Danfoss EFET 130 Instruction page 9

The measured value should be within the specifi ed range
according to the technical specifi cations.
If not, replace the NTC sensor.
Fault: Constant heat
Floor sensor interrupt
If disconnection of the external sensor (NTC) occurs, the
thermostat will be constant on (activated thermostat – red
light).
Disconnect the external NTC sensor at the terminal NTC, on
the thermostat.
Connect an ohm meter to the NTC sensor, measuring the
ohm value.
The measured value should be within specifi ed range
according to the technical specifi cations.
If not, replace the NTC sensor.
Relay constantly on
Measure the voltage at terminal 1 & 2, (non-activated ther-
mostat, no light or green light). There should be no voltage at
terminal 1 & 2. If voltage is measured replace the thermostat.
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