Section 10: ServicingPage 52
10.1 General
Grant Aerona³ Heat Pumps require only the minimum of routine servicing and
maintenance.
This should be carried out by a trained and compentent person, who should
have complete the service log each time fully.
Heat pump - check:
• Visual condition of the heat pump
• Any debris/obstructions for the evaporator fins – remove if found
• Remove by comb or foam based cleaner - do not attempt to do
this manually
• The fan outlet is not obstructed - remove if found
• Condensate drain opening is clear
• Flexible hose condition
• Pipe insulation condition
• Remote controller settings
• That no refrigerant is leaking
• All electrical connections and PCB for scorching or dry cables
• If the Aerona³ heat pump is installed within 10km of the coast, the
evaporator must be sprayed with AFC50 and this repeated on each
annual service.
Heating system - check:
• Expansion vessel pressure
• Operation of pressure relief valve
• Heating system pressure – top up if necessary
• Correct concentration of corrosion/antifreeze protection
• Heating and hot water controls settings
• Any leaks on system
• For any sign of leakage from the refrigerant circuit - refer to Section
10.6.
• Magnetic filter is cleaned
Master Reset (resetting all parameters to their defaults)
All parameters can be reset to their original defaults. The procedure is as
follows:
1. Press the Menu l and the – and + o buttons on the remote controller
simultaneously for three seconds to enter the installer level.
2. Press and hold the low tariff/night mode (key lock) m button for ten
seconds. All parameters will now be reset.
3. To return to normal operation, press and hold the Menu l and the – and
+ o buttons simultaneously for three seconds, or simply leave the remote
controller for ten minutes. Please note that after the master reset has been
used, any parameter that were adjusted durning commissioning would
be lost.
10.2 Air Inlet and Outlet
The air inlet grille and evaporator must be checked and leaves or any other
debris removed from the space between the grille and the evaporator fins.
Ensure that both the air inlet to the evaporator and the discharge from the fan
outlet are unobstructed. Any foliage, plants, etc. near the heat pump must not
be allowed to grow over the heat pump.
Under no circumstances should anything be stacked on or against the heat
pump.
Refer to Section 3.5.2 for the required clearances around the heat pump.
10.3 Condensate Disposal
Check that the condensate drain hole in the bottom of the heat pump is not
blocked.
10.4 Heating System Connections
Check the condition of the flexible hoses. Replace if damaged or leaking.
10.5 Heat Pump Controls
Check that settings on the remote controller are as set when commissioned.
Refer to settings given in the relevant sections of these instructions. Reset to
commissioned settings if necessary.
10.6 Refrigerant
Under no circumstances should the refrigerant be vented from the charging
points on the refrigerant circuit of the heat pump.
If any work is required to be carried out on the refrigerant circuit, it MUST be
undertaken by an F-gas registered refrigeration engineer
On no account should any such work be carried out by unqualified personnel.
10 SERVICING
Take care not to damage or distort the Alumin-
ium fins of the evaporator when removing any
debris.
CAUTION
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