Mitsubishi Electric PURY-M200YNW-A1 Service Handbook page 400

[8-14 HBC Maintenance Instructions (Applicable to main and sub HBCs) ]
Flowchart for air vent operation (Turn on DIP SW002-3.)
Air 1 Intermittent operation of water pump (20 min)
Air 2 Water supply to all indoor units (20 min)
Water supply to individual port
Air 3
Operation of all indoor units
Air 4
in the Heating mode (20 min)
(1) The operation can be forced to stop by turning on DIP SW002-4.
(2) If it is found during any step that air has not been discharged to the desired degree, repeat the air discharge operation from the
beginning.
(3)
discharge operation from the beginning.
3. Final step
SW001-2 and 001-2
BS_08_L
(10 min per port)
The operation is performed to
discharge air from the water
circuits. [Air1]
Supplying water to all indoor units
lightly removes the air from the
system. [Air2]
Supplying water to individual port
removes the air from the indoor
units more thoroughly. [Air3]
Heating operation of all indoor
units extracts and releases
saturated air from the water
• Effective only when DIP SW002-3 is turned
ON.
• Individually executed with DIP SW001-10
(only after the outdoor unit is connected)
• Air 4 will be skipped when the outside
temperature is at or above 25°C.
chapter 8 -
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