Troubleshooting
This chapter provides solutions to the most common problems. If you have a problem that
you cannot solve using the information in this chapter, please contact your dealer.
Troubleshooting - general
Certain activities may only be performed by authorised installers/service engineers because
they require specialist knowledge and skills. These activities are indicated by "Priva Partner"
in the table below.
The unit does nothing (page 31)
The system pump does not start (page 31)
The system pump runs dry (page 32)
No water is entering the unit (page 32)
NutriJet Bypass: EC control is unstable (page 32)
NutriJet Bypass: The EC value deviates significantly (page 32)
NutriJet Bypass: The pressure on the pressure reducing valves in the incoming line is too low (page 32)
During the production of irrigation water, the pressure on the line to the venturis is too low (page 33)
NutriJet Bypass: The suction pressure on the line after the mixing chamber is too low or too high (page 33)
A fertiliser, acid or lye is not being dosed (page 33)
The desired EC value is not being achieved (page 34)
The EC value swings wildly and ‘overshoots’ (page 34)
The desired pH value is not being achieved (page 34)
The pH value swings wildly and ‘overshoots’ (page 35)
EC alarm or pH alarm (page 35)
Flow alarm (page 35)
The plants receive more water than is set (page 35)
Some irrigation valves no longer open (page 36)
The measured fertiliser concentrations do not match the recipe (page 36)
The unit does nothing
The unit is not doing anything (the display (if fitted) is also not functioning).
SolutionPossible cause
The electrical supply is off.
• Ensure that the unit is connected and the main
switch is set to On.
• Ensure that the external emergency stop (if fitted)
is not depressed.
• Ensure that the fuse group to which the unit is
connected is switched on.
• Priva Partner: reset the circuit breaker in the
cabinet.
The power supply to the unit is defective.
• Priva Partner: check the internal fuses.
• Priva Partner: replace the power supply.
Priva Partner: determine which circuit is defective and
replace it.
An internal circuit is defective.
The system pump does not start
The system pump fails to start (the display - if fitted - is functioning).
31NutriJet - user - 00.002
Troubleshooting
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