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Rectify interference
6 720 643 196 (2010/02)
8
9.
B
Check sensors T3, T8 and T9.
B
Compare the correct table value (ohm
measurement) with the measured
temperature from an external ther-
mometer (accurate).
Do they correspond?
yes:
Æ
10
no:
B
Check whether the sensor is correctly positioned.
Correct if necessary. If that didn’t help, replace
the sensor.
Does the error message recur?
Æ
10
10.
B
Manually operate the three-way valve.
Does it react?
yes:
Æ
11
no:
B
Check the connections, Do4 and Do4(L) against
zero.
In activated mode it must be 230V against zero.
Does the error message recur?
Æ
11
11.
B
Remove the motor. Use pliers to move
the valve stem in and out.
Does it move easily?
yes:
B
Reinstall the motor (manually operate it to allow
the motor to engage in the valve stem)
Æ
12
no:
B
Replace valve/insert.
Does the error message recur?
Æ
12
Description: Too high pressure in the cooling circuit. Automatic resetting of the pressostat, which must be
acknowledged in the display.
Check
Action
Tab. 3
6 720 643 196-02.1I
Summary of Contents for X Series
Page 1: ...Fault tracing tree X11 X15 6 720 619 265 18 1I 6 720 643 196 2010 02 ...
Page 26: ...6 720 643 196 2010 02 26 Notes ...
Page 27: ...6 720 643 196 2010 02 27 ...
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