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SM FP_Australia 2017/04 EN
E2
Failure in the inlet water temperature sensor
Component Characteristic: NTC Temperature sensor
Warning Message
Appliance keeps operation and code is flashing
Error code self reset
when temperature
decrease and appears
repetitively?
Yes
No
Problem solved?
Maximum inlet appliance is 60ºC
–
ensure existence of thermostatic
mixing valve before unit
Appliance installed as
a solar backup unit?
No
The inlet NTC sensor
is interrupted or in
short circuit
[R] > 30 kΩ or < 0.5 kΩ
[R] = ∞ Ω
NTC values out of
range
NTC interrupted
Replace NTC
Plug NTC connection
wire and turn ON unit
See spare part list
Refer to table with
values in Service
Manual
Yes
No
No
Yes
Yes
Maximum power very high
ATTENTION:
Blue wires
– inlet NTC
Ensure NTC wire is
attached in NTC sensor
Unplug Wires and measure
the NTC electrical
resistance [R] (Ω)
[R] Ω = Current Temp.
(ºC) ?
Replace Sensor
Yes
