P.LEMMENS CB2 TAC5 SC Installationsanleitung Seite 19

8) Alarms
The alarm status output can be taken on the potential free contact R1.
The control box CB2 TAC5 SC features the following alarms:
Displayed text
1 FAN ALARM
2 PRESSURE ALARM
3 Pa INIT ALARM
4 CA, LS, CPs or CPf
ALARM
5 DATA ERROR
6 FIRE ALARM
7 ALARM SERVICE
FAN.STOP SERVICE
8 COM ERROR
9 ALARM T°
SENSOR 2
10 /
11 ALARM T°
SENSOR 5
12 ALARM
POSTHEAT
T° TOO
LOW
13 /
Description
Describes a fan function default. Check wiring, connections and 230V supply.
Otherwise the problem can be caused by defective wire, control circuit or
motor. (1)
It signals a fan pressure alarm.
Alarm LED is lit, R2 relay on SAT3 (option) is closed and the LED over the
SAT3 relay is lit. (1)
1) Actual fan airflow < requested airflow: the requested airflow is located at
a pressure level the fan cannot reach. Change the air system, or the airflow
requested, or a use bigger fan.
2) the nominal airflow requested cannot be reached because the lower
boundary of the fan's working range is reached.
3) Pressure too unstable. (1)
This alarm means the requested airflow or pressure cannot be reached and
the fan is already given the maximum or minimum flow. (1)
R2 relay on SAT3 (option) is not activated by this alarm.
This alarm indicates an error in the data of the control circuit. (1)
To solve this problem :
- Make a « factory reset » using the advanced setup (to activate press keys
SETUP and ENTER simultaneously until text "ADVANCED SETUP" appears
on the screen. Select "factory reset" and press enter.
- If not solved circuit has to be sent back for a factory reprogramming.
Fire Alarm with an external contact from a fire detection system (connected
to IN2).
After a fire alarm it is necessary to perform a RESET (via the RESET button
on the TAC5 SC circuit to return to normal operation).
This alarm indicates the fan operating time (in hours) has exceeded a certain
limit set during the configuration.
This alarm can stop or not the fans.
This alarm indicates a communication problem between RC and TAC5 SC
(only with option RC)
Only with post-heating or post-cooling option with room temperature sensor:
room T° sensor connected to T2 on TAC5 SC circuit is defect or not
connected. This sensor is used to maintain a constant ambient temperature.
After correction of the failure press 'RESET' on the TAC5 SC circuit.
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Only with post-heating or post-cooling option: It indicates a failure of the T°
sensor T5 located in the supply duct and connected to the TAC5 SC circuit
(opened or short circuit) or that it is not connected. This sensor is used to
regulate the post-heating or post-cooling function, or to limit the power of the
battery in case of exceeding of high or low thresholds of supply temperature
when the temperature control is configured as comfort on T2, that is to say,
on the room temperature.
After fixing the failure, press RESET on the TAC5 SC circuit.
Only with post heating option: this alarm indicates that the supply T° set point
cannot be reached (actual T° lower than set point during 15 minutes, or 30
minutes if comfort on T2 rather than on T5, while post heating is at
maximum). Comfort temperature is by default the supply air temperature
measured on T5 but can also be configured via the advanced setup as that
measured on T2, that is to say the room temperature (optional sensor).
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