Communication Error Between Wired Controller And Indoor Unit - Toyotomi KURO Mini Service Manual

2.2 Communication error between wired controller and indoor unit

Main check points:
(1) Connection wire of wired controller
(2) Wiring terminal
(3) Wired controller
(4) Main board of indoor unit
connection wire of wired controller
Replace with a new controller
with the same model for indoor
unit
Start
Check whether the
and main board of the indoor
unit is loose.
N
Replace the
wired controller
Eliminate
malfunction
N
End
Connect the wired controller and
Y
indoor unit correctly according to
the circuit diagram firmly
Eliminate
malfunction
Y
Y
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