To Next PageTo Next PageWhy is my Airwell AQL20-75 Heat Pump making excessive noise?
Excessive noise in your Airwell Heat Pump can stem from several sources. Check the clamping brackets of the lines for vibration. If the thermostatic expansion valve emits a whistler, refill. Inspect the dehydrating filter and ensure the compressor’s locknuts are tightened. If the compressor is noisy with seized bearings, it will need to be replaced.
What to do if the HP alarm activates and stops my Airwell AQL20-75 Heat Pump?
If the HP alarm activates and stops your Airwell Heat Pump, it could be due to several reasons. Check the operation of the pressure switch and replace it if defective. Ensure the delivery valve is fully open; replace it if it’s faulty. If there are substances with condensable gases in the circuit, drain the circuit. Also, verify that the condenser fan is functioning correctly by checking its cables and motor; repair or replace if defective.
Why is my Airwell AQL20-75 Heat Pump running but not cooling?
If your Airwell Heat Pump is running but not cooling, it could be due to an insufficient charge of refrigerant, in which case, you should refill it. Alternatively, the dehydrating filter might be clogged and needs replacement.
What causes a low oil level in the Airwell Heat Pump compressor?
A low oil level in your Airwell Heat Pump's compressor can be caused by one or more gas or oil leaks in the circuit; identify and remove these leaks. It can also be due to a mechanical failure of the compressor, or an anomaly of the oil heater of the compressor’s base. If the latter, check the electric circuit and the resistor of the heater of the motor base, and replace defective components.
What causes the LP alarm to activate and stop the Airwell AQL20-75 Heat Pump?
The activation of the LP alarm, which stops the Airwell Heat Pump, can be due to a gas leak (identify and remove the leak) or an insufficient charge of refrigerant (refill).
How to fix ice on the suction line of my Airwell AQL20-75?
Ice forming on the suction line of your Airwell Heat Pump can be due to wrong calibration of overheating (increase overheating) or due to charge (check the charge).
What causes frosting of the liquid line in my Airwell AQL20-75?
Frosting on the liquid line of your Airwell Heat Pump can occur if the valve of the liquid line is partially closed; check that the valves are open. Another cause could be a clogged liquid filter; replace the cartridge or the filter.
Why is the liquid line of my Airwell AQL20-75 too hot?
If the liquid line of your Airwell Heat Pump is too hot, it's likely due to an insufficient charge. Identify and remove the cause of the loss of charge and refill.
Provides an overview of the unit's purpose and manual, including symbols and conventions.
Outlines warranty conditions, validity requirements, and responsibilities.
Explains how to safely stop and restart the unit using control panel functions.
Describes the symbols and conventions used throughout the manual for clarity.
Introduces safety regulations and defines key terms like Owner, Installer, and Operator.
Lists general safety guidelines for operating and approaching the unit.
Details precautions for control, mechanical, and electrical residual risks.
Outlines essential safety measures for performing maintenance operations.
Identifies various safety labels and their meanings on the unit.
Covers safety data and regulations for refrigerants and lubricants.
Instructions for inspecting the unit upon receipt for damage and completeness.
Guidelines for safely lifting and moving the unit using appropriate equipment.
Explains when and how to secure the unit to its installation site.
Provides precautions for storing the unit before installation to prevent damage.
Details requirements for selecting an appropriate installation location for the unit.
Describes the necessary components and considerations for the external water circuit.
Instructions for connecting the water lines to the unit's inlet and outlet.
Specifies drainage requirements for heat pump units during defrost cycles.
Details the water buffer tank, its features, components, and installation.
Details the requirements for connecting the unit to the electrical power supply.
Explains how to perform electrical connections according to diagrams and standards.
Lists essential checks to perform before the unit's initial start-up.
Provides the procedure for safely starting the unit for the first time.
Outlines checks to ensure proper operation after start-up.
Instructions for training the end-user on unit operation.
Describes the electronic control unit, keyboard, and display interface.
Explains the function and settings of the DIP switches for unit configuration.
Details alarm codes, descriptions, and how to view logged alarms.
Lists sensor codes and their meanings for reading operational data.
Explains how to configure special inverter fans for specific static pressure.
Introduces the microprocessor control system for AQC units with 2 compressors.
Describes the LCD display and its information presentation.
Explains the function of the keyboard keys for navigating and setting parameters.
Lists alarm codes, their descriptions, and operational status.
Provides a general description of the AQL/AQH units, their purpose, and construction.
Details optional accessories available for AQL/AQH 20-35 models.
Details optional accessories available for AQL/AQH 40-75 models.
Illustrates the refrigerant flow within the various AQL/AQH/AQC unit configurations.
Presents hydraulic performance curves for water flow and pressure drop.
Lists physical specifications for different unit models including dimensions and weight.
Provides detailed electrical specifications for various unit configurations.
Shows shock absorber positions and weight distribution for installation.
Presents detailed dimensional drawings for different unit series.
Specifies the required clearances for unit installation and ventilation.
Outlines general requirements for unit maintenance and service.
Details the planned maintenance schedule and required checks.
Explains the procedure for charging the refrigerant circuit safely and correctly.
Provides information regarding compressor maintenance and oil requirements.
Describes how to clean the condenser coils and potential issues.
Information on the condenser fans and their maintenance.
Explains the function and maintenance of the dehydrating filter.
Describes how to use the sight glass to check refrigerant and humidity.
Details the procedure for checking and adjusting the thermostatic expansion valve.
Instructions for checking and cleaning the evaporator heat exchanger.
Lists recommended spare parts for the unit's first two years of operation.
Specifies the type of oil used for compressor lubrication.
Indicates where wiring diagrams are located and how to request them.
Provides general guidelines for safely dismantling and disposing of the unit.
General