2970 B
FAULT CODE
Worcester Bosch
System Pressure Drop Too Rapid (8000 Series)
High Severity
Engineer Required
On 8000 Series boilers, code 2970 B means system pressure is dropping at an unusually rapid rate, indicating a possible leak.
Step-by-Step Fix Guide
-
Step 1
Do not repressurise repeatedly
-
Step 2
Check the system visually for leaks
-
Step 3 Engineer only
Call a Gas Safe engineer — a rapid pressure drop usually indicates a significant system leak
Gas Safe Reminder
Work on gas appliances must be carried out by a Gas Safe registered engineer. The steps above cover safe checks a homeowner can perform - any internal component replacement requires a qualified professional. If in doubt, always call an engineer.