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SiBE121135
Troubleshooting for SA Indoor Unit - FCQG, FFQ, FHQ, FDBQ, FBQ Series
Service Diagnosis
295
6.10 Field Setting Abnormality
Remote
Controller
Display
UA
Method of
Malfunction
Detection
Malfunction
Decision
Conditions
Incorrect field setting
Supposed
Causes
Defective indoor unit PCB
Defective outdoor unit PCB
Defective power supply PCB
Indoor-outdoor, indoor-indoor unit transmission wiring
Defective remote controller wiring
Troubleshooting
Connect the wirings correctly.
Replace the indoor unit PCB.
Normal
Connect the wirings correctly.
Check the power supply system
inside the indoor unit.
Could be incorrect wiring.
Check again.
YES
YES
NO
NO
Connect the remote controller
correctly.
YES
NO
NO
YES
Remove the jumper.
NO
YES
Set the field setting correctly.
YES
NO
NO
NO
YES
YES
(R17253)
Is the remote
controller connected to
one or more indoor
units?
Is the remote
controller wiring jumped
between indoor
units?
Is the field
setting correct?
Do the service
monitor LED (HAP)
on all indoor unit
PCB blink?
Are the wirings
between indoor unit and
outdoor unit correctly
connected?
Is 220 ~ 240
VAC between No.1
and 3 of the terminal
board for transmission
(indoor unit)?
Does the system conduct
normal operation?
Are the wirings
between indoor unit and
outdoor unit correctly
connected?
Turn the power supply off
once, and back on to restart.
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Содержание 3MXS40K2V1B
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