Potterton Fault Codes

Select a fault code to see its meaning, common causes and how to fix it.

E119 The E119 code appears on Potterton boilers when the system water pressure has dropped too low — typically below 0.5 bar… Read more →
E125 The E125 code appears on Potterton boilers when the appliance detects a problem with water circulation through the… Read more →
E133 The E133 code appears on Potterton boilers — often displayed as 'E1' alternating with '33' — when the boiler has… Read more →