Cause of error code E14

- T3 ? ow sensor ground connection
- T3 ? ow sensor failure
- Controller failure
- Thermostat indirect tank failure 

Solution for error code E14

Check the data in Error mode. Boiler data during error:
1 Error  = 14
2 Operational status  = 00
3 Flow temp.  = -22
4 Return temp. = xx*
5 kW burner  = 00**
6 % pomp  = xx*
* = variable values
**= x3415=BTU/hr

A temperature of - 36 is displayed at position 3. Check the wiring and/or measure the resistance of the ? ow sensor. The resistance should be approx. 12 kOhm at 77°F. (See table in Appendix B)

If necessary, replace the ? ow sensor