Troubleshooting
4-36
When the outdoor unit power is not ON - Initial Diagnosis : 1-phase products (cont.)
Yes
After replacing the main PCB and resetting the
power, check everything is normal.
Connect the power wire
(First turn off the power of the Terminal Box!)
1. Connect the power wire.
2. Turn on the Terminal Box and check whether
normal power is supplied to the outdoor unit.
No
No
Check the power parts.
(Switch off power to the
Terminal Box before inspection!)
1. Is there a fault with a fuse?
(Short-Normal, Open-Fault)
2. When the bridge diode is measured with "+ / -"
(output voltage), does the voltage exceed 290Vdc?
3. Is the power supply voltage 12V?
4. Is there a fault with a fuse of EMI PCB?
(Short-Normal, Open-Fault)
Fan Motor connector after
separating and resetting the power,
check everything is normal.
(Separate the connector after turning off the
power of the Terminal Box! When detaching
and attaching the connector during power
supply, the
motor can be damaged.)
ĺ
If it is normal, replace the
Fan Motor.
Continue
Содержание AC071MN4PKH
Страница 12: ...ProductSpecifications 2 9 2 3 4 Filter specifications Item Description CodeNo Remark FILTER AIR DB63 03764A ...
Страница 101: ...PCBDiagramandPartsList 5 4 5 1 3 Outdoor PCB Main PCB AC090 100 120 140MXAD H 1 2 3 4 5 6 8 9 10 11 12 ...
Страница 103: ...PCBDiagramandPartsList 5 6 Outdoor Unit PCB cont PF 4 INVERTER PCB SINGLE PHASE I AC090 100MXADKH 4 1 2 8 3 7 6 5 ...
Страница 105: ...PCBDiagramandPartsList 5 8 Outdoor Unit PCB cont PF 6 1 INVERTER PCB 3 PHASE I AC100MXADNH 1 2 8 4 6 5 3 7 ...
Страница 114: ...6 3 WiringDiagram ThisDocumentcannotbeusedwithoutSamsung sauthorization 3 phase PF 6 PF 6 1 Schematic Diagram ...