2.2 Indoor unit function
2.2.1 Sign definition
Indoor
outdoor
Tai
Tc1
Tc2
Tm
Tao
Toci
Tc
Te
Ts
Td
Ambient
temp
Outlet
pipe
temp.
Inlet
pipe
temp
mid coil
temp Ambient
temp
Thick pipe
of heat
exchanger
mid
condenser
temp.
Defrost
temp
Compressor
suction
temp.
Compressor
discharging
temp.
Tcomp1,2
Tset
Temp. compensation
Set
temp.
2.2.2 Dry operation
Tai
<
16
o
C, indoor unit stops running and sends stop-unit signal to outdoor.
Tai≤Tset, indoor motor runs at low speed and sends stop-unit signal to outdoor
2.2.3 Fan operation
Indoor fan motor will run as the fan speed set on the remote controller or the wired controller and indoor unit
will send the stop-unit signal to outdoor.
2.2.4 Auto operation
A: If the unit enters Auto mode for the first time, the system will adjust the operation mode according to the
room temp. and the set temp.
When Tai≥Tset, entering auto cooling mode;
When Tai
<
Tset, entering auto heating mode.
B: Auto cooling mode is as the same as the cooling mode. After the thermostat is OFF for 15 minutes, if Tai+
1+Tcomp2
<
Tset, the unit will enter auto heating mode, or the unit will still stay at auto cooling mode and stop
when it reaches the set temperature; while the indoor motor will be at low speed.
C: Auto heating mode is as the same as the heating mode. After the thermostat is OFF for 15 minutes, if
Tai≥Tset+1 +Tcomp1, the unit will enter auto cooling mode, or the unit will still stay at auto heating mode;
D: In this mode, the Sleep function is available, run as cooling sleep in cooling mode and as heating sleep in
heating mode. Once sleep mode is set, the mode will not change after the unit stops for 15 minutes when it
arrives Tset.
E: Mode conversion will be confirmed after compressor has stopped for 10 minutes.
2.2.5 Abnormal operation
A: When outdoor modes from the request of indoor unit conflict, the one entering firstly will take priority.
B: After indoor receives the ON command from wired controller, it will firstly confirm the outdoor current
operation mode. If they are the same modes, indoor unit will run as the request of remote controller. If they are
different modes, the system will forbid to operate, and indoor will keep the OFF mode and send the “standby”
signal to wired controller until outdoor stops or outdoor mode the requested mode of wired controller are the
same, the unit will run as the requested mode of wired controller.
C: After indoor receives the ON command from remote controller, it will firstly confirm the outdoor current
operation mode. If they are the same mode, indoor unit will run as the request of remote controller. If they are
different modes, the system will forbid to operate, and indoor will keep the OFF mode. After setting on remote
controller, if the buzzer sounds two times, that shows abnormal operation. Indoor will run until the outdoor mode
and the requested mode of remote controller are the same.
D: In AUTO mode, when the indoor unit occurs abnormal operation, the indoor unit will keep OFF state, and the
buzzer will not sound until the outdoor mode and the requested mode of indoor unit are the same.
F: COOL (included AUTO COOL), DRY, FAN are not abnormal mode.
G: HEAT and FAN are not abnormal mode.
214
Summary of Contents for YHKMXH009BARX-FX
Page 23: ...3 Dimension 21 ...
Page 24: ...22 ...
Page 25: ...4 Piping diagram Liquid pipe Gas pipe Filter Filter EEV Fan Indoor heat exchanger 23 ...
Page 37: ...9 Installation 35 ...
Page 38: ...36 ...
Page 39: ...37 ...
Page 40: ...38 ...
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Page 42: ...40 ...
Page 43: ...41 ...
Page 56: ...3 Piping diagram Liquid pipe Gas pipe Filter Filter EEV Fan Indoor heat exchanger 54 ...
Page 67: ...7 Installation YHFMXH012 24BARX FX 65 ...
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Page 75: ...28K 60K 73 ...
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Page 104: ...3 Dimension 102 ...
Page 105: ...YHGJXH048BARX GX S YHGJXH060BARX GX S 103 ...
Page 106: ...3 Piping diagram Liquid pipe Gas pipe Filter Filter EEV Fan Indoor heat exchanger 104 ...
Page 123: ...7 Installation For AD09 24LS1ERA AD09 24SS1ERA 121 ...
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Page 129: ...YHEJXH028BARX GX S YHEJXH036BARX GX S YHEJXH048BARX GX S 127 ...
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Page 134: ...For YHGJXH048BARX GX YHGJXH060BARX GX 132 ...
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Page 146: ...2 Dimension 144 ...
Page 156: ...4 Wiring connection YJU3YH019BARXA X 154 ...
Page 186: ...9 Maintenance WARNING CAUTION 184 ...
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Page 190: ...Items to Be Checked 188 ...
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Page 202: ...For YJU3YH019BARXA X YJU4YH025BARXA X YJU4YH030BARXA X YJU5YH034BARXA X YJU5YH045BARXA X 200 ...
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Page 206: ...M 204 ...
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Page 209: ...R 207 ...
Page 210: ... 25 40 0 208 ...
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Page 213: ...PCB 0151800175 YH3MXH009BARX GX YH3MXH012BARX GX YH3MXH018BARX GX YH3MXH024BARX GX 211 ...
Page 221: ...PCB 0011800241C 219 ...
Page 222: ...PCB 0151800054A 220 ...
Page 223: ...PCB 0151800076 PCB 0151800075 221 ...
Page 224: ...Power module 0010400352C Power module 0150400908 222 ...
Page 225: ...Power module 0150400644A Power module 0150400939 223 ...
Page 226: ...Power module 0151800105 224 ...
Page 227: ...Power module 0150400643B Filter board 0150400699 225 ...
Page 228: ...Filter board 0010452726 Filter board 0150400567 Dip switch setting 226 ...