d.
Select (SAVE).
After saving, the AHU controller will restart.
e. Close the app, and then open it again.
For information on setting the cooling and heating mode and other settings, see
Programming the air handler on page 69.
5.4 Temperature sensors
The resistance of the temperature sensors varies inversely with temperature. You need to
measure the temperature of the sensed environment compared with the value from the
measurement of the resistance (obtained by connecting a good quality test meter capable of
measuring up to 100 kΩ at the controller end of the sensor lead).
To obtain a resistance reading, remove power to the boiler. Remove the wire leads by
disconnecting their respective Molex connectors from the sensor(s) in question. Place multi-meter
probes into the sensor’s female Molex connector socket. Do not apply voltage to the sensor -
damage may result.
Section: Service and maintenance
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