Commissioning; Appliance Handover; Troubleshooting; Display Options Led Diagnostic „Traffic Lights - Stiebel Eltron MEGABOOST Utilisation Et Installation

INSTALLATION

COMMISSIONING

11. Commissioning
DANGER: Electrocution
Commissioning must only be carried out by an authorised
contractor in accordance with safety regulations.
Damage to the appliance and the environment:
!
Open hot water faucet for a few minutes until water flow
is continuous and all air is purged from water pipes. The
appliance's plastic cover must be installed before the circuit
breaker is turned on.
Turn on circuit breaker to bring electrical power to the
appliance.
Turn the temperature selector clockwise and anti-clockwise, to
calibrate the temperature selector.
Adjust the water temperature to the desired level using the
knob on the front cover of the appliance.
Turn on hot water and wait twenty seconds until temperature
has stabilized.
Check the water temperature with your hand and make sure
that it does not feel too hot. Reduce temperature if this is
necessary.
Explain to the user how the appliance works and familiarise
him or her with its use.
Advise the user about possible hazards (hot water temperature
up to 140 °F (60 °C). Hand over these instructions, to be kept
for future reference.
A setting of 110°F (43°C) is recommended when the MegaBoost
is installed on the outlet of the tank. When installed on the tank
inlet, a setting of 120°F (49°C) is recommended.

11.1 Appliance handover

Explain the functions of the appliance to the user. Draw special at-
tention to the safety information. Hand the operating and installation
instructions to the user.

12. Troubleshooting

DANGER: Electrocution
To test the appliance, it must be supplied with power.
12.1 Display options LED diagnostic „traffic lights"
Display options
red illuminates in case of faults
yellow illuminates when the appliance is heating water
green flashing: The appliance is supplied with power
8 | MEGABOOST
1 LED diagnostic "traffic lights"

12.2 Fault table

Symptom Possible Cause
No hot water circuit breaker off
safety thermal cut-out
tripped
not enough flow rate to
activate appliance
Not enough hot water filter screen clogged
Water not hot enough water flow too high
If you are not able to resolve a problem please contact us, see
last side, before removing the appliance from the wall. STIEBEL
ELTRON is happy to provide technical assistance. In most in-
stances, we can resolve the problem over the phone.

12.3 Resetting the safety thermal cutout

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.
Safety
thermal
cutout
The safety thermal cutout on the DHC-E is designed to cut off electri-
cal power to the heating elements if water of too high a temperature
1
Solution
turn circuit breaker on
reset thermal cut-out
clean filter screen at appliance
clean faucet aerator or shower
head
clean filter screen at appliance
reduce water flow rate until
light on front cover stops blink-
ing
supply correct voltage to ap-
pliance
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