Rectify interference
6 720 643 196 (2010/02)
14
2.3.7 Low heat transfer fluid (coll.) in
Description: The heat transfer fluid (coll.) temperature on the incoming heat transfer (coll.) fluid is below the
set protection value (-8 °C). Resets automatically when the temperature has risen 1K.
Check Action
1. B Start the heat transfer fluid (coll.)
pump in the manual operation menu.
B Compare the value on T10 in the info
menu with one from a separate digital
thermometer.
Do the values correspond?
yes: Æ 2
no: B Replace sensor T10.
2. Is the value above -7 on T10? yes: Æ 3
no: Æ 4
3. B Replace control board.
Does the error message recur?
yes: Replace I/O card.
no:
4. There is not enough energy in the heat
absorbing system. This can occur in
extremely cold weather conditions.
Tab. 7
6 720 643 196-06.1I
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