4 210 256 / 01
30
Maintenance
6.5 Safety temperature limiter - release
Exhaust gas temperature limiter - release
If the exhaust gas temperature rises too high, the system is switched off by the exhaust gas safety tempera-
ture limiter by means of a mechanical lock-out.
By pressing the unlocking button, the boiler is again ready for service.
The reason for the excessive exhaust gas temperature must be established by the installation engineer.
Possible causes are:
- excessive contamination of the heating surface
- burner output set too high
Boiler water temperature limiter - release
If the boiler temperature rises too high (>100 °C), the system is switched off by the safety temperature limiter
by means of a mechanical lock-out.
By pressing the unlocking button on the control panel (first remove the cover), the boiler is again ready for
service once the boiler water temperature is less than 80 °C.
