Thermostat output: (terminal 1 & 2)
Measure the voltage at terminal 1 & 2, (activated thermostat, red
light). The reading should be the same as previously
measured at terminal 3 & 4.
If the reading is ok, continue to the next step, if not – replace the
thermostat.
Heating cable: (terminal 1 & 2)
Disconnect the heating cable from terminal 1 & 2 on the thermo-
stat.
Measure the resistance in the heating cable with an ohm
meter, it is now possible to calculate the installed wattage, using
the formula below:
External sensor input: NTC – only for devireg 130 and
devireg 132
Disconnect the external NTC sensor at the terminal NTC, on the
thermostat.
Connect an ohm meter to the NTC sensor, measuring the ohm
value.
P = = W (at 230 V~)
U
2
R
230
2
R
=
8
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