Indoor Fan Motor Connector Check; Power Supply Waveform Check - Daikin FTXM-V Series Service Manual

SiUS042113E
5.2

Indoor Fan Motor Connector Check

Check No.03
 Fan motor wire breakdown/short circuit check
1. Check the connector for connection.
2. Turn the power off.
3. Check if each resistance at the phases U - V and V - W is within specified range in the table
09/12 class
18/24 class
5.3

Power Supply Waveform Check

Check No.11
Measure the power supply waveform between No. 1 and No. 2 on the terminal strip, and check the
waveform disturbance.
 Check if the power supply waveform is a sine wave (Fig.1).
 Check if there is waveform disturbance near the zero-cross (sections circled in Fig.2).
[Fig.1]
Part 6 Service Diagnosis
below.
U-V/V-W Resistance
41 ~ 57
20 ~ 28
S200
3 Phase W
2
Phase V
1
Phase U
()
[Fig.2]
(R1736)
Check
R6000511
(R1444)
135