Mitsubishi Electric CLIMAVENETA BRAN2 0021M User Manual (English)

Questions and Answers:

M
Mike WhiteAug 15, 2025
How to troubleshoot a Mitsubishi Electric CLIMAVENETA BRAN2 0021M Heat Pump that doesn't start?
- R
  ronaldjonesAug 15, 2025
  If your Mitsubishi Electric Heat Pump isn't starting, begin by checking for a power failure to ensure voltage is present. If power is available, the contactor coil, HSW15 controller, or the start-up capacitor (if your unit has one) could be faulty and may need replacement. In some cases, the compressor itself may be faulty, or for three-phase units, the phases might be reversed.
J
Joseph HernandezAug 18, 2025
Why is my Mitsubishi Electric CLIMAVENETA BRAN2 0021M Heat Pump not producing enough heat?
- D
  Daniel Vaughn MDAug 18, 2025
  If your Mitsubishi Electric Heat Pump has insufficient capacity, check if there is insufficient refrigerant. The unit might also be sized too small, or it might be operating outside of recommended limits.
M
Mark SmithAug 21, 2025
What to do if protection devices trip in my Mitsubishi Electric CLIMAVENETA BRAN2 0021M Heat Pump?
- R
  rhondariveraAug 21, 2025
  If protection devices trip and shut down the compressor in your Mitsubishi Electric Heat Pump, the issue might stem from several causes. You should check for excessive discharge pressure, low suction pressure, low voltage, or electrical connections that are not sufficiently tight. Also consider if the operation is outside permitted limits.
C
Caitlin RyanAug 25, 2025
What causes high discharge pressure in a Mitsubishi Electric CLIMAVENETA BRAN2 0021M?
- J
  John GarnerAug 26, 2025
  If the discharge pressure of your Mitsubishi Electric Heat Pump is higher than 32 bars, check for high outside water temperature. Also, consider the possibility of a high utility water inlet temperature.
J
Justin BurtonAug 28, 2025
Why is the compressor in my Mitsubishi Electric CLIMAVENETA BRAN2 0021M Heat Pump so noisy?
- S
  Samantha BaldwinAug 28, 2025
  If your Mitsubishi Electric Heat Pump's compressor is noisy, it could be due to liquid returning to the compressor, which you should check. Inadequate fastening may also be the cause.
D
Debra PrattAug 31, 2025
What causes high suction pressure in my Mitsubishi Electric CLIMAVENETA BRAN2 0021M Heat Pump?
- K
  Kendra ThomasAug 31, 2025
  If the suction pressure of your Mitsubishi Electric Heat Pump is higher than 20 bars, check for high utility water inlet temperature. It's also possible that the thermostatic expansion valve is faulty or excessively open.
J
John ThompsonSep 3, 2025
What causes low discharge pressure in my Mitsubishi Electric CLIMAVENETA BRAN2 0021M?
- K
  katherinechavezSep 4, 2025
  If the discharge pressure of your Mitsubishi Electric Heat Pump is lower than 16 bars, check for low utility water inlet temperature.
M
Monique TuckerSep 7, 2025
What causes low suction pressure in my Mitsubishi Electric CLIMAVENETA BRAN2 0021M?
- C
  Christina JohnsonSep 7, 2025
  If the suction pressure of your Mitsubishi Electric Heat Pump is lower than 4 bars, check for low utility water inlet temperature and low outside water inlet temperature. Also, check if the thermostatic expansion valve is faulty or blocked.
D
Darryl ShieldsSep 10, 2025
What to do if I find loose screws in my Mitsubishi Electric Heat Pump?
- D
  deanbrandySep 12, 2025
  If you find loose screws in your Mitsubishi Electric Heat Pump, tighten them.

Mitsubishi Electric CLIMAVENETA BRAN2 0021M Specifications

General

Brand	Mitsubishi Electric
Model	CLIMAVENETA BRAN2 0021M
Category	Heat Pump
Language	English

Summary

General Warnings

Waiver of Liability

Fundamental Safety Rules

Receiving, Handling and Installing the Product

Choice of Installation Site

Guidance on selecting the appropriate location for unit installation.

Handling and Positioning

Instructions for safely moving and placing the unit.

Characteristics

Component Identification

Identifies and labels key components within the unit diagrams.

Dimensioned Drawings

Dimensions and Weight Tables

Provides detailed physical dimensions and weight distributions for different models.

Water Connections

Installation Recommendations

Details required components and best practices for water circuit installation.

Risk of Freezing

Ethylene Glycol Solutions

Information on using antifreeze for frost protection and its performance impact.

Water Quality

Specifies the required characteristics for system and domestic hot water.

Size and Positioning of Connections, BRAT2 and BRAN2

Connection Points and Dimensions

Details the physical dimensions and connection locations for models.

Condensate Drain

Condensate Drain Installation

Provides steps for correctly installing and managing condensate drainage.

Filling the System

Procedure for Filling the Water Circuit

Step-by-step guide on how to fill the unit's water system.

Emptying the System

Procedure for Emptying the Water Circuit

Instructions on how to safely drain the unit's water system.

Electrical Connections

Installation Requirements

Outlines prerequisites and safety for electrical connections.

Electrical Data, BRAT2 and BRAN2 Without Hydronic Kit

Technical Specifications and Fuse Ratings

Lists electrical data, power supply, and fuse details for models.

Electrical Data, BRAT2 and BRAN2 With Hydronic Kit

Technical Specifications and Fuse Ratings

Lists electrical data, power supply, and fuse details for models with hydronic kit.

Mains Power Supply Connections

Connection Procedure

Steps for safely connecting the unit to the main power supply.

Installer Connections

Remote Control and Alarm Connections

Details on connecting remote on/off, alarm, and changeover devices.

Compressor Status Signal

Instructions for connecting a signal for compressor operating status.

Outside Air Probe (BT3) (Accessory)

Installation and Mounting

Guides for installing the outdoor air sensor for temperature compensation.

Remote Keypad Kit (A5) (Accessory)

Installation and Connection

Instructions for connecting the remote keypad for unit control.

Flow Switch Connection (F3)

Connection to Terminals

Specifies how to connect the flow switch for unit operation.

General Technical Data

BRAT2 Without Hydronic Kit

Performance and technical data for BRAT2 units without hydronic kit.

BRAT2 With Hydronic Kit

Performance and technical data for BRAT2 units with hydronic kit.

General Technical Data

BRAN2 Without Hydronic Kit

Performance and technical data for BRAN2 units without hydronic kit.

BRAN2 With Hydronic Kit

Performance and technical data for BRAN2 units with hydronic kit.

Operating Limits

Cooling Operation Range

Defines the operational limits for cooling mode based on temperatures.

Heating Operation Range

Defines the operational limits for heating mode based on temperatures.

Pressure Drop and Pressure Head Available to System

System Heat Exchanger Pressure Drop

Graphs showing pressure drop across the heat exchanger for different flow rates.

Available Pressure Head, Unit with Hydronic Kit

Graphs showing available pressure head from the pump for different flow rates.

Pressure Drop and Pressure Head Available to System

Pump Control Modes

Details pump control modes (Constant ΔP, Variable ΔP).

Checking and Starting Up the Unit

Preparing for First Start Up

Checklist for initial unit startup procedures.

Starting Up for the First Time

Steps for the initial activation of the unit.

Activating and Deactivating the Unit

Instructions for turning the unit on and off.

LEDs and Display

Status and Operating Mode LEDs

Explains the meaning of various status and mode indicator lights.

Value and Unit of Measure LEDs

Explains indicators for clock, temperature, pressure, and menu.

Utility LEDs

Describes indicator lights for compressor, fans, and pump status.

Setting the Clock

Setting Time, Date, and Year

Guides for configuring the unit's internal clock settings.

Scheduler Setting

Programming Example

Illustrates how to define and associate time bands and profiles.

Setting Time Bands and Profiles

Procedure for programming time bands and daily profiles.

Selecting the Operating Mode

Available Operating Modes

Describes the different modes: Standby, Cooling, Heating.

Setting the Set Points

Changing Cooling Set Point

Example procedure for adjusting the cooling temperature set point.

Setting the Parameters

Accessing Parameter Directory

Steps to access the parameter settings with password.

Setting Parameter Values

How to navigate and change parameter values.

Resetting the Alarm Log

Procedure to Reset Alarm Log

Steps for clearing the unit's historical alarm data.

Displaying and Resetting Compressor / Pump Hours

Displaying Operating Hours

How to view compressor and pump operating hours.

Resetting Operating Hours

Procedure for resetting compressor and pump operating hour counters.

List of Accessible Parameters

Parameter Directory Overview

Lists accessible parameters and their purpose.

Displaying Alarms

Fault Causes and Solutions

Details common faults, their causes, and recommended solutions.

Peak Limiter Alarm Signals

Single-Phase Peak Limiter Alarms

Explains alarm conditions and actions for single-phase systems.

Three-Phase Peak Limiter Alarms

Explains alarm conditions and actions for three-phase systems.

Operating Characteristics

Cooling and Heating Set Points

Defines default cooling and heating set points and hysteresis.

Compressor Start-Up Delay

Explains functions preventing frequent compressor cycling.

Circulating Pump Control

Describes the pump operation logic.

Fan Speed Control

How fan speed is managed for optimal heat exchange.

Frost Alarm

Details the frost protection function and its triggers.

Water Flow Alarm

Explains the water flow alarm mechanism and reset.

System Water Set Point Compensation

Outside Temperature Influence

How outside temperature affects water set points.

Shutting Down for Long Periods

Procedures for Extended Shutdown

Steps to safely shut down the unit for long periods.

Routine Maintenance

Annual Maintenance Checks

Lists essential checks for annual technical service.

Unscheduled Maintenance

General Precautions

Safety notes for any maintenance work.

Chemical Washing

Heat Exchanger Cleaning Recommendation

Suggests periodic chemical flushing of the heat exchanger.

Refrigerant Gas Content

Handling R-410A Refrigerant

Information on refrigerant leaks, repair, and recharging.

Disposal

Environmental Disposal Guidelines

Notes on how to dispose of the unit according to regulations.

Troubleshooting

Unit Fails to Start

Identifies causes and solutions for the unit not starting.

Insufficient Capacity

Troubleshooting steps for reduced cooling/heating output.

Compressor Noisy

Diagnosing and resolving compressor noise issues.

Noise and Vibrations

Addressing general noise and vibration problems.

Protection Devices Trip

Troubleshooting when protection devices shut down the compressor.

Troubleshooting

High Discharge Pressure

Causes and solutions for high discharge pressure faults.

Low Discharge Pressure

Causes and solutions for low discharge pressure faults.

High Suction Pressure

Causes and solutions for high suction pressure faults.

Low Suction Pressure

Causes and solutions for low suction pressure faults.

Useful Information

Technical Assistance and Spare Parts

Contact details for technical support and spare parts.

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Mitsubishi Electric CLIMAVENETA BRAN2 0021M User Manual

Table of Contents

Questions and Answers:

Mitsubishi Electric CLIMAVENETA BRAN2 0021M Specifications

Summary

General Warnings

Waiver of Liability

Fundamental Safety Rules

Receiving, Handling and Installing the Product

Choice of Installation Site

Handling and Positioning

Characteristics

Component Identification

Dimensioned Drawings

Dimensions and Weight Tables

Water Connections

Installation Recommendations

Risk of Freezing

Ethylene Glycol Solutions

Water Quality

Size and Positioning of Connections, BRAT2 and BRAN2

Connection Points and Dimensions

Condensate Drain

Condensate Drain Installation

Filling the System

Procedure for Filling the Water Circuit

Emptying the System

Procedure for Emptying the Water Circuit

Electrical Connections

Installation Requirements

Electrical Data, BRAT2 and BRAN2 Without Hydronic Kit

Technical Specifications and Fuse Ratings

Electrical Data, BRAT2 and BRAN2 With Hydronic Kit

Technical Specifications and Fuse Ratings

Mains Power Supply Connections

Connection Procedure

Installer Connections

Remote Control and Alarm Connections

Compressor Status Signal

Outside Air Probe (BT3) (Accessory)

Installation and Mounting

Remote Keypad Kit (A5) (Accessory)

Installation and Connection

Flow Switch Connection (F3)

Connection to Terminals

General Technical Data

BRAT2 Without Hydronic Kit

BRAT2 With Hydronic Kit

General Technical Data

BRAN2 Without Hydronic Kit

BRAN2 With Hydronic Kit

Operating Limits

Cooling Operation Range

Heating Operation Range

Pressure Drop and Pressure Head Available to System

System Heat Exchanger Pressure Drop

Available Pressure Head, Unit with Hydronic Kit

Pressure Drop and Pressure Head Available to System

Pump Control Modes

Checking and Starting Up the Unit

Preparing for First Start Up

Starting Up for the First Time

Activating and Deactivating the Unit

LEDs and Display

Status and Operating Mode LEDs

Value and Unit of Measure LEDs

Utility LEDs

Setting the Clock

Setting Time, Date, and Year

Scheduler Setting

Programming Example

Setting Time Bands and Profiles

Selecting the Operating Mode

Available Operating Modes

Setting the Set Points

Changing Cooling Set Point

Setting the Parameters

Accessing Parameter Directory

Setting Parameter Values

Resetting the Alarm Log