36
Contact a Bosch service dealer if:
• Any other error code appears.
• An error code is indicated again after the above actions were followed.
• There are any other questions.
In the event of a failure, the cause is
notified by a blinking failure display.
Please resolve the problem in
accordance with the table below.
Failure display
Details of Failure
Remedy
Fault occurs with the ignition
switch at the hot water supply
side.
Turn the power “Off”, make sure that the gas valve
is open and that the gas meter (microcomputer
meter) has not shut off the gas, and if this is the
problem, please rectify it. Then, turn the power
“On”, and when the hot water tap is turned on, it is
back to normal if nothing is displayed.
(This display is an example.)
Failure display blinks
11
F11
Fault occurs with combustion of
the unit.
Please contact your retailer or gas supplier.
99
F99
[Combustion lamp is lit. (
P6)]
In the event of a failure, you are notified by the combustion lamp blinking at the front of the unit.
Please resolve the problem in accordance with the table below.
• Fault occurs with the unit.
Make sure that the gas valve is open. Close
the hot water tap, then reopen it, and it is
back to normal if the combustion lamp is no
longer lit.
Combustion lamp
Details of Failure
Remedy
Continuously blinking
Lit
Unlit
(if using RCM3211)
(if using RCS3211)
Please check the failure display on the remote controller or the
combustion lamp on the main body.
Troubleshooting-3
