Cause
- Heat Termination Thermostat (HTT) is open.
| Components | Troubleshooting | Corrective actions |
|---|---|---|
| Heat Termination Thermostat (HTT) | Check for 24 volts at test point TP10, if no voltage at TP10 after unit has reached set point HTT is open. | Replace HTT if defective, refer to Sensor Replacement Section 6.24.2. |
