Bosch Condens 5000 W - Turn on the Isolators

6 720 646 196 (2013/08) Condens 5000 W
12 | Fault finding
7Fault finding
If a boiler fault occurs, please read the following page thoroughly before contacting Robert Bosch.
Problem Cause Remedy
Desired room temperature is not
reached
Thermostatic radiator valve(s) set too low ▶ Increase thermostatic radiator valve
setting(s)
Temperature control for central heating
flow on boiler set too low
▶ Increase central heating flow
temperature control setting
Air trapped in heating system
▶ Bleed radiators and recharge heating
system
Desired room temperature exceeded by
large amount
Radiators are too hot ▶ Turn down thermostatic radiator
valves/room thermostat
▶ Reduce central heating temperature
by turning down the Central Heating
control on boiler
Heating stays on for too long Clock is incorrectly set ▶ Check setting and adjust
No ON/OFF mains indicator Momentary power failure ▶ Switch off boiler at master switch,
wait a few seconds then switch on
again
Hot water cylinder temperature too low Temperature set too low ▶ Check setting and adjust
Hot water cylinder temperature too high Temperature set too high ▶ Check setting and adjust
Table 3