0906-E
38
FAULT CODES
INSUFFICIENT FLOW RATE PROVIDED BY THE PUMP
Fault Code: 001 040
Description
Pump k supplying flow rate to the evaporator has been ordered to start for 20 seconds.
The flow switch FSE is detecting insufficient flow rate in the heat exchanger for more than 25 seconds.
Action
Case 1 :
The unit only handles ONE pump
$ Immediate shut down of compressors and pump k.
$ Fault signal 001 is shown on the display.
$ The remote fault signal is delayed by 6 minutes
Case 2
:
The unit handles TWO pumps and the “Normal/ Safety” mode or “Clock” has been activated.
$ Immediate shut down of pump k.
$ Start up of the 2
nd
pump (refer to “EVAPORATOR PUMP(S) CONTROL” section for more details)
$ If the FSE is detecting a flow rate, then the fault 040 is shown on the display, the unit is then running
normally
$ If the FSE does not detect any flow rate the fault 040 is shown on the display, the unit is then shut down
$ The remote fault signal is delayed by 6 minutes
Reset
In all cases implying a shut down of the unit, 3 start up attempts are made then after these three faults per
day the unit can only be restarted by a manual reset
Notes:
Fault counter is cleared and reset every day at 11 am, as long as the maximum number of faults has not
been reached.
Possible causes Solving the problem
Problem in the pump control wiring. Check the pump connections
Problem with flow switch wiring. Check the flow switch connection
Dirty water filter Clean the water filter
Wrong setting of the flow switch Adjust the setting of the flow switch
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