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2468CB & 2468CD Dual Power Supply Version Hydrastep 2468CB and 2468CD Manual
2-28 24685034
Indication Fault(s) Analysis and Corrective Action
State 5 (contd.)
Integral circuit fault
on right hand circuit
board or the display
board
If the wiring checks carried out as described above
have not located the fault, then it is possible and
internal fault exists.
1. Disconnect the electrode cable sockets from the
input boards.
2. Make up four 10-way sockets (six or eight sockets
required for systems with more than 16 points) with
wire links connecting the following pins on each
socket: 1-2, 4-5, 6-7, 9-10.
3. Insert these sockets in place of the electrode cable
sockets in the input boards. The level display
should now show an all steam state and no fault
indication. If this does not occur an internal fault
exists.
The circuit fault may be on either input board or the
display board. If spares are available, change the right
hand input board first and if the fault is not rectified
change the display board, followed by the left hand
input board. If spares are not available, call the service
engineer.
State 6
Bottom half of
fault LED
illuminated
No LED pairs
alternating
between water
and steam
Internal circuit fault
on right hand circuit
board or the display
board
This state is indicating a fault which is not related to an
electrode error because no LED pairs are alternating
between water and steam. It is therefore likely that an
internal fault exists.
Follow same procedure as above.
Table 2.3 - Fault analysis/corrective action chart (continued)