Gree LSQWRF65VM/NaA-M - User Manual

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A Series Modular-type Air-cooled (Heat Pump) Chiller

Table of Contents

Other manuals for Gree LSQWRF65VM/NaA-M

Installation, Start-Up And Maintenance Manual39 pages

Questions and Answers

G
Gerald ScottAug 15, 2025
What to do if Gree Heat Pump compressor fails to start?
- D
  davishenryAug 15, 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.
Y
yhortonAug 18, 2025
Why does my Gree Heat Pump shut down due to high pressure?
- K
  Kelly GreenAug 18, 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.
B
Brenda FriedmanAug 21, 2025
What to do if Gree Heat Pump shuts down due to compressor motor overload?
- Y
  yfieldsAug 21, 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.
N
nelsonjamesAug 25, 2025
Why does my Gree Heat Pump shut down with low pressure protection?
- J
  James RoseAug 25, 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.
A
Andrea Long DVMAug 27, 2025
What causes flow switch protection in Gree Heat Pump?
- N
  nuneztimothyAug 27, 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.
C
Corey JonesAug 30, 2025
How to fix temperature sensor protection on Gree Heat Pump?
- L
  Linda MartinezAug 30, 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.
M
Megan BoyerSep 2, 2025
What does pressure transducer error mean on Gree Heat Pump?
- A
  Austin NunezSep 2, 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.
T
Terrence HartSep 5, 2025
Why is my Gree Heat Pump showing protection against a failed 4-way valve?
- R
  Rhonda MillerSep 5, 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.
J
Jamie ThomasSep 8, 2025
What causes protection against failed compressor IPM module in Gree Heat Pump?
- K
  Karen TaylorSep 8, 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
lellisonSep 12, 2025
What to do if Gree Heat Pump discharge temperature sensor failed?
- B
  Brandy JohnsonSep 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

Safety Notice

Product Information

Technical Parameters List

Detailed electrical and performance parameters for the unit models.

Selection Statement and Procedures

Procedures and guidelines for selecting the appropriate unit model.

Unit Control

Key Control Logics

Explanation of critical control logic for cooling, heating, and protection.

Unit Installation

Preparations before Installation

Installation Instructions

Piping and Insulation

Detailed instructions for water system piping, insulation, and related components.

Commissioning

Safety Precautions for Commissioning

Essential safety measures to be followed during commissioning.

Initial Run Procedures

Repair and Routine Maintenance

Error List

Comprehensive list of error names, sources, and protection logic.

Flow Chart of Troubleshooting

Diagnostic flowcharts for common protection issues like high pressure, low pressure.

Replacement of Main Parts

Routine Repair Procedures

Procedures for routine maintenance tasks like refrigerant leakage and air removal.

Summary

Safety Notice

Product Information

Technical Parameters List

Detailed electrical and performance parameters for the unit models.

Selection Statement and Procedures

Procedures and guidelines for selecting the appropriate unit model.

Unit Control

Key Control Logics

Explanation of critical control logic for cooling, heating, and protection.

Unit Installation

Preparations before Installation

Installation Instructions

Piping and Insulation

Detailed instructions for water system piping, insulation, and related components.

Commissioning

Safety Precautions for Commissioning

Essential safety measures to be followed during commissioning.

Initial Run Procedures

Repair and Routine Maintenance

Error List

Comprehensive list of error names, sources, and protection logic.

Flow Chart of Troubleshooting

Diagnostic flowcharts for common protection issues like high pressure, low pressure.

Replacement of Main Parts

Routine Repair Procedures

Procedures for routine maintenance tasks like refrigerant leakage and air removal.

Gree LSQWRF65VM/NaA-M Specifications

General

Brand	Gree
Model	LSQWRF65VM/NaA-M
Category	Chiller
Language	English

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