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Cooling mode
Indoor modification angle
100
o
C<discharging temp.
+50degree/30seconds, it will stop until up to the max. permitted
opening angle
90
o
C< discharging temp.<=100
o
C Keep the angle
<=90
o
C
-5degree/30seconds, and reduce to 0 degree gradually
Heating mode
Indoor modification angle
100
o
C<discharging temp.
+50degree/30seconds, it will stop until up to the max. permitted
opening angle
90
o
C< discharging temp.<=100
o
C Keep the angle
<=90
o
C
-5degree/30seconds, and reduce to 0 degree gradually
2.3.3 4-way valve control in heating
Unitary: 50s later after compressor start up, the 4-way valve start to operate. When compressor stops or unit is
not in heating mode, the 4-way valve is closed after compressor stop for 2 minutes and 55s.
compressor ON
OFF
4-way valve ON
OFF
50
S
(
E
)
2 minutes and 55s
Multi: Protection when 4-way valve can not reverse in heating: 10 minutes later after compressor startup, if
indoor coil average temp. is below 15degree and keeps for 1 minute, the unit will stop and occur the 4-way
valve protection.
compressor ON
OFF
4-way valve ON
OFF
15
S
(
E
)
2 minutes and 55s
2.3.4 Electric heater control
If compressor has not run for a long time, the refrigerant will deposit on the bottom of compressor and mix with
the refrigeranr oil. When re-startup, because low pressure reduces, refrigerant will be segregated from the
refrigerant oil and cause soam in the oil, which will make compressor exhaust a lot of oil. Therefore please stop
heating the compressor bottom to ensure the low pressure in startup period should not go down greatly.
• Ambient temp. TA≤27degree, when compressor stops, the electric heater will be electrified.
• When TA≥32degree, or compressor running, the electric heater will be off.
Heater ON
OFF
Ambient temp. TA(
℃
)
27
32
2.3.5 Control of defrosting in heating
In heating mode, defrosting temp. sensor will check the frosting condition of outdoor heat exchanger and make
defrosting control.
A: Enter condition:
Unitary: After the unit is in heating for 10 minutes and compressor run for 45 minutes in all , according to check
Содержание AB25S2SC1FA
Страница 1: ...SYJS 04 2017 REV A Edition 2017 04 service manual R32...
Страница 3: ...1 Part 1 General Information 1 Indoor outdoor unit models 2 2 Feature 3...
Страница 14: ...12 AB25S2SC1FA AB35S2SC1FA AD25S2SC1FA AD35S2SC1FA 420 370 892 850 185 640 90 760 152 2 Dimension unit mm...
Страница 23: ...21 5 Installation For AB25S2SC1FA AB35S2SC1FA 1 Installation procedure...
Страница 24: ...22 AB25S2SC1FA AB35S2SC1FA AB25S2SC1FA AB35S2SC1FA...
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Страница 26: ...24...
Страница 27: ...25 AB25S2SC1FA AB35S2SC1FA...
Страница 28: ...26...
Страница 29: ...27 For AD25S2SC1FA AD35S2SC1FA Installation procedure AD25S2SS1FA AD35S2SS1FA...
Страница 30: ...28 AD25S2SS1FA AD35S2SS1FA AD25S2SS1FA AD35S2SS1FA...
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Страница 32: ...30 AD25S2SS1FA AD35S2SS1FA...
Страница 33: ...31...
Страница 38: ...36 21mm AD50S2SM1FA AD71S2SM1FA Unit model The size of drain opening...
Страница 39: ...37...
Страница 54: ...52 2 Dimension 1U71S2SM1FA 860 633 unit mm...
Страница 91: ...89 R32 R32 R32 R32 R32 R32 R32 R32 R32 10 2 Read before installation...
Страница 92: ...90 3 R32 R32 R32 R32 R32 R32 R32...
Страница 93: ...91 R32 R32 R32 R32 R32 R32 R32 R32 10A HFC 410A...
Страница 96: ...94 10 5 Air tightness test...
Страница 97: ...95 R32 R32 10 6 Vacuuming...
Страница 123: ...121 PCB 0011800410RA 1U71S2SG1FA Power module 0011800377C 1U71S2SG1FA...
Страница 182: ...Haier Commercial Air Condition Web Http www haier com Haier reserves the right to make change without any notice...