Alpha CD Series fault codes
Built 2008–2016
Older range still in service, and the gap in what can be checked. Alpha no longer host its manual on their current site, so we cannot say whether its numbering matches the E-Tec set. Find the manual for the specific appliance before reading any table against it.
Codes on the CD Series follow the same Alpha scheme as the rest of the range. Where a code behaves differently on this generation, the code page says so.
Alpha fault codes
Every published Alpha code. Open a code to see which models and years it applies to.
- E01The appliance tried to light and could not confirm a flame, so it has locked out. In winter a frozen condensate pipe is the most likely reason.Get it checked
- E10Alpha describe E10 as the primary pressure switch operating. Refilling to their green band usually clears it, but the switch itself is on their own list of causes.Get it checked
- E02The overheat thermostat has tripped. Almost always this means water is not moving through the appliance properly rather than that it is running too hot.Get it checked
- E16The control board cannot confirm the fan is running at the speed it asked for, so it will not let the burner light. This one needs an engineer.Get it checked
- E60The appliance cannot confirm the pump is moving water. Left alone it becomes an overheat fault, so it is worth acting on promptly.Get it checked
- E20Alpha call this a flame sensing fault and define it as false flame detection: the appliance can see a flame while the gas valve is shut. Switch it off and call an engineer.Stop — call an engineer
- E38The burner lit correctly and then the flame signal was lost part-way through the cycle. That points somewhere different to a failure to light.Get it checked
- E03Flue gas temperature has exceeded the safe limit. It usually means the heat exchanger is not transferring heat properly into the water.Get it checked