Lockout 113 Flame circuit timeout

What the control is telling you

The flame sensing circuit did not behave as expected in time. A flame circuit shorted to ground may appear as this code, especially a high-resistance short.

Applies to: Trinity Tft60, Tft85, Tft110, Tft154, Tft201, Tft285, Tft340, Tft399

Likely causes

• Flame circuit shorted to ground (high-resistance short)
• Blocked condensate drain
• Voltage on the R or CH terminals
• 4-20 mA input above 21 mA

Test and repair steps

1. Make sure the condensate drain is not blocked
2. Confirm no voltage is applied to the R and CH terminals
3. If a 4-20 mA signal is used, keep it at or below 21 mA

Models that show this code

13 models in Trinity Tft

Other codes on the same units

• Lockout 11 Internal fault: Invalid Burner control state flag
• Lockout 112 Pilot test flame timeout
• Lockout 112 Pilot test flame timeout
• Lockout 113 Flame circuit timeout
• Lockout 122 Light off rate proving failed
• Lockout 122 Light-off rate proving failed
• Lockout 123 Purge rate proving failed
• Lockout 123 Purge rate proving failed