Mitsubishi Split-Type, Heat Pump Air Conditioner PUHZ-P140YHA2

Disconnect the power supply cable from terminal block

Disconnect the indoor/outdoor connecting wire from terminal block

Disconnect the following connectors from the controller circuit board

Loosen the clamps, fasteners and cable strap for the lead wire in the electrical parts box and separator

Remove the terminal cover to disconnect the COMP lead wire

Remove the electrical parts box fixing screws, then slide the electrical parts box upward to remove it

Refrigerant recovered from the unit completely

Refrigerant not released in the air

Cycle charged with specified amount of refrigerant after service

Filter drier installed during service

Cylinder for R410A is a syphon type

Charging performed with the cylinder of syphon stood vertically

(1) Remove the service panel. (See Figure 1, 2)

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

(3) Disconnect the connector TH7/6 (RED) on the controller circuit board in the electrical parts box. (Refer to procedure 3)

(4) Loosen the fastener for the lead wire in the electrical parts box.

[Removing the thermistor <Ambient> (TH7) for V model]

(5) Remove the cont. box top fixing screws (4 on top/4 x 10) to remove the cont. box top.

(6) Loosen the lead wire from the edge cover in the electrical parts box.

(7) Loosen the clamp for the lead wire in the electrical parts box.

(8) Pull out the thermistor <Ambient> (TH7) from thermistor holder.

Disconnect the connector, TH3 (WHT), and TH32 (BLK) on the controller circuit board in the electrical parts box

Loosen the fastener for the lead wire on the controller circuit board in the electrical parts box

Loosen the clamp for the lead wire on separator

Pull out the thermistor <Liquid> (TH3) from thermistor holder

Remove the top damper, then pull out the thermistor <Comp. surface> (TH32) from thermistor holder

(1) Remove the electrical parts box. (Refer to procedure 3)

(2) Loosen the clamp for the lead wire on separator.

[Removing the lead wire for high pressure switch]

(3) Disconnect the lead wire from the high pressure switch.

[Removing the 4-way valve coil]

(3) Remove the 4-way valve coil fixing screw (1 for front/ M5) to remove the 4-way valve coil.

(4) Slide the 4-way valve coil forward to remove it.

(3) Loosen the lead wires fixed to the pipes with bands.