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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 1Bit 2Bit 3Bit 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.