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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 FTXR18TVJUS

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Maintenance Plans for Daikin Indoor Unit Multi-Split Type Air Conditioner Model FTXR18TVJUS

Integrate maintenance plans directly into your work orders in MaintainX.

Rotation Pulse Check

Outdoor fan motor

Voltage between the pins 4 - 7

Control voltage between the pins 4 - 3

Rotation command voltage between the pins 4 - 2

Pulses at the pins 4 - 1 when the outdoor fan motor is rotated 1 turn by hand

Fuse melted?

Outdoor fan motor functioning properly?

Defective PCB?

Defective Hall IC?

Run this procedure

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

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.

Run this procedure

Power Module Check

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

Enter the voltage between (+) and (-) of the power module

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

Was the compressor harness connector successfully 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