Troubleshooting; Display Options For Led Diagnostic Traffic Light; Fault Table - STIEBEL ELTRON DHB-E 11 SLi electronic Bedienung Und Installation

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
The appliance does not start.
Inadequate flow rate.
The set temperature is not achieved.
Heating does not switch on.
No hot water and no traffic light display.
Traffic light display: Green flashing
No hot water at flow rate
> 3 l/min.
The set temperature is not achieved.
Traffic light display: Yellow constantly ON;
green flashing
No hot water at flow rate > 3 l/min.
Traffic light display: Yellow constantly ON;
green flashing
Set temperature is not achieved.
Traffic light display: Red constantly ON; green
flashing
No hot water.
Required temperature > 45 °C is not achieved. The cold water inlet temperature > 45 °C.
30 | DHB-E SLi | A electronic
Cause
The shower head / aerators are scaled up.
The sieve in the appliance is dirty.
One phase down.
The air sensor detects the presence of air in the water
and briefly switches the heater off.
The MCB/fuse has responded/blown.
Safety pressure limiter AP 3 has tripped.
The PCB is faulty.
Flow sensor DFE is not plugged in.
Flow sensor DFE is faulty.
The set value transducer or connecting cable is faulty, or
the connecting cable is not attached.
Temperature limiting is activated.
The high limit safety cut-out has responded or its lead
is broken.
The heater is faulty.
The PCB is faulty.
The outlet sensor is faulty.
Appliance is operating at its output limit.
The outlet sensor is faulty.
The cold water sensor is faulty.
Remedy
Descale or if necessary replace the shower head /
perlators.
Clean the strainer.
Check the MCB/fuse in your fuse box.
The appliance restarts after one minute.
Check the MCB/fuse in your fuse box.
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".
Check the PCB and replace if necessary.
Plug the flow sensor plug back in.
Check the flow sensor and replace if necessary.
Attach the connecting cable; replace the set value
transducer if required.
Disable temperature limiting.
Check the high limit safety cut-out and replace if
necessary.
Measure the resistance of the heater and replace if
necessary.
Check the PCB and replace if necessary.
Check the connection and replace the outlet sensor
if necessary.
Reduce the flow rate or install the flow limiter.
Check the connection and replace the outlet sensor
if necessary.
Check the PCB and replace if necessary.
Reduce the cold water inlet temperature to the
appliance.
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