MULTI TYPE

10-3.Work procedure after Repair
When vacuuming in the repaired outdoor unit, follow the procedure described below.
(1) Fully open PMV1 and 2 and PMV4 (MMY-MAP1404 and MAP1604 only) in accordance with the table below.
Note: PMV full-opening operation via short-circuiting of the CN30 pins is automatically undone after 2 minutes,
causing the valves to fully close. To maintain fully open state, turn off the power switch of the outdoor unit
within 2 minutes of the short-circuiting of the CN30 pins.
SW12
Bit 1 Bit 2 Bit 3 Bit 4
CN30
PMV operation
OFF OFF OFF OFF Short-circuit PMV1 and 2 fully open for 2 minutes.
OFF ON OFF OFF Short-circuit PMV4 fully opens for 2 minutes.
(2) Be sure to perform vacuuming in from the three check joints shown in the diagram below (liquid pipe, discharge
pipe and suction pipe).
M
Right-side
Fan motor
Fan
Main heat exchanger
(TO)
PMV1
PMV2
Right-side sub-heat exchanger
Left-side
PMV4
(TE2)
(TE1)
Main heat exchanger
Left-side sub-heat exchanger
Check valve
Check valve
4-way valve
High-pressure sensor
(TS1)
(SV6)
SV
SV
(TL)
Fusible
plug
(SV3D)
SV
Oil separator
(SV2)
Low-pressure sensor
Liquid tank
(SV41)
SV
SV
(SV42)
SV
Accumulator
(TD1)
Highpressure
(SV3C)
SW
SV
(TD2)
Highpressure
SW
Highpressure
SW
(SV43)
(TD3)
(TK4)
Compressor
1
(Inverter)
Compressor
2
(Inverter)
Compressor
3
(Inverter)
(TK1)
(TK2)
(TK3)
(TK5)
Oil pipe
SV
(SV3E)
SV
(SV3F)
(SV3A)
SV
Check valve
SV
(SV3B)
Check valve
Liquid-side
service valve
Gas-side
service valve
Balance pipe
packed valve
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