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Documents & Manuals

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Tensioning Guide
Belt-diagram
C-120 pulleys
+ 13 more

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
+ 5 more

Parts

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Drive Motor
B2 Rollers
Tensioning System
+ 40 more

Daikin Indoor Unit Multi-Split Type Air Conditioner CDXS24LVJU

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Maintenance Plans for Daikin Indoor Unit Multi-Split Type Air Conditioner Model CDXS24LVJU

Integrate maintenance plans directly into your work orders in MaintainX.

Capacitor Voltage Check

Warning: This procedure requires trained personnel with PPE!

Main circuit checked for short circuit?

Warning: Never touch any live parts during the procedure.

Voltage between FU2 and DC–

Is the voltage 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 Module Check

Warning: Ensure that the voltage between (+) and (–) of the power module is about 0 V before proceeding.

Voltage between (+) and (–) of the power module is about 0 V?

Disconnect the compressor harness connector from the outdoor unit PCB. To disengage the connector, press the protrusion on the connector.

Compressor harness connector disconnected?

Measure resistance between the (+) or (–) terminal of the power module and the U, V or W terminal of the compressor with a multimeter.

Enter the resistance measurement

Evaluate the measurement results

Sign off on the power module check

Run this procedure

Hall IC Check

CDXS, FDXS Series

1. Check the connector connection.

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

(1) Output voltage of about 5 V between pins 1 and 3.

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

If NG in step (1) -> Defective PCB -> Replace the PCB (control PCB).

If NG in step (2) -> Defective Hall IC -> Replace the indoor fan motor.

If OK in both steps (1) and (2) -> Replace the PCB (control PCB).;

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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

Indoor Fan Motor Connector Check

CTXG, FTXR, CTXS, FTXS, FVXS Series

1. Check the connection of connector.

2. Check motor power supply voltage output (pins 4 - 7).

3. Check motor control voltage (pins 4 - 3).

4. Check rotation command voltage output (pins 4 - 2).

5. Check rotation pulse input (pins 4 - 1).

FDMQ Series

1. Turn the power supply OFF.

2. With the fan motor connector disconnected, measure the resistance between each pin, then make sure that the resistance is more than the value mentioned in the following table.

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