Bedienungsanleitung Stiebel Eltron DHB-E 21 SLi electronic (Seite 14 von 20) (Englisch)

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

13. Troubleshooting

WARNING Risk of electrocution

To test the appliance, it must be supplied with power.

13.1 Display options LED diagnostic "trafﬁc lights"



red illuminates in case of faults

yellow illuminates when the appliance is heating water

green flashing: The appliance is supplied with power

13.2 Fault table





 

The appliance does not start. The shower head / perlators are scaled up. Descale or if necessary replace the shower head /

perlators.

Inadequate flow rate. The sieve in the appliance is dirty. Clean the sieve.

Set temperature is not achieved. One phase down. Check the MCB/fuse in your fuse box.

Heating 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 MCB/fuse in your fuse box.

Safety pressure limiter AP 3 has tripped. Remove the cause of the fault (e.g. faulty pressure

washer).

Protect the system against overheating by opening

a draw-off valve downstream of the appliance for

1 minute. This depressurises and cools down the

heating system.

Activate the safety pressure switch at flow pressure

by pressing the reset button.

The PCB is faulty. Check the PCB and replace if necessary.

Traffic light display: Green flashing

No hot water at flow rate of

>3l/min.

Flow sensor (DFE) is not plugged in.

Plug the flow sensor plug back in.

Flow sensor DFE is faulty. Check the flow sensor and replace if necessary.

The set temperature is not achieved.

The set value transducer or connecting cable is faulty or

the connecting cable is not attached.

Attach the connecting cable; replace the set value

transducer if required.

Temperature limiting is activated. Disable temperature limiting.

Traffic light display: Yellow constantly ON;

green flashing

No hot water at flow rate of >3l/min.

The high limit safety cut-out has responded or its lead

is broken.

Check the high limit safety cut-out and replace if

necessary.

The heating system is faulty. Measure the resistance of the heating system and

replace if necessary.

The PCB is faulty. Check the PCB and replace if necessary.

Traffic light display: yellow constantly ON;

green flashing

The outlet sensor is faulty. Check the connection and replace the outlet sensor

if necessary.

Set temperature is not achieved. Appliance operates at its output limit. Reduce the flow rate or install the flow limiter.

Traffic light display: red constantly ON; green

flashing

The outlet sensor is faulty. Check the connection and replace the outlet sensor

if necessary.

No hot water The cold water sensor is faulty. Check the PCB and replace if necessary.

Required temperature > 45 °C is not achieved. The cold water inlet temperature exceeds 45 °C. Reduce the cold water inlet temperature to the

appliance.

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