SF 27 - 2400 Baud Rate storage failure

What does SF 27 mean?

A Storage Failure (SF) error, specifically SF 27, indicates that the slave thermostat's stored 2400 Baud Rate setting has been corrupted or lost. The system will default to ON. This setting pertains to the communication speed of the device.

• Corruption of stored baud rate data in the slave thermostat's memory.
• Power fluctuations or system reset causing data loss.
• Internal hardware fault affecting non-volatile memory.

Click steps to track your progress.

1. 1

   Establish communications with the slave thermostat using the PC Command Center software.

2. 2

   Initiate a Device Inquiry for the slave thermostat to verify its current settings.

3. 3

   Perform the 'Modify Device Information' command and navigate to the 2400 Baud Rate setting.

4. 4

   Re-enter the correct baud rate setting (ON or OFF as required).

5. 5

   Press F1 to 'Perform Update' and wait for acknowledgement to save the new setting.

6. 6

   Exit the configuration menu and program, then verify the baud rate setting is correctly stored.