Valliant eco tec -codeS46

[phillip439s]

Have a Valliant Boiler eco 426 with status code S46 - boiler quiet & taking ages to heat & costing more to run. Only noticed when had bill through! It was high despite less usage. If we switch boiler off & on then no error/status codes & works fine.
Wondering if a service would sort as the status code s46 says comfort protection minimum load loss of flame or whether some sensor needs replacement
Thanks for any advice

 

[ShaunCorbs]

Likely it will need a full service eg cleaning and new ignition parts

 

[phillip439s]

Likely it will need a full service eg cleaning and new ignition parts

Thanks for reply, will get service booked in & see where it goes from there