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Last updated: 19th June, 2024


Ideal Boiler Status 00 - How to Fix

Ideal Boiler Status 00 - How to Fix

Key takeaways

  • Status 0 means the Ideal boiler is in standby mode.
  • Check thermostat and timer settings to ensure proper demand.
  • Contact a Gas Safe registered engineer if the issue persists.

Ideal boilers provide a variety of fault codes to help diagnose issues. Understanding these codes can help users determine whether they can fix the issue themselves or need to call a professional.

Facing an Ideal boiler displaying a status of "0" can be frustrating, but understanding what it means can ease the troubleshooting process. A status 0 indicates that the boiler is on standby mode and not responding to any demand for hot water or central heating. This usually happens when the boiler isn't receiving a signal to turn on. Knowing how to address this issue can save time and avoid unnecessary stress.

The first step in resolving the "status 0" issue involves checking the thermostat and timer settings. Ensure they are correctly set to demand heat or hot water. If no corrections are needed there, move on to inspecting other potential causes such as a closed valve or air trapped in the system. These checks can help pinpoint why there's no demand signal reaching the boiler.

In some cases, the problem might persist despite these troubleshooting efforts. This is where professional help becomes crucial. If you are unable to get the boiler working, it is recommended to contact a Gas Safe registered engineer. They can provide a thorough inspection and fix any issues that require expert intervention.

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Ideal Boiler Status 0 How to Fix

Ideal Boiler Status 0 typically means the boiler is on standby. It isn’t receiving any demand for hot water or central heating.

Steps to Fix:

  1. Check Thermostat Setting:Ensure the thermostat is set to a temperature that triggers the boiler.

  2. Verify Timer Settings:Make sure the timer is correctly set for heating and hot water.

  3. Manual Activation:Try switching the boiler on manually if the automatic systems aren’t working.

  4. Reset the Boiler:Sometimes, a simple reset can resolve temporary issues. Follow the manufacturer's instructions.

  5. Check for Fault Codes:Look at the boiler display for any error or fault codes. Status 0 is not an error, but other codes might be affecting boiler performance.

  6. Inspect Water Pressure:Ensure the water pressure is at the recommended level, usually between 1.0 and 1.5 bar.

  7. Consult the User Manual:Refer to the manual for specific guidance on addressing issues related to Status 0.

  8. Call a Professional:If none of these steps work, contact a Gas Safe registered engineer.

These steps should help in troubleshooting and potentially fixing the issue with the Ideal Boiler showing Status 0.

Common Ideal Boiler Fault Codes

Ideal boilers provide a variety of fault codes to help diagnose issues. Understanding these codes can help users determine whether they can fix the issue themselves or need to call a professional.

Fault Code F1

Fault Code F1 indicates low water pressure in the boiler system. This can happen if there is a leak in the system or if the pressure has dropped below the required level. The boiler will not operate until this issue is resolved.

To fix this, users can:

  1. Check the pressure gauge on the boiler.

  2. Re-pressurise the boiler using the filling loop.

  3. Ensure all radiators are bled to remove trapped air.

If the problem persists, a Gas Safe registered engineer should be contacted.

Error Code L4

Error Code L4 usually points to an ignition failure. This means the boiler is not able to ignite the burner. Common causes include a faulty ignition lead or electrode, a gas supply issue, or a problem with the flame detection system.

Steps to address Error Code L4:

  1. Reset the boiler according to the user manual.

  2. Inspect the gas supply and ensure it is switched on.

  3. Check the ignition components for any visible damage.

For persistent issues, an engineer's assistance will be necessary.

Status Error C2

Status Error C2 often relates to a problem with the boiler's combustion. This error can arise due to issues such as a blocked flue, improper air supply, or a malfunctioning fan. It is crucial to tackle these problems promptly to avoid further damage and ensure safe operation.

To fix Status Error C2:

  1. Make sure the flue is clear of obstructions.

  2. Inspect the fan and air intake for any blockages or damage.

  3. Verify that ventilation around the boiler is adequate.

Always call a professional for a thorough check if the error is not resolved.

Status Fault F9

Status Fault F9 is associated with flame loss during operation. This could be due to low gas pressure, problems with the flame detection system, or an issue with the boiler's ignition. Flame loss can prevent the boiler from heating effectively.

Actions to remedy Status Fault F9:

  1. Reset the boiler as per the manual instructions.

  2. Check the gas supply and pressure.

  3. Examine the flame sensor for dirt or damage.

If unable to fix the error, professional help is recommended to ensure safety and efficiency.

Diagnosing Your Ideal Boiler Issue

When your Ideal boiler displays "Status 0", it indicates standby mode with no current demand for hot water or heating. Diagnosing why your boiler isn't responding involves checking various factors like temperature, water pressure, flame ignition, and water flow. Understanding these common issues can help pinpoint the exact problem.

Temperature Irregularities

Temperature problems in your Ideal boiler can often be traced back to faulty thermostats or sensors. If the thermostat isn't working correctly, it may not send the right signal to the boiler.

Checking the thermostat settings is crucial. Ensure they are set to the desired temperature. Inspect sensors around the boiler for damage or disconnection. Replacing faulty sensors or recalibrating the thermostat can resolve many temperature issues.

Water Pressure Problems

Water pressure in the heating system should be within the recommended range, usually between 1 and 1.5 bar.

A drop in pressure often points to leaks or bleeding radiators. Check the pressure gauge on the boiler; if it's below 1 bar, the system needs to be re-pressurised. Identify any visible leaks and address them promptly. Use the filling loop to adjust the pressure back to the correct level.

Flame or Ignition Troubles

Ignition issues can prevent the boiler from starting, shown by a lack of flame in the pilot light or error codes.

First, inspect the gas supply to ensure it is turned on and there are no obstructions. The ignition electrode might be worn out or dirty, requiring cleaning or replacement. If the flame sensor is faulty, it may fail to detect the pilot light, causing shutdowns. Contacting a Gas Safe registered engineer is advisable if these steps do not solve the problem.

Water Flow Complications

Water flow issues may stem from blockages in the system or a faulty pump. Check all radiators and valves for blockages.

The condensate pipe can freeze or become clogged, affecting water flow. Removing any obstructions and ensuring the pipe is clear can fix the issue. If the pump isn't working, it may need cleaning or replacement to restore proper circulation.

Ensuring regular maintenance and addressing each problem systematically can help keep your Ideal boiler running smoothly.

Fixing Ideal Boiler Faults

Ideal boilers can experience common issues such as needing a reset, dealing with low water pressure, or encountering flame and ignition faults.

Resetting Your Ideal Boiler

Sometimes, Ideal boilers need a reset to clear minor issues. To do this, locate the reset button, usually marked with a flame icon or the word "reset." Hold it for 3-5 seconds or as specified by the manufacturer’s guidelines.

After resetting, the boiler should restart and clear any minor faults. If the boiler shows a fault code like F1, it often points to low water pressure. In such cases, resetting might not be enough and other steps will be necessary.

If the boiler doesn’t reset or the fault persists, it’s essential to contact a professional engineer for assistance.

Addressing Water Pressure Issues

Low water pressure is a frequent problem in Ideal boilers, often indicated by the F1 fault code. Check the pressure gauge on your boiler. It should read between 1.0 and 1.5 bar.

If the pressure is too low, you will need to re-pressurize the system. Locate the filling loop, usually found under the boiler. Follow these steps:

  1. Turn off the boiler.

  2. Attach the filling loop hose to the valves.

  3. Open the valves slowly to let water into the system.

  4. Watch the pressure gauge and close the valves once it reaches the correct level.

  5. Remove the hose and turn the boiler back on.

If re-pressurizing doesn’t fix the issue or the pressure drops again, it might indicate a leak or another underlying problem.

Resolving Flame and Ignition Faults

Flame and ignition faults, indicated by fault codes like F2 or F3, are issues where the boiler fails to ignite the flame. These can occur due to a blocked flue, faulty gas supply, or issues with the ignition electrode.

  1. Check for blockages: Make sure the flue is clear from any obstructions.

  2. Inspect the gas supply: Ensure the gas inlet is open and that there’s no interruption in the supply.

  3. Examine the ignition electrode: Look for any signs of wear or dirt on the electrode.

If none of these steps resolve the issue, it’s crucial to call a Gas Safe registered engineer, as this could mean there’s a more serious fault with the boiler’s components.

By following these steps, many common Ideal boiler faults can be addressed swiftly and effectively.

When to Call a Gas Safe Registered Engineer

If you see Status 0 on your Ideal boiler and can't get hot water or central heating, it might be time to call a Gas Safe registered engineer.

Common Issues that might need a professional include:

  • Persistent error codes like F2 (flame failure) or L0/L1 (sensor or PCB fault)

  • Inability to reset the boiler manually

  • Repeated flame or ignition issues

Safety Concerns should always be a priority:

  • Gas leaks or the smell of gas

  • Signs of carbon monoxide leaks, such as yellow flames or sooty marks

  • Faults in key components like the gas valve or fan speed

Contact a Gas Safe registered engineer if:

  1. You've tried regular troubleshooting steps but the boiler remains unresponsive.

  2. You notice unusual noises coming from the boiler.

  3. Water pressure issues that you can't resolve on your own.

Benefits of a Professional include:

Remember, only a professional can legally and safely handle gas appliances. Make sure they're Gas Safe registered by checking their ID card.

Quick Tip: Keep the contact info for a local Gas Safe registered engineer handy for any emergencies or routine checks.

Preventative Maintenance for Ideal Boilers

Proper maintenance of Ideal Boilers is crucial to ensure efficiency and longevity. Key areas include regular servicing, maintaining correct water pressure, and keeping the condensate pipe clear.

Regular Ideal Boiler Service

Scheduling annual services for your Ideal Boiler is vital. A qualified Gas Safe registered engineer should perform this service. They will inspect the boiler for issues such as wear on parts, checking the gas pressure, and ensuring the thermistor and other components are functioning correctly.

Keeping up with regular services can also help you keep your warranty valid. It's recommended to schedule services ahead of winter to ensure the boiler is in optimal condition before the colder months arrive.

Ensuring Proper Water Pressure

Proper water pressure is necessary for the boiler to function efficiently. Ideal Boilers typically have a pressure gauge on the front.

The ideal pressure range is usually between 1.0 and 1.5 bar when cold. If the pressure is too low, it may cause the boiler to shut down or not heat water correctly. Conversely, too high pressure can cause leaks or other damage.

Homeowners can top up the boiler pressure themselves using the filling loop.

Keeping the Condensate Pipe Clear

The condensate pipe carries condensation away from the boiler, and it can sometimes get blocked, especially in freezing weather. A blocked condensate pipe can cause the boiler to shut down.

To prevent blockages, ensure the pipe is well insulated and check it regularly for any signs of blockage or damage. If there's a blockage, it can be thawed safely using warm water.

Regular maintenance and checks of the condensate pipe can prevent unexpected shutdowns and keep the boiler running smoothly.

Choosing a Replacement for Your Ideal Boiler

When selecting a replacement for your Ideal boiler, it is crucial to consider the type, efficiency, and features of the new unit. This guide will help you explore options and make an informed decision.

Considering a New Ideal Logic Boiler

An Ideal Logic boiler is a popular choice for many households. These boilers are known for their reliability and ease of use. They come in various sizes to fit different needs, whether it is for a small flat or a larger home.

Ideal Logic boilers also offer modern features such as digital displays and smart thermostats. These features can help manage heating and hot water more efficiently. Additionally, the compact design of these boilers makes them easy to install in tight spaces.

Exploring Combi Boiler Options

A combi boiler is an all-in-one solution that provides both hot water and central heating. These boilers are space-saving because they do not require a separate water tank. Combi boilers are an excellent option for homes where space is limited.

The installation process for a combi boiler is usually straightforward and cost-effective. Modern combi boilers come with advanced features like programmable timers and internet connectivity, which can enhance the user experience. These boilers also adapt well to varying boiler pressures, ensuring consistent performance.

Understanding Boiler Efficiency

Efficiency is a key factor when choosing a new boiler. High-efficiency boilers convert more fuel into heat, reducing energy bills and environmental impact. Ideal Logic boilers and many combi boilers are designed to be highly efficient, often achieving A-rated energy performance.

When considering efficiency, look at the Seasonal Efficiency of Domestic Boilers in the UK (SEDBUK) rating. Boilers with higher ratings will save more money over time. Inefficient boilers can lead to higher costs and more frequent breakdowns, so investing in an efficient model is wise.

By focusing on boiler type, features, and efficiency, homeowners can choose the best replacement that meets their needs and ensures long-term satisfaction.

Cost Considerations and Getting Quotes

When thinking about the cost of fixing an Ideal boiler with a status "0" fault, several factors play a role.

Obtaining Quotes

It's important to get multiple quotes before deciding on a service. Contact at least three Gas Safe registered engineers to compare prices. This ensures you're getting a fair deal without overpaying.

Energy Efficiency

A boiler that constantly shows a status "0" might be inefficient. Upgrading to a more energy-efficient model can save money in the long run. According to the Energy Saving Trust, installing an energy-efficient boiler can save up to £315 annually on energy bills.

Potential Costs

  • Service Call Fee: Engineers typically charge a call-out fee, which can range from £60 to £100.

  • Replacement Parts: If parts of the boiler need replacing, costs can vary:

    • Thermostat: £30-£50

    • Pump: £100-£300

Replacement vs. Repair

Sometimes, replacing the boiler might be more cost-effective than continuous repairs. A new Ideal boiler might cost between £700 and £1500, excluding installation.

Energy Bills Impact

Replacing an old, inefficient boiler with a new model can significantly lower energy bills. Energy-efficient boilers reduce the overall cost of heating by consuming less fuel.

Use a Trusted Source

Always use trusted sources, like the Energy Saving Trust, for advice on energy efficiency and potential savings. This helps ensure you're making an informed decision when considering repair or replacement.


By obtaining multiple quotes and considering long-term savings, homeowners can make more informed decisions regarding their Ideal boiler's status "0" issues. It’s essential to balance the immediate repair costs with the potential savings from improved efficiency.

Troubleshooting Additional Ideal Boiler Errors

There are several common errors and issues you may encounter with your Ideal boiler, such as fault codes, standby problems, and lack of hot water. This guide will help you troubleshoot these issues effectively.

Error Code F Faults

Error Code F typically represents a fault that requires immediate attention. Common F codes include F1, F2, and F3:

  • F1: Low water pressure. The boiler needs to be re-pressurised. Check the pressure gauge and use the filling loop to restore it to 1-1.5 bar.

  • F2: Flame loss. Ensure the gas supply is on and reset the boiler.

  • F3: Fan fault. The fan may need to be replaced or repaired.

For persistent errors, contacting a Gas Safe registered engineer is highly recommended.

Code 00 and Standby Issues

Status 00 indicates the boiler is in standby mode, meaning there is no demand for heating or hot water. Common reasons include:

  • Thermostat Settings: Ensure your thermostat is set to a temperature that requires heating.

  • Timer Issues: Check if your timer is correctly set to trigger the heating cycle.

  • Manual Override: You can manually turn on the heating or hot water if automatic controls fail.

If Status 00 persists despite these checks, it may indicate a deeper issue requiring professional assistance.

Lack of Hot Water and Radiator Faults

When your Ideal boiler fails to heat water or radiators:

  • No Hot Water: This could be due to a fault in the diverter valve or an issue with the thermostat. Resetting the boiler might help, but persistent issues should be addressed by a professional.

  • Radiator Problems: Cold spots on radiators often indicate trapped air. Bleeding the radiators can resolve this.

  • Pressure Issues: Low pressure can affect heating efficiency. Check and adjust the pressure to the recommended level.

Addressing these issues promptly ensures efficient boiler operation and a comfortable home environment.


At iHeat all of our subcontracted engineers are Gas Safe registered and can service your boiler swiftly and safely. Prices of an expert boiler service with iHeat start from £99.These figures might fluctuate regionally and can also depend on the specific type of boiler you own, such as a combi, gas, or oil boiler. 

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iHeat New Boiler Cost

Boilers can be a daunting purchase for many people as they’re an appliance with a lot of responsibility, providing heat for you and your family is something you want to get right. Boilers aren’t exactly a quickly disposable item either, potentially lasting you a decade.

Effectively, new boiler cost can be split into two segments: the first is the actual boiler itself (unit price), and the second is the cost of the boiler being installed (set up) in your property by an expert engineer. 

Here at iHeat, we remove all of this undue stress and make the decision making process of upgrading to a new central heating system, as easy as possible.

New boiler costs can vary depending on a number of factors including their brand, model, fuel, output, warranty, labour and boiler installation type. Typically a new boiler will cost between £1,845 and £3,500, below is a list of average boiler installations offered by iHeat (guide only).

Installation Type

Price (inc VAT)

Combi to combi swap


Get a quote

System to combi conversion


Get a quote

New boiler install


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Back boiler to a combi


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System to system


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Frequently Asked Questions

Why is my Ideal boiler showing 00?

The '00' status on an Ideal boiler indicates that the unit is in standby mode. It means the boiler is not receiving a demand for hot water or heating. This is normal if the thermostat is set low or if there's no hot water requirement.

What does 0.0 bar mean on boiler?

A reading of 0.0 bar on your boiler indicates that there is no pressure in the system. This could mean the boiler is off, or there might be a leak. It's important to address this to avoid any damage to your heating system.

How do I clear the error code on my boiler?

To clear an error code, start by consulting the user manual for specific instructions. Generally, you can try resetting the boiler using the reset button. If the issue persists, it may require professional intervention.

Can I reset my boiler myself?

Yes, you can reset your boiler yourself. Most Ideal boilers have a reset button on the control panel. Press and hold it for a few seconds. If the boiler fails to reset, a more serious issue may need to be addressed by an engineer.

Why is my Ideal system boiler not firing up?

There are several reasons why an Ideal system boiler might not fire up. Common causes include low pressure, a faulty thermostat, or issues with the ignition system. Checking these components can often resolve the problem.

What are the common faults with Ideal boilers?

Ideal boilers can experience several common faults. These include low water pressure, ignition failure, and thermostat issues. Keep an eye on error codes and address them promptly to ensure efficient operation.

How do I fix my boiler not firing up?

If your boiler isn’t firing up, start by checking the pressure gauge and ensuring it's within the recommended range. Inspect the thermostat settings and the gas supply. If these checks don't resolve the issue, consult a professional engineer.

Stephen Day profile photo
Article by
Stephen Day | Co-founder
Gas Safe registered and FGAS certified engineer with over 20 years experience in the heating and cooling industry.