Gree GMV-ND22T/B-T User Manual

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Multi Variable Air Conditioners Cassette Type Indoor Unit

6 Routine Maintenance

Warning:

① Do turn off the unit and cut off the main power supply when cleaning the air conditioner to

avoid electric shock or injury.

② Stand at solid table when cleaning the unit.

③ Do not clean the unit using hot water of over 45°C to prevent the unit from losing color or

deforming.

④ Do not dry the filters by fire, or it may catch fire or become deformed.

⑤ Clean the filter with a wet cloth dipped in neutral detergent.

⑥ Please contact after-sales service staff if there is abnormal situation.

6.1 Cleaning of Filter

(1) Remove the air filter on the air inlet for cleaning. Use a dust catcher or water to clean it.

If the filter is very dirty(e.g. greasy), you can clean it using warm water(below 45°C) that

is mixed with mild detergent. Then let it dry naturally in cool places;

(2) If the air conditioner is used in dusty place, please clean the air filter regularly (generally

once every 2 weeks).

6.2 Maintenance before the Seasonal Use

(1) Check if the air inlet and air outlet of indoor and outdoor unit are blocked.

(2) Check if the grounding wire is in good condition.

(3) Check if all the power cord and communication cable are securely connected.

(4) Check if any error code displayed after energized.

6.3 Maintenance after the Seasonal Use

(1) Set the unit in fan mode for half a day in a sunny day to dry the inner part of unit;

(2) When the unit won’t be used for a long time, please cut off power supply for energy

saving; the characters on the wired controller screen will disappear after cutting off the

power supply.

7 Table of Error Codes for Indoor Unit

Error

Code

Content

Error

Code

Content

Error

Code

Content

Indoor Unit Error

Indoor Units Incompatibility

Error

Jumper Cap Error

Indoor Fan

Protection

Low Air Quanlity Warning

Indoor Unit Network Address

Error

E-heater Protection

ODU-IDU Incompatibility

Error

Wired Controller PCB Error

Water Full

Protection

Indoor Unit PCB Error

Capacity DIP Switch Setting

Error.

Wired Controller

Power Supply

Error

Ambient Temperature

Sensor Error

Indoor Unit CO2 Sensor

Error

Freeze protection

Inlet Pipe Temperature

Sensor Error

Capacity DIP Switch Setting

Error.

No Master Indoor

Unit Error

Outlet Pipe Temperature

Sensor Error

Special Code: Field

Debugging Code

Power Insufficiency

Protection

Humidity Sensor Error

Communication Error

Other manuals for Gree GMV-ND22T/B-T

Service Manual227 pages

Questions and Answers:

A
Antonio GlennAug 18, 2025
Why is my Gree GMV-ND22T/B-T not cooling properly?
- L
  Laura CastilloAug 18, 2025
  Several factors can contribute to a poor cooling effect in your Gree Air Conditioner. The filter might be dirty or blocked, or the room may have too heavy a heat load due to many people. Open doors or windows, blocked inlet and outlet of the IDU, a too high temperature setting, refrigerant leaks, or a deteriorating room temperature sensor could also be responsible.
K
Kevin DiazAug 20, 2025
How to fix mode shock in Gree Air Conditioner?
- R
  Ryan ReynoldsAug 20, 2025
  If your Gree Air Conditioner is experiencing mode shock, try resetting the unit to eliminate the mode shock.