Mitsubishi Electric Mr.Slim PUZ-HA42NKA Service Manual page 51

(1) Operation summary of the linear expansion valve
LEV
3
2
M
5
1
6 4
<Output pulse signal and the valve operation>
Output
(Phase)
1 2 3
1
ON ON OFF
2
OFF ON ON
3
OFF OFF OFF
4
OFF OFF OFF
(2) Linear expansion valve operation
Close
Extra tightning (about 32 pulse)
OCH567
Output
5 6 7 8
4
OFF OFF OFF ON
OFF
OFF OFF OFF OFF
ON
ON ON OFF OFF
ON
OFF OFF ON ON ON
Open
500 pulse
Opening a valve
all the way
Pulse number
Outdoor controller board
DC12V
Gray 1
4
Orange 3
3
Red 4
Yellow
5
2
Black 6
1
Connector LEV-A
LEV-B
LEV-C
A
B A
Drive circuit
4
3
2
1
B A
-