Temperature reading errors
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PYROCON19
Owner’s manual & Technician Settings
Pg. 21
Ambient temperature sensor readings (on snow sensor)
are out of reliable measuring range
Ambient temperature < -9°F/-23°C
Ambient temperature > 54°F/12°C
Upper limit
temperature
Sensor error
SensErr 2 – Upper limit temperature sensor is not connected or short circuit
The system will continue to operate regardless of the upper limit temperature.
Required actions:
1. Refer to P03 section of the technician settings.
2. Check the temperature value and disable the sensor if needed.
3. Replace the sensor.
The system will continue to operate using constant predefined values.
In addition, the display will alternate between “LO” and -11°F/-24°C for low temperature
readings, and between “HI” and 55°F/13°C for high temperature readings.
Communication
error with snow
sensors
SensErr ## – Communication error with one (or more) snow sensors
If the system is configured to work with more than 1 snow sensor, the faulty
snow sensor number will appear on display: 01...08.
The system will use readings from snow sensor 1 instead of the missing
readings from the faulty snow sensor.
Use DIP switch S6 located on the side of thermostat
to select BMS (A1,B1) network protocol:
- S6 ON – BACnet
- S6 OFF - MODBUS
BMS – BACnet/Modbus
BACnet
Modbus
Upper limit
temperature
too high
SensErr 1 – Temperature measured by upper limit sensor is more than the upper
limit temperature configured in P03.
The system will continue to operate regardless of the upper limit temperature.
