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Outdoor Unit
Item
Description of operation, numerical data, and other information
Remarks
1. Pulse
motor valve
(PMV)
control
1. PMV1, 2 control (PMV1 and 2)
1) During air conditioner operation, the pulse count of a PMV (pulse motor valve) is
controlled between 90 and 1000.
2) During cooling, the PMV opening is controlled on the basis of measurements
provided by the TL temperature sensor and the Pd pressure sensor (under cool
control).
3) During heating, the PMV opening is controlled on the basis of measurements
provided by the TS and TD temperature sensors and the PS pressure sensor
(super heat control).
4) PMVs are fully closed when the air conditioner is in thermo OFF state or upon
being turned off normally or shut down due to an abnormality.
2. PMV4 control (applicable only to 14 and 16-HP outdoor units)
(MMY-MAP1404 and MAP1604 )
1) When using a small-capacity split-type heat exchanger (mainly a sub-heat
exchanger to a combination of a sub-heat exchanger and main heat exchanger)
during cooling, the pulse count of the PMV (pulse motor valve) is controlled
between 45 and 500.
The PMV4 opening is controlled on the basis of measurements provided by the
TE1 and TE2 temperature sensors.
2) During heating, the PMV4 may be used as a pressure-relief bypass valve by
opening it to a certain degree.
• During heating, PMV control
may be provided with PMV1
alone, operated at 45 pulses
(minimum), with PMV2
turned off.
PMV 1
PMV 2
1000
550
500
90
45
Minimum
Maximum
Opening of PMV1, 2
PMV 4
500
45
Minimum
Maximum
Opening of PMV4
Summary of Contents for MMY-MAP0804HT7JP
Page 23: ... 22 1 Wiring Diagrams 1 1 Outdoor Unit Models MMY MAP0804 MAP1004 and MAP1204 ...
Page 24: ... 23 Models MMY MAP1404 and MAP1604 ...
Page 35: ... 34 1 2 10 Slim Duct Type AP024 AP027 Models MMD AP0244SPH MMD AP0274SPH ...
Page 38: ... 37 1 2 13 High Wall Type 3 series Models MMK AP0073H AP0093H AP0123H AP0153H AP0183H AP0243H ...
Page 52: ... 51 2 5 Parts Layout in Outdoor Unit 8 10 12HP Model MMY MAP0804 MAP1004 MAP1204 ...
Page 53: ... 52 14 16HP Model MMY MAP1404 MAP1604 ...
Page 57: ... 56 2 7 2 Inverter P C board for compressor MCC 1596 A3 IPDU ...
Page 323: ......