The Daikin Outdoor Heat Pump RXN12KEVJU is a high-efficiency HVAC solution designed for residential and commercial applications. This model provides reliable heating and cooling performance, ensuring optimal indoor comfort while minimizing energy consumption. Ideal for various climates, it features advanced technology for enhanced durability and efficiency.

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Manual for Daikin Outdoor Heat Pump RXN12KEVJU

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Documents & Manuals

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

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

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Motion Industries
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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 RXN12KEVJU

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Maintenance Plans for Daikin Outdoor Heat Pump Model RXN12KEVJU

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Air Filter Removal

Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work.

1. Appearance features

Warning

Dangerous: High voltage

A high voltage is applied to all the electric circuits of this product including thermistors.

When a signal from the remote controller is received, the receiving tone sounds and the operation lamp flickers immediately to confirm the signal reception.

When the ON/OFF button is kept pressed for 5 seconds, the forced cooling operation is performed for about 15 minutes.

2. Remove the air filters.

1 Open the front panel to the position where it stops.

Run this procedure

Power Module Check

Warning: Ensure that the voltage between (+) and (–) of the diode bridge (DB1) is approx. 0 V before proceeding

Compressor harness connector disconnected from the outdoor unit PCB

Measure resistance between the terminals of the DB1

Measure resistance between the terminals of the compressor

Evaluate the measurement results for a judgment

Sign off on the power module check

Run this procedure

Main Circuit Short Check

Warning: Ensure the voltage between (+) and (–) of the diode bridge (DB1) is approx. 0 V before checking.

Enter the voltage between (+) and (–) of the diode bridge (DB1)

Enter the resistance between the pins of the DB1

Is the resistance 'infinity' or less than 1 kW?

Sign off on the main circuit short check

Run this procedure

Horizontal Blade Removal

Warning: Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work.

Open the horizontal blade.

Unfasten the center shaft while bending the horizontal blade slightly.

Cautions for reassembling: Since the key pattern hook is provided, rotate the horizontal blade and fit it to the right shaft first.

Fit the horizontal blade to the center and left shafts.

Unfasten the left shaft of the horizontal blade.

Unfasten the right shaft of the horizontal blade.

Remove the horizontal blade.

Sign off on the blade removal process

Run this procedure

Rotation Pulse Check on the Outdoor Unit PCB

9/12 class

1. Check that the voltage between the pins 10 - 11 is 15 VDC.

2. Check if the Hall IC generates the rotation pulse (0 ~ 15 VDC) 4 times between the pins 10 -12, 10 - 13, when the fan motor is manually rotated once.

15/18/24 class

Make sure that the voltage of 320 ± 30 V is applied.

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

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

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

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

Run this procedure