NTI · Boiler troubleshooting
User maintenance checks
What is going on
Checks the owner can do between annual service visits.
Check in this order
- Check the cabinet is closed while the boiler runs and no combustible or flammable materials are stored nearby.
- Check the power cord and main power line are connected to the manual switch box inside the boiler.
- Check the control panel for power and error codes. Clear any debris from the panel.
- Check the CH pressure gauge. Pressure should not exceed 30 psig. Higher readings can mean an expansion tank problem; call a technician.
- Check the exhaust vent and intake pipe terminations are clear of debris and obstructions.
- Visually inspect the exhaust vent and intake piping for blockage, leakage, damage, and bracing condition.
- Check the primary pressure relief valve and discharge pipe for weeping. If it weeps often, the expansion tank may not work properly.
Applies to: TRX150
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Source: NTI TRX150 manual, p. 88. Written in our own words; check the manual for your exact model.
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.