Servicing; Operating Codes - Buderus 800 User Manual

5

Servicing

5.1

Operating codes

NOTE
If the code displayed on the burner-control
unit is not listed under the operating codes
or fault warnings, the burner-control unit
itself is malfunctioning.
Display after
Display pressing the ser-
vice button
0
-.
=.
r
Wall-mounted condensing gas boiler Buderus 800 - Subject to modifications resulting from technical improvements!
Meaning
800 Series is ready for operation
A
Burner interval circuit, 10 minutes from start of burner
C
Waiting for the three-way valve and/or pump to switch
H
Ready for operation
L
First safety period
P; U
Safety period
Y
Flow water temperature setting reached (switching difference +2 K)
800 Series runs in heating mode
A
Chimney sweep mode
H
Normal heating mode
Y
Service mode
800 Series runs in hot water mode
H
Normal hot water mode
Reset (after reset button has been pressed for 5 sec. UBA is reset to the switch-on
condition)
Servicing 5
39