BoilerFaultCodes.com

Alpha Protec Plus Fault Codes

System Natural GasLPG 50-115 kW 2013-present
GC Numbers: 41-532-2341-532-2441-532-2541-532-26

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

0A1
Your boiler has tried to light several times but has been unable to create a flame, meaning you will not have any heating or hot water.
May be DIY safe · £100-350
0A2
Your boiler is struggling to detect a flame, which means it cannot fire up to provide heating or hot water.
Gas Safe engineer required · £100-280
0A3
Your boiler has switched itself off because it has reached an unsafe temperature to prevent damage to the internal components.
May be DIY safe · £120-350

All 33 fault codes

Code Severity Plain English
0A1 High Your boiler has tried to light several times but has been unable to create a flame, meaning you will not have any heating or hot water.
0A2 High Your boiler is struggling to detect a flame, which means it cannot fire up to provide heating or hot water.
0A3 High Your boiler has switched itself off because it has reached an unsafe temperature to prevent damage to the internal components.
0A5 High Your boiler has detected an issue with the internal fan, which is preventing the system from safely clearing exhaust gases and starting up.
0A7 High Your boiler has shut down because the exhaust gases have become too hot, which is a safety feature to prevent damage to the internal components.
0A8 High Your boiler is having trouble detecting the flame needed to heat your water, causing the system to shut down for safety.
0A9 High Your boiler has detected an electrical problem with the component that controls the gas supply, meaning it cannot ignite safely for heating or hot water.
0A15 High Your boiler has detected that the temperature readings coming from its internal sensors don't match up, so it has shut down to prevent overheating.
0A16 High Your boiler is struggling to heat up as quickly as it should, which suggests there is a problem with the water flow or a sensor inside the unit.
0A17 High Your boiler is struggling to heat up properly because the system isn't sensing the expected temperature increase when the unit is running.
0A18 High Your boiler has detected an unusual and sudden temperature shift and has shut down as a safety precaution to prevent overheating.
0A21 High Your boiler's internal computer has developed a critical error and can no longer control the heating system safely.
0A30 High Your boiler has stopped working because its internal temperature sensor has developed an electrical fault and can no longer monitor the water flow.
0A31 High Your boiler has detected an unusual temperature reading from the sensor that monitors water leaving the unit, causing it to shut down as a precaution.
0A37 – Pro Tec 50 High Your boiler has stopped working because water is not moving through the heating system quickly enough to prevent the unit from overheating.
0A43 High Your boiler has stopped working because a internal sensor that monitors the temperature of the water returning to the unit has developed an electrical fault.
0A44 High Your boiler has stopped working because one of its internal temperature sensors is reading an unusually high or low temperature, causing the system to shut down for protection.
0A80 High Your boiler is struggling to monitor the temperature of the water moving through the system, which causes it to shut down for safety after running for a short time.
0E2 High Your boiler is having trouble detecting whether a flame has successfully lit, which prevents it from running for safety reasons.
0E13 High Your boiler has locked itself out because the reset button has been pressed too many times in a short period.
0E25 High Your boiler's main control board has encountered an internal electronic error, meaning it can no longer safely operate the heating system.
0E33 High Your boiler is not receiving enough electrical power from the mains supply to operate safely and has shut down as a precaution.
0E34 Medium Your boiler's hot water sensor is reporting an unusual temperature reading, which means the system cannot safely heat your water.
0E37 High Your boiler has stopped working because the water pressure in the central heating system has dropped too low.
0E45 High Your boiler has detected a technical fault with the sensor that monitors exhaust gases, causing the system to shut down for safety.
0E46 High Your boiler has detected that the exhaust gases are either too hot or too cold, causing the system to shut down for safety.
0E81 High Your boiler has stopped working because its internal sensors are reporting conflicting or incorrect temperature readings.
0E98 High Your boiler has stopped working because its internal sensors are reporting conflicting or impossible temperature readings.
0E99 High Your boiler system is having trouble talking to the other boilers it works with, which may prevent some or all units from heating properly.
FE94 High Your boiler's control screen has developed a technical fault and can no longer communicate with the main system correctly.
FE95 High Your boiler has detected an issue with the sensor that monitors external water flow temperature, meaning it cannot accurately gauge how much heat is needed for your system.
FE96 Low Your boiler is having trouble communicating with the outdoor sensor that helps it adjust to the weather, which may affect its efficiency and temperature control.
FE97 High Your boiler's internal computer chips are not communicating correctly or haven't been set up to match your specific model.

Protect yourself from future repair bills

Monthly cover means no unexpected bills when your boiler breaks down.

Top rated
OpenFix
Boiler & heating care plans
Get a quote →
Hometree
from £12.95/month
Get a quote →
HomeServe
from £8.00/month
Get a quote →

Affiliate links — we may earn a commission at no extra cost to you.