NTI Boiler: Condensate line blocked (display error)
Condensate line blocked (display error) on a NTI boiler: Boiler shows an error and won't run when the condensate line is blocked. No error code number is printed on these pages. Condensing boilers have to get rid of the water they make, and a frozen, kinked or flat line stops that. Common in cold weather where the line runs through an unheated space.
Applies to: TRX150
Common causes of condensate line blocked (display error)
- Condensate line frozen
- Condensate line blocked or kinked
- Condensate line not pitched properly
- Trap dirty or overflow tee blocked
How to fix condensate line blocked (display error): step by step
- Check the condensate line for freezing, kinks or blockage.
- Clear any blockage and confirm the line slopes down away from the boiler.
- Check the overflow tee and flexible tube for kinks.
- Thaw a frozen line gently and insulate or reroute it away from the cold.
- Clean the condensate trap as described in the Maintenance section (not on these pages).
- If the line cannot be cleared, have a qualified service technician repair it.
If the unit shows an error code, look it up: NTI Boiler codes
Models
TRX085TRX110CTRX150TRX199TRX199C
Source: NTI TRX150 manual, p. 53. 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.