INSTALLATION
Maintenance
www.stiebel-eltron.com
WPL ICS classic | WPL IKCS classic |
25
17.1.3 Reset button
If the IWS was incorrectly initialised, you can reset the settings
with this button.
f
f
For this, also observe chapter "Reinitialising the IWS" in the
heat pump manager commissioning instructions.
17.2 Resetting the temperature controller
If the heating water temperature exceeds 85 °C, the electric emer-
gency/booster heater shuts down.
f
f
Remove the cause of the fault.
f
f
Remove the side panel (see chapter “Fitting the appliance
casing”).
D
00000
71
61
7
f
f
Reset the temperature controller by pressing the reset but-
ton. If necessary, use a pointed object to do this.
f
f
Check whether the heating water is being circulated at a suf-
ficiently high flow rate.
17.3 Fan noise
The heat pump draws heat from the outdoor air. This causes the
outdoor air to cool down. At outside temperatures of 0 °C to 8 °C,
the air may be cooled to below freezing point. If, under these
conditions, precipitation occurs in the form of rain or fog, ice may
form on the air grille, the fan blades or the air routing pipes. If the
fan comes into contact with this ice, this creates noise.
How to remedy rhythmic scratching or grinding noises:
f
f
Check whether the condensate drain is clear of obstructions.
f
f
Check whether the design output and temperature are set
correctly. Ice formation is particularly pronounced when
a high heating output is demanded at moderate outside
temperatures.
f
f
Carry out a manual defrost, as many times as necessary,
until the fan runs freely again. Observe the information in the
heat pump manager instructions and the “START DEFROST”
parameter in the “COMMISSIONING / COMPRESSOR” menu.
f
f
At outside temperatures above +1 °C, shut down the appli-
ance or switch it over to emergency mode for approx. 1 hour.
After this, the ice should have melted.
f
f
Check that the appliance is installed in line with the installa-
tion requirements.
f
f
If noise occurs frequently, notify the service department.
18. Maintenance
WARNING Electrocution
f
f
Prior to commencing any service or cleaning work,
isolate the appliance across all poles from the
power supply.
Following disconnection from the power supply, parts of
the appliance may remain energised for 2 minutes until
the inverter capacitors have discharged.
!
Material losses
Keep the air discharge and intake apertures free from
snow and ice.
We recommend a regular inspection (to establish the current con-
dition of the system), and maintenance if required (to return the
system to its original condition).
If heat meters are installed, clean their strainers regularly.
f
f
Periodically remove any leaves or other foreign bodies from
the evaporator fins (see chapter "Cleaning the evaporator
fins").
f
f
Check the condensate drain is working correctly. Remove
accumulated dirt if necessary (see chapter "Cleaning the con-
densate pan").
18.1 Cleaning the evaporator fins
Check the evaporator fins for dirt from time to time.
1.
2.
3.
D
00000
73
41
4
1
1 Defrost hose (hose of the pressure differential switch for cap-
turing the end of defrosting)
f
f
Remove the front panel.
f
f
Undo the screws and remove the centre cover panel.
f
f
Undo the screws in the metal rail.
f
f
Remove the lower defrost hose from the guide groove in the
EPS cover.
