Alarm Descriptions - Swegon CASA R3 Smart Installation, Commissioning And Maintenance Instructions

7.4 Alarm descriptions

Alarm Modbus
register - bit
(LSB)
T1, T2...T9
3x6136-6
sensor fault*
3x6137-6
Post heater
3x6136-0
fail (*)
3x6137-0
Preheater fail
3x6136-1
(*)
3x6137-1
Water radia-
3x6136-3
tor freezing
3x6137-3
warning
Supply fan
3x6136-4
fail
3x6137-4
Extract fan
3x6136-5
fail
3x6137-5
Connection
fail
Emergency
3x6136-7
stop
Internal
3x6136-10
failure
3x6137-10
Rotor fail
3x6136-14
3x6137-14
Fan control
3x6136-15
3x6137-15
Supply air
3x6136-12
hot*
3x6137-12
Supply air
3x6136-11
cold*
3x6137-11
Internal
3x6136-13
overheat
3x6137-13
Elect. pre-
3x6136-2
heater fail
3x6137-2
External
3x6138-1
alarm
Service
3x6137-9
reminder*
All rights to changes reserved.
Cause
Sensor reading is out of
range.
Post heater control di-
agnostics has detected
open circuit or control
fail.
Preheater control di-
agnostics has detected
open circuit or control
fail.
Water temperature is
critically low (12 °C) and
outdoor temperature is
below 0 °C.
No fan speed signal.
No fan speed signal.
Control panel does
not communicate with
ventilation unit.
Emergency stop or
emergency stop resetta-
ble input activated.
Internal temperature
critical high. Memory
read error.
No rotor speed signal.
Constant duct pressure
control error.
Supply air temperature
critical high (50 °C).
Supply air temperature
critical low (10 °C) over
5 minutes.
Internal temperature
critical high (50 °C).
External electrical pre-
heater control fail.
External alarm input is
active.
Service interval has
elapsed.
Action
The ventilation unit runs in a restricted operating mode. Check
cable connections and configuration. Change sensor if faulty.
The ventilation unit runs normally but post heating may not work.
Check manual overheating protection. Check post heating
circuit.
The ventilation unit runs normally but preheating may not work.
Check manual overheating protection. Check preheating
circuit.
The ventilation unit runs normally but freezing protection is ac-
tivated (electrical heater is activated and valve is fully opened).
If water temperature is below 10 °C the unit is stopped. Unit is
started when water temperature rises over 15 °C.
Ensure that the heating system circulation pump is running
and the water is warm.
The ventilation unit runs normally.
Check fan and cabling.
The ventilation unit runs normally.
Check fan and cabling.
Restart the ventilation unit.
Check cabling. Test other connector.
The ventilation unit is stopped by the emergency stop function.
The emergency stop alarm is reset and unit is started when
the input is deactivated.
The emergency stop resettable alarm is reset from user panel.
The ventilation unit runs in a restricted operating mode.
Restart the ventilation unit.
The ventilation unit runs normally.
Check rotor motor, belt and cabling.
The ventilation unit runs normally but without constant duct
pressure control.
Check pressure measurement and settings in commissioning
mode.
The ventilation unit runs normally but all electrical heaters are
controlled off.
Inspect the cause for high temperature. Do not use the unit
before problem detected and fixed.
The ventilation unit is stopped.
The unit is started when supply temperature rises over 10 °C.
The ventilation unit runs normally but all electrical heaters are
controlled off.
Inspect the cause for high temperature. Do not use the unit
before problem detected and fixed.
The ventilation unit runs normally.
Check over heating protection, cabling and settings.
The ventilation unit runs normally.
Service the ventilation unit and reset the service reminder.
R2.060219
*) Indicated in Smart cooker hood
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