WMF Perfect Ultra Manual Del Usuario página 31

Cause
The ball does not sit correctly in the valve (E).
The ball was forced into the upper chamber.
Residual pressure safety device is blocked.
The timer (12) was removed too early, that is
before the start of the cooking stage.
Timer (12) is not active.
Battery is empty (see battery indicator (23)).
Software fault, requires factory repair by WMF.
If there is a problem, always remove the
pressure cooker from the hob.
Never use force to open!
Rectification
Fully depressurise the pot, open the lid and
remove the handle. Force the ball into the
lower chamber (F) Check the main valve (3)
for moveability (G) and close the pot again.
Using a needle or toothpick, exert downward
pressure into the opening of the residual pres-
sure safety device (15) on the lid cover until the
rotary knob (8) can be pulled backwards.
Place timer (12) on the lid handle (5) and
re-enter the required cooking time.
Switch on timer (12) by means of the plus key
(25).
Replace battery according to the instructions
Hand in timer (12) at an authorized dealership
or send it directly to WMF AG.
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