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Check For An Error Code (Using The Remote Controller) - Bosch 660 EF User Manual

Indoor model/ natural gas/lp gas boilers
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Check for an Error Code (Using the remote controller)

Error displays on the remote controller
If there is a problem with the unit, a numerical error code
will flash on the remote controller. If this occurs, take
appropriate measures as listed below. When an error
code appears, the display and the operation light will
flash together.
Error Code
Ignition error.
Abnormal combustion, low gas supply pres-
Abnormal combustion.
Table 15
Contact Bosch Thermotechnology if:
• Any other error code appears.
• An error code is indicated again after the above
actions were followed.
• There are any other questions.
Fig. 44
Check whether the gas valve is open. Press
the power button to turn the unit off, open a
hot water fixture, and turn the unit back on.
If the flashing number doesn't return the
problem is solved.
Have a professional check the gas supply
pressure. Contact the nearest Bosch agent.
Contact the nearest Bosch agent.
6 720 644 063



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660 efo