Daikin 2MKS40G2V1B Service Manual page 245

SiBE12-816_D
Troubleshooting
Turn the power supply off
once, and back on to restart.
Service Diagnosis
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
microcomputer
NO
normal monitors HAP on all
indoor unit PCB
blink?
YES
NO
Does the system conduct
normal operation?
YES
Troubleshooting for SA Indoor Unit - FFQ Series
Are the wirings
NO
between indoor unit and
outdoor unit correctly
connected?
YES
Is 220 ~ 240
YES
VAC between No.1 and
3 of X2M terminal
(indoor unit)?
NO
Are the wirings
NO
between indoor unit and
outdoor unit correctly
connected?
YES
Connect the remote controller
correctly.
Remove the jumper.
Set it correctly.
Connect them correctly.
Check the power supply system
inside the indoor unit.
Could be incorrect wiring.
Check again.
Connect them correctly.
Replace the indoor unit PCB.
Normal
(R13067)
234