
·
When unit stops, the reason that system still checks the low pressure : in a long time stop, make
protection for the compressor on the condition 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 pressure 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.
TinA
VE
-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.
236
Содержание YHKMXH009BARX-FX
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Страница 106: ...3 Piping diagram Liquid pipe Gas pipe Filter Filter EEV Fan Indoor heat exchanger 104 ...
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Страница 156: ...4 Wiring connection YJU3YH019BARXA X 154 ...
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Страница 213: ...PCB 0151800175 YH3MXH009BARX GX YH3MXH012BARX GX YH3MXH018BARX GX YH3MXH024BARX GX 211 ...
Страница 221: ...PCB 0011800241C 219 ...
Страница 222: ...PCB 0151800054A 220 ...
Страница 223: ...PCB 0151800076 PCB 0151800075 221 ...
Страница 224: ...Power module 0010400352C Power module 0150400908 222 ...
Страница 225: ...Power module 0150400644A Power module 0150400939 223 ...
Страница 226: ...Power module 0151800105 224 ...
Страница 227: ...Power module 0150400643B Filter board 0150400699 225 ...
Страница 228: ...Filter board 0010452726 Filter board 0150400567 Dip switch setting 226 ...