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7.6
Adjusting the Electrical auxiliary heater
The appliance can be operated either with a single-phase or a 3-phase
connection. The default setting for specific countries will be the 3kW
single-phase connection ( see table 14). This setting can be changed
in the Electrical auxiliary heater menu.
Countries
France
Great Britain
Ireland
Italy
Table 14 Countries with single-phase connection set by default
To change the default setting, follow the steps below:
▶ In the Service menu: System settings > Auxiliary heater > Electrical
auxiliary heater.
Temperature differential in the heating system
▶ Set the output at the heating pump PC1 so that the following
difference is achieved:
▶ With underfloor heating system: 4.5 K.
▶ With radiators: 7.5 K.
7.7
Function test
The compressor is preheated before starting. This can take up to
30 minutes, depending on the outdoor temperature. The prerequisite
for starting is that the compressor temperature (TR1) is 20K higher than
the supply air temperature (TL2) and 20K lower than the flow
temperature from the heat pump (TC3). The set point is limited between
20 °C and 45 °C. The temperatures are displayed in the diagnosis menu
of the control unit.
Quick start of the heat pump is only possible when there is an active heat
demand.
The manual defrost of the heat pump is only possible when the
compressor is running with the 4-way valve in heating mode and the
outdoor temperature is below 15 °C.
When the function test menu is activated on the control panel, software
restrictions are deactivated (i. e. high temperature protection for under
floor heating).
▶ Test active components of the system.
▶ Check if there is a heating or hot water demand.
-or-
▶ Draw off DHW or increase the heating curve to generate demand (
instructions for control unit).
▶ Check whether the heat pump starts.
▶ Make sure that no alarms are currently active.
-or-
▶ Troubleshooting.
▶ Check the operating temperatures ( instructions for the control
unit).
7.7.1
Overheating protection (OHP)
The overheating protection triggers when the temperature of the electric
booster heater rises above 88 °C.
▶ Make sure that the particle filter is not blocked and that the flow
through the heat pump and heating system is unimpeded.
▶ Check the operating pressure.
▶ Check the heating and DHW settings.
Compress 5800i AW – 6721858460 (2023/06)
▶ Reset the overheating protection. To do this, press the button on the
electrical heater.
1
Fig. 38 Electrical heater
[1]
Reset over heat protection
8
Maintenance
DANGER
Electrical shock!
▶ Before working on the electrics, the main power supply must be
switched off.
NOTICE
Deformation due to heat!
If the temperature is too high, the insulation (EPP) in the indoor unit
deforms.
▶ When carrying out brazing work in the heat pump, protect the
insulation with a heat resistant cloth or damp cloth.
▶ Only use original spare parts!
▶ Refer to the spare parts list when ordering spare parts.
▶ Replace removed gaskets and O-rings with new ones.
The tasks described below must be carried out during an inspection.
Maintenance
0010041385-001
31
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