Alarm 343 — Low temperature water out (F2040)

What does Alarm 343 mean?

The F2040 outdoor unit detects that the temperature of the outgoing water is too low. This can indicate a problem with the heating process or a potential freezing risk within the unit.

• Outgoing water temperature is below the safe operating limit.
• Issue with the F2040 unit's internal heating components.
• System configuration incorrect for current ambient conditions.
• External factors causing excessive heat loss from the water lines.

Click steps to track your progress.

1. 1

   Verify the F2040 unit is operating correctly and not showing other errors.

2. 2

   Check the system's configuration and ensure settings are appropriate for current ambient conditions.

3. 3

   Inspect the water piping from the F2040 for adequate insulation, especially in cold areas.

4. 4

   Update the NIBE SMO 20 firmware to the latest available version.