Operating Instructions 15
Fault Possible cause Repairement
Overload tripped Resetting of overload
Current of the specifi c Testing of current (ampere),
part too high replace defect part
Burnt or broken cable Repair broken cable
Loose connection Tighten all contacts and terminals
Insuffi cient power supply Test power supply
Option:
Flow switch tripped
Flow switch dirty Clean fl ow switch
Flow switch defect Replace fl ow switch
Pump defect Replace pump
Pump rotation - Testing of correct pump rotation,
wrong way around see arrow on pump
Fluid (water, emulsion, oil) Testing of suffi cient fl uid in system
level too low and damaged or clogged up piping
Option Test the setting of the
Anti-freeze Anti-freeze thermostate
thermostat Fluid (water, emulsion, oil) Testing of correct temperature
temperature too low setting on controller
controller defect
Option:
fl oat switch tripped Water level in tank too low Testing of waterlevel, refi lling of tank
Float switch defect Replace fl oatswitch
(parts are identifi ed on the wiring diagram)
5 FAULT DIAGNOSIS
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