22
Subject to change without notice | 83056600dUK – Translation of the original operating manual | ait-deutschland GmbH
11 Maintenance
NOTE
We recommend that you sign a maintenance
agreement with an accredited heating
company.
11.1 Basic principles
The cooling circuit of the heat pump requires no
regular maintenance.
Local regulations – e.g. EU Regulation (EC) 842/2006
– among other things, require leak checks beforehand
and/or for a logbook to be kept for certain heat pumps.
The hermetic tightness and refrigerant fill quantity are
criteria for whether a logbook has to be kept and leak
tests performed or not, and at what time intervals.
►
Ensure compliance with local regulations with
regard to the specific heat pump system.
11.2 Maintenance as required
● Checking and cleaning the components of the
heating circuit and the heat source, e.g. valves,
expansion vessels, circulation pumps, filters, dirt
traps
● Checking the function of the safety valve (on site)
for the domestic hot water tank and the safety
valve for the heating circuit
11.3
Clean and flush the evaporator
and condenser
► Clean and flush the evaporator/condenser strictly
according to the manufacturer's regulations.
► After flushing the evaporator/condenser with
chemical cleaning product: neutralise any
residues and flush the evaporator/condenser
thoroughly with water.
11.4 Yearly maintenance
►
Record the quality of the heating water analytically.
In case of deviations from the specifications, take
suitable measures without delay.
Clean unit variant with SVGW storage tank (SVGW:
Swiss gas and water association (Schweizerischer
Verein des Gas- und Wasserverbands)):
1.
Drain the domestic hot water tank via the drain
valve at the domestic cold water inlet.
2.
Vent the domestic hot water tank and pipes via
the hot water taps in the apartments.
3.
Check the domestic hot water tank and clean via
the cleaning opening on the underside of the tank.
4.
After cleaning and testing, refill the domestic hot
water tank.
5.
Vent the domestic hot water tank and pipes via
the hot water taps in the apartments.
12 Faults
NOTE
If the safety temperature limiter on the
electric heating element has tripped, no fault
is displayed.
►
Read out the cause of the fault via the diagnostics
program of the heating and heat pump controller.
►
Contact the local partner of the manufacturer or
the factory's customer service. Have the fault
message and unit number (
“Unit sticker”,
page 3) to hand.
