Installation manual

[ IX Troubleshooting ]
- 309 -
HWE10050 GB
LEV
-5- LEV
LEV operation
Indoor unit LEV, and BC controller LEV1 and LEV3 (linear expansion valves) are driven by the pulse signal from the circuit
board and are controlled by a stepping motor.
(1) Indoor LEV and BC controller LEV
The valve opening changes according to the number of pulses.
1) Control boards and the LEV (Indoor unit LEV, and BC controller LEV1 (G1 type only) and LEV3)
2) Control boards and the LEV (BC controller LEV1 (Applicable only to the GA1 and HA1 types.))
Note. The connector numbers on the intermediate connector and the connector on the control board differ. Check the color of the lead wire
to judge the number.
Outdoor control board
Drive circuit
LEV
M
5
5
2
2
1
1
3
3
4
4
6
6
DC12V
Red
Intermediate connector
Brown
Blue
Orange
Yellow
White
Red OrangeWhite
Brown
Blue
Yellow
6
5
4
4
3
2
1
3
2
1
4
3
2
1
ø4
ø3
ø2
ø1
ø4
ø3
ø2
ø1
Control board
Drive circuit
LEV
M
5
2
1
3
4
6
DC12V
Brown
Blue
Orange
Yellow
White
Orange
White
Blue
Yellow
Red
6
5
4
3
2
1