Ravenheat boiler error codes help you identify problems in your heating system. The most common ones include ignition failures, low water pressure, fan faults, and sensor issues. These codes provide useful guidance for UK homeowners and landlords.
At Eazy Heat we support many properties with dependable heating upgrades. Our new boiler installations deliver efficiency and comfort across the UK.
Ravenheat Boiler Error Codes: A Quick Overview
Ravenheat boiler error codes give clear signals about faults in your system. Here is a comprehensive table with the full list of common error codes and their meanings.
| Error Code | Meaning |
| E1 | Low water pressure |
| E2 | Ignition failure |
| E3 | Flame loss |
| E4 | Fan fault |
| E5 | Sensor fault |
| E6 | Overheat lockout |
| E7 | Gas valve fault |
| E8 | Circulation fault |
| E9 | Control board fault |
Ravenheat Boiler Error Codes: Causes & How to Fix
Ravenheat boiler error codes cover the typical challenges that can affect your heating and understanding them helps you take effective action. We detail each major code with practical advice below.
E1 Low Water Pressure
E1 on your Ravenheat boiler means the system pressure has dropped too low for safe running. This is one of the most common faults homeowners encounter.
Causes
Small leaks in radiators or pipe joints, air entering the system after bleeding radiators, a faulty pressure relief valve, or gradual pressure loss over months are the usual reasons. In older properties, corrosion in pipes can make leaks more likely.
How to Fix
- Locate the pressure gauge on the front of the boiler and note the current reading, which should ideally be between 1 and 1.5 bar when the system is cold.
- Find the filling loop, usually a flexible hose with two valves underneath the boiler, and open the valves slowly while watching the gauge rise gradually to avoid over pressurising.
- Close the filling loop valves once the gauge reaches the correct level and carefully check for any drips or wet spots around radiators, valves, and visible pipework that could indicate leaks.
- Bleed air from all radiators starting from the highest point in the house by using a radiator key and collecting any water that comes out in a cloth or container.
- Reset the boiler using the reset button, run the heating for a short time, and recheck the pressure gauge daily for the next week. If the pressure drops again, contact a Gas Safe engineer to locate and repair any hidden leaks in the system.
E2 Ignition Failure
E2 indicates the boiler has tried to light the flame but has not been able to do so successfully. This safety lockout prevents gas from flowing without a flame.
Causes
Temporary interruptions in the gas supply, dirty or worn ignition electrodes, low gas pressure, or a blocked condensate pipe are frequent causes. A faulty gas valve or issues with the control board can also prevent successful ignition.
How to Fix
- Check your gas meter to ensure the supply valve is fully open and test other gas appliances in the home to confirm there is gas coming through.
- If you have a prepayment meter, add credit and restart the supply if necessary.
- Press and hold the reset button on the boiler control panel for the recommended time to attempt a restart.
- A Gas Safe registered engineer will remove the burner cover, clean the ignition electrodes with fine abrasive material or a specialist cleaner, and check the spark gap is correct according to the manual.
- The engineer will measure gas inlet pressure, purge any air from the line if necessary, test the gas valve, and run several ignition cycles while monitoring flame stability before returning the boiler to normal use.
Persistent ravenheat boiler error codes can lead to costly repeated repairs. At Eazy Heat many customers discover that investing in a new boiler installation saves money in the long run through improved efficiency and fewer breakdowns.
E3 Flame Loss
E3 means the flame lit successfully but then went out during normal operation. The boiler locks out to stay safe.
Causes
Sudden drops in gas pressure, a partially blocked flue, a dirty flame sensor, or a frozen condensate pipe are common triggers. Faulty gas valves or control board issues can also cause the flame to become unstable.
How to Fix
- Verify the gas supply by checking the meter and testing other appliances.
- Locate the condensate pipe outside and pour warm water over any frozen sections to thaw it gently.
- A Gas Safe engineer will access the burner, clean the flame sensor with fine sandpaper or a specialist cleaner, and inspect for soot buildup.
- The engineer will test the gas valve for proper operation and adjust or replace it if it is sticking or faulty.
- After repairs, the engineer performs a full system test, checks flue gases with an analyser, and resets the boiler while monitoring for stable flame operation over several cycles.
E4 Fan Fault
E4 signals a problem with the fan that helps vent exhaust gases safely from the boiler.
Causes
Dust and debris blocking the fan, a worn fan motor, loose wiring connections, or a faulty air pressure switch are typical reasons. In some cases, a blocked flue restricts airflow and causes the fan to work harder or fail.
How to Fix
- Turn off the boiler at the mains isolator and ensure it is safe to work on.
- A Gas Safe engineer will inspect the fan and flue terminal for blockages and clean them thoroughly.
- The fan motor will be tested for correct speed and replaced if it is worn or seized.
- All wiring connections to the fan and air pressure switch will be checked and secured.
- The engineer will run the boiler through diagnostic modes and use an analyser to confirm correct airflow and combustion before resetting the system.
E5 Sensor Fault
E5 indicates that one of the temperature sensors is not reading correctly or has failed.
Causes
The sensor itself can degrade due to age or constant heat exposure, wiring connections can loosen from vibration, or damage from moisture or rodents can break the circuit. Poor water quality leading to scale around the sensor can also affect readings.
How to Fix
- Turn off the boiler at the mains isolator and allow it to cool.
- A Gas Safe engineer will locate the affected sensor, disconnect it, and test its resistance with a multimeter against the manufacturer’s specifications.
- If the sensor is out of range, it will be replaced with a genuine part and the sensor pocket will be cleaned of any debris or scale.
- All related wiring will be inspected for continuity and any loose or corroded connections will be repaired or replaced.
- The boiler will be restarted, reset, and run through a full diagnostic cycle while the engineer monitors the sensor readings and system temperatures for accuracy.
E6 Overheat Lockout
E6 means the boiler has detected temperatures that are too high and has locked out to prevent damage.
Causes
Restricted water flow due to closed valves or blockages, a failing circulating pump, or heavy sludge and scale in the heat exchanger can cause overheating. A faulty temperature sensor that gives incorrect high readings can also trigger this lockout.
How to Fix
- Check that all radiator valves and any isolation valves on the flow and return pipes are fully open.
- Bleed air from all radiators starting from the highest point in the house.
- A Gas Safe engineer will perform a system power flush or use chemicals to remove sludge and scale from pipes and the heat exchanger.
- The circulating pump will be tested and replaced if it is not delivering the correct flow rate.
- Temperature sensors will be tested and replaced if faulty, and the lockout will be reset.
Invest In a New Reliable Boiler for Peace Of Mind
Frequent ravenheat boiler error codes can become expensive. Many UK homeowners and landlords choose new boiler installations for long term reliability.
At Eazy Heat can help, we provide expert new boiler installations for homeowners and landlords throughout the UK. Contact us today for a free online boiler quote. Let us help you enjoy reliable heating without the hassle of frequent faults. Your comfort is our priority.
FAQs
How often should Ravenheat boilers be serviced?
Annual servicing by a Gas Safe engineer is recommended to prevent error codes and maintain efficiency.
Can I reset Ravenheat error codes myself?
Simple resets are okay for testing, but repeated faults require professional diagnosis.
Are Ravenheat boilers suitable for larger homes?
Yes, when correctly sized they provide reliable heating for bigger properties.
What should landlords do when error codes appear?
Arrange prompt professional repairs to maintain tenant comfort and compliance.
Do newer boilers have better error code handling?
Modern systems feature improved diagnostics and more reliable components for fewer issues.