Manufacturer error-code directory

Alpha Heating Innovation error codes

Find the meaning of Alpha Heating Innovation fault, warning and status codes, with model context, documented causes, safe checks and links to available manufacturer guidance.

16documented codes
1products and models
1product categories

About Alpha Heating Innovation error codes

An error code is a diagnostic clue, not a complete repair diagnosis. Alpha Heating Innovation may reuse similar-looking codes across different products, model generations or regions, so always confirm the complete code and exact model before following instructions or ordering parts.

This profile connects every indexed Alpha Heating Innovation code to its dedicated explanation page. Each page is structured around the search intent: a quick meaning, symptoms, likely causes, safe troubleshooting, reset guidance, applicable products and the point at which professional help is appropriate. Records marked as verified include the manufacturer or another authoritative technical source.

Start with the code shown on the display, then narrow the result by product or model. Do not assume that a reset has repaired the underlying fault. If a code returns, the product is unsafe, or diagnosis requires internal electrical, gas, refrigerant or moving components, stop and use an authorised technician.

Browse by equipment

Alpha Heating Innovation product groups

Code directory

All Alpha Heating Innovation codes

Showing 1–16 of 16

Open advanced search →
E01Alpha Heating Innovation · Alpha E-Tec gas boilers · United KingdomIgnition failureAlpha Heating Innovation documents E01 for the Alpha E-Tec gas boilers as “Ignition failure”. This is the quick…E02Alpha Heating Innovation · Alpha E-Tec gas boilers · United KingdomOverheat thermostat operatedAlpha Heating Innovation documents E02 for the Alpha E-Tec gas boilers as “Overheat thermostat operated”. This is the…E03Alpha Heating Innovation · Alpha E-Tec gas boilers · United KingdomFlue thermostat or fan faultAlpha Heating Innovation documents E03 for the Alpha E-Tec gas boilers as “Flue thermostat or fan fault”. This…E04Alpha Heating Innovation · Alpha E-Tec gas boilers · United KingdomFlame failure after ignitionAlpha Heating Innovation documents E04 for the Alpha E-Tec gas boilers as “Flame failure after ignition”. This is…E05Alpha Heating Innovation · Alpha E-Tec gas boilers · United KingdomFlow sensor faultAlpha Heating Innovation documents E05 for the Alpha E-Tec gas boilers as “Flow sensor fault”. This is the…E06Alpha Heating Innovation · Alpha E-Tec gas boilers · United KingdomDHW sensor faultAlpha Heating Innovation documents E06 for the Alpha E-Tec gas boilers as “DHW sensor fault”. This is the…E10Alpha Heating Innovation · Alpha E-Tec gas boilers · United KingdomLow water pressureAlpha Heating Innovation documents E10 for the Alpha E-Tec gas boilers as “Low water pressure”. This is the…E20Alpha Heating Innovation · Alpha E-Tec gas boilers · United KingdomFlow temperature sensor faultAlpha Heating Innovation documents E20 for the Alpha E-Tec gas boilers as “Flow temperature sensor fault”. This is…E21Alpha Heating Innovation · Alpha E-Tec gas boilers · United KingdomReturn temperature sensor faultAlpha Heating Innovation documents E21 for the Alpha E-Tec gas boilers as “Return temperature sensor fault”. This is…E25Alpha Heating Innovation · Alpha E-Tec gas boilers · United KingdomPrimary water circulation faultAlpha Heating Innovation documents E25 for the Alpha E-Tec gas boilers as “Primary water circulation fault”. This is…E26Alpha Heating Innovation · Alpha E-Tec gas boilers · United KingdomPrimary water overheatAlpha Heating Innovation documents E26 for the Alpha E-Tec gas boilers as “Primary water overheat”. This is the…E35Alpha Heating Innovation · Alpha E-Tec gas boilers · United KingdomFlame detected incorrectlyAlpha Heating Innovation documents E35 for the Alpha E-Tec gas boilers as “Flame detected incorrectly”. This is the…E96Alpha Heating Innovation · Alpha E-Tec gas boilers · United KingdomElectrical supply voltage faultAlpha Heating Innovation documents E96 for the Alpha E-Tec gas boilers as “Electrical supply voltage fault”. This is…E97Alpha Heating Innovation · Alpha E-Tec gas boilers · United KingdomElectrical supply frequency faultAlpha Heating Innovation documents E97 for the Alpha E-Tec gas boilers as “Electrical supply frequency fault”. This is…E98Alpha Heating Innovation · Alpha E-Tec gas boilers · United KingdomInternal control faultAlpha Heating Innovation documents E98 for the Alpha E-Tec gas boilers as “Internal control fault”. This is the…E99Alpha Heating Innovation · Alpha E-Tec gas boilers · United KingdomInternal control faultAlpha Heating Innovation documents E99 for the Alpha E-Tec gas boilers as “Internal control fault”. This is the…