1 14 External (outdoor) sensor open or short circuit

What the control is telling you

Clears when the condition is fixed. While active, the boiler runs CH at a fixed setpoint equal to setting 4.0.2 (5.0.2 or 6.0.2 for zones 2 and 3).

Applies to: TRX150

Likely causes

• Damaged sensor wiring (staples can cut wires)
• Failed outdoor sensor

Test and repair steps

1. Check the outdoor sensor and make sure all wiring is intact and secure.
2. Check the outdoor sensor resistance against Table 37 (not on these pages). Replace the sensor if it does not match.
3. If the problem continues, replace the outdoor sensor.

Models that show this code

5 models in TRX

Other codes on the same units

• 01 07 Insufficient circulation or water
• 01 08 Low water pressure lockout (water pressure switch)
• 1 10 CH flow temperature probe open or short circuit
• 1 12 CH return temperature probe open or short circuit
• 1 16 Floor thermostat contact open
• 1 P1 Insufficient circulation or missing water (warning)
• 1 P2 Insufficient circulation or missing water (warning)
• 1 P3 Inadequate circulation or missing water (warning)