INSTALLATION
Troubleshooting
46 | DEM www.stiebel-eltron.com
LED indicators
D0000103910
321
1 Lights up red in the case of a fault
2 Indicator yellow in heating mode / flashing when the output
limit is exceeded
3 Flashes green if the PCB is receiving power
Activating the safety pressure limiter
D0000104220
1
2
1 1-pole safety pressure limiter DEM 4 / DEM 6
2 2-pole safety pressure limiter DEM 3 / DEM 7