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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 Wall Mounted Type FTXS30HVJU

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Maintenance Plans for Daikin Indoor Unit Wall Mounted Type Model FTXS30HVJU

Integrate maintenance plans directly into your work orders in MaintainX.

Capacitor Voltage Check

Warning: Check the main circuit for short circuit before this check.

Main circuit checked for short circuit?

Warning: Be careful never to touch any live parts.

Voltage reading according to the model's drawing

Sign off on the voltage check

Run this procedure

Thermistor Resistance Check

Warning: Disconnect the connectors of the thermistors from the PCB before proceeding

Thermistors disconnected from the PCB?

Measure the resistance of each thermistor

Select the model of the thermistor

For the models in which the thermistor is directly mounted on the PCB, disconnect the connector for the PCB and measure.

Thermistor disconnected from the PCB for direct mounted models?

Measure the resistance of the directly mounted thermistor

Sign off on the thermistor resistance check

Run this procedure

Fan Motor Connector Output Check

Check the connection of connector

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

Check the motor control voltage (pins 4 - 3)

Check the rotation command voltage (pins 4 - 2)

Check the rotation pulse (pins 4 - 1)

Sign off on the fan motor connector output check

Run this procedure

Power Module Check

Check No.22

Note: Check to make sure that the voltage between (+) and (–) of the diode bridge (DB1) is approx. 0 V before checking.

Voltage between (+) and (–) of the diode bridge (DB1) is approx. 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 from the outdoor unit PCB

Follow the procedure below to measure resistance between the terminals of the DB1 and the terminals of the compressor with a multi-tester. Evaluate the measurement results for a judgment.

Enter the resistance between the terminals of the DB1 and the terminals of the compressor

Resistance measurement within acceptable range

Sign off on the power module check

Run this procedure

Electronic Expansion Valve Check

EV connector correctly connected to the PCB

Does the EV generate latching sound when power is turned off and on again?

Continuity confirmed when connector is disconnected and checked with a tester

Check the continuity between the pins

If there is no continuity between the pins, the EV coil is faulty

If the continuity is confirmed, the outdoor unit PCB is faulty

Note: Please note that the latching sound varies depending on the valve type