Mitsubishi Electric PURY-M200YNW-A1 Service Handbook page 445

[8-16 Sub-HBC Maintenance Instructions ]
Operation procedures
6) Unscrew the fixing screws (x3) on each
hanging bracket (x4), and remove the
hanging brackets.
7) Unscrew the fixing screws each (x4) on
the right and left panels, and remove the
right and left panels.
8) Remove the clip (shown below) from the
valve block ASSY, and disconnect all
pipes.
Clip
9) Unscrew the fixing screws (x8) on the
metal plate that is holding the valve
block.
10) Replace the valve block ASSY with a
new one (service parts).
It is recommended to replace all nipples
with new ones after replacing the valve
block, because the nipples may have
been damaged by the O-rings, resulting
in water leakage.
178
- chapter 8
Illustrations
Hanging brackets
Left panel
Disconnect all pipes.
Right panel
Unscrew the fixing screws
on the metal plate that is
holding the valve block.
Valve block ASSY
Operation
location
Under the
ceiling
BS_08_L