8 9
EN
Troubleshooting
PROBLEM
SCREEN
DISPLAY
ELCB
LAMP
HEATING
LAMP CHECKING ACTIONS
Cold Water
no temperature
increase
OFF OFF OFF
1. Ensure power supplier availability, by checking
house power supply voltage;.
ON ON OFF
1. Ensure water ow rate is big enough (over 1,2L/
min);
2. Ensure the water heater is turned ON, by rby
pressing ON/OFF button;
3. Ensure product is not in cold water model;
4. Ensure water pipe connection (inlet on right, out
-
let on left). g 5
ON ON ON
Ensure water ow rate is not too big (over 6L/min),
by reducing the ow rate through water supply
valve;
ON OFF OFF
Ensure “TEST” button is not wrongly pressed, press
the “reset” button to light ON the ELCB lamp.
display "E*" ON OFF Stop use the water heater, call service.
-- Blinking -- Stop use the water heater, call service.
Water temp
increased,
but not warm
enough
ON ON ON
1. Increase temperature/power setting.
2. Ensure the water ow rate is not too big (over 6L/
min), by water supply valve; if ow rate too big,
outlet water will not able to reach the setting
temperature;
3. Measure the actual voltage WHEN heating to
make sure voltage drop not too big. By increase
section, or reduce length of the power supply ca
-
ble could improve.
4. Ensure power supplier voltage not too small, by
checking house power supply WITHOUT heating.
Flow rate
too small
-- -- --
1. Ensure the water pressure is big enough to pro-
vide comfortable water ow rate.
2. Ensure there are no dirty, by clean the lter, which
is built in the water supply valve. Fig. 5, B1-B2-B3
3. Ensure there are no bottleneck in the inlet pipe
between water heater to the main water supply
point;
House light
ickering when
heating
ON ON ON
Measuring the actual voltage WHEN heating to
make sure voltage drop not too big. (Voltage drop
should be less than 10%).
By increase section, or reduce length of the power
supply cable could solve the ickering problem.