132
· When unit stops, the reason that system still checks the low pressure : in a long time stop, make
protection for the compressor on the condi tion of great refrigerant leakage.
· The reason that low pressure switch action time is 30 seconds: when compressor stops, low pressure
does not change, so it will be shorter than the set time in operation.
(3) When compressor starts up, in 8 minutes, low pressure switch signal will be shielded.
(4) In defrosting, low pressure switch will be shielded.
(5) In oil return procedure, low pr essure switch will be shielded.
(6) In the refrigerant discharging procedure after the oil return in cooling is over, low pressure switch will
be shielded.
In addition, the system will control low pressure through the evaporator temp. TE to realize the low
pressure protection function.
In cooling, confirm through Tc2AVE:
In heating, confirm through defrosting temp. Te:
If the failure is not confirmed as the permanent protection, outdoor will not send failure code to indoor, and
indoor will not alarm.
Tin
AVE
-25
℃
-30
℃
-35
℃
-40
℃
-45
℃
Normal operation
Min. running FQY 20HZ
SV2 OFF & 20HZ
SV2 ON & 20HZ
Keep for 5 seconds, unit stops and alarm
occurs. 3 minutes later, restart up. If it
occurs 3 times in 1 hour, it will always
alarm and stop, electrify again and failure
will be cleared.
Te -30
℃
-35
℃
-40
℃
-45
℃
-50
℃
Normal operation
Min. running FQY 20HZ
SV2 OFF & 20HZ
SV2 ON & 20HZ
Keep for 5 seconds, unit stops and
alarm occurs. 3 minutes later, restart
up. If it occurs 3 times in 1 hour, it will
always alarm and stop, electrify again
and failure will be cleared.
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...
Страница 25: ...23...
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...
Страница 31: ...29...
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...