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44
INSUFFICIENT FLOW ESTABLISHED BY THE PUMP
Logical variable : DSDEBk
Incident codes KP02 : KP07 icon :
Description
Pump k supplying the evaporator has had the operational command for 20 seconds.
The “flow switch” FSE detects insufficient flow in the exchanger for over 25 seconds.
Action
Case ¶ : The unit has one pump only, or no pump (C2POMPE = 0).
F Immediate halt of pump k.
F The fault is displayed on the screen.
F The remote fault report is delayed for 6 minutes.
F 22 seconds before generation of the fault, the machine has been stopped with the fault "insufficient
flow of chilled water" (see page 23).
Case · : The unit has two pumps (C2POMPE = 1).
F Immediate halt of pump k.
F Start-up of the 2nd pump (see chapter "control of evaporator pumps " page 4).
F The fault is displayed on the screen.
F The remote fault report is delayed for 6 minutes.
Resetting
Case ¶ : The unit has no pump (C2POMPE=0 and the flow-switch is closed without POMPEk having the
operational command).
The machine restarts automatically 20 seconds after the flow is restored.
Case · : The unit has one pump (C2POMPE=0).
The machine can only be restarted after a manual reset
Case ¸ : The unit has two pumps (C2POMPE=1).
If the flow is restored within 20 seconds following the start-up command issued to the 2nd pump, the
machine restarts automatically. Otherwise, the unit can only be restarted after a manual reset.
Trouble-shooting Solution
Wiring fault on the control pump.
Wiring fault on the flow controller.
Water filter clogged.
Flow controller wrongly set.
Check the pump connection.
Check the connection on the flow controller.
Clean the water filter.
Adjust the flow controller setting.
(pump 1)
82 (pump 2)
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