STIEBEL ELTRON HDB-E 13 AU User Manual

12 |HDB-E AU www.stiebel-eltron.com
INSTALLATION
Troubleshooting
14. Troubleshooting
WARNING Electrocution
In order to check the appliance it must be connected to
the power supply.
14.1 Indicator options for LED diagnostic traffic light
Indicator options
Red Illuminates in the event of a fault
Yellow Illuminates during heating mode
Green Flashing: Appliance is supplied with mains power
14.2 Fault table
Fault / diagnostic traffic light LED display Cause Remedy
The appliance does not start. The shower head / aerators are scaled up. Descale or if necessary replace the shower head/
aerators.
The flow rate is too low. The strainer in the appliance is dirty. Clean the strainer.
The temperature is not achieved. One phase down. Check the fuse/MCB in your fuse box/distribution
panel.
The heating system does not switch on. The air sensor detects the presence of air in the water
and briefly switches the heater off.
The appliance restarts after one minute.
No hot water and no traffic light display.
The MCB/fuse has responded/blown. Check the fuse/MCB in your fuse box/distribution
panel.
The safety pressure limiter (see chapter "Installation/
Specification/ Wiring diagram" has switched off.
Remove the cause of the fault (e.g. faulty pressure
washer).
Protect the heating system against overheating by
opening a draw-off valve downstream from the ap-
pliance for one minute. This depressurises and cools
down the heating system. Activate the safety pressure
limiter at flow pressure by pressing the reset button
(see also chapter "Installation/ Commissioning/ Ini-
tial start-up").
The PCB is faulty. Check the PCB and replace if required.
No hot water at flow rate of >2.3l/min.
Traffic light display: green flashing.
The PCB is faulty. Check the PCB and replace if required.
The flow sensor is not plugged in. Plug the flow sensor plug back in.
The flow sensor is faulty. Check the flow meter/flow sensor and replace if re-
quired.
No hot water at flow rate of >2.3l/min.
Traffic light display: yellow constantly on; green
flashing.
The high limit safety cut-out has responded (see
chapter "Installation/ Specification/ wiring diagram"
or has suffered a break in continuity.
Check the high limit safety cut-out and replace it if
required.
The heating system is faulty. Check the resistance of the heating system, and re-
place if required.
The PCB is faulty. Check the PCB and replace if required.
No hot water.
Traffic light display: red constantly on; green flashing.
The cold water inlet temperature exceeds 35°C. Reduce the cold water inlet temperature to the ap-
pliance.
The cold water sensor is faulty. Check the PCB and replace if required.

STIEBEL ELTRON HDB-E 13 AU Specifications

General

Brand	STIEBEL ELTRON
Model	HDB-E 13 AU
Category	Water Heater
Language	English