32
33
ID
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 flow 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). fig 5
ON
ON
ON
Ensure water flow rate is not too big (over 6L/min),
by reducing the flow rate through regulation valve;
ON
OFF
OFF
Ensure “TEST” button is not wrongly pressed, by
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 flow rate is not too big (over 6L/
min), by regulation valve; if flow rate too big, out-
let water will not able to reach the setting temper-
ature;
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 flow rate.
2. Ensure there are no dirty, by clean the filter, which
is built in the regulation 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
flickering 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 flickering problem.
