EC-04 — Tank preheating

Was bedeutet EC-04 ?

The unit is currently in the process of preheating the hot water tank.

• Normal operation
• Scheduled heating cycle
• Thermostat activation

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1. 1

   This is a normal operating status indicator. No action is typically required.

2. 2

   Monitor the tank temperature to ensure it reaches the set point.

3. 3

   Check the schedule settings if preheating occurs unexpectedly.

4. 4

   Refer to the user manual for specific operational phases.