Mitsubishi Air Conditioner PUMY-P48NKMU1-BS

(1) Remove the service panel. (See Figure 1)

(2) Remove the top panel. (See Figure 1)

(3) Remove the front cover panel. (Refer to procedure 13 (3))

(4) Remove the back cover panel. (Refer to procedure 13 (5))

(5) Remove the electrical parts box. (See Photo 4)

(6) Remove the valve bed. (Refer to procedure 8 (4))

(7) Remove the cover panel (front). (Refer to procedure 8 (5))

(8) Remove the cover panel (rear). (Refer to procedure 8 (6))

(9) Remove the side panel (R). (Refer to procedure 8 (7))

Remove the bypass valve coil fixing screw (M4 × 6)

Remove the bypass valve coil by sliding the coil upward

Remove 4-way valve coil fixing screw (M5 × 7)

Remove the 4-way valve coil by sliding the coil toward you

Disconnect the connector 21S4 (green) on the multi controller circuit board in the electrical parts box

Refer to Figure 1 for service panel removal

Disconnect the connectors on the multi controller circuit board

Loosen Clamp and Remove Thermistors

Loosen the clamp for the lead wire in the rear of the electrical parts box

Pull out the thermistors from the sensor holder

(1) Remove the service panel. (See Figure 1)

(2) Remove the top panel. (See Figure 1)

(3) Remove the cover panel (front). (Refer to procedure 8 (5))

(4) Remove the cover panel (rear). (Refer to procedure 8 (6))

(5) Remove the side panel (R). (Refer to procedure 8 (7))

(6) Remove the electrical expansion valve coil. (See Photo 10,11)

(7) Remove the electrical parts box. (See Photo 4)

(9) Remove the welded part of electrical expansion valve.