The Daikin Indoor Cooling/Heating Unit FXAQ24PVJU is a versatile HVAC solution designed for efficient climate control in residential and commercial spaces. This unit offers reliable heating and cooling performance, ensuring optimal comfort throughout the year. With advanced features and energy-efficient operation, it is an ideal choice for modern indoor environments.

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Manual for Daikin Indoor Cooling/Heating Unit FXAQ24PVJU

MAINTENANCE RESOURCES

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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
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Daikin Indoor Cooling/Heating Unit FXAQ24PVJU

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Maintenance Plans for Daikin Indoor Cooling/Heating Unit Model FXAQ24PVJU

Integrate maintenance plans directly into your work orders in MaintainX.

Refrigerant Check

Refrigerant Overcharge Check

High pressure reading

Overload control conducted?

Superheated degree of suction gas

Discharge pipe temperature

Subcooled degree of condensate

Temperature of discharge air through the subcooled section is lower?

Refrigerant Shortage Check

Superheated degree of suction gas

Run this procedure

Heat Recovery System Vacuuming/Dehydration Maintenance

Choose the type of vacuuming and dehydration

Normal vacuuming and dehydration

Enter the vacuum pump reading after 2 hours

Did the vacuum reach –100.7 kPa (–14.6 psi) or less after 2 hours?

Enter the vacuum pump reading after additional 1 hour if needed

Did the vacuum reach –100.7 kPa (–14.6 psi) or less after 3 hours?

Did the vacuum gauge reading rise after leaving the compressor in vacuum state for 1 hour?

Special vacuuming and dehydration

Enter the vacuum pump reading after pressurizing with nitrogen gas up to 0.05 MPa (7.3 psi)

Run this procedure

Heat Recovery System Maintenance

Check for High Pressure in cooling

Check for High Pressure in heating

Check Thermistor

Check Pressure Sensor

Check for broken wire of the relay wire

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

Run this procedure

Superheat Operation Check

Superheating temperature control in cooling is conducted by indoor unit electronic expansion valve

Is the indoor unit electronic expansion valve functioning properly?

Superheating temperature control in heating is conducted by outdoor unit electronic expansion valve (main)

Is the outdoor unit electronic expansion valve functioning properly?

Judgement criteria of superheat operation: Suction gas superheated degree: 10°C (50°F) and over. Discharge gas superheated degree: 45°C (113°F) and over, except immediately after compressor starts up or is running under drooping control

Enter the suction gas superheated degree

Enter the discharge gas superheated degree

Does the superheat operation meet the judgement criteria?

Sign off on the superheat operation check

Run this procedure

Pressure Check

Warning: This procedure requires trained personnel with PPE!

Compressor PI control in cooling

Low pressure protection control

Hot gas bypass control

Superheated degree control in cooling

Superheated degree control in heating