Mitsubishi Heavy Industries FDCW100VNX, Technical Manual

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Service
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Control A
Control B
Outdoor air temperature (°C).
[Control A]
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(Tho-A)-(Tho-R) Fan speed
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Reduced by 10 rpm
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Retained
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[Control B]
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LPT Fan speed
More than 1.1MPa Reduced by 10 rpm
1.0MPa or more but 1.1MPa or less Retained
Less than 1.0MPa Increased by 10 rpm
4) Snow protection fan control
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anomalous stop mode.
3
5
Snow protection fan
control OFF
Snow protection fan
control ON
Outdoor air temperature (°C)
Defrosting
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and the cumulative compressor operation time after the start of
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2
4
LPT invalid
LPT detecting
Outdoor air temperature (°C)
-6
-20
-23
-27
-20 -18 -15 0 5 6 10 -10 -5
-5
-10
-15
-25
-30
-25
Outdoor air temperature (°C) [Tho-A]
Outdoor
heat
e
xchanger
temperature
(°C)
[Tho-R]
Defrost operation start
temperature zone
Defrost operation start temperature (for water system)
Defrost operation start temperature (Standard)
Defrost operation start temperature (SW3-1 ON)
-20
-24
-28.6
-20 -18 -15 0 5 6 10 -10 -5
-5
-10
-15
-25
-30
-25
Outdoor air temperature (°C) [Tho-A]
Suction
s
uturated
temperature
(°C)
[SST]
Defrost operation start
temperature zone
Defrost operation start temperature (Standard)
Defrost operation start temperature (SW3-1 ON)
Defrost operation start temperature (for water system)
Fig 4-2
Fig 4-1
Operation control function by the outdoor unit controller