BoilerFaultCodes.com

Vaillant Ecomax 613 2 E Fault Codes

System Natural Gas 13 kW 2001-2005 Discontinued
GC Number: 41-044-33

Replaced by: ecoTEC plus 612

The fault code is already on your display

Note it down before pressing reset — resetting clears the code immediately. How to read fault codes →

Most common fault codes

F.0
Your boiler has lost connection with its main internal temperature sensor, meaning it cannot safely tell how hot the water is and has shut down as a precaution.
Gas Safe engineer required · £90-160
F.1
Your boiler has stopped working because it cannot correctly measure the temperature of the water returning to the unit due to a faulty sensor or connection.
Gas Safe engineer required · £90-160
F.10
Your boiler has stopped working because a sensor that monitors water temperature has developed an electrical fault.
Gas Safe engineer required · £120-£190

All 26 fault codes

Code Severity Plain English
F.0 High Your boiler has lost connection with its main internal temperature sensor, meaning it cannot safely tell how hot the water is and has shut down as a precaution.
F.1 High Your boiler has stopped working because it cannot correctly measure the temperature of the water returning to the unit due to a faulty sensor or connection.
F.10 High Your boiler has stopped working because a sensor that monitors water temperature has developed an electrical fault.
F.11 High Your boiler has stopped working because one of its internal temperature sensors has developed an electrical fault and is giving an incorrect reading.
F.13 High Your boiler has lost connection to the hot water cylinder sensor, meaning it cannot tell how hot your water is or when to heat it.
F.20 High Your boiler has switched itself off because it has reached an unsafe temperature and needs to cool down before it can restart.
F.22 High Your boiler has detected that there is not enough water pressure in the system to operate safely.
F.23 High Your boiler is struggling to circulate water properly, often because the system pressure is too low or there is trapped air preventing the heat from moving away from the boiler.
F.24 High Your boiler is overheating because water isn't moving through the system quickly enough to take the heat away.
F.25 High Your boiler has detected that the water pressure has dropped too low or there is a problem with the internal sensor that monitors it, causing the system to shut down for safety.
F.27 High Your boiler has detected a signal error between its control system and gas supply, preventing it from lighting safely.
F.28 High Your boiler has failed to ignite, which means it cannot light the gas flame required to provide heat or hot water.
F.29 High Your boiler has lost its gas supply or the flame has gone out and it cannot restart itself.
F.32 High Your boiler's fan is struggling to spin at the correct speed, which prevents the unit from starting up safely to heat your home.
F.41 High Your boiler has lost its electronic connection to the gas control valve, meaning it cannot safely release fuel to start the flame.
F.42 High Your boiler's electronic control panel is unable to identify the specific model of boiler it is supposed to be operating due to an electrical connection fault.
F.43 High Your boiler's control board cannot identify which model it is supposed to be, causing it to shut down for safety.
F.60 High Your boiler has detected an electrical fault with the part that controls the gas supply, meaning it cannot ignite safely for heating or hot water.
F.61 High Your boiler has detected an electrical problem with the system that controls the gas flow, meaning it cannot light safely for heating or hot water.
F.62 Emergency Your boiler has detected that the gas valve is not closing properly or there is a communication error between the gas valve and the control board.
F.63 High Your boiler's internal computer brain has developed a memory error and cannot process the instructions needed to run safely.
F.64 High Your boiler has detected an electrical issue with its internal heat sensors or the main control board, preventing it from heating your home safely.
F.65 High Your boiler's internal control board has become too hot to operate safely and has shut down to prevent damage.
F.67 High Your boiler has detected a flame when there shouldn't be one, or has a confusion in its internal electronics, causing it to shut down for safety.
F.70 High Your boiler's electronic brains are essentially having a communication breakdown and don't recognize each other, causing the unit to stop working for safety.
F.75 High Your boiler has sensed that the pump is running but the water isn't moving through the system properly, causing it to shut down to prevent damage.

Status & diagnostic codes

These codes indicate your boiler's operating state or a diagnostic reading — not necessarily a fault. Status codes (S.) mean normal operation; diagnostic codes (D.) are informational readings used by engineers.

Code Type Description
S.0 Status Your boiler is working correctly but is currently idle because it hasn't been told to turn on by your thermostat or timer.
S.1 Status Your boiler is currently working as normal to pump heat through your radiators and does not have a fault.
S.2 Status Your boiler is preparing to heat your home and is checking that water is moving through the pipes before it lights the burner.
S.3 Status Your boiler is currently trying to start the ignition process to provide heating, which is a normal part of the startup sequence and not necessarily a fault unless it remains stuck on this screen.
S.4 Status Your boiler is operating normally and is currently in the process of heating your radiators.
S.5 Status Your boiler is currently cooling itself down after a heating cycle and will resume normal operation shortly.
S.6 Status Your boiler is trapped in a cooling-down cycle where the fan keeps running longer than necessary, preventing it from starting a new heating cycle.
S.7 Status Your boiler is temporarily keeping the internal pump running to safely cool down the heat exchanger after a period of heating.
S.8 Status Your boiler is taking a short rest to prevent it from switching on and off too frequently, which helps save energy and protect its internal components.
S.10 Status Your boiler is simply indicating that it is currently working to heat your hot water tank as requested.
S.11 Status Your boiler is currently working as it should to heat up your hot water tank.
S.13 Status Your boiler is currently going through the normal steps to start the ignition process for your hot water.
S.14 Status Your boiler is currently working correctly and is providing heat to your hot water tank as intended.
S.16 Status Your boiler's fan is staying on for longer than usual to cool the internal components after providing hot water.
S.17 Status Your boiler is briefly keeping the pump running to dissipate excess heat after heating your hot water, which is a normal operational status rather than a breakdown.
S.20 Status Your boiler is simply indicating that it is currently pre-heating itself to ensure hot water is available quickly when you need it.
S.21 Status Your boiler is currently preparing itself to provide hot water quickly and is not actually reporting a fault.
S.23 Status Your boiler is currently preparing to fire up the burners to heat your water or radiators after a brief pause.
S.24 Status Your boiler is performing a routine start-up process to keep its internal water warm and is not actually experiencing a fault.
S.26 Status Your boiler is staying in a cooling-down mode because the internal fan is running for longer than it should after heating your water.
S.27 Status Your boiler is briefly running its internal pump to circulate water and manage heat after it has been turned off, which is a normal operating state rather than a breakdown.
S.28 Status Your boiler is taking a short, planned break to prevent it from turning on and off too frequently, which helps protect the internal components and improve efficiency.
S.30 Status Your boiler is working fine, but it is currently waiting for your thermostat or programmer to tell it to turn on.
S.32 Status Your boiler is pausing because its internal fan is not reaching the correct speed required to safely start the heating process.
S.34 Status Your boiler is not broken; it has simply noticed the temperature is very cold and is running the pump or burner automatically to prevent the internal pipes from freezing.
S.36 Status Your boiler is working fine but it is not receiving a signal from your thermostat or timer to turn the heating on.
S.37 Status Your boiler is temporarily pausing because the fan speed is not within the required range for a safe startup.
S.39 Status Your boiler has paused because it detected that the water temperature is too high for your underfloor heating system, triggered by a safety safety switch to protect your floors.
S.53 Status Your boiler has temporarily paused its operation because it senses there is not enough water flowing through the system to heat your home safely.
S.54 Status Your boiler has paused because it cannot detect enough water flow or pressure to operate safely without overheating.

Vaillant Ecomax 613 2 E is discontinued — time for a new one?

Parts for discontinued models can be hard to find and expensive. A new A-rated boiler could save you money on both repairs and energy bills.

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