INSTaLLaTION
Troubleshooting
www.stiebel-eltron.com
WPL 15 IKS | WPL 25 IK |
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15.2 Resetting the high limit safety cut-out
If the heating water temperature exceeds 85 °C, the electric emer-
gency/booster heater shuts down.
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85
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1 High limit safety cut-out reset button
Electric emergency/booster heater
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Remove the cause of the fault.
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Reset the high limit safety cut-out by pressing the reset but-
ton. To do so, use a pointed object.
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Check whether the heating water is being circulated at a suf-
ficient flow rate.
15.3 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. If the fan
comes into contact with this ice, noise develops.
How to remedy rhythmically scratching or grinding noises:
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Check whether the condensate drain is free from obstruction.
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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.
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Carry out a manual defrost, repeatedly if required, until the
fan runs free again. For this, please take the „MAN DEFROST“
parameter into account.
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At outside temperatures above + 1 °C, switch the appliance
off for around 1 hour or switch it over to emergency mode.
After this, the ice should have melted.
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Check whether the appliance is installed in line with the ins-
tallation conditions.
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If the noises occur frequently, notify customer support.
