Rectify interference
6 720 643 196 (2010/02)
12
8. B Check the temp. setting.
B Check set point value on T1.
Is it higher than 65 °C?
yes: B Adjust the temperature setting.
Does the error message recur? Æ 9
no: Æ 5
9. B Go to temperatures and check the
value on T2.
B Use a digital thermometer and meas-
ure at the T2 sensor.
Do the values correspond?
yes: Æ 10
no: B Check the cable to T2, it must not be together
with the power cable.
B Replace the sensor if necessary.
Does the error message recur? Æ 10
10. Is the room sensor connected? yes: Æ 11
no: Æ 13
11. B Go to temperatures and check the
value on T5.
B Use a digital thermometer and meas-
ure at the T5 sensor.
Do the values correspond?
yes: Æ 12
no: B Replace sensor.
Does the error message recur? Æ 13
12. B Check the settings of the room sensor.
Does the room sensor have a high effect
or set point value?
yes: B Adjust to the permitted values.
Does the error message recur? Æ 13
no: Æ 13
13. Logic error. B Replace control board.
Does the error message recur?
B Replace I/O card.
Description: The set value in Max limit heating system temperature +2K.
Check Action
Tab. 5
6 720 643 196-04.1I
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