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Documents & Manuals

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Tensioning Guide
Belt-diagram
C-120 pulleys
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Work Order Templates

Pre-built workflows to keep your asset running smoothly.

Daily Electrical System Inspection
Replace Roller and Pulley
Install Engine B-120
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Procedures

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Motion Industries
Applied Industrial Technologies
Electrical Brothers
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Parts

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Drive Motor
B2 Rollers
Tensioning System
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Daikin Indoor Unit Multi-Split Type Air Conditioner FTXR09TVJUW

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Maintenance Plans for Daikin Indoor Unit Multi-Split Type Air Conditioner Model FTXR09TVJUW

Integrate maintenance plans directly into your work orders in MaintainX.

Hall IC Check

CDXS, FDXS Series

Check the connector connection

With the power on, operation off, and the connector connected, check the following

Output voltage of about 5 V between pins 1 and 3

Generation of 3 pulses between pins 2 and 3 when the indoor fan motor is operating

If NG in step (1)

If NG in step (2)

If OK in both steps (1) and (2)

Sign off on the Hall IC Check

Run this procedure

Capacitor Voltage Check

Warning: Check the main circuit for short circuit before proceeding

Circuit breaker is still on

Warning: Never touch any live parts

Voltage between FU2 and DC–

Voltage is 50 V or less

Ensure firm contact between the multimeter probes and the test points

Sign off on the capacitor voltage check

Run this procedure

Power Supply Waveform Check

Warning: This check requires trained personnel with PPE!

Enter the power supply waveform measurement between No. 1 and No. 2 on the terminal board

Is the power supply waveform a sine wave as shown in Fig.1?

Is there any waveform disturbance near the zero-cross as shown in the sections circled in Fig.2?

Upload a photo of the measured waveform

Sign off on the power supply waveform check

Run this procedure

Rotation Pulse Check

Outdoor fan motor

Make sure that the voltage of 320 V is applied.

Set operation off and power off. Disconnect the connector S70.

Check that the voltage between the pins 4 - 7 is 320 VDC.

Check that the control voltage between the pins 4 - 3 is 15 VDC.

Check that the rotation command voltage between the pins 4 - 2 is 0 ~ 15 VDC.

Keep operation off and power off. Connect the connector S70.

Check whether 4 pulses (0 ~ 15 VDC) are input at the pins 4 - 1 when the outdoor fan motor is rotated 1 turn by hand.

When the fuse is melted, check the outdoor fan motor for proper function.

Run this procedure

Electronic Expansion Valve Check

Conduct the following to check the electronic expansion valve (EV).

1. Check if the EV connector is correctly inserted in the PCB. Match the EV unit number and the connector number.

2. Turn the power off and on again, and check if all the EVs generate a latching sound.

3. If any of the EVs does not generate a latching sound in the above step 2, disconnect that connector and check the continuity using a multimeter.

Check the continuity between the pins 5 - 1, 5 - 2, 5 - 3, 5 - 4. If there is no continuity between the pins, the EV coil is faulty.

4. If no EV generates a latching sound in the above step 2, the outdoor unit PCB is faulty.

5. If the continuity is confirmed in the above step 3, mount a good coil (which generated a latching sound) in the EV unit that did not generate a latching sound, and check if that EV generates a latching sound.

∗If a latching sound is generated, the outdoor unit PCB is faulty.

∗If a latching sound is not generated, the EV unit is faulty.

Run this procedure