Corrosion Protection Anode; Faults / Troubleshooting (For The User); Decommissioning; Environmental Requirements - Dimplex DHW 300 Instructions De Montage Et D'utilisation

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8.3 Corrosion protection anode

The corrosion protection anode (Fig. 8.1) installed in the do-
mestic hot water cylinder should be electrically checked on a
regular basis, at least every two years after commissioning, and
be replaced if necessary. Electrical checking is carried out by
means of a suitable ammeter, without draining the cylinder.
Procedure:
1) Unplug the PE cable from the protection anode tab.
2) Connect the ammeter (0 to 50 mA) between the PE cable
and the tab.
3) Evaluation of wear on the protection anode:
Measured value > 1 mA ? protection anode is in working
order.
Measured value < 1 mA ? protection anode must be tested
and/or replaced.
If electrical testing does not provide any clear results, a visual
inspection of the protection anode by a technician is recom-
mended.
Should replacement of the protection anode [by a technician]
be necessary, the cylinder must be drained via the drain valve
provided (to be fitted during installation - see Appendix).
NOTE
Malfunctioning protection anodes reduce the service life of
the device!
(Electrically insulated magnesium anode with selenium
complying with DIN 4753 part 6)
Fig. 8.1:Anode electric heater
EN-14
9 Faults / troubleshooting (for
the user)
CAUTION!
Work on the domestic hot water heat pump is to be performed
by qualified personnel only!
Observe accident prevention regulations!
Check the following:
 the plug is plugged in
stand-by mode has been selected on the keyboard

 the socket is supplied with voltage
the air inlet temperature or ambient temperature is  7 °C

 the domestic hot water temperature is over 60 °C
The heat pump switches off prematurely (set
temperature has not yet been reached)
Check the following:
 air ducts have been bent or their openings have been
sealed, or whether any air filters are heavily contaminated
(clogged).
Condensate cannot drain properly (there is water
under the device)
Check the following:
 The seal valve in the end of the condensate hose is con-
taminated or clogged, and clean if necessary; the valve can
be easily removed and replaced.
 the inflow and outflow of air is significantly reduced (bent
air duct / clogged air filter).
If the above suggestions cannot help you eliminate these faults,
please contact your technician or after-sales service partner.

10 Decommissioning

Tasks to be carried out:
 Disconnect the domestic hot water heat pump from the
power supply.
Completely shut off the water circuit (domestic hot water,

cold water and circulation pipe) and drain the domestic hot
water cylinder.
11 Environmental
requirements
During maintenance or decommissioning of the domestic hot
water heat pump, all environmental requirements regarding re-
covery, recycling and disposal of materials and components
must be observed in compliance with DIN EN 378.
451905.66.01a · FD 0102
DHW 300 - DHW 300+
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