17
18
5V
12V_4
R25
1k
R23
10k
R1
1
4
2
3
ZD2
PC1
G2 G2
C30
0.01µ
16V
Maximum length of communication cable is 20 meter.
Control content:
External Control Switch
Control Panel OFF/ON
Control Panel Power LED
System Status
ON
ON
ON
ON
ON
OFF
OFF
OFF
OFF
ON
ON
OFF
OFF
OFF
OFF
OFF
REMOTE
ON
ON
ON
ON
OFF
OFF
UNIT
OFF
OFF
OFF
ON
CONTROLLER
During EXTERNAL SW OFF,
display “EXT SW OFF”
LED
REMOTE
CONTROLLER
SIGNAL
EXTERNAL
CONTROLLER
SWITCH
OPERATION
ACTUAL
HEATER
BOOSTER
QUIET
SETTING
STATUS
SERVICE
AUTO
HEAT
COOL
TANK
HEATER
FORCE
°C
°C
ON
OFF
MON TUE WED THU
FRI
SAT SUN
hr
hr
kwh
* During External Switch OFF condition, it is allow to change the setting and also timer operation.
Содержание WH-MHF09G3E8
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