Service Information; Troubleshooting - Stiebel Eltron DEL 18 Plus Utilisation Et Installation

INsTALLATIoN

service information

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

15. Troubleshooting

WARNING Electrocution
To test the appliance, it must be connected to the power
supply.
Display indication Cause
E1 | Spanner Fault in electronic safety circuit.
E2 flashing Break or short circuit in inlet sensor.
E3 flashing Short circuit in outlet sensor.
Diagnostic traffic fault
light
No LED illuminates. The appliance does not heat
up.
Green flashing, yellow No DHW
off, red off
Green flashing, yellow The display is completely off. Loose set value transducer cable between PCB and
on, red off
Green flashing, 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, E1 displayed ature does not match the set
value.
36 | DEL Plus
2 Flow sensor
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
4
7 Diagnostic traffic light
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 sensor is faulty.
The PCB is faulty.
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.
Note
The diagnostic traffic light is displayed when water flows.
Red Illuminates in the event of a fault
Yellow Illuminates in heating mode/flashes when output limit
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 necessary.
Check the programming unit and replace if neces-
sary.
Replace the faulty tap.
Deactivate the internal anti-scalding protection.
Replace the test assembly.
Replace the outlet sensor.
Replace the test assembly.
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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