43
Maintenance
PROBLEM
CAUSE
SOLUTION
Display off
- No voltage
- Check the input voltage with a
voltmeter
- The thermomagnetic circuit
breaker has tripped
- Check for short circuit
Short Circuit
AL-1
- Unstable input voltage
Install a voltage stabilizer
- Bad contact in power connector - Check the electronics power
connectors
- Internal short circuit
- Contact ITC technical service
- Blocking of the pump due to
overpressure or mechanism fault
- Check for any closed valve in the pump
delivery piping
- Check that the mechanism rotates
freely
Overt Temp /
Thermal Shutdown
AL-2
- Ambient temperature higher
than allowed (45 °C)
- Condition the work area to ensure
temperature conditions within the
tolerated range
- The pump is working with
overpressure
- Check that the line pressure is lower
than the maximum allowable pressure
of the unit
- Incorrectly dimensioned
delivery pipe
- Shorten the delivery pipe or increase
its diameter
Overload
AL-3
- The pump is working with
overpressure
- Check that the line pressure is lower
than the maximum allowable pressure
of the unit
- Incorrectly dimensioned
delivery pipe
- Shorten the delivery pipe or increase
its diameter
- Connection fault between the
motor and the electronics board
- Check the connections between motor
and electronics
Voltage out of range
AL-5
- Supply voltage outside the
allowed range
- Correct the input voltage so that it is
within the allowed range
TROUBLESHOOTING: POSSIBLE CAUSE AND SOLUTION
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