![background image](http://html1.mh-extra.com/html/midea/ic-si-a-1205/ic-si-a-1205_service-manual_1791255044.webp)
44
9.2.2 Indoor / outdoor units communication error diagnosis and solution(E1)
Yes
Yes
Measure Vs, is it moving alternately
between positive value and negative
value?
(Vs is the voltage between S and N of
outdoor unit.)
Yes
Power off, then turn on the unit 5 seconds
later(reconnect the power wire).Is the error
still displaying after several minutes?
No
Yes
Change the outdoor main PCB.
Power on. Is the error extinguished?
Check all the wirings between indoor and
outdoor, indoor main PCB and outdoor main
PCB following the wiring diagram. Are all
the wirings connected correctly?
Is the wiring to the indoor main
PCB connected correctly?
Change the indoor main PCB.
Yes
Change the outdoor main PCB.
No
Is the wiring to the outdoor m a i n
PCB connected correctly?
Power on. Is the error extinguished?
Change the indoor main PCB.
No
Содержание IC SI-A-1205
Страница 1: ...IC INVERTER SERIES Service Manual 2012 ICSI A 1205...
Страница 10: ...10 Model W D H W1 A B MOR 09HDN1 QC2 660 265 540 732 458 276 MOR 12HDN1 QC2...
Страница 12: ...12 5 Wiring Diagram 5 1 Indoor Unit MSIC 09HRDN1 QC2 MSIC 12HRDN1 QC2...
Страница 13: ...13 5 2 Outdoor Unit MOR 09HDN1 QC2 MOR 12HDN1 QC2...
Страница 24: ...24 Use torque wrench to tighten the service port cap to a torque of 18N m Be sure to check for gas leakage...