NTI Boiler: Checking spark and gas valve voltage during ignition
Checking spark and gas valve voltage during ignition on a NTI boiler: What to measure while the control is in its trial for ignition.
Applies to: Trinity Tft60, Tft85, Tft110, Tft155, Tft175, Tft200, Tft250, Tft300, Tft399
How to fix checking spark and gas valve voltage during ignition: step by step
- Measure 120 VAC from J5-6 to ground for the spark generator
- Measure 24 VAC from J5-2 to J4-10 for the gas valve
- Look for the arc through the observation port next to the spark electrode in the burner door
If the unit shows an error code, look it up: NTI Boiler codes
Models
Tft60Tft60Tft85Tft85Tft110Tft110Tft154Tft155Tft175Tft200Tft201Tft250Tft285Tft300Tft340Tft399Tft399
Source: NTI Tft60-399 Installation and Operation Instructions (rev. 2012-04-09), Sec. 15.0 Troubleshooting. Written in our own words as a summary; always check the original manual.
General guidance for qualified technicians. The manufacturer's installation and service manual and local codes always take priority. Aurora Star Tech is not affiliated with, endorsed by or sponsored by any equipment manufacturer; brand and model names are used only to identify equipment and belong to their owners.