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10-3.Work procedure after Repair
When vacuuming in the repaired outdoor unit, follow the procedure described below.
<Work procedure>
(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.
(2) Be sure to perform vacuuming in from the three check joints shown in the diagram below (liquid pipe, discharge
pipe and suction pipe).
SW12
CN30
PMV operation
Bit 1
Bit 2
Bit 3
Bit 4
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.
(TL)
PMV1
4-way valve
Check valve
High-pressure sensor
(TD2)
Accumulator
(TS1)
(SV2)
Low-pressure sensor
(TE1)
M
(SV3D)
PMV2
(TK2)
(SV3B)
(TK1)
(SV3A)
(TD1)
(TK4)
(SV3E)
(TK5)
(SV41)
(SV42)
Oil pipe
PMV4
Fan
Liquid tank
(TE2)
Left-side sub-heat exchanger
(TD3)
(SV43)
(TK3)
(SV6)
(TO)
Check valve
Check valve
Check valve
(SV3F)
(SV3C)
Fusible
plug
SV
SV
SV
Oil separator
SV
SV
SV
S
V
S
V
SV
SV
S
V
Right-side
Main heat exchanger
Left-side
Main heat exchanger
Right-side sub-heat exchanger
Fan motor
High-
pressure
SW
High-
pressure
SW
High-
pressure
SW
Compressor
1
(Inverter)
Compressor
2
(Inverter)
Compressor
3
(Inverter)
Liquid-side
service valve
Gas-side
service valve
Balance pipe
packed valve