HVACopediaNTI · Boiler
Alert 174 DHW outlet temperature was invalid
What the control is telling you
DHW outlet temperature was invalid.
Applies to: Trinity Tft60, Tft85, Tft110, Tft154, Tft201, Tft285, Tft340, Tft399
Models that show this code
13 models in Trinity Tft
Other codes on the same units
- Alert 172 DHW temperature was invalid
- Alert 173 DHW inlet temperature was invalid
- Alert 173 DHW inlet temperature was invalid
- Alert 174 DHW outlet temperature was invalid
- Alert 175 DHW high limit must be disabled for Auto mode
- Alert 176 DHW sensor type was not compatible for Auto mode
- Alert 177 DHW priority source setting was invalid
- Alert 178 DHW priority method setting was invalid
Save it for the next call
Star this code in the HVACopedia app and keep the whole library on your phone for jobs with no signal.
Source: NTI Trinity Tft399 Installation and Operation Manual (2018-09-07), Sec. 16.0 Troubleshooting, Table 16-4. Summarized in our own words; check the original manual for your model.
Homeowner looking at this code? See what it means for you and when to call a technician.
For licensed technicians. Gas, electrical and refrigerant work must be done by a qualified, licensed person. Shut off power and gas before servicing, never bypass a safety control, and follow the manufacturer’s manual for the exact model; it and local codes always take priority. HVACopedia is not affiliated with any manufacturer; brand and model names only identify the equipment.