Recommissioning; Shutting Down; Troubleshooting - STIEBEL ELTRON DHE 21 SL LABS Bedienungs Und Installationsanleitung Handbuch

INSTALLATIoN

Shutting down

10.2 Recommissioning

Material losses
!
Following an interruption of the water supply the appli-
ance must be recommissioned by carrying out the follow-
ing steps, in order to prevent the destruction of the bare
wire heating system.
f Disconnect the appliance from the power supply by f
removing the fuses/tripping the MCBs.
f Open the tap for one minute until the appliance and f
its upstream cold water inlet line are free of air.
f Switch the mains power back ON again. f
11. Shutting down
f Isolate all poles of the appliance from the power supply. f
f Drain the appliance (see chapter "Maintenance"). f

12. Troubleshooting

WARNING Electrocution
In order to check the appliance, it must be supplied with
power.
Push-fit connections on the PCB
3
2
1
1 Diagnostic traffic light (3 LEDs)
2 Flow sensor DFE
3 Motorised valve
4 High limit safety cut-out STB
5 Outlet sensor NTC
6 Safety switch AE 3; plug-in connection secured with locking
tab.
www.stiebel-eltron.com
4
5
6
DHE SL LABS | 29