Installation & Servicing instructions ATAG A-Series
40
14 Error message
A detected failure is indicated on the display in blocking or error messages.
- Blocking code with spanner symbol
Error is temporary and will cancel itself or will lock the boiler after several attempts
(error)
- Error code with bell symbol
Error means a lock on the boiler and can only be remedied by a reset and/or
intervention by a service technician.
C 10 Outside sensor error (e.g. open, short circuit, outside of range)
C 20 Flow sensor error (e.g. open, short circuit, outside of range)
C 40 Return sensor error (e.g. open, short circuit, outside of range)
C 50 Wiring fault: Connector X7 not connected correctly. Low voltage wiring
harnass defect
C 78 Water pressure outside of range or not connected or if water pressure is OK:
Pump failure
C1 05 Venting program active
C1 10 Safety temperature exceeded
C1 11 Maximum temperature exceeded
C1 17 Pressure too high (> 3 bar) or pump pressure increase too high
C1 18 Pressure too low (< 0.7 bar) or pump pressure increase too low (no pump
detection)
C1 19 Link on X2 position 4 and 5 missing
C1 29 Fan error (fan does not start up)
C1 33 no ame after 5 ignition attempts
C1 51 fan error (speed control is not achieved or is outside of range)
C1 52 Para 555 b0 is changed from 0 to 1 instead of b2. Change back through
green button function (installer level Para 681 b7)
C1 54 ow increases to fast ∆T to large, return > supply
C1 56 Pump failure
C1 80 No error: shortly visible when leaving chimney sweep function
C1 81 No error: shortly visible when leaving commissioning mode
Example of display of error
message
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