Midea MS11D-18HRDN1 Сервис мануал онлайн [53/56] 624905

Midea MS11D-18HRDN1 Сервис мануал онлайн [53/56] 624905
DM13-01.01.12en Neola Inverter
Service manual 53
11.2.2 Indoor / outdoor unit’s communication error
No
Reconnect and retest
No
Yes
Yes
E1 after 8 munities
Check the wiring between indoor and outdoor
unit. Do the wires can work normal and connect
correctly?
No
Is all the wiring between terminal and
Indoor PCB connect ok?
Is all the wiring to the Outdoor PCB
connecting correctly?
Maybe the AC has
electromagnetic
interference.
Reconnect and retest
Reconnect and retest
Yes
-24V<Vs<+24V? (Vs is the
voltage between S and N).
Yes
No
Change the Indoor PCB. If the AC still
displays E1, Change the outdoor PCB.
Change the outdoor PCB. If the AC still
displays E1, Change the indoor PCB.
Return to normal
Turn off the power supply, after 1 minute,
connect the power supply, and turn on
the unit.

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