Brand: AEG
Category: Heating
Document Type: Installation Guide
Language: EN
Installation Guide for BS 35 / 45 / 60
Uploaded: April 20, 2026, 8 p.m.
Warranty Information
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Basic Operation
The AEG BS instantaneous water heater is electronically controlled and designed for heating shower water. The unit activates when water flow reaches 1.5-2 l/min, indicated by the "Power" light (A). The temperature is adjusted using the rotary control (B). Turning this control left allows for a cold shower without heating. An overheating protection device is included to cut off power if the unit gets too hot.
Troubleshooting and error codes
| Fault | Cause | Solution |
|---|---|---|
| No hot water despite flow volume setting at right-hand stop. | The water flow volume required for the unit to turn on has not been reached. - The shower head is blocked with dirt or limescale. - Flow volume too low |
- Clean shower head - Increase flow volume. |
| The unit is not working. Electricity supply and flow available. |
The water flow volume required for the unit to turn on has not been reached. - Filter in the cold water connection pipe blocked with dirt. - Water pressure not enough |
Clean the filter after shutting off the cold water intake - Increase mains pressure |
| "ELSD" Light on | - The safety device activated. | - Press "Reset" button |