!!
critical Honeywell
Error Code Space Freeze Protection Alarm
A high-severity alarm indicating that space temperature has dropped to dangerous levels where freezing could occur.
? What Causes This
Heating system failure, extremely cold outdoor conditions, or heating setpoint configuration issues.
✓ How to Fix It
- Verify heating system is operational.
- Check space temperature sensor readings.
- Ensure heating outputs are energized.
- Contact service if heating system is not responding.
Source: page 118 of the official manual
From the manual
