INSTALLATION
Appliance shutdown
18 | WPE-I H(K) 230 Premium www.stiebel-eltron.com
13. Appliance shutdown
!
Material losses
Never interrupt the heat pump power supply, even out-
side of the heating season. Otherwise, system frost pro-
tection is not guaranteed.
The heat pump manager automatically switches the heat
pump to summer or winter mode.
!
Material losses
Observe the temperature application limits and the
minimum circulation volume on the heat consumer
side (see chapter "Specification/ Data table").
13.1 Standby mode
To shut the system down, simply set the heat pump manager to
"Standby mode". This way, the safety functions that protect the
system remain enabled, e.g. frost protection.
13.2 Power interruption
If the system is to be isolated from the power supply permanently,
please observe the following:
!
Material losses
If the heat pump is completely switched OFF and
there is a risk of frost, drain the system on the water
side.
14. Troubleshooting
WARNING Electrocution
Before working on the appliance, isolate it from the
power supply at the terminal area.
Following disconnection from the power supply, parts of
the appliance may remain energised for 5minutes until
the inverter capacitors have discharged.
Note
Please observe the instructions for the heat pump
manager.
Note
The following inspection instructions may only be carried
out by a qualified contractor.
Note
When you open the appliance, check the sealing tape.
The sealing tape is required for generating the necessary
negative pressure.
Replace the sealing tape if required.
Note
The built-in fan must generate a negative pressure of at
least 30Pa.
Check the negative pressure with a barometer on
the back of the appliance.
14.1 Resetting the high limit safety cut-out
If the heating water temperature exceeds 95°C, the electric emer-
gency/booster heater shuts down.
Remove the cause of the fault.
D0000036150
Reset the high limit safety cut-out by pressing the reset but-
ton. If necessary, use a pointed object to do this.
Check whether the heating water is being circulated at a suf-
ficiently high flow rate.
14.2 Resetting the compressor tempering device
If the hot gas temperature exceeds 120°C, the compressor shuts
down.
D0000036348
1
1 tempering device reset button
Isolate the appliance from the power supply.
Remove the cause of the fault.
Note
Do not reset the high limit safety cut-out at tempera-
tures above 65°C.
Reset the high limit safety cut-out by pressing the reset but-
ton.
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