EQUATION EQ3 Série Manuel D'installation, D'utilisation Et D'entretien page 83

If the thermal cut-off has not tripped, carry out the following steps:
Please note, the following operations must be carried out only by
a qualified professional. A multimeter must be used to measure the voltages.
It is dangerous to use a tester screwdriver since it is not sufficiently reliable
to check whether or not the voltage is present.
III - Measure the voltage with a multimeter at each of the following points:
3
Point
Description of power connectionn
At the connection of the water heater
1
to the building mains supply (wall
socket output)
2
At the thermal safety device outlet
On the electrical heating elements: at
3
least one of the two elements must be
powered
If the voltage is correct on all the above points, cut power, disconnect the
heating elements (point 3) and measure their resistance. If the value is 0 ohm,
the resistances have failed: they need to be replaced.
2
1
83
3
If there is no currentt
Problem with power supply
to be corrected by an
electrician
Thermal safety device
out of service
Electronic panel
or control unit thermostat
(HMI) out of service
EN