STIEBEL ELTRON DHM 3 - Page 40

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INSTALLATION
Troubleshooting
13. Troubleshooting
Problem  Remedy
The appliance will not
start despite the DHW
valve being fully open.
The aerator in the tap is
scaled up or dirty.
Clean and/or descale the
aerator or replace the
special aerator.
The sieve in the cold
water line is blocked.
Clean the sieve after
shutting off the cold
water inlet line.
The heater is faulty. Check the resistance of
the heating system and
replace the appliance if
required.
The safety pressure
limiter has responded.
Remedy the cause of the
fault. Isolate the appli-
ance from the power
supply and depressurise
the water line. Activate
the safety pressure
limiter.
Activating the safety pressure limiter
1
2
D0000039769
1 1-pole safety pressure limiter DHM 4 / DHM 6
2 2-pole safety pressure limiter DHM 3 / DHM 7