Daikin FTXM-V Series, Service Manual

Page: 106 / 172

Troubleshooting SiUS042113E
102 Part 6 Service Diagnosis
Reference
Troubleshooting
Check No.11 Refer to P.135
Check No.11
Check the power s u pply
waveform.
Check the voltage of the
connection wires on the indoor
terminal board between No. 1
and No. 3, and between No. 2
and No. 3.
YES
Blink
Replace the indoor u nit PCB
(control PCB).
Locate the ca u se of the
dist u rbance of the power
s u pply waveform, and correct
it.
NO
(R21199)
Contin u o u sly ON or OFF
NO
YES
YES
NO
Caution
Correct the indoor u nit -
o u tdoor u nit connection wires.
Replace the o u tdoor u nit PCB
(main PCB).
Replace the connection wires
between the indoor
u nit and
o u tdoor u nit.
Is LED A blinking?
Properly ins u lated?
Is there any dist u rbance?
Is there any wiring error?
Check the indoor u nit - o u tdoor
u nit connection wires.
Check the LED A on the o u tdoor
u nit PCB.
Be s u re to t u rn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
∗
Before yo u check the LED A, cancel
the standby electricity saving
f
u nction by starting fan operation
with the remote controller.
∗
Wait at least for 7 sec. after t u rning
on the power.
NO
YES
Check the power s u pply voltage.
Correct the power s u pply.
YES
NO
Replace the o u tdoor fan motor
and the o u tdoor u nit PCB
(main PCB).
Rotate the
o u tdoor fan by hand.
Does the o u tdoor fan rotate
smoothly?
Is the voltage
fl u ct u ation within ±10%
from the rated val u e?