6 720 817 281 (2017/05)
Greentherm 9800 SEO 160/199 | SECO 199
Maintenance and service | 29
8.5
Programming the default setpoint
temperature
Fig. 26
▶ Press the buttons
and
to select the temperature
to be memorized.
▶ Press the programming button for 3 seconds to save the
default set point temperature.
When the display stops blinking, the default set point
temperature is saved in memory.
Recall the default setpoint temperature
In order to select the default setpoint temperature, in case of a
change.
▶ Press the programming button for 1 second.
The display shows the temperature previously memorized and
this goes on to be the selected temperature.
9
Maintenance and service
9.1
Annual maintenance
(To remove front cover, see page 9)
Venting System
•
Venting system - before removing the front cover inspect
vent opening in the front cover for any blockage or
restriction.
•
Observe burner flames during heater operation (front
cover must be removed). Burner flames should be steady
and blue. Yellow, inconsistent (bouncing) flames may be an
indication of poor ventilation or combustion air intake.
Inspect combustion air openings for blockage or debris.
DANGER:
▶ Always shut off the electrical power
supply, shut off the manual gas valve
and shut off the water valves whenever
servicing.
DANGER:
▶ Replace all dismantled joints and o-rings
with new ones.
6720806146-05.1V
NOTICE:
▶ Inspect and clean the complete water
heating system once a year.
▶ Inspect the water heater and
components for wear or fatigue.
Immediately repair all faults to avoid
damage to the system.
Annual maintenance table
Every year
1. Inspect venting system
X
2. Inspect combustion chamber
X
3. Inspect burner
X
1)
1) Proceed with burner cleaning if error code CE is displayed.
Check the flue exhaust for blockage (appliance is protected
against flue blockage).
4. Inspect pressure relief
X
5. Inspect water filter
X
6. Heat Exchanger Descaling
2)
2) Proceed with heat exchanger descaling whenever error
codes AA and E5 are displayed (appliance is protected
against over heating in case of scaling).
7. Inspect condensate trap
X
Table 14 Annual maintenance
WARNING:
Gas leakage!
▶ Replace burner seals in case burner is
disassembled. Consult spare part list at
www.boschheatingandcooling.com.
