Stove Aqua Standby

Standby is one of the operating states of the stove and cannot be manually enabled or disabled: it activates automatically under certain conditions.

In the case of Aqua stoves [NG21], standby can be triggered for three reasons:

1. Room temperature: when the ambient temperature setpoint is exceeded by more than one degree.

2. Water temperature: upon reaching the set water temperature value, the stove switches to modulation. If this value is exceeded by 4°C (default value of parameter D23 in the thermostat section), the stove enters standby.
   Example: if the set water temperature is 65°C, the stove modulates at 65°C and goes into standby upon reaching 69°C.

   Standby due to boiler water temperature should not occur. If the stove enters standby for this reason, it means there could be a problem in the hydraulic system, such as insufficient hot water disposal, or that the stove is oversized relative to the system's needs.

   It is possible to delay entering standby by adjusting parameter D23. Increasing the D23 value will cause the stove to wait for a larger deviation before going into standby.
   Warning: a D23 value that is too high can cause the stove to exceed safety temperatures. Upon reaching 85°C, the stove will shut down.

3. Puffer temperature (only in configurations 2, 6, 10, and 11): upon reaching the set puffer temperature.