Daikin MKS-T Series Service Manual page 127

SiSG121917E
Troubleshooting
Reference
Check No.04 Refer to P.171
Part 6 Service Diagnosis
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Check the power supply voltage.
Is the
voltage fluctuation
within ±10% from the
rated value?
YES
Start operation.
Does the fan rotate?
NO
Turn off the power and rotate
the fan by hand.
Does the fan rotate
smoothly?
YES
Turn on the power and check the
fan motor voltage. (immediately
after restart)
Voltage as rated? ∗
YES
Check the capacitor's continuity.
Is there continuity?
YES
Troubleshooting for Wall Mounted and LSP Duct Type Indoor Unit
NO
YES
Check No. 04
Check Hall IC
Is there an output?
NO
YES
Check the fan motor voltage.
Voltage as rated? ∗
YES
∗ Measure the voltage
between the black and white
lead wires of the fan motor,
and check if the maximum
voltage reaches the rated
NO
voltage.
NO
Correct the power supply.
NO
Replace the fan motor or the
indoor unit PCB (control PCB).
Replace the fan motor.
NO
Replace the indoor unit PCB
(control PCB).
Replace the fan motor.
Replace the indoor unit PCB
(control PCB).
Replace the fan motor.
Replace the capacitor.
(Replace the indoor unit PCB
(control PCB).)
(R21106)
122