Disclaimer
The Potterton E118 error code is an essential indicator that the system pressure in your boiler is too low. Recognizing and addressing Potterton boiler error codes, particularly the E118 fault, is crucial for maintaining your heating system’s efficiency and safety. Low system pressure can prevent the boiler from functioning correctly, leaving your home without heating or hot water, which makes it essential to address this issue promptly.
Understanding Potterton E118 Error
The Potterton E118 error indicates that the pressure within your boiler’s system has dropped below the required level for proper operation. This issue can arise from various causes, such as leaks in the system, bleeding radiators without adequately topping up the pressure, or a faulty pressure relief valve. Understanding these causes is essential for effective troubleshooting and ensuring the boiler operates efficiently and safely.
Causes of E118 Error Code
The E118 error code appears primarily when the system pressure falls below an acceptable level, typically due to:
Leaks in the system: Water may escape from joints, valves, or radiators, leading to a drop in pressure.
Bleeding radiators: Removing air from radiators can reduce system pressure if the system is not adequately refilled.
Faulty pressure relief valve: If this valve malfunctions, it can release too much water, lowering the system pressure.
Regular checks can help catch these issues early. Identifying the cause allows for straightforward repairs, ensuring the boiler operates efficiently.
Interpreting the Pressure Gauge
The pressure gauge is a vital tool for monitoring your boiler’s performance. It typically has a green zone that indicates the safe operating pressure:
Normal pressure: A reading between 1.0 and 1.5 bar is ideal for most Potterton boilers. This range ensures the boiler functions effectively.
Low pressure: A reading below 1.0 bar suggests low water pressure, which can trigger the E118 error code.
High pressure: If the gauge reads above 2.5 bar, the system may be over-pressurized, leading to potential damage.
Regularly checking the pressure gauge helps identify issues before they escalate, ensuring the boiler remains in safe operating condition.
Diagnostic Procedures for E118 Error
When dealing with error code 118, accurate diagnostics are essential. Key areas to focus on include water pressure levels and potential faults in wiring and sensors.
Water Pressure Test
Begin by checking the system’s water pressure using the pressure gauge:
Locate the Pressure Gauge: Usually found on the front of the boiler.
Read the Gauge: If the pressure is below the recommended level (typically 1.0 bar), the E118 error may be triggered.
Repressurise the System: Add water using the filling loop until the pressure gauge indicates the correct level, usually between 1.0 and 1.5 bar.
After adjusting the pressure, monitor the gauge to ensure the pressure remains stable. If it drops again, there may be a leak or another issue within the system.
Wiring Fault and Sensor Checks
Inspecting the wiring and sensors is crucial. A possible wiring fault can prevent the pressure sensor from functioning correctly. Look for signs of damage, such as frayed wires or loose connections.
Next, examine the pressure sensor to ensure it is securely connected and free from debris. If the sensor appears damaged, it may need to be replaced. Checking for fault codes displayed by the system can provide further insight into the issue.
Troubleshooting and Repair Strategies
Addressing the Potterton E118 error involves several key steps, each targeting specific issues that can cause low system pressure.
Re-pressurising the Boiler System
One common solution for the E118 error is re-pressurising the boiler system:
Check the Pressure Gauge: Confirm that the pressure is below 1 bar.
Locate the Filling Loop: This is usually a silver flexible pipe with valves on both ends.
Open the Valves: Slowly open both valves to allow water into the system. Monitor the pressure gauge as it rises.
Close the Valves: Once the gauge reaches the recommended level (between 1.0 and 1.5 bar), close both valves completely.
Re-pressurising the system should restore proper pressure and resolve the error.
Resolving Gas Supply Issues
Gas supply issues can also trigger the E118 error:
Check the Gas Valve: Ensure it is open and that gas is flowing to the boiler.
Inspect for Leaks: Look for any gas leaks around the boiler or pipes. A Gas Safe registered engineer should be called if a leak is suspected.
If these steps do not resolve the problem, consult a professional for a thorough inspection of the gas supply system.
Addressing Air Circulation and Flame Failure
Proper air circulation is crucial for boiler performance. If air cannot circulate correctly, it may lead to flame failure:
Check for Blockages: Ensure there are no obstructions in the venting system.
Clean the Boiler: Dust and debris can affect flame stability, so regular cleaning is essential.
Reset the Boiler: Sometimes, resetting the boiler can clear temporary faults. This can be done by turning the boiler off and on again.
If the issue persists, professional help may be required to diagnose deeper problems with the boiler.
Maintenance and Prevention
Regular maintenance is essential to keep the Potterton boiler functioning correctly and prevent issues like low system pressure.
Regular Servicing by a Gas Safe Registered Engineer
Annual servicing by a Gas Safe registered engineer is crucial. This service includes checking for potential safety errors and ensuring the boiler operates efficiently. The engineer will inspect and clean components, preventing issues such as a probable pump jammed or wiring faults.
Regular servicing helps maintain warranties and ensures the boiler operates safely.
Monitoring Boiler Pressure and Water Circulation
Monitoring boiler pressure is essential for maintaining performance. The ideal pressure for most Potterton boilers is between 1.0 and 1.5 bar. If the pressure is too low, use the filling loop to add water.
Additionally, check for proper water circulation. Low pressure can lead to inefficiencies and trigger errors. Regular visual checks can help spot issues before they escalate.
Understanding Your Potterton Boiler
Potterton boilers are known for their reliability and ease of use. Models like the Potterton Assure Combi and Promax Combi offer various features that ensure efficient heating.
Features of Potterton Boilers
Potterton boilers come with key features that enhance their functionality:
Compact Design: Fits easily into small spaces.
High Efficiency: Reduces fuel costs and environmental impact.
User-Friendly Controls: Simple interface for setting temperatures.
These boilers also include safety measures like pressure sensors to prevent faults such as the Heating Flow Switch Error. Consistent maintenance ensures these features work effectively.
Operating the Room Controller
Operating the room controller is essential for managing home heating effectively. The room controller connects with the boiler and allows users to set temperatures easily.
Temperature Settings: Adjusting the temperature for different rooms helps conserve energy.
Programming Schedule: Allows scheduling for heating times, offering convenience.
Error Indicators: Displays messages for issues like DHW NTC Sensor Faults or low system pressure.
Understanding these settings ensures the boiler operates smoothly and efficiently.
Frequently Asked Questions
How can I resolve the E118 error code on a Potterton boiler?
To fix the E118 error, check the system pressure gauge. If the pressure is low, repressurise the boiler using the filling loop. Follow the manufacturer’s instructions for your specific model.
What steps should be taken to repressurise a boiler showing an E118 error?
Locate the filling loop, open the valves to allow water into the system until the pressure gauge reaches the correct level (typically between 1.0 and 1.5 bar). Close the valves once the pressure is at the recommended level.
What does error code 118 signify on a Potterton boiler?
Error code 118 indicates that the system pressure is too low. This needs to be corrected for the boiler to function properly.
How can I address a system pressure that's too low, resulting in an E118 error?
Regularly check the pressure gauge. If the pressure is too low, use the filling loop to add water. If pressure issues persist, a professional inspection may be required.
What could cause a Baxi boiler to display error code 118?
Possible causes include leaks in the system, the need for repressurisation, or issues with the pressure relief valve. Regular maintenance can help prevent these issues.
For more information on common boiler errors and solutions, or to book a service with a qualified engineer, visit our boiler repair page.
