NTI · Boiler

Lockout 257 Controller interaction enable does not match neighbor stack fault setting

High severity Trinity Tft

What the control is telling you

Controller interaction enable does not match neighbor stack fault setting.

Applies to: Trinity Tft60, Tft85, Tft110, Tft154, Tft201, Tft285, Tft340, Tft399

Models that show this code

13 models in Trinity Tft

Tft110Tft154Tft155Tft175Tft200Tft201Tft250Tft285Tft300Tft340Tft399Tft60Tft85

Other codes on the same units

  • Lockout 253 Lead Lag modulation sensor not valid with setpoint source
  • Lockout 254 Lead Lag modulation sensor not valid with local setpoint source
  • Lockout 255 Lead Lag modulation sensor not valid with local modulation source
  • Lockout 256 Selected Controller interaction enable setting is not allowed
  • Lockout 258 Controller ID must be non-zero if controller interaction is enabled
  • 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

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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.