Alarms Summary Table - AERMEC MODUCONTROL Manual De Instrucciones

The units envision two types of malfunction-
ing 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 allows to display
ATTENTION:
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 dis-
played directly as an alarm, and as such, will stop the machine until the reason for the same is solved.
Code Code
Alarm Pre-alarm
1 101
2 102
3 103
4 104
5 105
6 106
7 107
8 108
9 109
10 110
11 111
70
EN
IMDCFJ. 12.05 6343841_03

Alarms summary table

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 dis-
played in the same way as the pre-alarms,
Causes
Compressor magnet circuit breaker
Fan magnet circuit breaker
Pump magnet circuit breaker
Fan magnet circuit breaker
High pressure switch
Flow switch
Water differential pressure switch
Low pressure switch
No water inlet probe
No water outlet probe
Water freezing
No pressing line probe
High pressing line gas temperature
Flow pressure transducer
no compressor
except for the switch-on of the fixed red
LED. Before rearming the unit, it is recom-
mended to contact the after-sales service.
To rearm the unit, switch it off and back on
again using the stand-by key.
Notes
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 dis-
played only if the board is used as a board spare part with SW up
to version 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
after 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
controlled. FL/PD (Table 2, contact ID2, clamps M7.3 – M7.4, nor-
mally 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
This signal occurs when the anti-freeze threshold is reached
(set_installer (6) default: 3°C) from the output water temperature.
The pre-alarm state is exited with outlet water temperature tem-
perature exceeding the set_installer (6) + set_factory (J) (default
3+1=4°C).
The anti-freeze alarm is suspended (in heating mode) for a period
of time equal to 3' (set_factory parameter (H)) from compressor
switch on.
This signal occurs when the pressing line gas probe is absent
This signal occurs when the temperature of the pressing line gas
(SGP probe) exceeds the threshold envisioned by the parameter
(set_factory (6), default 135°C). The pre-alarm state is exited with
set_factory (7) temperature (default 135 – 10 = 125 °C)
This signal occurs when the compressor flow transducer is absent
and the machine is set as heat pump or the presence of the DCP
is set