10.4 Maintenance of the outdoor unit
10.4.1 Checking the cooling circuit
1. Power off the thermodynamic water heater before any interventions
on the appliance.
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.
Wait a few minutes before carrying out any operations on the
refrigerant circuit.
2. Check the tightness of the connections using a leak detector.
3. Check the performance of the heat pump.
4. Check the temperatures.
5. If refrigeration connections have to be disconnected, the refrigerant
fluid should be collected.
10.4.2 Clean the fan and evaporator
Clogging by dust and other particles impairs the heat pump's performance.
Check the cleanliness of the outdoor unit fan once a year.
1. Power off the thermodynamic water heater before any interventions
on the appliance.
The fan will continue to run for approximately one minute, due to
inertia.
2. Remove the front panel of the outdoor unit.
3. Clean the outdoor unit fan using a soft bristled brush or a compressed
air nozzle.
4. Realign the fins using a suitable comb if they are bent.
Danger
Risk of injury on the sharp-edged fins.
Caution
Do not distort or damage the fins.
5. Put the front casing back.
10.4.3 Recover the refrigerant fluid in the outdoor unit
The refrigerant must be recovered during standard replacements or when
recycling the external unit.
1. Go to the advanced operating mode by simultaneously pressing the
and keys for 3 seconds.
2. Select the parameter which corresponds to Cold mode by pressing
the key several times.
3. Confirm cold mode by pressing the key.
4. Recover the refrigerant from the external unit in accordance with
industry codes of practice.
10.5 Maintenance of the domestic hot water tank
10.5.1 Draining the domestic hot water tank
Certain operations will make it necessary to drain the domestic hot water
tank.
1. Power off the thermodynamic water heater before any interventions
on the appliance.
2. Turn on a hot water tap.
3. Open the valve on the safety unit.
10 Maintenance
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