Mitsubishi Electric PUHY-P250YNW-A Service Handbook page 265

[8-12 Parts Replacement Instructions ]
(18) Before removing the front heat exchanger, protect the surrounding electrical components and the pipe cover with a
recommended cloth soaked in water, and then remove the braze from six areas. (See Figure 13.)
To remove the rear heat exchanger, remove the braze from four areas. (See Figure 14.)
Remove the braze from the
areas encircled in the figure.
Removing the front heat exchanger
(Figure 13)
(19) To remove the front heat exchanger, loosen the screws on the right side of the right rear pillar. (4 screws on a standard
model or 3 screws on a high-efficiency model) (See Figure 15.)
To remove the rear heat exchanger, loosen the screws on the back of the right rear pillar. (3 screws on a standard model
or 2 screws on a high-efficiency model) (See Figure 16.)
Remove the screw holding the pillar to the rear heat exchanger support. (See Figure 16.)
Removing the front heat exchanger
(Figure 15)
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Remove the braze from the
areas encircled in the figure.
Removing the rear heat exchanger
Connection of the pillar to the
front heat exchanger (4 screws on
a standard model or 3 screws on
a high-efficiency model)
Loosen the screws.
(Figure 14)
Connection of the pillar to the rear
heat exchanger (3 screws on a
standard model or 2 screws on a
high-efficiency model)
Removing the rear heat exchanger
(Figure 16)
Loosen the screws.
Unscrew the screws.
BS_08_C