10 Maintenance
10.1 General
Maintenance operations are important for the following reasons:
To guarantee optimum performance.
To extend the life of the equipment.
To provide an installation which offers the user optimum comfort over
time.
Caution
Only qualified professionals are authorised to carry out
maintenance work on the heat pump and the heating system.
Danger of electric shock
Before any work, switch off the mains electricity to the heat pump
and the hydraulic or electrical back-up if present.
Danger of electric shock
Check the discharge from the capacitors of the outdoor unit.
Caution
Before working on the refrigeration circuit, switch off the appliance
and wait a few minutes. Certain items of equipment such as the
compressor and the pipes can reach temperatures in excess of
100°C and high pressures, which may cause serious injuries.
Caution
Do not drain the installation, except in cases of absolute
necessity. E.g.: several months' absence with the risk of
temperatures in the building falling below freezing.
10.2 Checking operation of the appliance
You can force the heating or cooling mode for the heat pump and back-up
in order to check that they are working correctly.
1. Access the Test menu by pressing the two keys on the left
simultaneously.
XX represents the flow temperature
2. Switch from C:XX heating to R:XX cooling mode using the and
keys.
3. Exit the Test menu and go back to the main display by pressing the
h
key.
10.3 Standard inspection and maintenance operations
An annual inspection with a tightness check in accordance with prevailing
standards is obligatory.
Fig.112
MW-5000132-5
Fig.113
MW-5000750-1
10 Maintenance
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