Mitsubishi Electric PURY-M200YNW-A1 Service Handbook page 346

[8-13 Parts Replacement Instructions (Outdoor Unit) ]
(13A) Install the pipe below four-way valve (21S4a) and in the middle by brazing at the three areas shown in Figure 13.
Figure 13
(14A) Install the pipe below four-way valve (21S4a) and on the front by brazing at the three areas shown in Figure 14.
Figure 14
This step completes the replacement procedure for four-way valve (21S4a). Re-place the components that were removed as
they were.
BS_08_L
Four-way valve (21S4a)
Area to be
brazed
Four-way valve (21S4a)
Area to be
brazed
Use the parts included with
four-way valve (21S4a).
LEV (LEV2d)
Reinstall these pipes.
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