Jet MAXI D125 - P1;P2 FAIL Faults; LOW;HIGH H20 Faults; Pressure Mismatch & ERROR 1; Pump Performance Issues

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Rev 8.1 Oct-15 Page 36 / 42
Symptom
Problem
Solution
P1 and/or P2 FAIL is displayed
The PUMP TYPE option is set
incorrectly.
Review PUMP TYPE setting
The relevant pump has failed
Replace pump
P2 FAIL is displayed but the unit
is a single pump model
The PUMPS NUMBER option is
incorrectly set to 2
Set PUMPS NUMBER to 1
LOW H20 fault is displayed
The mains water supply to the unit has
been isolated
Turn on the mains water supply
The mains pressure is poor
The fault will clear once the break tank
has been re-filled
A non-standard electrical connection
has been made into terminals 19 & 20
Remove all non-standard electrical
connections
The low water float switch has failed
Replace low water float switch
The digital controller has failed
Replace digital controller
HIGH H20 fault is displayed
A non-standard electrical connection
has been made into terminals 21 & 22
Remove all non-standard electrical
connections
The digital controller has failed
Replace digital controller
Pressure reading does not
match actual system pressure.
The internal isolation valve within the
unit is closed
Open the internal isolation valve
The SENSOR TYPE option is set
incorrectly
Review SENSOR TYPE setting
A non-return valve has been installed
between the unit and the system
Remove non-return valve
The pressure sensor has failed
Replace pressure sensor
ERROR 1 fault is displayed
The SENSOR TYPE option is set
incorrectly
Review SENSOR TYPE setting
The pressure sensor has failed
Replace pressure sensor
Pump runs but does not make
up pressure
The pump is air-locked and not pumping
water
Bleed the pump
The pump is persistently
becoming air-locked
The wrong/no flow restrictor is installed
in the float valve (mini and midi units
only)
Check float valve flow restrictor
selection (mini and midi units only)