D.C. Inverter Multi VRF Modular
57
Debugging is enabled in cooling mode
(debugging mode, auto-selected by
system).
Error occurs during debugging in
cooling mode.
Error of other modules occurs during
debugging in cooling mode.
Outdoor pipeline and valves are not
normal.
System detects error in indoor pipeline.
XXXX is the project no. of the faulted
IDU. 3s later, error code U8 is
displayed. For example, IDU no. 100
has U8 error, then LED3 displays like
this: 01 (2s later) 00 (2s later) U8, and
repeat again.
B If heating mode is selected, relevant display is as below:
Debugging is enabled in heating mode
(debugging mode, auto-selected by
system).
Error occurs during debugging in
heating mode.
Error of other modules occurs during
debugging in heating mode.
Outdoor pipeline and valves are not
normal.
System detects error in indoor pipeline.
XXXX is the project no. of the faulted
IDU. 3s later, error code U8 is
displayed. For example, IDU no. 100
has U8 error, then LED3 displays like
this: 01 (2s later) 00 (2s later) U8, and
repeat again.
Step 18:
if there’s no error during operation for about 40min, system will automatically confirm
that debugging is finished and then stop. System resumes standby condition and displays as
below:
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