Gree A Series Installation, Start-Up And Maintenance Manual

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

LSQWRF35VM/NaA-M、LSQWRF60VM/NaA-M

LSQWRF65VM/NaA-M、LSQWRF70VM/NaA-M

Table of Contents

Other manuals for Gree A Series

Service Manual139 pages

Questions and Answers:

K
Karen WilliamsAug 15, 2025
What to do if Gree Heat Pump compressor fails to start?
- A
  Alexa GonzalezAug 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.
M
marc32Aug 18, 2025
Why does my Gree Heat Pump shut down due to high pressure?
- V
  Vanessa ThompsonAug 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.
S
Scott RogersAug 21, 2025
What to do if Gree Heat Pump shuts down due to compressor motor overload?
- M
  matthewsshannonAug 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.
J
Juan SantanaAug 25, 2025
Why does my Gree Heat Pump shut down with low pressure protection?
- R
  Richard AtkinsAug 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.
R
Rebecca NewtonAug 27, 2025
What causes flow switch protection in Gree Heat Pump?
- X
  xhuffAug 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.
C
Cathy MorenoAug 31, 2025
How to fix temperature sensor protection on Gree Heat Pump?
- T
  Timothy RussellAug 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.
H
Heather ReidSep 3, 2025
What does pressure transducer error mean on Gree Heat Pump?
- V
  Valerie MillsSep 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
Andrew SmithSep 6, 2025
Why is my Gree Heat Pump showing protection against a failed 4-way valve?
- V
  Vincent BeasleySep 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.
K
Kimberly TaylorSep 9, 2025
What causes protection against failed compressor IPM module in Gree Heat Pump?
- C
  Cameron PowellSep 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.
J
Jennifer FuentesSep 12, 2025
What to do if Gree Heat Pump discharge temperature sensor failed?
- D
  Daniel KimSep 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.

Gree A Series Specifications

General

Brand	Gree
Model	A Series
Category	Chiller
Language	English

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