When the temperature is displayed, briefly pressing the back key
h
will
return to the time display.
5.2.2
Description of the PCBs
When commissioning the hybrid system with the boiler, the PCB displayed
in the main menu is EHC-02. The name of the PCB is displayed on the
screen: .
When commissioning the boiler, the PCB displayed is the CU-OH1.
The primary circuit is managed by the CU-OH1 central unit PCB. The
name of the PCB is displayed on the screen: .
See
Boiler instructions for setting the boiler parameters
Only the installer can access the parameters and settings for each PCB.
In order to control an installation that has an additional circuit, it will be
necessary to install the SCB-04 PCB. The name of the PCB is displayed
on the screen: .
Important
Given that numerous settings can be made on the 2 PCBs,
depending on the circuit concerned, the name of the PCB will be
represented by
in the rest of the manual.
Selecting a PCB
1. Access the menus by pressing the two keys on the right
simultaneously.
2. Access the PCB selection menu (only when several PCBs are
present).
Important
The PCB selection menu is available only when the icon
flashes.
3. Scroll through the names of the connected additional PCBs by
pressing the or keys.
The names of the installed PCBs will be displayed in sequence.
4. Confirm the required PCB by pressing the
key.
Important
The flow temperature for the selected PCB is displayed by default,
as well as the status of the pump(s) and the status of the valve
connected to the selected PCB.
5. Go back to the main display by pressing the
h
key.
5.3
Start-up
1. Switch on the outdoor unit and the indoor module.
2. The heat pump begins its start-up cycle.
If the start-up cycle runs normally, an automatic venting cycle is
initiated. Otherwise, an error message is displayed.
Fig.25
PCB managing the heat pump and
the hybrid functions
MW
-1
0
0
0
5
9
1
-2
Fig.26
MW
-2
0
0
0
3
7
4
-2
Fig.27
Management of a second
circuit
MW
-2
0
0
0
3
7
5
-2
Fig.28
MW-2000369-1
Fig.29
MW
-5
0
0
0
1
3
7
-2
MW
-5
0
0
0
1
3
7
-2
5 Operation
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