Field Setting Abnormality - Daikin RMXS-L Series Service Manual

Troubleshooting for FFQ Series
5.9

Field Setting Abnormality

UA
Error Code
Method of Error
Detection
Error Decision Incorrect field setting
Conditions
 Defective indoor unit PCB
Supposed
 Defective outdoor unit PCB
Causes
 Defective power supply PCB
 Indoor-outdoor, indoor-indoor unit transmission wiring
 Defective remote controller wiring
Troubleshooting
Turn the power supply off
once, and back on to restart.
175
Be sure to turn off the power switch before connecting or disconnecting
Caution
connectors, or parts may be damaged.
Is the remote
YES
controller connected to
one or more indoor
units?
NO
Is the remote
YES
controller wiring jumped
between indoor
units?
NO
NO
Is the field
setting correct?
YES
Do the service
NO
monitor LED (HAP)
on all indoor unit
PCB blink?
YES
NO
Does the system conduct
normal operation?
YES
Are the wirings
NO
between indoor unit and
outdoor unit correctly
connected?
YES
Is 220 ~ 240
VAC between No.1
YES
and 3 of the terminal
board for transmission
(indoor unit)?
NO
Are the wirings
NO
between indoor unit and
outdoor unit correctly
connected?
YES
SiUS181305E
Connect the remote controller
correctly.
Remove the jumper.
Set the field setting correctly.
Connect the wirings correctly.
Check the power supply system
inside the indoor unit.
Could be incorrect wiring.
Check again.
Connect the wirings correctly.
Replace the indoor unit PCB.
Normal
(R17253)
Troubleshooting