FAQ

Contact your local Alde dealer or service partner. You can also reach out to Alde directly—we’re here to help.

If your Alde system is new or has just been serviced, the technicians may have left your 12 V inline circulation pump on Speed 4–5 for bleeding. This can be noisy. Lower the speed on the pump mounted on the side of the Alde boiler. Speed 2–3 is ideal for most installations.

In the Alde Compact 3030/4000 D Plus you have unlimited hot water, as long as there is water in the fresh water tank.

The standard Alde Compact 3030/4000 D has a hot water tank with a volume of about 10 litres of hot water at >50°C. When the hot water is mixed with cold water (approx. 10 °C) to the normal user temperature of approx. 38 °C, this results in approx. 12 litres of hot water every 30 minutes.

The colder the water, the longer it takes to heat up. If 230 V electric cartridge is used instead of gas/diesel, the capacity is slightly reduced. The “extra hot water” function on the Alde control panel raises the water temperature to > 65°C for 30 minutes. This means ≈ 15 litres of heated water, mixed and ready.

Set the desired room temperature to well below ambient on the control panel. As the Alde Compact is a combination boiler, it heats both heating fluid and hot water simultaneously. If the desired temperature is set about 5°C below the ambient temperature on the control panel, the heating fluid will not circulate to the convectors because the circulation pump will be stopped.

For 3010/3020: Under the pump operation symbol on the control panel, THERM must be activated (green).
For 3030/3030 Plus: Auto must be indicated at the pump.

Make sure the heating system is vented. Make sure that ventilation slots in furniture are not blocked. Use maximum power on the electric cartridge and gas/diesel during heating. Avoid running hot water for showers etc. until the vehicle is heated. Do not let the temperature in the vehicle drop below 10°C during the day/evening.