No water in tank
Possible sensor fault
Incoming voltage instability
Systempressure low
Systempressure high
Possible excess water leak
on the system
Possible pump fault
Possible persistent leak on
system
Reinstate water supply to tank
1. Switch unit off and back on, if sensor failure does not
reappear on the display see note 2. If sensor failure does
reappear check sensors are connected to the printed
circuit board correctly. If the problem persists ring our
service department.
2. If this occurs switch the unit off and back on, the unit
should then operate as normal. If this fault appears on
a regular basis then a mains electrical filter (anti surge
device) is required. Ring our service department for
advice.
Check system for leaks. Switch unit off and back on to
reinstate. Check Low Alarmsetting.
Reduce pressure in system and check expansion vessel
air charge/size. Check High Alarmsetting.
Check system for leaks, then switch unit off and back on
to reinstate.
Switch unit off and back on to reinstate, if pump does
not operate when required replace pump. If pump
operates, dry run setting may need to be increased.
If the unit operates more than the set value in a 24hr
period the unit will bring up the frequent use alarm, this
will not stop the unit from operating but indicates that
there may be a small leak on the system. Switch the unit
off and back on to reinstate. Investigate possible leak.
Fault conditions
The Mikrofill Maxi and Maxi Plus have been designed such that most apparent 'faults' can be
remedied on site, if in doubt ring our service department on 08452 606020
11
Remedies
Cause
Fault indications
Low water level
Sensor failure
Low pressure alarm
High pressure alarm
Systemfailure
Pump failure
Frequent use alarm
6 Fault diagnosis
System faults will be apparent from the alarm message displayed. The Maxi itself has a full self-diagnostic
microprocessor unit which continually self-checks the operation. If an internal fault is diagnosed then the fault will
be displayed on the screen, e.g. sensor failure.
Summary of Contents for Maxi Plus
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