Super Free Match
Service Manual
MAINTENANCE
130
3.5 Malfunction display: Communication error
Communication error
Check the
cable of indoor unit: is it
properly connected?
Measure
the
transmission line: is it
through?
Check the
transmission line between outdoor
unit and BU module: is it properly
connected?
Check the
power of the unit: is it
turn on?
Check the orientation of plug
and socet
Replace the transimission line
Turn on the power
Yes
No
Are the
address of BU modules in the
same system repeated?
Yes
Check the orientation of plug
and socet
Change the repeated address codes
Is there
any equipment which can
emit electromagnetic waves near
the unit?
Remove the equipments 1
meter away from the unit
The transimission line is too long
Refer to the recommended
transmission line
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
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