[C06 trouble] (“1:1 model” connection interface)
Replace central controller.
Is there a noise source?
Did a power failure occur?
Is the power turned on?
Is the power supply wiring connected correctly?
Are A and B communication lines normal?
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Are Uh (U3, U4) communication lines normal?
Can the indoor unit be normally controlled
from the remote controller?
Is the network address changed
from the wired remote controller?
Check connection of A and B terminal blocks.
Correct communication line of remote controller.
* 1
Is connection of connector normal?
Replace power supply transformer on
“1:1 model” connection interface (MCC-1440).
Can the other indoor units
be normally controlled from the central controller?
Or is the operation status of indoor unit reflected?
* 1
CN51 of “1:1 model” connection interface (TCC-LINK adapter) P.C. board (MCC-1440) and
CN050 of indoor P.C. board
Eliminate noise, etc.
Replace indoor P.C. board (MCC-1643).
Clear the check code.
Turn on the power.
Correct power wiring.
Correct connection of connector.
Uncontrolled
(Same to others)
Uncontrolled
YES
YES
YES
NO
YES
NO
YES
YES
NO
NO
NO
YES
YES
NO
YES
NO
YES
NO
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