Rh Sensor Module - Traulsen G Series Manual

I. f - RH Sensor Module
The Intela-Traul RH module (Relative Humidity Sensor) is found on the Traulsen Energy Star
rated units, from October 2014 to the present. This technical bulletin may not cover all the
situations that may arise in the field and final diagnosis of field based equipment is the sole
responsibility of the technician contracted to perform any work required.
Functionality:
The RH module senses the ambient temperature and relative humidity and communicates the
information to the MIT II control. The MIT II control uses this data to perform the following tasks.
As seen in Table 8.
•
Cycle the door heater based on ambient temperature and humidity conditions.
•
Increase/decrease the intervals between defrosts based on the number of door
open/close events and the ambient temperature conditions. + or -75%.
Parameters Table:
Displayed
Table 8
Troubleshooting Table:
Symptom
Excessive condensation on
the door.
Coil freezes up.
Table 9
Note: You can disconnect the RH Sensor and the unit will run with its default settings.
Parameter Name
Relative Humidity
(Ambient)
Dry Bulb
Temperature
Dew Point
Temperature
Possible cause
Inaccurate reading from the
RH module.
The RH module extends the
interval between defrost
based on ambient conditions.
Sample Value
55.0
75.0
65.0
Unplug RH sensor. Replace
the RH sensor module.
Unplug RH sensor. Put unit
into manual defrost. Replace
RH sensor.
Description
Relative humidity of
the room.
Ambient temperature
of the room.
Calculated dew point
temperature.
Solution
12