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W-2WAY ECO-i SYSTEM
Outdoor Unit Repair Procedures
12. Replacing 4-way Valve
(1)
(2)
(3)
(4)
CAUTION
Brazed parts
(4 locations)
Fig. 31
12-2. When the replacement is not available from the right side of the unit
Follow the instructions of “10. Compressor” and remove the constant-speed compressor 2.
Connect the manifold gauge to the high and low-pressure outlet ports at the outdoor unit where the 4-way valve
will be replaced. Connect the manifold gauge to a nitrogen cylinder and perform nitrogen gas replacement.
Prepare the brazing kit to disconnect the brazed parts (4 locations).
Protect the check valves as shown in the figure 31.
Check valve
4-way valve
After replacing the 4-way valve, follow the instructionsin “10. Compressor”, and reinstall the removed constant-
speed compressor 2 in the outdoor unit.