emmeti EC 0510 Manuel D'installation Et D'utilisation page 43

II.8.4 TABLE OF ALARMS
The display on the control panel displays the alarms, with reference to
the following table. Alarms are reset by pressing the ALARM key on the
control panel once the cause has been identified and eliminated.
Type of alarm
A02 Antifreeze alarm
A05 Alarm for water differential pressure
switch on condenser/evaporator
A10 Low pressure alarm
A12 High pressure switch alarm
A20 Fan thermal protection activation
alarm
A21 Alarm pump 1
A22 Alarm pump 2
AL30 Inlet water temperature sensor alarm
(ST1)
A32 Coil temperature sensor alarm
(defrosting probe) (ST3)
AL33 Temperature sensor alarm: buffer
tank outlet water (ST4)
AL34 Temperature sensor alarm:
evaporator outlet water (ST2)
A35 Pressure transducer alarm
A40 Pump 1 maintenance signal
A41 Compressor 1 maintenance signal
A42 Compressor 2 maintenance signal
A55 Clock card alarm
A56 Phase sequence alarm
A57 Min/max voltage alarm
Possible cause
Set-point set too low
Insufficient water flow
Insufficient water flow
Presence of air in the water system
Intercept valves closed
The circulating pump (if present) does not run
Water circuit filter obstructed
Short-circuited fan
Faulty sensor
Sensor detached from connector B1
Faulty sensor
Sensor detached from connector B3
Faulty sensor
Sensor detached from connector B4
Faulty sensor
Sensor detached from connector B5
Transducer faulty
Transducer detached from connector B6
43
SECTION II: INSTALLATION AND MAINTENANCE
Cut-in
Check set-point and reset
Check and adjust if necessary
Restore the correct water flow
Bleed
Open valves
See Troubleshooting section
Check and clean if necessary
Indicates that the low pressure switch has been
activated: the alarm is reset manually from the
keyboard.
Note: the alarm will be automatically reset 3 times
in the region of an hour and will then need to be
reset manually. When this alarm is triggered the
AL:021 and AL:022 signals are activated
simultaneously. If the alarm persists refer to
Troubleshooting section.
Indicates that the high pressure switch has been
activated: reset the pressure switch manually by
firmly pressing the button on the pressure switch
itself. Then reset the alarm manually from the
keyboard. If the alarm persists refer to
Troubleshooting section.
Check and replace the fan if necessary
Indicates that following the AL: 005 alarm the
pump may be faulty. The alarm is reset manually
from the keyboard.
Note: the alarm will be automatically reset 3 times
in the region of an hour and will then need to be
reset manually.
Replace the sensor
Insert terminal into connector B1
Replace the sensor
Insert terminal into connector B3
Replace the sensor
Insert terminal into connector B4
Replace the sensor
Insert terminal into connector B5
Replace the transducer
Insert transducer into connector B6
This alarm does not indicate a malfunction but
only signals that the number of working hours of
the pump has exceeded the set value. The unit
continues to operate as normal.
Contact an authorised service centre for
maintenance intervention.
Press the ALARM key to deactivate the signal.
This alarm does not indicate a malfunction but
only signals that the number of working hours of
the compressor has exceeded the set value. The
unit continues to operate as normal.
Contact an authorised service centre for
maintenance intervention.
Press the ALARM key to deactivate the signal.
Indicates that the clock card (accessory) is faulty:
cut off and resume the unit's power. If the alarm
persists, contact an authorised service centre and
the clock card will be replaced. The alarms are
reset automatically.
Indicates that L1-L2-L3 phase sequence
all'interruttore generale is incorrect.
Cut the unit off, adjust the sequence and resume
power. The alarms are reset automatically.
Indicates that the general power supply voltage
(in volt) is outside the set range. Check power
line. The alarms are reset automatically.