VS65 SERIES MV SOFT STARTER
Fault F22 CUR FLT
Description Large current unbalance is occurring among phases.
Possible Cause Large current unbalance occurs due to a sudden voltage drop in any of the VS65
input phases. Possible disconnection of one phase.
Action Check input power wiring. Check motor connection. Check supply voltage is
correct.
Fault F23 CUR FLT 2
Description Large current unbalance is occurring among phases.
Possible Cause Large current unbalance occurs due to a sudden voltage rise in any of the VS65
input phases.
Action Check input power wiring. Check supply voltage is correct.
Fault F24 HIGH PRESSURE
Description High pressure time protection.
Possible Cause The VS65 is running and the pressure switch opens for longer than the time
entered in screen G16.4. Overpressure.
Action Check hydraulic installation. Check pressure switch. Check proper wiring from
pressure switch to VS65 digital input 1. The VS65 will require resetting on the
display or via D INPUT 5 if configured for 2 wire start/stop. Check parameter
setting is done according to application requirements.
Fault F25 LOW PRESSURE
Description Low pressure protection.
Possible Cause The VS65 is running and the pressure switch opens for longer than the time
entered in screen G16.5.
Action Check hydraulic installation (broken pipes). Check pump has got water. Check
pressure switch. Check proper wiring from pressure switch to VS65 digital input 2.
The VS65 will require resetting on the display or via D INPUT 5 if configured for 2
wire start/stop. Check parameter setting is done according to application
requirements.
Fault F26 FLOW SWITCH
Description No flow protection.
Possible Cause The flow switch is ignored for the time set in screen G16.7 on receipt of a valid
start signal. After this time the VS65 will trip if no flow is indicated for longer than
the time set in screen G16.8. No water in the pump.
Action Check proper pump water supply. Check flow switch. Check proper wiring form
flow switch to VS65 digital input 3. The VS65 will require resetting on the display
or via D INPUT 5 if configured for 2 wire start/stop. Check parameter setting is
done according to application requirements.
Fault F27 DEEP WELL PROBE
Description Low level protection
Possible Cause The well probe controller (or other level controller) detects a lack of water. The
tank or pump has no water.
Action Check water level. Check hydraulic installation. Check level switch. Check proper
wiring from deep well probe flow controller to VS65 digital input 4. The VS65 will
not reset unless the low water fault has been cleared (D INPUT 4 closed). Check
parameter setting is done according to application requirements.
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