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Fig.74
8
10.5
Checking the hydraulic pressure
10.6
Checking operation of the appliance
10.7
Replacing the battery in the control panel
7756241 - v02 - 19062020
8. Refit the sludge collector.
Caution
Risk of breakage.
Observe the keyway of the plastic part: align the notch with the
pin.
Check that the seal is correctly positioned before tightening with
the key.
9. Open the stop valves and reactivate the water supply to the appliance.
10. Re-commission the appliance.
MW-1001315-2
If the hydraulic pressure of your heating system installation is too low or
too high, malfunctions and faults may appear.
Recommended hydraulic pressure: from 1.5 bar to 2 bar.
1. Check the hydraulic pressure shown on the control panel.
2. If the hydraulic pressure is too low, top up the water.
This function is used to force the heat pump and back-up in heating or
cooling mode, in order to check that they are working correctly.
1. Press the
2. Select Commissioning Menu.
On
3. Select Load Test.
4. Select the operating mode for which you would like to see the
information. Off, Medium power or Control unit Cooling.
To test operation in heating mode, it is possible to modify the system
set point temperature.
To test operating in cooling mode, the minimum set point is 10 °C but
this can be set to a higher temperature.
It is strongly advised not to leave the system in this operating mode
for long periods as the heating circuits (mixing valves, pumps) are not
regulated.
If the indoor module is switched off, the control panel battery takes over to
keep the correct time.
The battery must be replaced when the time is no longer saved.
1. Remove the front panel by pulling firmly upwards.
2. Tilt the control panel support forwards.
3. Tilt the control panel bracket forwards and hang it in a horizontal
position.
key.
10 Maintenance
MIT-M
97
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