Alarm 294 — Incompatible heat pump at startup

What does Alarm 294 mean?

During system startup, an alarm incorrectly indicated that the connected heat pump (F2040) was incompatible. This prevented proper system operation and could be a false error message.

• Software bug causing a false incompatibility alarm during startup.
• Incorrect communication protocols between the SMO 20 and F2040.
• Actual incompatibility if the wrong heat pump model is connected.
• Loose or incorrect wiring between the heat pump and the control module.

Click steps to track your progress.

1. 1

   Verify that the connected F2040 heat pump model is indeed compatible with the NIBE SMO 20.

2. 2

   Check all communication and power connections between the F2040 and the SMO 20.

3. 3

   Update the NIBE SMO 20 firmware to version v9586R2 or later.

4. 4

   If the alarm persists, contact your installer or NIBE support for further diagnosis.