HVACopediaNTI · Boiler
Alert 127 Fan Speed out of range in RUN
What the control is telling you
Fan Speed out of range in RUN.
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 125 Modulation rate was limited due to stack limit
- Alert 126 Modulation rate was limited due to anti-condensation
- Alert 126 Modulation rate was limited due to anti-condensation
- Alert 127 Fan Speed out of range in RUN
- Alert 128 Modulation limited - air switch open
- Alert 128 Modulation limited - air switch open
- Alert 129 Slow start ramp setting of zero will result in no modulation rate change
- Alert 129 Slow start ramp setting of zero will result in no modulation rate change
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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.
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