English
32 WILO SE 01/2009
12.2 General faults in operation
Faults in operation can make themselves felt
through a variety of symptoms. They affect the
performance of the unit. .
If the operating fault cannot be remedied,
please consult a specialist technician or the
nearest Wilo after-sales service point or
representative.
12.2.1 Resetting fault signals
Once the fault has been remedied, the fault sig-
nals must be reset so that the unit will resume
operation.
Deleting the fault signals for back pressure at
overflow (4.03), alarm level (4.06) and tank
overflow (4.08)
• Remedy the cause of the fault
• Enter password 02
The display briefly shows: > select operational
mode <.
• In menu 4.00, delete the fault with the OK button.
• Go back to the main menu via menu 4.99.
• Switch the switchgear back to automatic operat-
ing mode by entering password 00.
Deleting the fault signals for dry running (4.01),
switching frequency (4.02) and max. pump time
(4.07)
• Remedy the cause of the fault
• Reset the fault signal with the confirmation but-
ton .
Deleting the fault signals for water level sensor
(4.04) and pressure sensor (4.05)
• Remedy the cause of the fault
• The fault is reset automatically.
13 Spare parts
Spare parts may be ordered via local specialist
retailers and/or Wilo after-sales service.
To avoid queries and order errors, please supply all
data on the unit name plate with every order.
Subject to change without prior notice!
Faults Causes Remedy
Pump not running • No power supply. • Check fuses, connections and supply
line.
Pump providing no output or too little
output
• Air is getting into the suction pipe. •Seal the suction pipe.
• Suction head exceeding the maximum. • Check the water level.
• Air in the pump. • Bleed the pump/unit.
• The filter is blocked. • Clean the foot valve.
Pressure too low • The suction head is too high. • Check the water level.
• Foot valve blocked. • Clean the foot valve.
Pump keeps switching off and on
• Small leakages or non-return valve in
FluidControl no longer closing.
• Block off the pressure pipe in some
way in order to find the fault. Remedy
the fault.
Pump leaking
• The mechanical shaft seal is faulty. • Change the mechanical shaft seal.
• Tighten screws on the stage housing.
Potable water replenishment although
rainwater tank is full
• Level sensor dirty or faulty.
• Sensor cable incorrectly installed
(equalising capillary is closed off).
• Clean the level sensor or replace it.
• Check the cable connection and rout-
ing for pinch points.
Pump does not switch off
• System is reaching only a pressure
(actual pressure) above 1 bar and
below the start-up pressure. It is oper-
ating off its pump curve.
• Contact Wilo after-sales service.
Float valve in replenishment reservoir
does not switch off / water is escaping
through overflow
• Float valve pulled out of position or
mechanically blocked.
• Visual inspection; if necessary improve
the support for the supply line or clean
the tank or valve.
Fault signal “Please check Hardware
config.” on the display screen of the RCE
• Jumper in the rear panel of the RCE's
display board (see Fig. 9) for correct
identification of the pump type is not
firmly in place or is missing.
• Contact Wilo after-sales service.
To Next Page
Loading...
