Faber FWH OTTIMO 501CH, Instruction Manual, Page: 10 / 12

9
4.1 Operating Of The Unit
4.2 Leakage Testing
4.3 To Adjust Water Flow
Switch on the power supply, the unit will take self-inspection for 2s, “ELCB”;
With
Pump
Bottom Left
"EARTH" blue indicator light will be on (well connected to the Ground). Green
indicator light will be on (under the condition of no electricity leakage). When
the water flow exceeds 1.2L/min, rotate the knob clockwise to switch on heating
power rotate switch, heating indicator light will be on, the unit start to work.
4. METHODS OF USING
When the water heater is working normally (including working state of PUMP),
press “TEST” button, if the leakage test circuit is no problem, “ELCB” green
indicator light will be blinking, and the unit will not heat. Press “RESET”, testing
will be canceled, and “ELCB” green indicator light will be on, the unit will be back
to working state set before. If the circuit leaks, press “RESET” button can’t
cancel leakage testing, “ELCB” indicator light is twinkling flicker, it means the
water heater has problems and can’t be used; all the buttons are invalid, heating
stopped, and pump will be closed. If "EARTH" blue indicator light is off, is
it means the heater cannot be connected to the Ground firmly. Please check the
Grounding before usage.
Rotate the handle of water flow adjusting valve to adjust the water flow.
4.4 Electricity Leakage Protection
When the electricity leakage testing circuit is working normally, if the leakage current is bigger than
certain value between 7.5mA and 15mA, “EARTH”
、
“ELCB” and “POWER” indicator light will be
twinkling flicker, no heating; it can only be used after the failure is excluded. (When electricity
leakage is tested, red and green indicator lights are all off, stop heating and close the pump
system.)
4.5 To Adjust Water Temperature
Rotate the handle of water flow adjusting valve to adjust to proper water flow. Adjust power by rotating
knob, clockwise rotate, power will be increased and water temperature increase accordingly or vice
versa.
NOTE
For first time using, ensure electrify after the unit is filled fully with water and there is
stable water flow comes out from shower head.
The electric water heater may be damaged if the water hardness is too high. To
guarantee the normal service life, please install and put it into use on condition that the
local water hardness is less than 450mg/L (CaCO3).
If the water flow is small and power is high while using the unit, outlet water temperature is rather
high; the unit will stop heating automatically. At this time, please lower the power and adjust the
water flow faster in order to avoid inconsistency of water temperature.
4.7 Use After Overheating Protection
When the unit is working under normal condition, press “PUMP”, The pump will start immediately and
while press again, the pump stops.
4.6 To Activate Pump Function (For SPLASH series)
Without
Pump
4.8 "EARTH" LED Indicator (Ground) after power on.
"EARTH" LED ON & "ELCB" ON
a) Water Heater and ground was well connected. Ground was in good condition.
"EARTH" LED OFF & "ELCB" ON
a) Water Heater detect no ground connected or ground was not in good condition.
b) However, water heater still can operate normal with his own performance.
c) Advice to check ground condition and repair ground if necessary so that water heater are idealy grounded.