Mitsubishi Electric PURY-M200YNW-A1 Service Handbook page 292

[8-8 Troubleshooting LEV, FCV Problems ]
3) LEV valve closing and opening operation
Valve closed
A
E
B
80 - 100 pulses
BS_08_L
D
C
Valve open
Fully open: 1400 pulses
Pulses
*When the power is turned on, the valve closing signal of 2200 pulses
will be output from the outdoor unit circuit board to LEV to fix the valve position.
It must be fixed at point A.
When the valve operates smoothly, no sound from LEV or no vibration
occurs, however, when the pulses change from E to A in the chart or
the valve is locked, a big sound occurs.
*Whether a sound is generated or not can be determined by
holding a screwdriver against it, then placing your ear against the handle.
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