Mitsubishi Electric HP120TNU-A Service Handbook page 334

[8-13 Parts Replacement Instructions ]
(23) To remove the front heat exchanger, loosen 4 screws on the right side of the right rear pillar. (See Figure 18.)
To remove the rear heat exchanger, loosen 4 screws on the back of the right rear pillar. (See Figure 19.)
Remove the screw holding the pillar to the rear heat exchanger support.
Connection of the pillar to the
front heat exchanger 4 screws
Removing the front heat exchanger
(Figure 18)
(24) Remove the heat exchanger by diagonally lifting it up, using caution not to damage the fins or the pipes.
Removing the front heat exchanger
(Figure 20)
HWE18220_GB
Connection of the pillar to the rear
heat exchanger 4 screws
Loosen the screws.
Removing the rear heat exchanger
Removing the rear heat exchanger
(Figure 21)
(Figure 19)
Loosen the screws.
Unscrew the screws.
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