Daikin CMSQ200A7W1B Service Manual page 225

Troubleshooting (OP: Central Remote Controller)
Troubleshooting
214
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Were
any changes
made to the number
of units of central
equipment? (The central
equipment was connected once,
and then disconnected, or
additional central
equipment was
installed.)
NO
Have power
supplies to every central
equipment been
turned ON?
YES
Is the display of LCD OK?
YES
Check
the transmission
wiring of the equipment,
M8
on which the occurred, for
any broken wires.(To check for
broken wires, refer to information
in the "Procedure for
checking broken wires"
section. (Refer to
P.228)
Normal
YES
NO
Is the
NO
intelligent Touch
Controller used?
NO
Has the Reset
switch (located inside of
equipment) SS1 been set
to the Normal
side?
YES
Abnormal
SiBE28-805
Reset the power supplies of
every central equipment.
Turn ON the power supply of
the central equipment.
If the screen is not appearing
even tough the intelligent
YES
Touch Controller screen is
touched or the contrast
volume is operated, replace
the intelligent Touch
Controller.
Set the Reset switch (located
NO
inside of equipment)
SS1 been set to the Normal
side.
Replace the central
equipment.
Correct the wiring.
Some central equipment gets
faulty. Conduct RUN/STOP
operations on every central
equipment, and then replace
the central equipment that
cannot control the indoor unit.
Troubleshooting