0020308121_04 Installation and maintenance instructions 67
Diagnostics code Values
Unit Increment, select, explanation
Setting
Min. Max. Factory Current
D.023
Status of the heat demand
Current value Off, On
D.025
Status of the eBUS control's domestic
hot water demand
Current value Off, On
(Displayed if a control is connected.)
D.026
Function of internal additional relay
D.027
Function of ext. accessory relay 1
D.028
Function of ext. accessory relay 2
1 9 1: Circulation pump
2: External pump
3: Cylinder charging pump
4: Extraction hood
5: External solenoid valve
6: External fault message
8: eBUS remote control
9: Anti-legionella pump
10: Solar cyl. bypass valve
2
D.029
Heating circuit flow rate
Current value l/h Current flow rate quantity via the
water flow sensor
D.031
Automatic filling device
Current value 1. Semi-automatic
2. Automatic
D.033
Target fan speed value
Current value rpm
D.034
Actual fan speed value
Current value rpm
D.035
3-port valve position
Current value % 0: Heating position
1: Mid-position (centre position)
2: DHW
1
D.036
Domestic hot water circuit flow rate
Current value l/min Current flow rate quantity via the
water flow sensor impeller
D.039
Cold water temperature, actual value
Current value ℃ Domestic hot water inlet temperature
D.040
Flow temperature actual value
Current value ℃
D.041
Return temperature actual value
Current value ℃
D.043
Heat curve
0.1 4.0 0.05 1.2
D.045
Heat curve offset
5 30 ℃ 1 21
D.047
Outdoor temperature
Current value ℃ Only in conjunction with an outdoor
temperature sensor.
D.052
Offset: Gas valve stepper motor
101 183 Valid for the first 3 digits of the 3- or
5-digit offset. The offset is specified
on the rear or underside of the gas
valve assembly.
Product-
dependent
20 70 Valid for the last 2 digits of the 3-digit
offset. The offset is specified on the
rear or underside of the gas valve
assembly.
Product-
dependent