Baxi Baxi 600/800/Assure System 2 and 600 Combi 2 platform fault E.04.08
Maximum safe temperature value reached
Gas boilerWhat it means
Maximum safe temperature value reached, indicating insufficient circulation or safety thermostat issue
Likely causes
- Insufficient circulation
- Safety thermostat fault
- Worn or damaged venting valve seal
Where to start
- Check the pressure in the installation
- Switch on the manual degassing function
- Check that the pump is working
The full answer, free
- 5 more checks in order
- How to put it right, step by step
- The manual page for this fault (page 77), right under the answer
Safety: Isolate gas and power before you open the case. If you have been into the gas side, do a tightness test, and a combustion and flue check before you hand back. Gas Safe (UK) or RGI (Ireland) work only.
From the Baxi manual for the Baxi 600/800/Assure System 2 and 600 Combi 2 platform. Check the model on the data plate before you order parts.
Other Baxi Baxi 600/800/Assure System 2 and 600 Combi 2 platform fault codes
- E.04.09Difference between flue gas sensors 1 and 2 temperature values
- E.04.10Burner failed to ignite after 4 attempts
- E.04.11VPS gas valve test failed
- E.04.12Ignition failure for monitoring parasitic flame
- E.04.14Temperature difference between set point and burner exceeds 60s vs GVC configuration
- E.04.15Flue gas exhaust pipe blocked
- E.04.23Gas valve check valve internal stoppage
- E.04.24Gas family not detected during automatic detection function
- E.04.54Fault in gas valve control circuit