11 Maintenance
11.1 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 mainte
nance work on the heat pump and the heating system.
Danger
Before any work, switch off the mains electricity to the heat pump
and the hydraulic or electrical back-up if connected.
Caution
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 necessi
ty. E.g.: several months' absence with the risk of temperatures in
the building falling below freezing.
11.2 Checking operation of the appliance
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. Access the Test menu by pressing the two keys on the left simulta
neously.
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.
11.3 Standard inspection and maintenance operations
An annual inspection with a tightness check in accordance with prevailing
standards is obligatory.
Fig.120
MW-5000132-5
Fig.121
MW-5000750-1
11 Maintenance
104
AWHP-2 iMPI
7685645 - v04 - 07032018
