Worcester Bosch · Greenstar Highflow CDi ErP
SE boiler fault code
Greenstar Highflow 440CDi ErP & 550CDi ErP
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What SE means
Service required.
Gas Safe engineer: Book a service with a Gas Safe registered engineer, who will reset the reminder.
If you smell gas, a CO alarm sounds, anyone feels unwell, or there is an unsafe flame, leave and call 0800 111 999 from outside.
Renting? Report it to your landlord or housing provider first. They are responsible for gas safety and boiler repairs, and the repair should not cost you.
Safe check
This is a service reminder, not a breakdown. The boiler keeps working. Book a Gas Safe service; the engineer will reset the reminder. Do not make changes in parameter menus or settings.
When to contact an engineer
Book a service with a Gas Safe registered engineer, who will reset the reminder.