Wilo SiFire, Installation And Operating Instructions Manual

Page: 32 / 38

English
46 WILO SE 10/2013
Engine does not start or try to start, then
stop Unloaded batteries Check battery and loader of battery.
Load battery and replace them if neces-
sary
Lack of fuel If it is not indicated on the control panel
indicating light, check the fuel tank and
alarm float. Replace.
Replace the tank.
Air in fuel circuit Remove air from circuit by draining the
injectors and diesel fuel strainers.
Dirty fuel strainer Replace.
Dirty air strainer Replace.
Fuel circuit failure : injectors blocked,
injection pump failure Call customer service centre.
Too low temperature Check that ambient temperature is not
less than 10
° C. Then check the correct
working of oil/water heater.
Replace.
Loosened or rusty connections between
battery/starter/relay Check cables and terminals.
Re-wire. Correctly tighten
Replace.
Diesel pump control panel failure Check and replace if necessary
Starter failure Call customer service centre.
Black smoke Dirty/blocked air strainer Replace.
Too high oil level Remove oil excess.
Problem with injector, fuel pump, etc. Call customer service centre.
Unusual heating – too high water/oil
temperature Pump overload (frictions) Dismantle and check.
Coupling out of axis Align correctly.
Ambient temperature higher than 40°C Ventilate the space.
Insufficient ventilation Check filters and ventilation grille. Clean
or resize.
Dirty or blocked radiator/coolant Dismantle and clean.
Lack of water in radiator/heat exchanger After the cooling, fill with water and
check for if leaks are present.
Closed or not open enough heat
exchanger circuit valve Check that pump has a water flow, then
open the butterfly valve.
Water circulation pump failure Call customer service centre.
Fan belt failure (air-cooled engines) Check voltage and replace if necessary.
Corresponding alarm failure Check sensor, connections and control
unit on control panel. Replace if neces-
sary.
Jockey pump does not start No power supply Check connections and the electric
panel.
The pressure switch is calibrated to a
lower pressure than the main pump. Check the pressure switch settings.
Short-circuit in winding Check winding.
Intervention of the thermal protection Check the sizing of the supply line.
Check that the pump is not locked, then
check pressure switch setting and the
tank inflation.
Control box failure and wrong connec-
tions Check.
Faults Causes Remedy