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Loading...What to do if Liebert CRV Air Conditioner has high pressure protection?
If the Liebert Air Conditioner experiences high pressure protection, it could be due to a clogged condenser. Clean the condenser. If it is an air-cooled system, check the condensing fan. Also, too much refrigerant may have been charged. Check whether the subcooling degree is too high.
What to do if contactor does not close and Liebert CRV compressor does not start?
If the contactor does not close and the Liebert Air Conditioner compressor does not start, check the state of the micro-processing controller. Inspect the high pressure MCB for high pressure alarm. Check for discharging low/high temperature alarms. View the history alarm for a low pressure alarm. Check the contactor and the compressor driver. Check if the compressor coil is open circuit. If so, wait till the coil is cooled and it will be restored automatically.
What to do if Liebert CRV contactor closes, but heating is ineffective?
If the contactor closes but the heating is ineffective in your Liebert Air Conditioner, first check that the heating MCB is closed and that the power voltage of contactor L1, L2, L3 is normal. If the issue persists, cut off the power supply and measure the resistance of the heater with an ohmmeter to determine if the electric heater is damaged.
General| Refrigerant | R410A |
|---|---|
| Frequency | 50/60 Hz |
| Operating Ambient Temperature | 64° to 113°F (18° to 45°C) |
| Sound Pressure Level | Varies by model (typically 45 dB(A) to 65 dB(A)) |
| Dimensions | Varies by model (consult specific model documentation) |
| Weight | Varies by model (consult specific model documentation) |
Details the model naming convention and configuration codes for the Liebert CRV+ series.
Specifies the type of refrigerant required and warnings about using low-quality refrigerants.
Overview of the Liebert CRV+ series air conditioner, its applications, and key features.
Illustrates the physical appearance of the Liebert CRV+ series air conditioner units.
Describes the primary components within the indoor unit of the air conditioner.
Outlines the necessary conditions for operation and storage environments.
Guidelines for safely moving, unpacking, and inspecting the air conditioner unit.
Important considerations and recommendations for correct mechanical installation.
Details the overall system layout and piping diagrams for the air conditioner.
Covers requirements for the equipment room and installation space for the indoor unit.
Instructions for connecting air-cooled unit pipes, including recommended sizes and pipe extension kits.
Procedures for removing shipping restraints and vibration absorbers before operation.
Checklist for verifying mechanical installation completion before electrical installation.
Lists wires to be connected and important installation notes for electrical setup.
Details on connecting power and control cables to the indoor unit's electrical components.
Final inspection checklist for electrical installation before commissioning.
Identifies the locations of Miniature Circuit Breakers (MCBs) within the unit's electrical control box.
Procedures and preparation steps for safely powering on and commissioning the air-cooled unit.
Highlights the key features and capabilities of the micro-processing controller.
Shows the physical appearance of the micro-processing controller unit.
Describes the display layout and information shown on the LCD screen.
Explains the functions of the five control buttons on the micro-processing controller.
Details the different screens (ON, Normal, Password) displayed by the controller.
Outlines the hierarchical structure of the menus and submenus available on the controller.
Describes functions for self-diagnosing unit components and checking functionality.
Information on checking, cleaning, and replacing the dust filter for optimal performance.
Guidance on inspecting the fan kit, motor status, and impeller for proper operation.
Details on the electrode humidifier's components, operation, and maintenance.
Maintenance recommendations for the optional electrical heater, including inspection and replacement.
Instructions for periodic inspection of the drain system to ensure proper water flow.
Maintenance checks for the refrigerating system, including pressure monitoring and component inspection.
Troubleshooting steps and handling methods for fan failures.
Troubleshooting steps for issues with the heating system.
Troubleshooting for compressor and cooling system faults.
