STIEBEL ELTRON DHB-E 11 SLi electronic, Эксплуатация и установка, Страница: 30 / 148

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Installation
Troubleshooting
13. Troubleshooting
WARNING Electrocution
To test the appliance, it must be 'live'!
13.1 Display options for LED diagnostic traffic light
Possible indications
Red Illuminates in case of faults
Yellow Illuminates in heating mode
Green Flashing: appliance is supplied with mains power
13.2 Fault table
Fault / diagnostic traffic light LED dis-
play
Cause Remedy
The appliance does not start. The shower head / aerators are scaled up. Descale or if necessary replace the shower head /
perlators.
Inadequate flow rate. The sieve in the appliance is dirty. Clean the strainer.
The 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
heater.
Activate the safety pressure limiter at flow pres-
sure by pressing the reset button; see also chapter
"Commissioning".
The PCB is faulty. Check the PCB and replace if necessary.
Traffic light display: Green flashing
No hot water at flow rate
> 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 > 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 heater is faulty. Measure the resistance of the heater 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 is operating 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 > 45 °C. Reduce the cold water inlet temperature to the
appliance.