HVACopediaNTI · Boiler
Lockout 263 Invalid DHW demand temperature setting
What the control is telling you
The control rejected a configuration value: invalid DHW demand temperature setting.
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
- Lockout 259 Modulation output must be fan if controller interaction is enabled
- Lockout 260 Asymmetrical paired (no flap) is set but flap switch input is energized
- Lockout 261 Neighbor burner control blower fault detected
- Lockout 262 Blower fault detected during flap test
- Lockout 264 Invalid preferred outlet high limit setting
- Lockout 265 Invalid preferred lightoff rate setting
- Lockout 266 Invalid preferred stack limit rate setting
- Lockout 32 Internal fault: Safety Key 0
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Source: NTI Trinity Tft399 Installation and Operation Manual (2018-09-07), Sec. 16.0 Troubleshooting, Table 16-3. Summarized in our own words; check the original manual for your model.
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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.