Service Information; Troubleshooting - Stiebel Eltron DHB-E 11/13 LCD Utilisation Et Installation

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INsTALLATIoN

service information

14. Service information
Overview of connections
1
2
3
1 Flow limiter
2 Flow sensor

15. Troubleshooting

WARNING Electrocution
To test the appliance, it must be connected to the power
supply.
Note
The diagnostic traffic light is displayed when water flows.
Diagnostic traffic
fault
light
No LED illuminates.
The appliance does not heat
up.
Green flashes, yellow
No DHW
off, red off
Green flashes, yellow
The display is completely off. Loose set value transducer cable between PCB and
on, red off
Green flashes, yellow
No DHW, the outlet temper-
on, red off
ature does not match the set
value.
Green flashes, yellow
No DHW, the outlet temper-
off, red on
ature does not match the set
value.
36
| DHB-E LCD
3 High limit safety cut-out, automatic reset
4 NTC sensor
5 Pin strips for connected load and anti-scalding protection
6 Programming unit plug-in position
7 Diagnostic traffic light
4
5
Appliance cover retainer
6
7
Indicator options for diagnostic traffic light (LED)
Cause
There is no power supply.
The PCB is faulty.
The shower head / aerator are scaled up.
The strainer in the cold water inlet is dirty.
The flow meter is not plugged in.
The flow meter is faulty.
The PCB is faulty.
display.
The programming unit connecting cable is faulty.
The programming unit PCB is faulty.
The downstream tap is faulty.
Internal anti-scalding protection is activated.
The heating system is faulty.
The outlet detector is faulty.
The PCB is faulty.
Appliance is operating at its output limit.
The high limit safety cut-out is not enabled.
The high limit safety cut-out is not connected.
The high limit safety cut-out has tripped.
The high limit safety cut-out is faulty.
Red
Illuminates in the event of a fault
Yellow
Illuminates in heating mode/flashes when output restric-
tion reached
Green
Flashing: Appliance connected to power supply
remedy
Check the fuse/MCB in your fuse box/distribution
board.
Replace the test assembly.
Descale or replace the shower head / aerator if nec-
essary.
Clean the strainer.
Reconnect the connecting cable on the PCB.
Replace the flow meter.
Replace the test assembly.
Check the set value transducer cable and plug the
cable into the programming unit and/or PCB.
Check the connecting cable and replace if required.
Check the programming unit and replace if required.
Replace the faulty tap.
Deactivate the internal anti-scalding protection.
Replace the test assembly.
Replace the outlet sensor.
Replace the test assembly.
Reduce the flow rate. Install the flow limiter.
Activate the safety switch.
Reconnect the connecting cable on the PCB.
Remedy the cause and activate the safety switch.
Replace the high limit safety cut-out.
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