Vaillant V 12-025 W User Manual

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For the user

V 12-025 W

V 12-035 W

V 12-050 W

V 12-060 W

V 12-060 M2W

User Manual

Air Conditioner - climaVAIR

Split Wall-Mounted type

EN

Table of Contents

Questions and Answers:

L
Linda PenningtonJul 31, 2025
How to troubleshoot a Vaillant V 12-025 W that won't turn on?
- M
  Mary HullAug 1, 2025
  If your Vaillant Air Conditioner isn't starting, several factors could be at play. First, ensure the selector is set to "I" (start) and not "O" (stop). Check that the unit is properly plugged into the power supply and that the power supply is connected. Also, verify that the thermostat isn't set too high in Cooling mode or too low in Heating mode; adjust accordingly. Confirm that the operating time is set to ON via the remote controller, and replace the remote's batteries if they're depleted. For fuse issues, continuous tripping, or very low line voltage, it's best to consult after-sales service or your electrician.
V
Veronica DennisAug 5, 2025
Why is my Vaillant V 12-025 W Air Conditioner not cooling or heating sufficiently?
- D
  davisjasonAug 6, 2025
  If your Vaillant Air Conditioner isn't cooling or heating enough, start by closing any open doors and windows. Remove any nearby heat sources, and make sure the thermostat is set correctly for your desired temperature. Check for obstructions in front of the air inlet or outlet of both the indoor and outdoor units, and remove any obstacles to ensure proper air circulation. If the ambient temperature hasn't reached the set level, allow the unit some time to adjust. Lastly, inspect the air filter for dirt or blockages and clean it if necessary.
J
Jasmine WilliamsAug 10, 2025
What to do if Vaillant Air Conditioner is cooling/heating too much or not at all?
- M
  Mary GreerAug 10, 2025
  If your Vaillant Air Conditioner is excessively cooling/heating or not doing it at all, first verify that the correct operating mode (COOL/HEAT) is selected. Ensure that there are no obstructions blocking the air inlet or outlet on either the indoor or outdoor unit. Note that in DRY mode, the airflow may stop periodically to prevent moisture and save energy. Mist coming from the unit in COOL mode can occur in high humidity and temperature conditions; lower these levels to resolve it. In HEAT mode, airflow may be delayed until the air is warm enough, and during defrosting (in low outdoor temperatures and high humidity), the unit may pause airflow for 6 to 12 minutes.
E
Erika SteeleAug 15, 2025
Why can't I restart my Vaillant Air Conditioner right after disconnecting it?
- M
  Michelle PattersonAug 16, 2025
  If you're unable to restart your Vaillant Air Conditioner immediately after disconnecting it, this is likely because the compressor protection has been activated. You need to wait three minutes before attempting to restart the unit.
J
jhesterAug 21, 2025
What to do if the LCD on my Vaillant V 12-025 W Air Conditioner remote is blurred?
- Y
  yolandawilsonAug 21, 2025
  If the LCD on your Vaillant Air Conditioner remote controller is blurred or shows all indicators, the batteries have likely run out. Replace them with fresh ones.
J
John HallAug 25, 2025
Why does my Vaillant V 12-025 W Air Conditioner remote not work properly?
- B
  Benjamin MoralesAug 26, 2025
  If the remote controller for your Vaillant Air Conditioner isn't working properly, it might not be sending signals correctly. This can happen if the remote is exposed to direct sunlight or strong lighting. Try removing the light source.

Vaillant V 12-025 W Specifications

General

Brand	Vaillant
Model	V 12-025 W
Category	Air Conditioner
Language	English

Summary

Your Safety

Symbols used

Explains the meaning of danger, warning, and note symbols used in the manual.

Proper Use of the Unit

Details the intended use of the air conditioner and user responsibilities.

Extreme Operating Conditions

Operating Ranges

Details the operational temperature ranges for cooling and heating modes.

Identification of the Unit

Declaration of Conformity

Description of the Unit

Remote Controller

Introduces the infra-red remote controller and its function.

Features and Benefits

Lists key functions and advantages of the air conditioning unit.

Getting Started

Fitting the Remote Controller Batteries

Step-by-step guide on how to insert batteries into the remote controller.

Operating Instructions

General Safety Considerations during Use

Essential safety warnings and precautions for operating the air conditioner.

Remote Controller Buttons

Identifies and explains the functions of each button on the remote control.

Display Indicators

Explains the various indicators shown on the remote control display.

Advice on how to use the Remote Controller

Provides recommendations for effective and optimal use of the remote controller.

Connection/Disconnection of the Unit

Instructions on how to turn the air conditioning unit on and off.

LIGHT/LOCK functions

Details the functions of the LIGHT and LOCK buttons on the remote control.

Selection of the Operation Mode

Guides on selecting operating modes like AUTO, COOL, DRY, and HEAT.

Defrosting

Explains the automatic defrosting process and potential steam generation.

Setting the Direction of the Airflow

Covers manual and automatic adjustment of horizontal and vertical airflow.

TURBO

Details the TURBO mode for maximum fan speed operation.

SLEEP function

Explains the SLEEP mode for night operation and temperature adjustment.

TIMER Function (CONNECTION USING TIMER)

Describes setting automatic ON/OFF times using the timer function.

Indicators of the unit

Explains the various indicators displayed on the indoor unit.

Advice on saving Energy

Suitable room Temperature

Recommends setting appropriate temperatures for comfort and economy.

Eliminating Heat or Cold Sources

Advises on reducing heat/cold sources to improve efficiency.

Operation in Heating Mode (Heat Pump)

Explains the heat pump principle and its economy.

Ambient Temperature when absent

Suggests reducing temperature when away to save energy.

Uniform Heating

Discusses the benefits of heating all rooms uniformly.

Reduction in Consumption during Night Hours (SLEEP Function)

Links SLEEP function to reduced electricity consumption.

Reduction in Consumption with programmed Operating Time (TIMER Function)

Explains how TIMER function helps reduce consumption.

Appropriate Maintenance of the Unit

Stresses the importance of maintenance for efficiency and energy saving.

Troubleshooting

Maintenance

Cleaning the Indoor Unit

Instructions for cleaning the exterior and inlet surface of the indoor unit.

Cleaning the Air Filters

Guide on how to remove, clean, and dry air filters for optimal efficiency.

Cleaning the Outdoor Unit

Instructions for cleaning the exterior, inlet surface, and fins of the outdoor unit.

Storage over a prolonged Period

Product Decommissioning

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