Baxi Eco Compact - User Manual

Questions and Answers

S
Shannon BrownAug 21, 2025
Why does my Baxi Eco Compact Boiler shut down due to probable obstruction of air-flue duct or insufficient gas inlet pressure?
- D
  Denise WangAug 21, 2025
  Your Baxi Boiler might shut down because of: * Insufficient gas inlet pressure: Check the gas supply pressure. * Disconnected gas valve modulator wires: Check the connection to the electronic board. * Faulty or mispositioned flame sensing electrode: Inspect its condition and position. * Faulty or mispositioned Fumes NTC probe: Check the probe. * Obstructed air-flue duct: Ensure the ducts are clear and correctly installed. * Faulty gas valve or electronic board: Have these components checked. Also, make sure that the pressure at the burner has been correctly calibrated.
J
Jermaine TylerSep 3, 2025
What to do if my Baxi Boiler has DHW sensor fault?
- R
  rwilsonSep 3, 2025
  If your Baxi Boiler shows a DHW sensor fault: * Check the DHW NTC probe. * Check the continuity of the DHW probe wiring. * Make sure the wiring has not shorted.
A
Amanda LewisSep 1, 2025
What does it mean if my Baxi Eco Compact switches off due to power supply reductions?
- R
  Robin RodriguezSep 1, 2025
  If your Baxi Boiler switches off due to power supply reductions: * Check if the supply voltage is less than 162V (it will automatically reset at V> 168V). * If the power supply reductions are due to reasons other than the boiler, contact the electricity provider. * A faulty electronic board could also be the cause.
A
Alexander NorrisAug 30, 2025
What to do if my Baxi Eco Compact has no hydraulic pressure switch enable?
- A
  andrewcarterAug 30, 2025
  If your Baxi Boiler shows no hydraulic pressure switch enable: * Check if the pressure in the CH circuit is less than 0.5 bar; if so, perform filling. * Verify the hydraulic pressure switch is working correctly. * Check the continuity of the hydraulic pressure switch wiring.
A
amurrayAug 29, 2025
What causes a Baxi Boiler to operate at reduced power?
- N
  Norman WoodardAug 29, 2025
  A Baxi Boiler may operate at reduced power due to: * Insufficient gas inlet pressure: Verify the gas supply pressure. * Disconnected gas valve modulator wires: Check the connection of these wires to the electronic board. * Faulty or mispositioned flame sensing electrode: Inspect its condition and position. * Partially obstructed air-flue duct: Ensure the ducts are clear and correctly installed. * Faulty gas valve or electronic board: Have these components checked. Also, check that the pressure at the burner has been correctly calibrated.
C
Carlos MyersAug 27, 2025
What to do if my Baxi Eco Compact Boiler shuts down due to safety thermostat?
- S
  Scott WatsonAug 27, 2025
  If your Baxi Boiler shuts down due to the safety thermostat, consider the following: * Check for water in the primary circuit, ensuring the pump isn't blocked and the exchanger isn't obstructed. You can try unscrewing the front cap and releasing the pump impeller with a screwdriver. * Inspect the limit thermostat for damage and replace if necessary. Also, check the continuity of the limit thermostat wiring. * Check the CH flow NTC probe. * Make sure the exchanger is not clogged. Also, check the pump power input wiring.
R
Robert MurphyAug 26, 2025
Why does my Baxi Eco Compact Boiler shut down for ignition failure?
- S
  Sandra Whitaker DDSAug 26, 2025
  Your Baxi Boiler might shut down due to several reasons: * No inlet gas pressure: Ensure the gas valve is open and there's no air in the gas supply. * Interrupted ignition switch-flame sensor wire: Check the wire for continuity and good contact. * Faulty or mispositioned flame sensing electrode: Inspect the electrode's condition and position. * Faulty gas valve: Have the gas valve checked. * Faulty electronic board: Have the electronic board checked. Also, check the gas supply pressure and the connections between the gas valve and the electronic board.
S
smithpamelaAug 25, 2025
What to do if my Baxi Eco Compact Boiler has no flame?
- A
  Amanda CastroAug 25, 2025
  If your Baxi Boiler has no flame: * Check if the fan is working (check for faults or power). * Make sure the air and flue ducts are not obstructed and have been correctly installed. * A faulty electronic board could also be the cause. Also, check that the fan power supply wiring is connected to the electronic board.
P
Philip DavisAug 23, 2025
What to do if my Baxi Boiler has parasite flame (flame error)?
- J
  Jason RomanAug 23, 2025
  If your Baxi Boiler shows a parasite flame error: * Check the continuity of the earth connections between the electronic board and the power supply terminal block. * Check the flame sensing electrode is in good condition and correctly positioned.

Summary

General Safety Information

Symbol Definitions and Warnings

Explanation of warning symbols and their meaning for safe operation.

Safety Precautions and Servicing Guidelines

Essential safety measures for gas, fumes, flammable materials, and basic servicing.

Precautions and Energy Efficiency

System Handling and Water Circuit Precautions

Guidelines for DHW and heating circuits, including cleaning and water quality.

Energy Saving Tips for Heating and Hot Water

Recommendations for optimizing boiler performance and reducing energy consumption.

Boiler Commissioning and Controls

Ignition Procedure and Temperature Adjustment

Step-by-step guide for lighting the boiler and setting heating/DHW temperatures.

Understanding Control Panel Symbols and Buttons

Key to symbols, icons, and buttons used on the boiler's control interface.

Operation Modes and System Management

Operating Modes and System Filling Procedure

Instructions for selecting operating modes and filling the heating system correctly.

Gas Conversion and Frost Protection Features

Details on converting gas types and the boiler's anti-freeze protection function.

Fault Diagnosis and Maintenance

Troubleshooting Service Faults and Error Codes

Guide to identifying, resetting, and resolving boiler faults using error codes.

Routine Maintenance Recommendations

Importance and overview of annual servicing for optimal boiler efficiency and safety.

Installation Preparations and Basics

Pre-Installation Checks and Site Requirements

Essential checks, warnings, and site considerations before installing the boiler.

Boiler Mounting and Duct Installation Overview

Steps for mounting the boiler and general principles for installing flue and air ducts.

Flue and Air Duct Installation Details

Concentric Duct System Installation

Guidelines for installing concentric flue and air ducts, including bend allowances.

Separate Duct System Installation

Instructions for installing separate flue and air ducts, including accessory use.

Electrical Connections and Ducting Notes

Notes for Separate Outlet Duct Installations

Specific considerations for installations using separate flue and air outlets.

Electrical Safety and Power Supply Connection

Ensuring electrical safety and proper connection to the power supply terminal block.

Accessory Connections for Boiler Functionality

Room Thermostat and External Probe Wiring

Connecting room thermostats and external temperature probes for system control.

Storage Boiler and 3-Way Valve Connections

Wiring instructions for external storage boilers and 3-way valve motors.

Gas Valve System Operations

Gas Conversion Procedure and Requirements

Steps for converting the boiler to different gas types and parameterizing the electronic board.

Mechanical Gas Valve Pressure Calibration

Procedure for mechanically adjusting the gas valve pressure regulator for optimal performance.

Gas Valve Calibration and Replacement

Electronic Gas Valve Calibration Steps

Detailed steps for electronically calibrating the gas valve for different heat outputs.

Gas Valve Replacement and Final Checks

Procedure for replacing the gas valve and performing final calibration checks.

Electronic Board Management and Info Function

Electronic Board Replacement and Calibration

Instructions for replacing the electronic board and recalibrating the gas valve.

Accessing Boiler Operating Parameter Information

How to use the 'INFO' function to view current boiler operating parameters.

Parameter Settings and Configuration

Entering and Editing Boiler Parameters

Procedure for accessing, modifying, and saving boiler operating parameters.

Comprehensive Parameter Configuration Table

Reference table detailing all adjustable parameters and their factory settings.

Service Fault Diagnosis - Part 1

Fault Codes E01-E22 and User Reset Procedure

Identifying and resetting common boiler faults indicated by error codes.

Understanding Fault Causes and Service Actions

Guide to diagnosing fault causes and recommended service actions from the fault table.

Service Fault Diagnosis - Part 2

Fault Codes E25-E65 and Potential Issues

Detailed troubleshooting for boiler faults indicated by error codes E25 through E65.

Service Fault Diagnosis - Part 3

Fault Code E98 and Flashing Light Indicators

Troubleshooting for electronic board configuration errors and flashing light fault indicators.

Safety Features and Pump Performance

Overview of Boiler Safety Devices

Description of key safety devices like limit thermostat, pressure switch, and anti-freeze.

Pump Performance Data and Head Charts

Information on pump capacity, head, and performance curves for system matching.

Annual Servicing and Component Maintenance

Annual Servicing Precautions and Checklist

Steps and checks for performing annual boiler servicing and maintenance.

Hydraulic Unit, Electrode, and Filter Maintenance

Procedures for cleaning filters, maintaining the hydraulic unit, and positioning the electrode.

DHW Circuit Maintenance and Combustion Analysis

DHW Scale Removal and Heat Exchanger Cleaning

Methods for removing scale from the DHW circuit and dismantling the heat exchanger.

Combustion Parameter Measurement Guide

Procedures for measuring combustion efficiency and analyzing flue gas parameters.

Technical Specifications and Consumption Data

Boiler Model and Performance Specifications

Detailed technical data including heat output, efficiency, and dimensions.

Gas Consumption and Flow Rate Data

Specifications related to gas consumption (Qmax, Qmin) for different gas types.

Baxi Eco Compact Specifications

General

Model	Eco Compact
Type	Combi Boiler
Output	24 kW
Dimensions	700 x 390 x 285 mm
Mounting	Wall-mounted
Fuel Type	Natural Gas
Central Heating Output (kW)	24 kW
Domestic Hot Water Flow Rate (l/min)	9.8 l/min
Weight	29.5 kg
Efficiency Rating	ErP A-rated