Skip to content
24|7 Home Rescue
Boiler Breakdown & Home Emergency Cover
24|7 Home Rescue
  • New Boiler
  • Cover
    • Boiler Cover
    • Landlord Cover
    • Appliance Cover
    • Car Breakdown Cover
    • Home Emergency Cover
  • One-Off Services
    • Boiler Repair
    • Boiler Service
  • Go-Green
    • Go-Solar
    • Go-EV
  • Blogs
  • Contact Us
Log a Claim

phone-icon0345 3192 247

  • New Boiler
  • Cover
    • Boiler Cover
    • Landlord Cover
    • Appliance Cover
    • Home Emergency Cover
    • Car Breakdown Cover
  • One-Off Services
    • Boiler Repair
    • Boiler Service
  • Go-Green
    • Go-Solar
    • Go-EV
  • Blogs
  • Contact Us
  • Log a Claim
A text of Chirstmas Sale Offer Upto 60% Off boiler cover
View Our Policies

List of Ideal Boiler Fault Codes & Error Codes [Solutions]

You are here:
  1. Home
  2. Boiler Error Codes
  3. List of Ideal Boiler Fault…
Boiler Error CodesA white Ideal boiler with The text “List of Ideal Boiler Fault Codes” is located on the right side of the image

Updated on 8th December, 2023 by Martin Astley

When it comes to choosing a boiler in the UK, The Ideal boiler is one of the popular brands that customers choose. Providing central heating to your homes for over a hundred years Ideal Boiler has developed recognition as one of the most reliable boiler manufacturers. But that doesn’t mean ideal boilers aren’t prone to faults and errors; they are!

In this article, I will tell you the common Ideal boiler fault codes of different boilers, including system, regular, and combi boilers. Also, I will be telling you possible solutions for each fault.


 

F Fault Codes

  • F
  • FD
  • F1
  • F2
  • F3
  • F4
  • F5
  • F6
  • F7
  • F8
  • F9
  • FL
  • FU
  • FN

L Fault Codes

  • L1
  • L2
  • L3
  • L4
  • L9
  • LF
  • L5
  • L6
  • LC

C Fault Codes

  • C
  • C2
  • C0

D Fault Codes

  • D
  • 0

Other Faults Description

  • Overheat Lockout
  • Ignition Lockout
  • Too Many Restarts
  • Flame on Before Gas on
  • Water Pressure

 

Common Ideal boiler fault codes regardless of the type of system

Fault CodeSystem BehaviourPossible Solution
FThe boiler is operating in frost modeNo action is needed; this is normal behaviour.
FDNo water FlowThis issue indicates a problem with the installation of your boiler. Try repressurising your boiler; if this does not solve the issue, then contact your installer and let him rectify this issue.
F1Low water pressureCheck the boiler pressure and refill if necessary, make sure it is at 1.5 bars. Look for any signs of leaks and get them repaired.
F2Flame LossCheck the gas supply to the boiler. Ensure the boiler’s gas valve is open and the pilot light is on. If the issue persists, contact a qualified technician for assistance.
F3Fan FaultCheck if the fan is operating properly. Clean or replace the fan if it is not functioning correctly. If the problem persists, contact a certified Gas Safe Engineer to get the problem solved.
F4Flow thermistor faultTo solve the flow thermistor fault, you will have to contact a Gas Safe Engineer.
F5Return thermistor faultFault with return thermistor can occur due to operational issues or damaged connection; to solve this problem, you will have to contact a certified professional.
F6Outside sensor failureCheck the outside sensor and its wiring for any issues. Replace the outside sensor if it is faulty. Also, it is recommended to get your problem inspected by a Gas Safe Engineer as the problem might be related to the PCB.
F7Low mains voltageCheck the mains voltage and ensure it is within 190 VAC. Contact a certified professional if the voltage drops below 190 VAC.
F9Unconfigured printed circuit board (PCB)It is recommended that you invest in a new boiler or get a boiler on finance rather than repair the PCB as it can be quite expensive.
L1Flow temperature overheat or no water flowCheck the flow of water and ensure it’s not blocked. Inspect the flow temperature and adjust it by resetting your boiler. If the problem persists, contact a Gas Safe Engineer.
L2Ignition lockoutCheck the gas supply and the pilot light. Ensure the gas valve is open and there are no issues with the gas supply. If the problem persists, contact a Gas Safe Engineer.
L55 boiler resets in 15 minutesCheck for any issues causing frequent resets, such as low water pressure or a faulty sensor. Contact a qualified technician or certified engineer for further inspection.
L6False flame lockoutReset the boiler and check for any issues with the flame detection mechanism. Contact a qualified engineer if the issue persists.
CThe boiler has a call for central heating, but the appliance has reached the desired temperature set on the boiler OR The boiler is operating in hot water modeCheck the thermostat settings and ensure they are correctly set. If the boiler is operating in hot water mode, check the hot water settings.
C0Boiler chip card (BCC) activation faultReset the boiler and check if the fault persists. If the fault persists, contact a qualified technician for assistance.
C2Boiler chip card (BCC) faultContact a qualified technician to inspect and replace the chip card.
DThe boiler has a call for hot water, but the appliance has reached the desired temperature set on the boilerCheck the hot water temperature settings. If the issue persists, contact a qualified technician for assistance.
0The boiler is in standby mode awaiting either a central heating call or a hot water demandNo action is needed; this is normal behaviour.

 

Ideal Logic Max System / Logic Plus System Boiler Error Codes

The Logic+ and Logic Max boiler ranges are a perfect blend of efficiency and robust design, making them the optimal choice for your central heating system. These boilers, manufactured by Ideal, provide reliability and comfort, ensuring a seamless experience. However, errors and fault codes can occur due to various reasons.

Nevertheless, there is no need to worry, as I will now outline the common error codes and their possible solutions, enabling you to address any issues that may arise effectively.

Fault CodeSystem BehaviourPossible Solution
L1Flow temperature overheat lockout or no water flow lockoutCheck the flow of water and ensure it’s not blocked. Inspect the flow temperature and adjust it by resetting your boiler. If the problem persists, contact a Gas Safe Engineer.
L2Ignition lockoutCheck the gas supply and the pilot light. Ensure the gas valve is open and there are no issues with the gas supply. If the problem persists, contact a Gas Safe Engineer.
LC5 boiler resets in 15 minutesTurn the electrical supply to the boiler off and on. If the boiler fails to operate, contact your boiler manufacturer or provider.
L6False flame lockoutReset the boiler and check for any issues with the flame detection mechanism. Contact a qualified engineer if the issue persists.
F1Low water pressureCheck the boiler pressure and refill, if necessary, make sure it is at 1.5 bars. Look for any signs of leaks and get them repaired.
F2, FN or LNFlame lossTo make sure you have a gas supply at your property, check if other gas appliances in the house are working properly. If they’re not working or you can’t test them, ensure the gas supply is turned on at the meter or check if your pre-payment meter has enough credit. If your boiler stops working, contact the manufacturer or provider for help as soon as possible.
F3Fan FaultCheck if the fan is operating properly. Clean or replace the fan if it is not functioning correctly. If the problem persists, contact a certified Gas Safe Engineer to get the problem solved.
L4 or F4Control / no flow thermistor faultRestart your boiler. If the boiler fails to operate after the restart, contact a Gas Safe Engineer or the manufacturer if the boiler is under warranty.
L5 or F5Return thermistor faultTry restarting your boiler. If it fails to operate, either contact a Gas Safe Engineer or the manufacturer if your boiler is under the warranty period.
F6Outside sensor faultTry restarting your boiler. If it fails to operate, either contact a Gas Safe Engineer or the manufacturer if your boiler is under the warranty period.
F7Low mains voltageContact the electricity provider.
F9, L9, F8 or L8Printed circuit board (PCB) unconfigured or faultThis is an internal fault for which you will have to contact a Gas Safe professional.
FUDiff greater than 50c check isolation valves are openIf the problem persists and the boiler is not operating, contact your manufacturer if the boiler is under the warranty period. If not, contact a Gas Safe Engineer.

 

Ideal Logic Max Plus Combi Boiler Error Codes

Ideal’s Logic Max Combi boilers are just like the Logic Plus and Logic Plus Max; the Ideal Logic Max Combi Boiler provides the same features and benefits with an easy-to-reach pressure gauge on the front panel and frost protection to eliminate the risk of cold weather damage during the winter.

Their error codes will be displayed on your screen with time, but there is no need to worry; below, I will mention standard boiler error or fault codes and possible solutions.

ideal boiler L fault codes

Fault DescriptionSystem BehaviourPossible Solution
Overheat lockoutThe boiler is becoming overheated due to excessive pressure.Bleed radiators, refill system to 1.2 bar. Check that all radiator and boiler valves are open and reset the boiler. If the fault continues, book an engineer.
Ignition lockoutA safety measure that is implemented by the boiler due to blockages caused by sludge buildup and a frozen condensate pipe.Check the gas supply and the pilot light. Ensure the gas valve is open and there are no issues with the gas supply. If the problem persists, contact a Gas Safe Engineer.
Too many restarts5 starts within 15 minutes.Check for any issues causing frequent resets, such as low water pressure or a faulty sensor. Contact a qualified technician or certified engineer for further inspection.
Flame on before gas onFalse flame lockout.Reset the boiler and check for any issues with the flame detection mechanism. Contact a qualified engineer if the issue persists.
Water pressureLow water pressure causes your boiler to cease operation and impair its performance.Reset the boiler and check for any issues with the flame detection mechanism. Contact a qualified engineer if the issue persists.

 

Ideal Vogue Boiler Error Codes

Thanks to their high-quality components, the Ideal Vogue Gen2 and Vogue Max system boilers offer exceptional style and performance. However, it is not uncommon for specific fault codes to appear on the system due to various reasons. In the following section, I will outline some of the most common boiler error codes and provide potential solutions for each.

Fault CodeSystem BehaviourPossible Solution
F1Low water pressureCheck the system water pressure is between 1 and 1.5 bar on the system pressure gauge. To re-pressurise the system, see section 3 of the user manual provided above or follow the WarmZilla guide to repressurise your boiler.
F2 OR FLFlame lossTo make sure you have a gas supply at your property, check if other gas appliances in the house are working properly. If they’re not working or you can’t test them, ensure the gas supply is turned on at the meter or check if your pre-payment meter has enough credit. If your boiler stops working, contact the manufacturer or provider for help as soon as possible.
F3Fan faultCheck if the fan is operating properly. Clean or replace the fan if it is not functioning correctly. If the problem persists, contact a certified Gas Safe Engineer to get the problem solved.
F4 or L4Flow thermistor faultRestart your boiler. If the boiler fails to operate after the restart, contact a Gas Safe Engineer or the manufacturer if the boiler is under warranty.
F5 or L5Return thermistor faultTry restarting your boiler. If it fails to operate, contact a Gas Safe Engineer or the manufacturer if your boiler is under the warranty period.
F6Outside sensor failureTry restarting your boiler. If it fails to operate, contact a Gas Safe Engineer or the manufacturer if your boiler is under the warranty period.
F7Low mains voltageContact the electricity provider.
F9 or L9Unconfigured PCBThis is an internal fault for which you will have to contact a Gas Safe professional.
L1Flow temperature overheat or no water flowCheck the flow of water and ensure it’s not blocked. Inspect the flow temperature and adjust it by resetting your boiler. If the problem persists, contact a Gas Safe Engineer.
L2Ignition lockoutCheck the gas supply and the pilot light. Ensure the gas valve is open and there are no issues with the gas supply. If the problem persists, contact a Gas Safe Engineer.
L6False flame lockoutReset the boiler and check for any issues with the flame detection mechanism. Contact a qualified engineer if the issue persists.
LC5 boiler resets in 15 minutesTurn the electrical supply to the boiler off and on. If the boiler fails to operate, contact your boiler manufacturer or provider.
FUFlow/return differential – 50°CIf the problem persists and the boiler is not operating, contact your manufacturer if the boiler is under the warranty period. If not, contact a Gas Safe Engineer.

Conclusion

If you observe any of these error codes flashing on the display of your Ideal boiler, it indicates that your boiler needs assistance. Depending on the specific error code, you are now equipped with the knowledge to address the issue. In the event of a severe fault, it may be necessary to seek the expertise of a professional engineer.

However, there are instances where the boiler may be beyond repair, and replacement becomes necessary. But there is no need to panic, and if your problem still needs to be solved even after reading the above fault code guide, then call us at 0345 3192 247 and one of our representatives will assist you and try to solve your problem on-call. If you are unsatisfied, we will book your appointment with an engineer.

Get a new boiler
today!

Get your new boiler and save your heating bill yearly with new energy efficient boiler.

Get a Quote Now

TrustPilot Widget

 

Frequently Asked Questions (FAQs)

Why is my Boiler Flashing E1?

This is a lesser-known boiler error code but if displayed, it means the pressure on your boiler has dropped and a water leak is stopping your system from functioning properly. In this case, you will have to repressurise your system to fix this problem.

Why is my Boiler Flashing F?

The Ideal boiler error code F is a common fault, displayed when your boiler has low water pressure. This is luckily an easy problem to fix yourself.

What do the numbers on my Boiler mean?

The numbers on the dial of the boiler are usually marked from Minimum to Maximum. This displays the water temperature that will be pumped from the boiler. If it is set higher, the system will heat your home faster and more effectively.

What does L2 Fault mean on an Ideal Boiler?

The Ideal boiler L2 fault means there is flame loss or some issue that can lead to a lockout. This can happen during operation due to low gas pressure, faulty gas valve, or flue sensor.

How do I restart my Ideal Boiler?

When you get directed to restart your boiler due to the listed fault codes, press the “RESTART” button (F). Your boiler will then repeat its ignition sequence. If the boiler still does not start properly, consult a Gas Safe Registered Engineer.

What does Status “C” mean on a Boiler?

The Ideal boiler status “C” means your boiler has a central heating demand. This issue can be resolved by pressing reset on the boiler – you will not have to turn the boiler off at the wall for this.


Share:
Category: Boiler Error CodesBy Martin AstleyJuly 8, 2021

Post navigation

PreviousPrevious post:A Simple Step-by-Step Guide To Fixing An Overflow Pipe LeakingNextNext post:The UK Gas Boiler Ban: What You Need To Know in 2022

Related

Vokèra Boiler Fault/Error Codes
Vokèra Boiler Fault Codes & Error Codes With [Solutions]
July 24, 2023
List of Ariston Boiler Error Codes and Fault Codes
List Of Ariston Boiler Error Codes and Problems: A Complete Guide
July 14, 2023
List of Viessmann Boiler Error Codes
Viessmann Boiler Fault Codes: A Comprehensive List and Common Issues
July 12, 2023
Potterton Boiler Problems and List of Fault Codes
List of Potterton Boiler Fault Codes, Problems, and Solutions
July 10, 2023
Vaillant-boiler-Fault-codes
Vaillant boiler fault codes & error codes. How to fix them?
April 8, 2022
Baxi-boiler-error-codes
Baxi boiler error codes & fault codes. What do you need to do?
March 23, 2022
How to Guides & Blogs
  • New Boiler Cost in the UK
    New Boiler Cost 2023: Understand the Price Dynamics!
    December 5, 2023
  • Cost of repairing a boiler
    What is the Cost of Repairing a Boiler?
    November 24, 2023
  • Radiators getting cold at the bottom
    Why are my radiators getting cold at the bottom
    November 3, 2023
  • Boiler Pump Overrun
    What is a Boiler Pump Overrun Function? All You Need to Know!
    October 30, 2023
  • Common Boiler Fan Faults reasons and solutions
    Common Boiler Fan Faults Reasons and Solutions
    October 19, 2023

Join Us Now

To get exclusive updates and
offers, please subscribe now



247homerescue

New Boiler – Home Cover – Boiler Repair – Boiler Service
  • Parkhill Business Centre, Padiham Road,
    Burnley, BB12 6TG
  • 0345 3192 247
  • [email protected]

  • twitter-icon



Company
  • About Us
  • Reviews
  • Careers
  • Privacy Policy
  • Cookies Policy
  • Terms of Use
  • Affiliate Program
Customer Support
  • Contact Us
  • Complaints Procedure
Boiler Repair by Location
  • Edinburgh
  • Glasgow
  • London
Product & Services
  • Boiler Cover
  • Landlord Cover
  • Appliance Cover
  • Car Breakdown Cover
  • Home Emergency Cover
  • Boiler Repair

24|7 Home Rescue is a trading name of 24|7 Home Assist Limited registered in England & Wales. Company No: 09438900 and VAT number: 223099322.24|7 Home Assist Limited is authorised and regulated by the Financial Conduct Authority FRN: 935754.The insurance policy is underwritten by Evolution Insurance Company Limited which is registered in Gibraltar No. 88737 with a registered office at 5/5 Crutchett's Ramp, Gibraltar, GX11 1AA. Evolution Insurance Company Limited is authorised and regulated by the Gibraltar Financial Services Commission. Authorised by the Prudential Regulation Authority.

 

Registered Office:
Parkhill Business Centre, Padiham Road, Burnley, BB12 6TG.
 
Copyright 2023 ⓒ - All Rights Reserved - 24|7 Home Rescue™️