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Coil Check; Fan Check - Siemens EH70650 Repair Instructions

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7.5

Coil check

The inductor has no operational parts other than the NTC temperature
sensor, wherefore it is not usually a source of breakdowns.
Nevertheless, the procedure presented below can be followed:
The inductor must be checked without power connected.
Remove the mica sheet carefully so that it does not become
damaged, and perform a visual inspection. Check that there
are no burned areas.
Check the continuity of the inductor using a tester (<1 ohm).
Replace the mica sheet, being careful not to damage it.
Do not replace the inductor unless burned zones are observed or
there is no electrical conductivity.
206_58300000105199_ara_en_h – 15.03.a
7.6

Fan check

Check to see if the fan is blocked.
The working voltage is 24 VDC.
It is possible to check the fan using an adequate direct
voltage.
The fan cannot be checked by measuring its resistance, given that it
has a diode factory installed in its own electronics.
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