Indication
Cause
Measure
Insufficient or no hot
water
The water heater is off.
Turn on the water heater (see 4.1).
The temperature is set too low.
Set the setpoint higher.
There is no supply voltage.
Make sure that:
-
the isolator is in ON position.
-
there is power on the isolator.
-
there is power to the electrical connec-
tor block.
The measured voltage must be
400 V
AC
(-15%, +10%).
The hot water supply is used up.
Reduce the hot water consumption. Wait un-
til the water heater heats up.
A safety device is activated.
-
Make sure that the voltage between
the connections of the heating ele-
ments is 230VAC (-15%, +10%).
-
Refer to indication "A safety device is
activated", next page.
Earth leakage circuit
breaker is out
There is not enough water in the tank.
-
Make sure that the water heater is fil-
led with water.
One of the heating elements is defec-
tive.
-
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.
A safety device is acti-
vated
The main safety thermostat (G1) is acti-
vated
-
Make sure the water heater is com-
pletely filled.
-
Tap off water, so the temperature
drops in the water heater.
-
Make sure all connections are connec-
ted correctly (refer to the wiring dia-
gram).
-
Use the white button to manually reset
the thermostat.
-
If necessary, replace the safety ther-
mostat (G1).
The row safety thermostat (G2) is acti-
vated.
-
Tap off water, so the temperature
drops in the water heater.
-
Make sure all connections are connec-
ted properly (refer to the wiring dia-
gram).
-
Use the red button to manually reset
the thermostat.
-
If necessary, replace the safety ther-
mostat (G2).
11.1.2
Displayed errors
Note
For the coding of the connections, refer to the Electrical wiring diagram (see A.5).
n
68
Installation, Maintenance and Service part
EN
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