28
Z.1 Malfunctions with error messages
If the controller detects a malfunction, the red light
fl
ashes and the warning symbol also appears in the
display. If the error is no longer present, the warning
symbol changes to an info symbol and the red light
no longer
fl
ashes.
To obtain more detailed information on the error,
press the key under the warning or info symbol.
Possible error messages:
Sensor x defective
Time&date
Temperature < 50
Temperature > 70
Notes for the specialist:
Means that either the sensor, the sensor input at the
controller or the connecting cable is/was defective.
(Resistance table on page 5)
This display appears automatically after a mains
failure because the time&date have to be checked,
and reset if necessary.
The temperature at the optional sensor S4 fell below
50 °C.
This means that the primary temperature is too low,
so it could be possible to produce not enough hot
water
The temperature at the optional sensor S4 excee-
ded 70 °C.
This means that the primary temperature is too
higth, so it is possible to have limescale in the
exchanger
((LED
fl
ashes +
warning symbol)
Do not try to deal with this yourself.
Consult a specialist in the event of an error!
Danger
Malfunctions
Summary of Contents for FWC3
Page 31: ...31 Notes...
