AERMEC MODUCONTROL Bedienungsanleitung Seite 71

17 ALARMS SUMMARY TABLE
The units envision two types of malfunctioning signals:
— Pre-alarm
— Alarm
The first type is indicated by the flashing of the red LED on the display, successive pressing of the bell key
display the list of alarms (with index and cause indicated in the table below). A pre-alarm remains such for 60 seconds: if
after this time the condition that caused the pre-alarm has not disappeared, the same becomes an alarm. The alarms are
displayed in the same way as the pre-alarms, except for the switch-on of the fixed red LED. Before rearming the unit, it is
recommended to contact the after-sales service. To rearm the unit, switch it off and back on again using the stand-by key.
The pre-alarms can become alarms when:
— A time has passed longer than or equal to 60 seconds, in the pre-alarm condition.
— The maximum number of pre-alarms in one hour (five) has been exceeded. In this case, every successive pre-alarm will be
displayed directly as an alarm, and as such, will stop the machine until the reason for the same is solved.
Code
Alarm code
Pre-alarm
Compressor magnet circuit
breaker
1 101
Thermomagnetic fan switch
Pump magnet circuit breaker
2 102 Thermomagnetic fan switch
3 103 High pressure switch
Flow switch
Water differential pressure
4 104
switch
5 105 Low pressure switch
6 106 No water inlet probe
7 107 No water outlet probe
NOTICE
Causes
This signal intervenes if the contact relative to the magnet circuit
breaker switch protecting the MTC compressor opens (Table 2,
contact ID1, clamps M7.1 - M7.2, normally closed)
This signal intervenes if the contact relative to the magnet circuit
breaker switch protecting the MTV fans opens (Table 2, contact
ID6, clamps M7S.3 - M7S.4, normally closed) This code is displayed
only if the board is used as a board spare part with SW up to ver-
sion 3.6.
This signal DOES NOT give the state of the high pressure switch
itself but of the compressor switch. The high pressure switch oper-
ates directly on the compressor switches. If the board commands
compressor switch-on and the switch does not become active af-
ter 3 seconds, this signal occurs. This alarm can also be caused by
an operating defect of the return relay from the compressor switch
to the board (indicated as RAP in the wiring diagrams). This signal
occurs if the compressor switch deactivates during operation. AP
(Table 2, contact ID4, clamps M7.7 – M7.8, normally closed)
This signal occurs with the opening of the contact relative to the
differential flow switch or pressure switch; this alarm is not relative
for the first 40" from pump start-up. The machine blocks in alarm
mode when the maximum number of flow switch interventions
allowed (expressed by the set_factory parameter (y): default 5) is
exceeded. If the frost protection in standby mode is activated (and
therefore also the pump), the state of the flow switch is also con-
trolled. FL/PD (Table 2, contact ID2, clamps M7.3 – M7.4, normally
closed)
This signal intervenes when the contact relative to the low pres-
sure switch opens (compressor intake). BP (Table 2, contact ID5,
clamps M7S.1 – M7S.2)
This signal occurs when the water inlet probe is disconnected
This signal occurs when the water outlet probe is disconnected
MODUCONTROL
25/01 6343841_06
allows to
Note
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