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Outdoor LEV
The valve opening angle changes in proportion to the number of pulses.
(Connections between the outdoor unit’s MAIN board and SLEV, LEV1, LEV2 (outdoor electronic expansion valve).)
1
SLEV, LEV1
Pulse Signal Output and Valve Operation
LEV Valve Closing and Valve Opening Operations
* When the power is switched ON, a 520 pulse valve
opening signal is output to make sure the valve’s
position, so that it is definitely at point A. (The pulse
signal is output for approximately 17 seconds.)
* When the valve operates smoothly, there is no sound
from the LEV and no vibration occurs, but when the
valve is locked, it emits a noise.
* Whether a sound is being emitted or not can be de-
termined by holding a screwdriver, etc. against it,
then placing your ear against the handle.
* If there is liquid refrigerant inside the LEV, the sound
may become lower.
Output (Phase)
Output State
No.
1
2
3
4
5
6
7
8
ø
1
ON
OFF OFF OFF OFF OFF ON
ON
ø
2
ON
ON
ON
OFF OFF OFF OFF OFF
ø
3
OFF OFF ON
ON
ON
OFF OFF OFF
ø
4
OFF OFF OFF OFF
ON
ON
ON
OFF
Output pulses change in the following orders when the
Valve is Closed 1
→
2
→
3
→
4
→
5
→
6
→
7
→
8
→
1
Valve is Open 8
→
7
→
6
→
5
→
4
→
3
→
2
→
1
→
8
*1. When the LEV opening angle does not change, all
the output phases are off.
2. When the output is out of phase or remains ON con-
tinuously, the motor cannot run smoothly, but move
jerkily and vibrates.
Outdoor MAIN Board
(Connectors CNLV1,
CNLV2)
Driver Circuits
Valve Opening
Valve Closing
Fully Open
480 pulses
Pulse Count
V
alv
e Opening Angle (Flo
w Rate)
Содержание CITY MULTI PUHY-400YMF-B
Страница 13: ... 10 Noise filter NF DC reactor DCL Noise filter box Noise Filter Box Rear of the controller box ...
Страница 16: ... 13 FANCON board CNV CNW CNU CNFC2 ...
Страница 17: ... 14 RELAY board CN51C2 CNOUT2 CNRT2 CN52F CN52C2 CNCH ...
Страница 20: ... 17 CONT board SWU2 CNTR SWU1 CNFC1 SW3 SW2 CNS1 M NET transmission CN20 Power supply 1 N 3 L1 ...
Страница 26: ... 23 ...
Страница 50: ... 47 ...
Страница 152: ... 149 Model PUHY 400YMF B 500YMF B ...