Mitsubishi Electric PUHY-P250YNW-A Service Handbook page 68

[3-6 Procedure of Separating the Indoor Unit ]
To put the top and bottom sections of the unit together, follow the procedures above in the reverse order.
Check to make sure that the frame is perpendicular to the horizontal plane before putting the panels together.
When the frames will not fit back into place, loosen bolt 2 as shown in [Fig.1], place the frames, and tighten bolt 2 .
Be sure to securely tighten all screws and bolts. (tightening torque: 74N . m)
Using [Fig.4] and Table 1 as a reference, connect all connectors correctly.
Use a cable tie and bundle the wires as they were before.
Keep torch flame away from the insulation material on the drain pan and from other flammable materials when
performing brazing work. Use the shielding board that is supplied.
Perform a test run and check for abnormal sound, rattling, and water leaks.
<Model 250>
Wire
Board No. Connector
mark
CN31 1
CN20 S1
No.1 CN21 E1
CN29 G1
CN60 V1
<Model 500>
Wire
Board No. Connector
mark
CN31 1
CN20 S1
No.1 CN21 E1
CN29 G1
LEV2A V1
CN31 2
CN20 S2
No.2 CN21 E2
CN29 G2
LEV2B V2
Use a hand-lift truck to transport the units; they are heavy even when the top and bottom sections are separated.
Carrying the units by hand is dangerous and may result in personal injury if the units fall or topple over.
Exercise caution not to get your fingers caught when separating or assembling the top and bottom sections of
the unit.
BS_03_C
T able 1
Connector No. of
Parts name
color pins
White 3 Float switch
Red 2 Inlet thermistor
White 2 Liquid pipe thermistor
Black 2 Gas pipe thermistor
White 6 Linear expansion valve
T able 1
Connector No. of
Parts name
color pins
White 3 Float switch
Red 2 Inlet thermistor
White 2 Liquid pipe thermistor
Black 2 Gas pipe thermistor
White 6 Linear expansion valve
White 3 Float switch
Red 2 Inlet thermistor
White 2 Liquid pipe thermistor
Black 2 Gas pipe thermistor
White 6 Linear expansion valve
Caution
CN60
No. 1 board
Connector location on the board
[Fig. 4]
CN31
No. 1 board
CN20
CN21
CN29
LEV2B
*Same with the No. 2 board
Connector location on the board Connector location on the adapter board
[Fig. 4]
CN31
CN20
CN21
CN29
CN22
LEV2A
19
chapter 3 -