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8.3
Sacrificial Anode
The sacrificial anode rod installed in the hot water tank for corrosion protection purposes must be checked
electrically on a regular basis - at least every two years - after commissioning and be replaced, if neces-
sary. The electrical check is to be conducted by means of a suitable ammeter without draining the water in
the tank.
Procedure:
n
Withdraw PE conductor from tab of sacrificial anode.
o
Connect ammeter (0...50 mA) between PE conductor and tab.
p
Evaluation of wear of sacrificial anode:
Measured value > 1 mA
➪
sacrificial anode is okay.
Measured value < 1 mA
➪
sacrificial anode must be checked or replaced.
If an unambiguous electrical check is not possible, we recommend that a visual inspection of the sacrificial
anode be performed. For a replacement of the sacrificial anode that may be necessary [to be performed by a
qualified technician], the water must be drained from the storage tank via the drain valve (to be provided upon
installation – see appendix.
Caution: Sacrificial anodes that are impaired in their function will reduce the life of the unit!
9.
Malfunctions / Troubleshooting
( intended for the user )
Caution!
Work on the heat pump water heater may only be performed by qualified persons!
Accident prevention regulations must be adhered to!
Heat pump fails to run!
Please check that
Ö
Ö
Ö
Ö
the plug is plugged in
Ö
Ö
Ö
Ö
the power switch is switched on
Ö
Ö
Ö
Ö
voltage is present at the wall outlet
Ö
Ö
Ö
Ö
the air intake temperature is
≥
8°C
Ö
Ö
Ö
Ö
the heat pump was not switched off by the thermostat
Ö
Ö
Ö
Ö
the hot water temperature has not reached or exceeded 55°C
Heat pump switches off prematurely
(setpoint temperature has not been reached yet)
Please check whether
Ö
Ö
Ö
Ö
ventilation ducts are kinked or their openings closed, or
air filters that may be provided are severely contaminated (clogged)
Condensate fails to drain (
water present at or under the unit
)
Please check whether
Ö
Ö
Ö
Ö
the sealing lip valve at the end of the condensate hose is contaminated or
clogged; clean it, necessary. The valve can be easily removed and rein-
stalled.
Ö
Ö
Ö
Ö
#
#
#
#
the air supply / air discharge rate is greatly reduced
(kinked airduct / clogged air filter)
If the malfunction cannot be corrected based on the above questions, please consult your installer or
customer service.