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Maintenance and service
Installer reference guide
249
EPRA14~W1 + ETSH/X(B)16P30+50EF
Daikin Altherma 3 H HT ECH₂O
4P679467-1 – 2022.02
13.3 Yearly maintenance
13.3.1 Yearly maintenance outdoor unit: overview
Check the following at least once a year:
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Heat exchanger
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Water filter
13.3.2 Yearly maintenance outdoor unit: instructions
Heat exchanger
The heat exchanger of the outdoor unit can get blocked up due to dust, dirt,
leaves, etc. It is recommended to clean the heat exchanger yearly. A blocked heat
exchanger can lead to too low pressure or too high pressure leading to worse
performance.
Water filter
Close the valve. Clean and rinse the water filter.
NOTICE
Handle the filter with care. To prevent damage to the mesh of the filter, do NOT use
excessive force when you reinsert it.
1 3
2
13.3.3 Yearly maintenance indoor unit: overview
DANGER: RISK OF BURNING/SCALDING
The water in the storage tank and all the connected piping can be very hot.
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Water pressure
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Magnetic filter/dirt separator
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Water pressure relief valve
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Relief valve hose
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Switch box
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Storage tank water level
13.3.4 Yearly maintenance indoor unit: instructions
Water pressure – Space heating/cooling circuit
Keep water pressure above 1 bar. If it is lower, add water.
