At Rapid Response Plumbing and Heating, we’re here to shed light on boiler error codes or boiler fault codes, providing crucial knowledge that everyone should have.
Your boiler is an essential part of your home, so it’s important to keep it in good working order. One way to do this is to be aware of the boiler error codes that can occur. These codes can tell you what’s wrong with your boiler, so you can take action to fix the problem before it causes more serious damage.
What are Boiler Error or Fault codes?
Boiler error codes are a series of numbers or letters that are displayed on a boiler’s control panel when there is a problem with the boiler. Each boiler manufacturer such as Worcestor, Vaillant, Baxi etc has its own set of fault codes, so it is important to consult your boiler’s manual to determine what each code means.
Every UK citizen must aware of these code and here we bring the explanation of some common boiler error codes include:
Ideal boiler error or fault codes
F1: Low water pressure. This code means that the water pressure in your boiler is too low. This can be caused by a leak, a faulty expansion vessel, or a problem with the pump.
F2: Flame loss. This code means that the boiler has lost the flame. This can be caused by a faulty gas valve, a dirty flame sensor, or a problem with the ignition.
F3: Fan fault. This code means that the fan is not working properly. This can cause the boiler to overheat.
F4: Flow thermistor. This code means that the flow thermistor is not working properly. This can cause the boiler to overheat.
E110: Overheating. This code means that the boiler has exceeded its maximum temperature. This can be caused by a faulty thermostat, a problem with the pump, or a blockage in the system.
E125: Expansion vessel fault. This code means that the expansion vessel is not working properly. This can cause the boiler to overheat or under-pressurize.
E131: Primary heat exchanger fault. This code means that the primary heat exchanger is leaking or damaged. This can cause the boiler to overheat or lose efficiency.
Vaillant boiler fault codes
F22: Low water pressure. This code means that the water pressure in your boiler is too low. This can be caused by a leak, a faulty expansion vessel, or a problem with the pump.
F28: Ignition failure. This code means that the boiler has failed to ignite. This can be caused by a faulty gas valve, a dirty flame sensor, or a problem with the ignition.
F52: Faulty mass flow sensor. This code means that the mass flow sensor is not working properly. This can cause the boiler to overheat or under-pressurize.
F62: Delayed shutdown of gas valve. This code means that the gas valve has not shut down properly. This can cause the boiler to overheat.
F65: Electronics temperature too high. This code means that the electronics in the boiler have become too hot. This can be caused by a faulty thermostat, a problem with the pump, or a blockage in the system.
F78: Faulty DHW outlet sensor. This code means that the DHW outlet sensor is not working properly. This can cause the boiler to overheat or under-pressurize.
F93: Poor combustion quality. This code means that the combustion in the boiler is not good. This can be caused by a number of things, such as a dirty flame sensor, a faulty gas valve, or a problem with the ignition.
Worcester boiler error or fault codes
L1: Flow temperature overheat or no water flow. This code means that the boiler has detected a flow temperature that is too high or that there is no water flow. This can be caused by a number of things, such as a blockage in the system, a problem with the pump, or a faulty thermostat.
L2: Flame loss. This code means that the boiler has lost the flame. This can be caused by a faulty gas valve, a dirty flame sensor, or a problem with the ignition.
E110: Overheating. This code means that the boiler has exceeded its maximum temperature. This can be caused by a faulty thermostat, a problem with the pump, or a blockage in the system.
E125: Expansion vessel fault. This code means that the expansion vessel is not working properly. This can cause the boiler to overheat or under-pressurize.
E131: Primary heat exchanger fault. This code means that the primary heat exchanger is leaking or damaged. This can cause the boiler to overheat or lose efficiency.
E150: Faulty temperature sensor. This code means that a temperature sensor in the boiler is not working properly. This can cause the boiler to overheat or under-pressurize.
E160: Fan fault. This code means that the fan is not working properly. This can cause the boiler to overheat.
Baxi boiler error or fault codes
E01: Gas valve fault. This code means that the gas valve is not working properly. This can be caused by a faulty gas valve, a dirty flame sensor, or a problem with the ignition.
E02: Flame signal fault. This code means that the boiler has not detected a flame signal. This can be caused by a faulty gas valve, a dirty flame sensor, or a problem with the ignition.
E03: High limit thermostat fault. This code means that the high limit thermostat.
Boilers installation and maintenance is common in every households and needs to be handle carefully. Rapidheat247.co.uk engineers are certified gas engineers who can successfully install boilers and also can repair/service it. We are just a call away for any emergency boiler service.
We hope this guide finds you well and provides valuable insights into understanding and resolving boiler fault codes.
Written by Mr. Chad (Certified Engineer)
07888078885
