Power Connection - Samsung AE090MNYDEH Installation Manual

Power connection

NOTE
• It is important that the 3-way valve is fitted correctly: When the 3-way valve is idle (not activated) the space heating circuit
should be selected, when the 3-way valve is activated the sanitary heating circuit should be selected.
• The booster heater that will be connected should be 3 kW or lower.
Troubleshooting
IMPORTANT: All maintenance or repair work must be executed by an approved installer.
Problem
Hot water is not coming out.
Heating is not working
Water is not warm enough
1 phase
N L N L N L
230 V~
DHW Tank
Possible cause
No power supply to the water heater
The thermostat may be set too high
and cause the fuse or safety cut-off to
operate.
Heating element or internal electrical
wiring is out of order.
Thermostat is set too low.
Heating element or the internal
electrical wiring is partially out of order.
UX mixing valve(fitted on top) is
incorrectly adjusted.
3 phase
N L N L L1(R) L2(S) L3(T) N
380 V~
DHW Tank
Check if there is any power on
the power supply terminal on the
thermostat.
Reduce thermostat setting by 5 °C and
press the reset button.
Check if there is any power on the
power supply on the connector of the
heating element between black and
yellow/green wires. If this is OK, press
the reset button on the fuse/safety
cut-off.
Adjust the thermostat up using a
standard screwdriver.
Check the resistance of the heating
element on the connector of the
heater bundle, and the condition of the
internal wiring.
Adjust the UX mixing valve correctly to
the preferred temperature.
Solution
45
English