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4.6 Alarm
Subdivision A, B, C alarms
•
A alarms has no delay time and stops unit immediately. Must be acknowledged to go out. ( a receipt is required (login
as user)).
•
B alarms has delay time and unit runs. Must be acknowledged to go out. a receipt is required (login as user).
•
C alarms has no delay and stops fans immediately. Goes out automatically as soon as the reason for the alarm has
disappeared.
Alarm List:
No.
1
Supply air fan (SAF) out of operation
2
Exhaust air fan (EAF) out of operation
3
P1-Heater out of operation (WW after heating)
4
P1 Cooler out of operation
5
P1-Exchanger out of service
6
Filter guard 1
7
Flow switch 1
10
Fire alarm
11
External power switch
12
External alarm
13
Supply air control error (max. difference between
setpoint and supply air 10k)
High supply air temperature (30 °c)
15
Low supply air temperature (10 °c)
16
High room temperature (30 °c)
19
Low room temperature (10 °c)
20
High exhaust air temperature (30 °c)
21
Low exhaust air temperature (10 °c)
22
23
Electrical heater overtemperature
25
Low frost protection sensor temperature
26
Low efficiency
27
Outdoor air sensor fault
29
Heat exchanger rotation sentinel fault
33
Supply fan external operation
34
Exhaust fan External operation
35
Ventilation manual operation
36
Manual operation supply air control
37
Manual operation supply air fan mode
38
Manual operation frequency control supply air
39
Manual operation exhaust fan mode
40
Manual operation frequency control exhaust Air
41
Manual operation Heating valve
42
Manual Operation Heat exchanger
43
Manual Operation cooler valve
44
Manual Operation P1 Heaters (WW after heating)
45
Manual Operation P1-exchanger
46
Manual Operation P1 Cooler
48
Internal Battery failure
49
Supply air temperature sensor alarm
50
Exhaust air temperature sensor alarm
57
Defrost temperature sensor alarm
58
Frost protection temperature sensor alarm
77
Alarm Frequency Inverter SAF
78
Alarm Frequency converter EAF
79
Communication error frequency converter SAF
80
Communication error frequency converter EAF
81
Communication error expansion unit 1
82
Communication error expansion unit 2
83
Alarm Frequency Inverter SAF
84
Alarm Frequency Inverter EAF
85
Manual-operated output
88
Restart after voltage return
90
Filter guard 2
119
Communication error expansion unit 3
120
Communication error expansion unit 4
Alarm
54
Priority
Fan stop
B
No
Check SAF cable connection.
B
No
Check EAF cable connection.
B
No
Check P1 heater cable connection.
B
No
Check P1 Cooler cable connection.
B
No
Check P1 Exchanger cable connection.
B
No
Change filter with the new one.
B
No
N/A
A
Yes
Check fire alarm cable connection.
C
Yes
N/A
B
No
Check external alarm cable connection.
B
No
Check heaters and coolers running or not.
B
No
Check supply air set temperature and heaters.
B
No
Check supply air temperature and heater.
B
No
Check set point.
B
No
Check setpoint.
B
No
Check set point.
B
No
Check setpoint.
A
Yes
Check electrical heaters limit termostats and
cable connection.
A
Yes
Check hot coil water feeding temperature.
B
No
B
Yes
Check outdoor sensor cable connection.
B
No
Check rotary exchanger running.
C
No
Check running mode.
C
No
Check running mode.
C
No
Check running mode.
C
No
Check running mode.
C
No
Check running mode.
C
No
Check running mode.
C
No
Check running mode.
C
No
Check running mode.
C
No
Check running mode.
C
No
Check running mode.
C
No
Check running mode.
C
No
Check running mode.
C
No
Check running mode.
C
No
Check running mode.
A
No
Contact with AERA Support for new battery.
B
Yes
Check outdoor sensor cable connection.
B
Yes
Check outdoor sensor cable connection.
B
Yes
Check outdoor sensor cable connection.
B
Yes
Check outdoor sensor cable connection.
A
No
Check mains cable connection of SAF.
A
No
Check mains cable connection of EAF.
C
No
Check communication cable connection of SAF.
C
No
Check communication cable connection of EAF.
C
No
Check communication cable connection of
expansion unit 1.
C
No
Check communication cable connection of
expansion unit 2.
C
No
SAF Modbus internal alarm.
C
No
EAF Modbus internal alarm.
C
No
Check running mode.
B
Yes
N/A.
B
No
Change filter with the new one.
C
No
Check communication cable connection of
expansion unit 3.
C
No
Check communication cable connection of
Solution
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