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ENGLISH
WWW.STIEBEL-ELTRON-USA.COM DHC | 7
INSTALLATION
TROUBLESHOOTING
9. Troubleshooting
Symptom Possible cause Solution
No hot water but audible click can be heard when
water is turned on.
Circuit breaker off Circuit breaker on.
Safety thermal cut-out tripped Reset thermal cut-out.
Heater may be undersized See section 11.3, “Temperature increase above ambi-
ent water temperature”, pg. 9
No hot water and no audible click can be heard when
water is turned on
Water flow too low to activate flow switch
Clean faucet aerator.
Open shut-off valve completely.
Increase flow by opening flow adjustment screw
(turn counterclockwise).
Clean filter screen at DHC unit. See section 12, “Spare
parts”, pg. 11.
Water not warm enough
Water flow too high
Reduce water flow by closing flow adjustment screw
(turn clockwise). See section 11.3, “Temperature in-
crease above ambient water temperature”, pg. 9
Voltage too low Supply correct voltage to unit.
If you are not able to resolve a problem please contact us toll
free at 800-582-8423 before removing the unit from the wall.
STIEBEL ELTRON is happy to provide technical assistance. In
most instances, we can resolve the problem over the phone.
Flow adjustment screw
To lower the water temperature or increase water flow, open the
flow adjustment screw by turning counterclockwise
(-). This de-
creases the water temperature by increasing water volume.
To raise the water temperature or reduce water flow, close the
flow adjustment screw by turning clockwise
(+). This increases
the water temperature by decreasing water volume.
26_02_02_1358
Reset button from safety thermal cut out
DANGER: Electrocution
Do not attempt to reset the safety thermal cutout of
this water heater unless power to the unit has been
completely shut off at the circuit breakers.
26_02_02_1357
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