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Gree LSQWRF35VM/NaA-M - User Manual

Gree LSQWRF35VM/NaA-M
139 pages
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A Series Modular-type Air-cooled (Heat Pump) Chiller

Table of Contents

Other manuals for Gree LSQWRF35VM/NaA-M

Preview: Installation, Start-Up And Maintenance Manual
Installation, Start-Up And Maintenance Manual39 pages

Questions and Answers

  • D
    douglas47Aug 16, 2025
    What to do if Gree Heat Pump compressor fails to start?
    • P
      parksautumnAug 16, 2025
      If the Gree Heat Pump compressor fails to start, check the power supply and wiring of the control system. Also, examine the overcurrent relay and fuse, replacing them if necessary. Ensure the water system is functioning correctly and there are no low/high pressure protections activated. If a wireless controller is in use, verify its settings and alarm signals. Finally, check if the sensed temperature exceeded the rated, and reset it.
  • D
    Derek CareyAug 19, 2025
    Why does my Gree Heat Pump shut down due to high pressure?
    • R
      Ricardo PottsAug 19, 2025
      If your Gree Heat Pump shuts down due to high pressure protection of the compressor, it might be caused by uncomplete vacuuming, high environment temperature, dirty condenser fins, inadequate condensing airflow, a failed high-pressure cutoff, or overcharged refrigerant. To resolve this, revacuum the system and recharge refrigerant, improve ventilation, clean condenser fins, repair the condenser fan, check the high-pressure switch, and check/discharge some refrigerant.
  • M
    Michael RobinsonAug 22, 2025
    What to do if Gree Heat Pump shuts down due to compressor motor overload?
    • J
      Joseph MaynardAug 22, 2025
      If your Gree Heat Pump shuts down due to overloading of the compressor motor, it could be due to voltage issues (too high or too low), high or low discharge pressure, high return water temperature, a faulty overloaded element, high environment temperature, phase loss for the compressor, or a short-circuited compressor motor. Address this by checking the voltage (ensuring it's no less than 80% with a phase difference not exceeding ±30%), checking discharge pressure, checking return water temperature, checking the compressor current, improving ventilation, and checking the three-phase resistances.
  • M
    melissapriceAug 25, 2025
    Why does my Gree Heat Pump shut down with low pressure protection?
    • M
      Michael CurryAug 26, 2025
      If your Gree Heat Pump shuts down due to low pressure protection, the cause may be a faulty electrostatic expansion valve or low-pressure cutoff, insufficient refrigerant, entering chilled water temperature being too low, or chilled water flow being too low. Solutions include replacing the coils or valve body, checking the low-pressure cutoff, checking and charging refrigerant, checking the chilled water temperature, and adjusting the chilled water flow.
  • M
    Mrs. Erin Yu DDSAug 28, 2025
    What causes flow switch protection in Gree Heat Pump?
    • M
      michael55Aug 28, 2025
      If your Gree Heat Pump shows a flow switch protection error, it could be due to the water pump not starting, low water flow, a damaged water flow switch, or air inside the water system. To fix this, start the water pump, adjust the water flow, and dispel any air inside the water system.
  • R
    Richard CoxAug 31, 2025
    How to fix temperature sensor protection on Gree Heat Pump?
    • C
      Christine GrayAug 31, 2025
      If your Gree Heat Pump displays a temperature sensor protection error, it may be due to incorrectly connected bulb plugs, a damaged temperature bulb, or a damaged main board. Check if the bulb plug is connected to the correct main board plug and replace the bulb or main board as needed.
  • L
    Lisa DavenportSep 3, 2025
    What does pressure transducer error mean on Gree Heat Pump?
    • M
      Makayla DunnSep 3, 2025
      If your Gree Heat Pump shows an error related to the pressure transducer, it could be due to an open-circuited or short-circuited pressure sensor, or a damaged pressure sensor. To resolve this, check the circuit of the pressure sensor and replace it if necessary.
  • A
    Austin WashingtonSep 6, 2025
    Why is my Gree Heat Pump showing protection against a failed 4-way valve?
    • D
      Dr. Shelly StricklandSep 6, 2025
      If your Gree Heat Pump is showing protection against the failed 4-way valve, it might be caused by the entering and leaving water temperature sensors falling off or being installed incorrectly, or the 4-way valve itself being damaged. Ensure the water temperature sensors are correctly installed with proper heat conduction, and replace the 4-way valve if necessary.
  • M
    Margaret BallardSep 9, 2025
    What causes protection against failed compressor IPM module in Gree Heat Pump?
    • M
      Margaret CarneySep 9, 2025
      If your Gree Heat Pump is showing protection against a failed compressor IPM module, it could be due to a sudden voltage drop or a damaged compressor drive board. Check if a voltage drop occurred before the protection and replace the compressor drive board if necessary.
  • L
    Lindsay JohnsonSep 12, 2025
    What to do if Gree Heat Pump discharge temperature sensor failed?
    • M
      Melissa CardenasSep 12, 2025
      If your Gree Heat Pump shows a failed discharge temperature sensor, it may be due to low water temperature or the discharge temperature sensor falling off. Decrease the load to improve the water temperature and check if the discharge temperature sensor is installed correctly.

Summary

Product Information

3.1 Introduction and Features

Covers unit lineup, model details, key features, and operating conditions.

3.2 Performance Data and Curves

Details operation range, performance curves, and technical parameters.

3.6 Selection Statement

Outlines procedures and guidelines for selecting the appropriate chiller unit.

Unit Control

4.1 Schematic Diagram

Illustrates the main control system components and connections.

4.2 Operation Flowcharts

Visualizes the sequence of operations for cooling and heating modes.

4.3 Key Control Logics

Explains the logic behind critical control functions like protection and mode management.

4.5 Operation Instructions

Details how to operate the unit through the control panel functions.

Unit Installation

5.2 Preparations before Installation

Covers safety, site requirements, tools, materials, and pipe/valve installation.

5.4 Installation Instructions

Provides guidance on dimensions, placement, foundation, handling, and environment.

5.5 Piping and Insulation

Details water piping, insulation, valves, filters, and pressure testing.

Commissioning

6.1 Flowchart and Safety

Covers commissioning flowchart and safety precautions.

6.3 Preparation and Checks

Details preparation, documents, tools, and pre-commissioning checks.

6.4 Initial Run Procedures

Describes steps for initial unit startup, communication, and operation checks.

Repair

7.1 Error List and Troubleshooting

Lists errors, protection logic, and provides troubleshooting flowcharts for various issues.

7.4 Component Replacement

Provides detailed instructions for replacing main parts like compressor and expansion valve.

7.5 Routine Repair

Covers common repair tasks such as fixing refrigerant leaks and air removal.

Maintenance

8.1 Maintenance Importance

Emphasizes the importance of routine and periodic maintenance.

8.2 Maintenance Items and Cleaning

Lists maintenance items, water quality requirements, and cleaning procedures.

8.3 Freeze Protection

Provides instructions on protecting the unit from freezing and draining water.

Gree LSQWRF35VM/NaA-M Specifications

General IconGeneral
BrandGree
ModelLSQWRF35VM/NaA-M
CategoryChiller
LanguageEnglish

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