H2 Heater Coil Check

H2 Heater Coil Check

The attached PDF displays the test points and proper readings to determine if your H2 heater needs to be replaced. 

All these test points need to be measured with the instrument off, cooled down, and the instrument disconnected from power.

 

The pictures show the heater being tested while removed from the instrument, it is not necessary to remove the heater from the instrument as long as the heater has been powered off and cooled down.

You will need an ohm meter for this test.  If the ohm readings fall outside of the tolerances on any of the tests then your H2 heater is bad and you will need to replace the H2 heater.  Here are the instructions to replace the H2 Heater.