The E113 error code on a Baxi boiler typically indicates a circulation issue within the central heating system. This means that water isn’t moving through the system as it should, which could be due to a blockage, airlock, or a fault with the pump.
Causes of E113 Error
Faulty Pump
: If the pump isn’t working properly, water won’t circulate through the boiler and radiators.
Blocked Pipes
: Sludge or debris in the pipework can restrict water flow.
Airlocks in the System
: Trapped air can prevent the efficient movement of water.
Closed Valves
: A closed or partially closed valve in the system could block water circulation.
How to Fix an E113 Error
Check the Pressure
Ensure the system pressure is between
1.0 and 1.5 bar
.
If the pressure is low, repressurize the system using the filling loop.
Bleed the Radiators
Air trapped in radiators can cause circulation problems.
Use a radiator key to release air from each radiator, starting with the one furthest from the boiler.
Inspect Valves
Ensure all isolation and radiator valves are fully open to allow water to circulate.
Reset the Boiler
After performing the above checks, reset the boiler to see if the error clears.
Call a Gas Engineer
If the issue persists, a professional may need to:
Check and repair the pump.
Flush the system to remove sludge or debris.
Inspect internal components for faults.
To prevent circulation issues like E113, schedule regular servicing and keep your heating system clean and well-maintained.