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For Your Safety Read Before Operating Your Water Heater; Power; Error Code Reset; Temperature Selection - Bosch Greentherm 9800 SE 160/199 Manual

Indoor residential and comme rcial tankless water heaters
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38 | Operating Instructions
For your safety read before operating your
water heater
WARNING: Explosion hazard!
▶ If you do not follow these instructions
exactly, a fire or explosion may result
causing property damage, personal
injury or loss of life.
A. This appliance is equipped with electronic ignition for
lighting the main burner. When turning the heater on, follow
these instructions exactly.
▶ Turn off the gas shut-off valve.
▶ Open windows and doors.
▶ Do not try to ignite the appliance.
▶ Do not touch any electrical switch, telephone, and do not
use outlets.
▶ Extinguish all open flames. Do not smoke! Do not use
▶ Warn all occupants of the building. Do not ring doorbells!
▶ If you can hear gas leaking, leave the building immediately.
▶ Prevent others from entering the building and notify the
police and fire department from outside the building.
▶ From outside the building, call the gas utility company and
a trained and certified installer.
B. Use only your hand to press the on/off control button. Never
use tools. If the touch control display is dirty, wipe down with a
damp cloth. Forceful repair may result in a fire or explosion.
C. Do not use this appliance if any part has been under water.
Immediately call a qualified service technician to inspect the
appliance and to replace any part of the control system and any
gas control which has been under water.


To turn ON the appliance;
▶ Touch and hold symbol
The LCD display shows the selected temperature.
When the burner is on, the display shows symbol
6 720 816 815 (2016/10)
for more than 3 sec.
(Fig. 32, [7]).
Fig. 33
To shut down the appliance;
▶ Touch and hold symbol

Error code reset

Some possible faults can be solved by resetting the appliance.
To remove an error code from the display,
▶ Touch and hold symbol
The appliance will initiate the start up sequence.
WARNING: Appliance malfunction!
▶ If the problem persists, contact your

Temperature selection

To select a hot water temperature:
▶ Touch the symbol
temperature is displayed.
Fig. 34
A lower temperature set point will reduce the risk of scolding,
reduce energy consumption and increase the longevity of the
heat exchanger.
Greentherm 9800 SE 160/199 | SEC 199
for more than 3 sec.
for more than 3sec.
until the desired



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