MSEX0025_rev01
14
Ohmic Value of Defrost Heater
MODEL Power ( W )
220-240V / 50Hz)
WRM38, WBM39, WRM44, WBM46 225 W +/-20W
236,7 ôhms to 276,2 ôhms
WRM34, WBM35 190 W +/- 20W
280,3 ôhms to 327,0 ôhms
If you find values different from those shown in the table above, replace the Defrost Heater (remember to
check also for the new Resistance ohm value).
Perform the self-test again and check the values shown on the Ammeter Pliers display.
B- Defrost Bimetal Test
With the contact bimetal closed (product cool, preferably below zero), do it the continuity test between their
points, before start the Gauge Test, it’s one the way to check the eventual failure in the Termofuse/ Bimetal
b.1) With the product cool (preferably below zero), secure the thermocouple of a Temperature Sensor to the
body of the defrost Bimetal that was secured to the evaporator.
b.2) Replace the freezer rear and front covers, and then place the
Ammeter Pliers at one of the power-input wires.
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