Service Manual SM-Inverter_(i)
46
U2
Description
DC voltage out of range
Supposed Cause
-
Supply voltage not as specified
-
DC voltage detection circuit defective
Troubleshooting
U4
Description
Communication error (between indoor and outdoor)
Supposed Cause
-
Faulty outdoor unit PCB
-
Faulty indoor unit PCB
-
Indoor unit – outdoor unit signal transmission error due to wiring error.
-
Indoor unit – outdoor unit signal transmission error due to disturbed power supply
waveform.
-
Indoor unit- Outdoor unit signal transmission error due to breaking of wire in the
connection wires between the indoor and outdoor units.
Troubleshooting
Check the supply
voltage
Supply voltage as
specified?
Change outdoor
PCB
Correct the
power supply
Содержание SM-12-012
Страница 1: ...Service Manual SM Inverter_ i Air Conditioners Service Manual Split Inverter SM 12 012...
Страница 22: ...Service Manual SM Inverter_ i 22...
Страница 26: ...Service Manual SM Inverter_ i 26...
Страница 45: ...Service Manual SM Inverter_ i 45 Troubleshooting...
Страница 47: ...Service Manual SM Inverter_ i 47...
Страница 49: ...Service Manual SM Inverter_ i 49 ATXN FTXN 25 35 LV1B 9 ARXN RXN 25 35 LV1B 9 4 0 Wiring Connection...
Страница 50: ...Service Manual SM Inverter_ i 50 ATXN FTXN 50 60 LV1B 9 ARXN RXN50 60 LV1B 9...
Страница 51: ...Service Manual SM Inverter_ i 51 Refrigerant Diagram ATXN FTXN 25 35 50 60 LV1B 9...
Страница 52: ...Service Manual SM Inverter_ i 52 ARXN RXN 25 35 50 60 LV1B 9 Appendix Resistance value when 25 C...