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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 Outdoor Heat Pump RXL24UMVJU

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Maintenance Plans for Daikin Outdoor Heat Pump Model RXL24UMVJU

Integrate maintenance plans directly into your work orders in MaintainX.

Indoor Fan Motor Connector Check

FTX09/12/15NMVJU(A) Fan motor wire breakdown/short circuit check

Check the connector for connection

Turn the power off

Check if each resistance at the phases U - V and V - W is within specified range

Motor control voltage check

Check the connector for connection

Check the motor control voltage is generated (between the pins 2 - 3)

Rotation pulse check

Check the connector for connection

Run this procedure

Thermistor Resistance Check

Warning: Disconnect the thermistor ASSY from the PCB before measuring

Enter the resistance value of the thermistor

Does the measured resistance match the listed value?

If the resistance does not match, replace the thermistor

Sign off on the thermistor resistance check

Run this procedure

Electronic Expansion Valve Check

EV connector correctly connected to the PCB

EV generates a latching sound when power is turned off and on again

Continuity present when connector is disconnected and checked with a multimeter

Check the continuity between the pins

EV coil is not faulty

Outdoor unit PCB (main PCB) is not faulty

Sign off on the electronic expansion valve check

Run this procedure

Rotation Pulse Check

Warning: Ensure the operation is off and power is off before starting the procedure

Voltage between pins 4 - 7 is 320 VDC

Control voltage between pins 4 - 3 is 15 VDC

Rotation command voltage between pins 4 - 2 is 0 ~ 6.5 VDC

Keep operation off and power off. Connect the connector S70 or S71

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

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

If NG in step 2 -> Defective PCB -> Replace the outdoor unit PCB (main PCB)

If NG in step 4 -> Defective Hall IC -> Replace the outdoor fan motor

Run this procedure

Inverter Analyzer Check

 Characteristics

Inverter analyzer: RSUK0917C

If an abnormal stop occurs due to compressor startup failure or overcurrent output when using an inverter unit, it is difficult to judge whether the stop is caused by the compressor failure or some other failure (main PCB, power module, etc.). The inverter analyzer makes it possible to judge the cause of trouble easily and securely. Connect an inverter analyzer as a quasi-compressor instead of compressor and check the output of the inverter.

 Operation Method

Step 1: Be sure to turn the power off.

Step 2: Install an inverter analyzer instead of a compressor.

Note: Make sure the charged voltage of the built-in smoothing electrolytic capacitor drops to 10 VDC or below before carrying out the service work.

(1) Remove the terminals from the compressor.

(2) Connect the terminals to the terminals of the inverter analyzer.

Run this procedure