Troubleshooting (Op: Central Remote Controller); M1" Pc Board Defect - Daikin CMSQ200A7W1B Service Manual

Troubleshooting (OP: Central Remote Controller)

4. Troubleshooting (OP: Central Remote Controller)
M1
" " PC Board Defect
4.1
M1
Remote
Controller
Display
Applicable Central remote controller
Schedule timer
Models
Method of Detect an abnormality in the DIII-NET polarity circuit.
Malfunction
Detection
Malfunction When + polarity and - polarity are detected at the same time.
Decision
Conditions
Supposed
Causes
Troubleshooting Replace the central remote controller.
212
Defect of central remote controller PC board
Defect of Schedule timer PC board
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Turn ON the power supply of
the central equipment
M1
with displayed once again.
M1
Is the displayed again?
M1
Without displayed
M1
With displayed
SiBE28-805
Replace the central
equipment.
Central equipment: Normal
It is supposed that the
malfunction results from
external factors (e.g. noises)
from other equipment.
Troubleshooting