Condair Nortec GS 50, Operation And Maintenance Manual

Page: 73 / 92

73 Fault Isolation Nortec GS
2583701_C_EN_1812_Nortec-GS_OM
Code
Message Probable Cause Corrective Action(s)
Warning Fault
W32 – RH Signal The RH input is less than 3%. Operation is interrupted until an input higher
than 3% is received.
Loose wiring, faulty sensor. – Check the connection between
the sensor and the unit.
– Swap the sensor with another
sensor and verify that it is work -
ing. If necessary, replace the
sensor.
Layout of the humidifier control sys -
tem may be causing signal interfer -
ence.
– Check that the controls layout
permits accurate readings.
W34 – Remote Disabled The unit has been disabled remotely by the building management system
(BMS) through Modbus communication. Operation is interrupted until the
unit is enabled again through Modbus or the control software.
Unit disabled through the BMS.
– Enable the unit through the
BMS.
– If unit cannot be enabled
remotely, try enabling the unit
through the Modbus setting in the
control software.
W35 – BMS T/O (timeout) The maximum wait time without any communications from the BMS has
been exceeded. If the signal Source is set to "Analog", the humidifier will
continue operating; otherwise it stops producing steam until communica -
tions with the BMS is re-established.
W42 – RH High Warning Sensed humidity is above the RH High value configured in the control soft -
ware. The unit will remain idle until the sensed RH value drops below the
setpoint value.
Incorrect layout of the humidifier
control system (sensor location too
close to steam distributor or other
sources that affect measurement), or
defective components.
– Check the humidifier control
system.
Humidifier capacity too large for the
space being humidified.
– Limit the output capacity of
the humidifier – refer to Manual
Capacity
.
– Adjust the proportional and/or integral
value of the controller.
The RH High value for the sensor
signal may be set too low.
– Adjust the RH High value for the
sensor signal.
W43 – RH Low Warning Sensed humidity is below the minimum value configured in the control soft -
ware. The unit should continue operating unless it is in standby mode.
Incorrect layout of the humidifier
control system (sensor location too
close to steam distributor or other
sources that affect measurement), or
defective components.
– Check the humidifier control
system.
The RH Low value for the sensor
signal may be set too high.
– Adjust the RH Low value for the
sensor signal.
Unit may be in standby mode. – Check the safety loop is
closed, and that all burners are
operational.