20
8.8 Alarm Display, Alarm Mes-
sage and Warnings
An alarm message will be generated, when the
return and supply air fan
reports a disruption
. The fault signal relay from the fan-electronic starts a
signal contact to the controller; see circuit documentation or circuit diagram.
The fault signals relay on the return and supply air fan delay after
switching on the voltage activation. Usually the fault signal relay in the
fan electronic is assembled in the factory. In event of an exchange the
setting must be verified with the Rosenberg Software EC-Param.
Possible disruptions can be :
Locked rotor,
Overheating of the electronic,
Overheating of the Motor,
Overcurrent,
Power supply under voltage, Overvoltage,
Over speed,
Error power electronics
An alarm message will be generated, when the
return and supply filter is
dirty
(the maximum pressure deviation of the return filter)
A dirty filter must be replaced. Replacement parts can be ordered at Rosen-
berg Ventilatoren GmbH.
The limit value can be adapted in the program level.
A
smoke alarm
or signal contact to a
central fire alarm system
/a fire pro-
tection flap can be connected to the Suprabox Comfort. The behavior in
case of alarm can be adjusted on startup of the unit. After the alarm is
acknowledged, the Suprabox Comfort continues normal operation.
The water heater is supplied with a capillary contact, which opens in case
the frost protection temperature falls below the minimum level. After that the
mixing valve of the heating coil will be totally opened, the circulating pump
started, the fans stopped and the external air damper closed. When the ca-
pillary contact closes, the unit re-starts after a certain time which can be
determined. After the frost protection alarm is tripped three times (within 2h)
the unit is stopped until it is manually restarted at the operator panel. Before
the manual restart the cause of the alarm must be verified. The SupraBox
COMFORT (SBC)
starts again the normal operation when the disruption at
the signal input is no longer recognized.
Three internal temperature sensors are integrated in the unions of the Su-
prabox Comfort for the measurement of return air, fresh air (during the oper-
ation of the Suprabox Comfort) and to measure the temperature after the
heat recovery. An alarm is initiated in case that one or several sensors are
incorrectly connected or defective. In case of error the unit will be stopped
until it is acknowledged.
Summary of Contents for H42 Series
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