INSTALLATION
Troubleshooting
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15.1 Fault code display
If there is an appliance fault, the spanner flashes on the display.
To call up the fault code display, press the "i" button for more
than 5seconds.
Diagnostic traffic
lights (draw-off
mode)
Display shown Fault Cause Remedy
Green flashing, yellow
off, red on
Spanner flashes (fault code
display E1 and spanner)
No DHW
Safety switch not activated during
"Commissioning"
Activate the safety switch by firmly
pressing the reset button
Safety switch was triggered by high
limit safety cut-out
Check high limit safety cut-out (plug-in
connection, connecting cable); activate
safety switch
Safety switch responds again after high
limit safety cut-out has been checked;
high limit safety cut-out faulty
Replace high limit safety cut-out; ac-
tivate safety switch and draw-off with
maximum set value >1min
Safety switch responds again; PCB
faulty
Replace the function module
Green flashing, yellow
off, red on
Spanner flashes (fault code
display E2 and spanner)
No DHW PCB faulty (lead break or short circuit
in inlet sensor)
Replace the function module
Green flashing, yellow
off, red on
Spanner flashes (fault code
display E3 and spanner)
No DHW Short circuit in outlet sensor Check outlet sensor; replace if neces-
sary
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