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SDi Decades Extreme Service Manual www.ecoer.com
May. 2023Manufacturer reserves the right to change specifications or designs without notice.
Reconnect and retry. Is the
error still displayed?
Replace the adaptor board. Is
the system running normally?
Replace indoor main board.
No
Trouble is resolved
Yes
8.7.24 EH 0b(Communication error between indoor two chips diagnosis and solution)
Description: Indoor PCB main chip does not receive feedback from another chip.
Recommended parts to prepare:
• Indoor main board
• Adapter board
Troubleshooting and repair:
Is it still displaying
the error code?
Yes
No
Yes
Shut off the power supply
and turn it on 2 minutes later.
Check the connection
wires between the adaptor
board and the main board,
is it connected properly?
Yes
No
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