Appendix
0020283671_03 Energy 2 Installation and maintenance instructions 29
Appendix
A Check programmes – Overview
Note
Since the programme table is used for various products, some programmes may not be visible for the product in
question.
Display Meaning
P.01 Burner operation on adjustable heat input:
The product operates after ignition with the heat input set between "0" (0% = Pmin) and "100" (100% = Pmax).
The function is active for 15 minutes.
P.02 Burner operation at ignition load:
After ignition, the product works at ignition load.
The function is active for 15 minutes.
P.03 The product runs in heating mode with the maximum heat input set using diagnostics code d.00.
P.04 Chimney sweep function:
If there is a domestic hot water demand, the product runs in domestic hot water mode and at maximum heat
input.
If there is no domestic hot water demand, the product runs with the partial heat load that is set via diagnostics
code d.00 and in heating mode.
The function is active for 15 minutes.
P.05 Filling the product:
The prioritising diverter valve moves to the mid-position. The burner and pump switch off (to fill or drain the
product).
If the pressure is lower than 0.03 MPa (0.3 bar) and then is above 0.05 MPa (0.5 bar) for longer than 15
seconds, the automatic purging function is activated.
The function is active for 15 minutes.
P.06 Purging the heating circuit:
The prioritising diverter valve is moved to the heating position.
The function is activated in the heating circuit for 15 minutes.
The pump runs and stops at regular intervals.
If required, this function can be manually switched off.
P.07 Purging the domestic hot water circuit:
The function is activated in the small domestic hot water circuit for 4 minutes and then in the heating circuit for
1 minute.
The pump runs and stops at regular intervals.
If required, this function can be manually switched off.
Automatic air vent
function
Purging the product:
If the pressure is lower than 0.03 MPa (0.3 bar) and then is above 0.05 MPa (0.5 bar) for longer than 15
seconds, the automatic purging function is activated.
The function is activated in the small domestic hot water circuit for 4 minutes and then in the heating circuit for
1 minute.
This function cannot be manually switched off.
B Overview of diagnostics codes
Note
Since the code table is used for various products, some codes may not be visible for the product in question.
Dia-
gnostics
code
Parameter
Values
Unit Increment, select, explanation
Default set-
ting
Own setting
Min. Max.
d.00 Heating maximum output – – kW The maximum heating output
varies depending on the product.
→ Section "Technical data"
Automatic: Unit automatically
adjusts the maximum output to
the current system demand
→ Section
"Technical
data"
Adjustable
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