0020308121_04 Installation and maintenance instructions 71
Diagnostics code Values
Unit Increment, select, explanation
Setting
Min. Max. Factory Current
D.166
ADC fault index
0 20 1: Check the flow temperature
sensor
2: Check the return temperature
sensor
5: Check the heat cell coding resistor
6: Check the control electrode
7–8: Check the ignition electrode
9: Check the DHW inlet temperature
sensor
15: Check the fan coding resistor
17, 19, 20: Check the control elec-
trode
D.167
Cylinder connection
0 1 0: Cylinder not connected
1: Cylinder connected
0
D.170
Hydraulic operating mode
0 4 0: Without bypass, Δp-const.
1: W/o bypass, Δp-const.,kick
2: Bypass, Δp-const.
3: Spread ΔT
4: Fixed pump stage
The diagnostics codes D.171 - D.175
refer to the selection in D.170.
Product-
dependent
D.171
Target pressure level value
100 400 mbar Valid for Without bypass, Δp-
const., W/o bypass, Δp-const.,kick
and Bypass, Δp-const..
200
D.172
Target spread value
Current value K Valid for Spread ΔT. 20
D.173
Minimum pressure level
Current value mbar Valid for Spread ΔT. 100
D.174
Maximum pressure level
Current value mbar Valid for W/o bypass, Δp-
const.,kick, Bypass, Δp-const. and
Spread ΔT.
400
D.175
Pump stage
Current value % 10
Valid for Fixed pump stage.
100
D.182
Offset: Gas valve assy step. motor 2
1 80 Valid for the last two digits of gas
valve assemblies with an offset with
five digits. The offset is specified
on the rear or underside of the gas
valve assembly.
Valid for products with liquefied pet-
roleum gas set as the gas type.
Product-
dependent
D.185
Configuration type setting
0 1 0: Single-flue configuration
1: Multiple-flue configuration
Multiple-flue configuration can only
be selected if D.187 is enabled.
0
D.186
Multiple-flue system diagram
0 5 0: Not selected
1: Basic diagram 1
2: Basic diagram 2
3: Basic diagram 3
4: Basic diagram 4
5: Basic diagram 5
(Only visible if Multiple-flue con-
figuration is selected under D.185.
Only the selection for the product in
question is shown here.)
0
D.187
Enable flue system config.
Enable flue sys./diag. sel.
Flue sys./diagram selected
(only visible if the conversion set
comprising air intake pipe with integ-
rated non-return valve and air-mass
flow sensor is installed)
Product-
dependent
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