Repair Advice for Common Baxi Boiler Problems

Maintaining the efficiency and longevity of your Baxi boiler is important for any homeowner. However even the most reliable appliances can experience issues so in this article we will cover some of the most common problems that Baxi boilers can encounter and offer tips on how to fix them. Everything from low pressure to faulty parts we'll provide the information you need to troubleshoot and repair any issues that come up. Whether you're comfortable with DIY repairs or you prefer to hire a professional this article will be a helpful resource for keeping your Baxi boiler in top shape.

Ignition Failure

If your Baxi boiler is not igniting it could be caused by a variety of issues. It is important to address this problem as soon as possible as a failed ignition can prevent your boiler from providing heat and hot water.

Symptoms of a failing ignition:

• Boiler does not start up when the heating or hot water is turned on.
• Pilot light goes out or is not present.

Possible causes of a failing ignition:

• Dirty or blocked burners.
• Faulty ignition components (e.g. ignition electrode, spark generator).
• Low gas pressure.
• Faulty thermostat or control.

How to fix a failing ignition:

1. Shut off the power supply to the boiler and let it cool down.
2. Check the gas supply and ensure that the gas valve is fully open.
3. Inspect the burners for dirt or blockages and clean as necessary.
4. Test the ignition components for proper function and replace if necessary.
5. Check the thermostat and control for any issues and replace if necessary.

It is important to properly address a failing ignition to ensure the safe and efficient operation of your Baxi boiler so if you are unable to fix the issue on your own do not hesitate to contact a professional for assistance.

Broken Burner (Error Code 128)

One common problem that can occur with Baxi boilers is a broken burner, specifically the Baxi 128 burner. A broken burner can cause the boiler to stop functioning and may require replacement. It is important to address this issue as soon as possible to avoid further damage to the boiler.

Symptoms of a broken burner:

• Boiler shuts off or fails to ignite
• Fault code displayed on the boiler's control panel
• Burner flame appears weak or uneven

How to fix a broken burner:

1. Shut off the power supply to the boiler and let it cool down.
2. Visually inspect the burner for any visible damage or malfunction.
3. Contact a professional to diagnose the issue and determine if the burner needs to be replaced.

Continuing to use a boiler with a broken burner can cause further damage and may even be dangerous.

Leaking Water (Error H.02 – .06)

If your Baxi boiler is experiencing water leaks it is important to address the problem as soon as possible to prevent further damage. Water leaking is often caused by a faulty valve or pressure relief pipe.

Symptoms of a water leak:

• Visible water pooling around the base of the boiler.
• Reduced heating performance.
• Higher energy bills.

How to fix a water leak:

1. Shut off the power supply to the boiler and let it cool down.
2. Locate the source of the leak - It is likely caused by a faulty valve or pressure relief pipe.
3. Replace the faulty valve or pressure relief pipe with a new one.

Ignoring a water leak can cause serious damage to your boiler and potentially create a safety hazard, if you are unable to fix the leak on your own it is important to contact a qualified engineer to diagnose and repair the problem.

Frozen Condensate Pipe (Error Codes E133 or E28)

If the temperature outside drops below zero it is possible for the condensate pipe on your Baxi boiler to freeze. This can cause the boiler to display an E133 or E28 error code and stop functioning. A frozen condensate pipe can be a serious issue if left unaddressed as it can lead to damage to the boiler.

Symptoms of a frozen condensate pipe:

• E133 or E28 error code displayed on the boiler
• Boiler not functioning

How to fix a frozen condensate pipe:

1. Shut off the power supply to the boiler and let it cool down.
2. Locate the condensate pipe and ensure it is not frozen or blocked.
3. If the pipe is frozen, use a hair dryer or warm water to gently thaw it out. Do not use an open flame or heat gun, as this can damage the plastic pipe.
4. Once the pipe is thawed, restart the boiler and check for any error codes. If the error persists, contact a professional for further assistance.

If you are unable to fix the issue on your own it is important to contact a qualified engineer to diagnose and repair the problem. Continuing to use a boiler with a frozen condensate pipe can cause damage and may even be dangerous.

No Hot Water Produced

Lack of hot water is a common issue that can occur with Baxi boilers. This problem can have a variety of causes including low pressure, a faulty thermostat or a malfunctioning diverter valve. Without hot water your daily routine can be disrupted so it's important to address this issue as soon as possible.

Symptoms of no hot water:

• Lack of hot water for showers, washing dishes, etc.
• Boiler making strange noises.
• Boiler not turning on or staying on.

How to fix no hot water:

1. Check the pressure gauge on the boiler. If the pressure is too low try re-pressurising the system according to the manufacturer's instructions. If the pressure continues to drop there may be a leak in the system.
2. Check the thermostat to ensure it is set correctly and functioning properly. Replace the batteries if necessary.
3. Inspect the diverter valve for any signs of damage or obstruction. If the valve is faulty it may need to be replaced.

By following these steps you may be able to resolve the issue of no hot water on your own. However if the problem persists or you are unsure of the cause it is best to contact a qualified engineer for assistance.

Low Pressure

Low pressure in a Baxi boiler can cause a variety of issues including reduced heating performance and issues with the central heating system. It is important to regularly check the pressure of your boiler and refill it if necessary to ensure optimal performance.

Symptoms of low boiler pressure:

• Reduced heating performance.
• Central heating system not working properly.
• Pressure gauge reading below 1 bar.

How to fix low boiler pressure:

1. First you should locate the filling loop and pressure gauge. The filling loop is usually a flexible hose located near the boiler and the pressure gauge is typically a dial on the front of the boiler.
2. Use the filling key to open the valve on the filling loop. This will allow water to flow into the system and increase the pressure.
3. Keep an eye on the pressure gauge as you refill the system as the ideal pressure for a Baxi boiler is 1.5 bar. Once the pressure reaches this level close the valve on the filling loop.
4. If the pressure continues to drop or if you are unable to refill the system contact a professional for assistance.

It is important to regularly check and maintain the pressure of your Baxi boiler to ensure optimal performance and avoid potential issues. If you are unsure how to refill the system or if you are experiencing ongoing pressure problems it is best to contact a qualified engineer for help.