Translation of the Original ENGLISH MALFUNCTIONS / TROUBLESHOOTING
454522.68.07-01-E
43
27.06.2012
Fault Display Malfunction / Cause Remedy
F10
Fault message
Digital Fault input E7
Check filling pressure
Flow control switch has tripped
- Leaks in water circuit
Check water circuit for leaks, top up
water up to the MAX. mark
- Pump defective Check pump, replace if necessary
Move motor protecting switch to
position 1-
- Flow control switch defective Check flow control switch, replace if
necessary
- Shut-off valve closed Check all shut-off valves
F11
- Water pressure too low Increase water pressure
F12
Sensor F4
Temperature alarm
Temperature limit values exceeded
- Water temperature too high
Allow water to cool. or replace
sensor, correct/reset any additional
malfunctions that may be signalled
F13
Sensor F4
Temperature alarm
Temperature limit values exceeded
- Water temperature too low
Increase water temperature,
correct/reset any additional
malfunctions that may be signalled
F19
Sensor F2
Broken sensor or short circuit
- Defective sensor
Check sensor, replace if necessary
F20
Sensor F3
Broken sensor or short circuit
- Defective sensor
Check sensor, replace if necessary
F21
Fühler F4
Broken sensor or short circuit
- Defective sensor
Check sensor, replace if necessary
F23
Eeprom error
During operation, parameters are
permanently checked in the controller
for consistency.
Any error in this memory is indicated
by a general fault alarm. Although the
controller continues to operate, it
must be replaced without delay.
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