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Indication
Insufficient or no hot
water
Earth leakage circuit
breaker is out
68
Cause
The water heater is off.
The temperature is set too low.
There is no supply voltage.
The hot water supply is used up.
A safety device is activated.
There is not enough water in the tank.
One of the heating elements is
defective.
Measure
Turn on the water heater (see 4.1).
Set the setpoint higher.
Make sure that:
-
the isolator is in ON position.
-
there is power on the isolator.
-
there is power to the electrical
connector block.
The measured voltage must be
400 V
(-15%, +10%).
AC
Reduce the hot water consumption. Wait
until the water heater heats up.
-
Make sure that the voltage between
the connections of the heating
elements is 230VAC (-15%, +10%).
-
Refer to indication "A safety device is
activated", next page.
-
Make sure that the water heater is
filled with water.
-
Measure the resistance value between
each heating element connection and
the outside of the tank. The value
must be infinite.
-
Determine which element is defective.
Installation, Maintenance and Service part
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