Appendix
0020214272_04 atmoTEC exclusive, atmoTEC plus Installation and maintenance instructions
35
Status code
Meaning
S.13
DHW mode: Ignition
S.14
DHW mode: Burner on
S.17
DHW mode: Pump overrun
Displays in Comfort mode with warm start or domestic hot water mode with cylinder
S.20
Domestic hot water requirement
S.23
DHW mode: Ignition
S.24
DHW mode: Burner on
S.27
DHW mode: Pump overrun
S.28
Domestic hot water burner anti-cycling time
Other displays
S.30
Room thermostat blocks heating mode (control at terminals 3-4-5, terminals 3-4 are open)
S.31
Summer mode active or eBUS control is blocking heating mode
S.36
Control target value lies below 20 °C, external control blocks heating mode (control at terminals 7-8-9)
S.39
Surface-mounted thermostat contact open
S.41
Water pressure > 0.27 MPa (2.7 bar)
S.42
Flue non-return flap open (flue non-return flap feedback blocks burner operation)
S.51
The product is within the 55 s tolerance period as a result of a flue gas potentially escaping
S.52
The product is within the 20 minute waiting period due to flue gas exit
S.53
The product is within the 2.5 minute waiting period due to a water deficiency (difference between flow and return
is too large)
S.54
The product is within the 20 minute waiting period due to a water deficiency (temperature gradient)
S.96
Return sensor test running, heating demands are blocked.
S.97
The water pressure sensor test is running, the heat demands are blocked.
S.98
Flow/return sensor test running, heating demands are blocked.
