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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
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Parts

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Drive Motor
B2 Rollers
Tensioning System
+ 40 more

Daikin VRV X Series High-COP Type Air Conditioner RXQ38AHR

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Maintenance Plans for Daikin VRV X Series High-COP Type Air Conditioner Model RXQ38AHR

Integrate maintenance plans directly into your work orders in MaintainX.

Refrigerant Shortage Check

Warning: This check requires trained personnel with PPE!

CHECK 7: VRV systems refrigerant shortage diagnosis

Measure the superheating degree of suction gas

Is the compressor discharge gas temperature higher?

Does the electronic expansion valve turn open?

Does the low pressure drop causing the unit not to demonstrate cooling capacity?

Sign off on the refrigerant shortage check

Run this procedure

Air Conditioner Test Operation Check

Test Operation

Is the temperature setting of the remote controller at the lowest level in cooling mode or in test mode?

Checklist

Is the operation lamp lit?

Is the timer lamp off?

Is the fan operating?

Is the air from indoor unit cool?

Is the air from outdoor unit warm?

Is the air flow from the indoor unit stopped occasionally during operation?

Run this procedure

Air Conditioner Test

Warning: This test operation requires trained personnel with PPE!

INFORMATION: It may take 10 minutes to achieve a uniform refrigerant state before the compressor starts.

During the test operation, the refrigerant running sound or the magnetic sound of a solenoid valve may become loud and the display indication may change. These are not malfunctions.

All front panels are closed

All field settings are set

Power to the outdoor unit and the connected indoor units is ON

NOTICE: Be sure to turn on the power 6 hours before operation in order to protect the compressor

Default (idle) situation is existing

Push BS2 for 5 seconds or more. The unit will start test operation.

Run this procedure

Relay Broken Wire Check

Procedure for checking outdoor-outdoor unit transmission wiring for broken wires

Turn OFF the power supply to all equipment

Short circuit between the outdoor-outdoor unit terminal F1 and F2 in the 'Outdoor Unit A'

Conduct continuity checks between the transmission wiring terminal blocks F1 and F2 of the central remote controller using a multimeter

Check if there is continuity between the said terminal blocks

If there is no continuity, conduct continuity checks between the transmission wiring terminal blocks F1 and F2 of the unified ON/OFF controller

If there is no continuity, conduct continuity checks between the outdoor-outdoor unit terminal of the 'Outdoor Unit E', 'Outdoor Unit D', 'Outdoor Unit C'

Procedure for checking indoor-outdoor unit transmission wiring for broken wires

Turn OFF the power supply to all equipment

Run this procedure

Refrigerant Overcharge Check

Warning: This check requires trained personnel with PPE!

Enter the high pressure reading

Is overload control conducted causing insufficient cooling capacity?

Enter the superheating degree of suction gas

Is the compressor lower in discharge pipe temperature despite of pressure loads?

Enter the subcooling degree of condensate

Is the subcooling degree of condensate high?

Sign off on the refrigerant overcharge check