5. CONTROL OUTLINE
5-1.
Outdoor Unit
Item
Description of operation, numerical data, and other information
Remarks
1. Pulse
motor valve
(PMV)
control
1. PMV1, 2, 3 control (PMV 1 and 2, 3)
1) During air conditioner operation, the pulse count of a PMV1 (pulse motor valve 1) is
controlled between 75 pls and 3000 pls, During air conditioner operation, the pulse
count of a PMV2, 3 is controlled between 25 pls and 500 pls.
2) During cooling, the PMV opening is controlled on the basis of measurements provided
by the TL temperature sensor and the Pd sensor (subcool control).
3) During heating, the PMV opening is controlled on the basis of measurements
provided by the TS, TD and TG temperature sensor and the Ps sensor
(subcool control).
4) PMVs are fully closed when the air conditioner is in thermostat OFF state or upon
being tuned off normally or shut down due to an abnormality.
2.
PMV 4 control
1)
During cooling, the pulse count of a PMV 4 (pulse motor valve 4) is controlled
between 30 pls and
35
0 pls. The PMV 4 opening is controlled on the basis of
measurements provided by the TL3 temperature sensor and Pd sensor
(subcool control). or TS3 temperature sensor and Ps sensor (superheat control).
2)
During heating, the pulse count of a PMV4 is controlled between 30 pls and 350 pls.
The PMV 4 operation is controlled by the pulse count of PMV opening of indoor unit
and zone judgment. (Indoor refrigerant excess control)
3)
PMVs are fully closed when the air conditioner is in thermostat OFF state, upon being
turned off normally or shut down due to an abnormality.
25
500
Opening
of PMV2, 3 (pls)
Minimum
Maximum
PMV2, 3
75
3000
Opening of PMV1 (pls)
Minimum
Maximum
PMV1
30
350
Opening of
PMV4
during cooling
(pls)
Minimum
Maximum
PMV4
30
350
Opening of
PMV4
during heating (pls)
Minimum
Maximum
PMV4
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Summary of Contents for MMY-MUP0801HT7JP
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