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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
Measured value < 1 mA
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
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
Heat pump switches off prematurely
Please check whether
Condensate fails to drain (
Please check whether
If the malfunction cannot be corrected based on the above questions, please consult your installer or
customer service .
sacrificial anode is okay.
sacrificial anode must be checked or replaced.
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
the air intake temperature is ≥ 8°C
Ö Ö Ö Ö
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
(setpoint temperature has not been reached yet)
Ö Ö Ö Ö
ventilation ducts are kinked or their openings closed, or
air filters that may be provided are severely contaminated (clogged)
water present at or under the unit
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)
( intended for the user )
)
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