Mikrofill 3, Техническая документация инструкция

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FAULT DIAGNOSIS
TECHNICAL DOCUMENTATION 13
The Mikrofill 3 has a full self-diagnostic microprocessor unit which continually self-checks its operation. If an
internal fault is diagnosed then this will be displayed on the screen in place of the usual status display
(described on page 10 ). The message displayed will directly relate to the issue that the unit has registered and
will aid in resolving the fault.
If you continue to experience a fault, or are having difficulty in diagnosing the specific cause, then please
contact our technical department on 03452 60 60 20 for further assistance.
STATUS / FAULT CONDITIONS
continued on page 14...
CAUSE
The system pressure is not
rising due to a leak.
The unit is going to fault
when trying to fill due to low
incoming water pressure.
Low system pressure.
Low incoming water
pressure.
Blocked inlet ballofix valve
filter.
Possible persistent leak on
the system.
High system pressure.
Possible damaged sensor.
RESOLUTION
The unit has been filling the system for longer than the Level
1 Leak Alert Time set in SERVICE MODE . The system should be
checked for leaks. To reinstate the unit, power it off and
back on again.
The unit has been trying to fill the system but has been
unable to due to a lack of mains water pressure, causing
the unit to go to fault for the duration of the Level 1 Leak
Alert Time. Check the incoming mains pressure when the
unit is filling (see also “ FILLING STOPPED DUE TO LOW MAINS
WATER PRESSURE ”).
The system pressure has dropped below the Alarm Low
setting. Check for leaks and that the Alarm Low has not
been set incorrectly (refer to page 12 ). To reinstate the unit,
power it off and back on again.
The unit requires a dynamic mains pressure of 0.3 bar or
more above its cold fill setting. If the mains pressure usually
satisfies this requirement, then the cause of the mains
pressure drop should be investigated.
The filter in the included mains inlet ballofix valve should be
removed and cleaned to ensure flow into the unit is not
being restricted (see page 17 for details).
If the unit operates more than the Frequent Use set point
during a 24-hour period this message will be displayed. This
will not stop the unit from operating or trigger the BMS fault
relays but it does indicate that there may be a small leak on
the system which should be investigated. To reinstate the
unit, power it off and back on again.
The system pressure has exceeded the Alarm High setting.
Drain down and check the air charge of any expansion
vessels on the system. Confirm the diaphragm is still intact
and check that the vessel is adequately sized. Also check
the Alarm High has not been set incorrectly (refer to page
12 ). This fault will automatically reset when the pressure
drops back down below the Alarm High setpoint.
Power the unit off and back on, and the unit will return to
normal operation. If the unit displays a ‘#’ in the corner of
the display then this indicates that there is still a possible
fault. After 10 minutes the unit will recheck the sensors and
return to displaying “ SENSOR FAILURE ” if the issue still
remains.
Obtain the calibration code for the sensors (as outlined on
page 10 ) and then contact our technical department on
03452 60 60 20 and we will be able to confirm if this is a
genuine sensor fault.
FAULT INDICATION
“ FILLING STOPPED DUE TO
LEVEL 1 LEAK ALERT - CHECK
SYSTEM FOR LEAKS! ”
“ FILLING STOPPED DUE TO
LEVEL 2 LEAK ALERT - CHECK
SYSTEM FOR LEAKS! ”
“ FILLING STOPPED DUE TO
LOW MAINS WATER
PRESSURE ”
“ FREQUENT USE! ”
“ HIGH PRESSURE FAULT -
CHECK EXPANSION VESSEL! ”
“ SENSOR FAILURE ”