Brand hub
Worcester Bosch Fault Codes
Browse Worcester Bosch boiler fault codes with a cautious focus on safe user checks and engineer escalation. Use this hub to move into the right appliance section, then open the exact fault code page for quick meaning, safe first checks, and escalation advice.
Appliance hubs
1
Fault code pages
26
Guides linked in
1
Appliance types
Global appliance category hubs
Most searched fault codes
Most common fault families
sensor (7)
circulation (4)
overheat (4)
flame-loss (3)
fan and flue (2)
low-pressure (2)
Popular priority codes
101 for Boiler
Boiler has detected an overheat condition
110 for Boiler
Model-dependent overheat or high-limit-style lockout
200 for Boiler
Heating demand or controls signal issue
EA for Boiler
The boiler failed to establish a flame
A1 for Boiler
The boiler is detecting poor water circulation
229 for Boiler
The boiler has overheated or hit a high temperature limit
232 for Boiler
Flame detection has been lost during operation
233 for Boiler
Flame detection has been lost during operation
268 for Boiler
Water circulation or pump performance issue
286 for Boiler
Water circulation or pump performance issue
296 for Boiler
Flame detection has been lost during operation
297 for Boiler
Gas supply control or gas valve issue
Related guides
Practical background guides connected to this brand's fault-code pages.