HVACopediaNTI · Boiler
1 10 CH flow temperature probe open or short circuit
What the control is telling you
Clears when the CH temperature decreases.
Applies to: TRX150
Likely causes
- Loose or damaged sensor wiring
- Failed sensor
Test and repair steps
- Check the CH temperature sensor and make sure the connections are secure.
- Check the sensor resistance. If it is zero, replace the sensor.
- If the problem continues, replace the main control.
Models that show this code
5 models in TRX
Other codes on the same units
- 01 05 Insufficient circulation or low water pressure
- 01 06 Insufficient circulation or low water pressure
- 01 07 Insufficient circulation or water
- 01 08 Low water pressure lockout (water pressure switch)
- 1 12 CH return temperature probe open or short circuit
- 1 14 External (outdoor) sensor open or short circuit
- 1 16 Floor thermostat contact open
- 1 P1 Insufficient circulation or missing water (warning)
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Source: NTI TRX150 manual, p. 90. Summarized in our own words; check the original manual for your model.
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