Bosch Tronic 3000T ES 2.5 Installation Manual And Operating Instructions page 15

7.1 Resetting High Limit Switch
Occasionally, the high temperature limit shut off device may
trip the reset. This occurs when water temperature exceeds
190 °F. The shut off device may also trigger from a power
outage or electrical storm.
To reach the thermostat:
▶ Disconnect power cord (or shut off circuit breaker - model
ES8) and remove the front cover.
▶ Firmly press reset button [B] with the tip of a ball point pen
or similar object.
Fig. 13
A click indicates the reset was tripped.
▶ Reconnect power.
IMPORTANT: Check the operation of the thermostat:
▶ Turn temperature dial from high to low.
If the red light does not go off on low setting:
▶ Turn off power supply and call a service person to replace
the thermostat.
If the red light does go off the thermostat is working well:
▶ Place dial setting to desired setting.
A lower setting is more economical and
reduces the risk of scalding.
▶ Replace cover plate.
CAUTION:
Call a technician if the high limit needs to be
reset frequently.
Tronic 3000T – 6 720 801 072 (2018/04)
6720801072-12.1V
Troubleshooting
15