88
EN
Troubleshooting
PROBLEM
HEATING
LAMP CHECKING ACTIONS
Cold Water
no temperature increase
OFF
1. Make sure power supplier is available, by checking house pow-
er supply voltage;
2. Make sure the “ELCB” button is not accidentally pressed.
3. Make sure the water heater is turned ON, by checking the knob
position.
4. Make sure the water pipe connection is correct (inlet on right,
outlet on left).
Water temp increased,
but not warm enough
ON
1. Make sure temperature setting is not too small, by increasing
the setting power level.
2. Make sure the water ow rate is not too high (over 6L/min), by
reducing the ow rate through the water regulation valve.
3. Measuring the actual voltage DURING heating to make sure
the voltage drop is not too big.
Increasing the diameter or reducing the length of the power
supply cable may resolve the problem.
4. Make sure the supplying voltage is not too small by checking
the house power supply voltage WITHOUT heating.
Flow rate
too small
--
1. Make sure the water pressure is high enough (the water tank
should be at least 3 meters higher than the water heater).
2. Make sure there is nothing blocking the water ow by cleaning
the built-in water lter inside the water valve.
3. Make sure there is nothing blocking the nozzles of the shower
head.
4. Make sure there is nothing blocking the ow of water from the
main water supply point to the inlet pipe.
House light ickering
when heating
ON
Measuring the actual voltage WHEN heating to make sure volt
-
age 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.
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