Rectify interference
6 720 643 196 (2010/02)
9
12. B Check that the HP switch trips at the
correct value (31 bar).
Requires refrigeration authorisation and
a manometer stand.
yes: Does the error message recur? Æ 13
no: Æ 14
13. B Check the connection to the HP
switch (terminal blocks 1, 2). Measure
the ohmage at the same time to see if
the connection is closed or broken
(tripped).
Did that help?
yes: Does the error message recur? Æ 15
no: Æ 15
14. Faulty HP switch B Replace HP switch.
Does the error message recur? Æ 16
15. B Check the connections between the
terminals (Di3) and the I/O circuit
board.
Was there a fault?
yes: B Rectify the fault.
Does the error message recur? Æ 16
no: Æ 16
16. Is the LED on the I/O circuit board flash-
ing?
yes: B Replace I/O card.
Does the error message recur? Æ 17
no: B Check the CANbus connections and power con-
nections.
Does the error message recur? Æ 17
17. Control logic 1. Replace I/O circuit board 2. Replace control board
3. Replace transformer circuit board.
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
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