Daikin MC401VE - Remote Controller Fails to Operate Equipment

SiE74-202 Troubleshooting
Troubleshooting 23
1.3 Remote Controller Fails to Operate Equipment
Method of
Malfunction
Detection
Malfunction
Decision
Conditions
Switches on main unit work properly, but remote controller fails to operate equipment.
Supposed
Causes
 Noise generated by fluorescent lamps

Faulty remote controller

Faulty PCB
Troubleshooting
Check location conditions.
Check batteries in remote
controller.
Battery consumption
Replace remote controller
Replace display PCB
Does problem
remain after new batteries
are installed?
NO
Check location conditions
Does
different remote
controller fail to operate
equipment?
NO
Are there
fluorescent lamps
nearby?
NO
(EF004)
Change installation location by
referring to operation manual.
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
YES
YES
YES