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Commissioning
Installer reference guide
225
EPRA14~18D + ET23E
Daikin Altherma 3 H HT F
4P644739-1A – 2022.03
Conditions:
Make sure all operation is disabled. Go to [C]:
Operation
and turn off
Space heating/cooling
and
Tank
operation.
1
Set the user permission level to
Installer
. See
124].
—
2
Go to [A.4]:
Commissioning
>
UFH screed dryout
.
3
Select
Start UFH screed dryout
.
4
Select
OK
to confirm.
Result:
The underfloor heating screed dryout starts. It stops
automatically when done.
5
To stop the underfloor heating screed dryout manually:
—
1
Open the menu and go to
Stop UFH screed dryout
.
2
Select
OK
to confirm.
To read out the status of an underfloor heating screed dryout
Conditions:
You are performing an underfloor heating screed dryout.
1
Press the back button.
Result:
A graph is displayed, highlighting the current step of the
screed dryout schedule, the total remaining time, and the
current desired leaving water temperature.
2
Press the left dial to open the menu structure and to:
1
View the status of sensors and actuators.
—
2
Adjust the current program
—
To stop an underfloor heating (UFH) screed dryout
U3-error
When the program is stopped by an error or an operation switch off, the U3 error
will be displayed on the user interface. To resolve the error codes, see
"14.4 Solving problems based on error codes"
243].
In case of a power failure, the U3 error is not generated. When power is restored,
the unit automatically restarts the latest step and continues the program.
Stop UFH screed dryout
To manually stop underfloor heating screed dryout:
1
Go to [A.4.3]:
Commissioning
>
UFH screed dryout
—
2
Select
Stop UFH screed dryout
.
3
Select
OK
to confirm.
Result:
The underfloor heating screed dryout is stopped.
Read out UFH screed dryout status
When the program is stopped due to an error, an operation switch-off, or a power
failure, you can read out the underfloor heating screed dryout status:
1
Go to [A.4.3]:
Commissioning
>
UFH screed dryout
>
Status
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