STIEBEL ELTRON DHM 3 Operation And Installation page 40

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