INSTALLATION
Troubleshooting
44 | WPF basic www.stiebel-eltron.com
Relay test:
Test all relays in the WPMiw
Analysis:
System analysis for checking all existing BUS subscribers
Reset HP:
Heat pump reset to clear all saved faults.
WPMiw reset options
Reset by turning the rotary selector from Auto to Reset and back
again. All system-specific programs remain intact. The fault list
will not be deleted.
Reset by turning the rotary selector from Auto to Reset and back
again while holding down the PRG key. The display must show
EEPR (EEPROM hardware reset). The WPMiw is reset into the de-
livered condition. The fault list will be deleted.
After a hardware reset, if the control flap is closed, NO HEAT P
PARA is displayed.
The heat pump type must be re-entered.
When the control flap is opened, HEAT PUMP is displayed. After
pressing the PRG button, the heat pump type can then be selected
using the rotary selector. The heat pump type must be confirmed
by pressing the PRG button.
Note
The heat pump type can be found on the type plate.
The parameter SINGLE PHASE must be returned to ON on single
phase appliances.
13.2 Resetting the high limit safety cut-out
If the heating water temperature exceeds 85°C, the electric emer-
gency/booster heater shuts down.
1
2
26�03�01�1893
1 Electric emergency/booster heater
2 High limit safety cut-out reset button
Remove the cause of the fault.
Reset the high limit safety cut-out by pressing the reset but-
ton. To do so, use a pointed object.
Check whether the heating water is being circulated at a suf-
ficient flow rate.
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