Rectify interference
6 720 643 196 (2010/02)
17
2.3.11 T81 (pool control)
Check Action
1. B Check the sensor's temperature value
under Temperatures.
Does the display show -52.1 or 195?
yes: Open circuit or short-circuit in the sensor. Æ 2
no: Æ 3
2. Does the display show -52.1? yes: Open circuit in the sensor or connection.
B Check the wiring to the sensor.
Does the error message recur? Æ 3
no: Short circuit in cable or sensor.
B Check the wiring to the sensor.
Does the error message recur? Æ 3
3. B Disconnect the sensor.
B Check the resistance and compare
with the table.
Do the values correspond?
yes: Æ 4
no: B Replace the sensor.
Does the error message recur? Æ 4
4. B Check conductive pathways on the
pool circuit board.
Are the conductive pathways damaged?
yes: B Replace pool circuit board.
Does the error message recur? Æ 5
no: Æ 5
5. B Check the CANbus connections
between the circuit boards.
Is the wiring OK?
yes: Æ 6
no: B Replace the wiring.
Does the error message recur? Æ 6
6. Logic error in the control board. B Replace control board.
Tab. 11
6 720 643 196-09.1I
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