33
Electric wiring and the application
SW11 Function
Display with digital tube LED1
～
4
3
Indoor unit
communication
checking and program
version
If communication is normal, show the indoor unit program
version (one decimal). If communication stops, normally show
“0000”
（
failing communication for 5 consecutive rounds
）
. If
communication has been abnormal, show “----”.
For example,“U4.2” means indoor unit version is V4.2.
4
Indoor unit fault
Show indoor unit fault code. If no fault, show 0.
5
Indoor unit capacity
Indoor unit capacity
（
Unit
：
HP
，
one decimal
），
1.5 HP show 1.5
6
Indoor unit expansion
valve open angle
Expansion open angle
（
Unit: pls
）
7
Indoor unit
environment temp. Tai Ambient temperature
（
Unit:
℃）
8
Indoor unit gas pipe
temp. Tc1
Gas pipe temperature
（
Unit:
℃）
9
Indoor unit liquid temp.
Tc2
Liquid pipe temperature
（
Unit:
℃）
10
Indoor unit startup
mode, actual running
speed and SCODE
code
LED1 means startup mode, O
：
stop/ C
：
cooling/ H
：
heating
LED2 means indoor units actual running speed
（
0-stop
，
1-low
speed
，
2-medium speed
，
3-high speed
），
LED3 and LED4 means SCODE code
（
0
～
15
）
.
For example, C311 mean high cooling speed
，
SCODE is 11
.
11
Indoor Unit temp.
setting Tset
Temperature setting
（
Unit:
℃）
12
Wrong wiring
inspection
0 means no failure
，
79 means wiring connection failure
（
indoor
no display
）
13
Connected valve box
number
“----” means connecting to the valve box failed.
Press SW2(UP) for 2 seconds
，
show “CCCC”
，
forcible indoor
cooling start up
Press SW1(DOWN) for 2 seconds
，
show “OFF”
，
forcible
indoor shutdown
14
Solenoid valve status
of connected valve box
LED1
：
BS4WV
：
1 ON 0 OFF――Far left
LED2
：
BSSV1
：
1 ON 0 OFF
LED3
：
BSSV2
：
1 ON 0 OFF
LED4
：
BSSV3
：
1 ON 0 OFF
Showing “----”means not connected to the valve box;
Showing“E-”+failure code means there is failure.
Press SW2(UP) for 2 seconds
，
show“HHHH”
，
forcible indoor
heating start up;
Press SW1(DOWN) for 2 seconds
，
show“OFF”
，
forcible
indoor shutdown
