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Voltage  Readings

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Voltage  Readings To  begin,  set  your  multimeter  to  voltage;  ensure  the  power  is  on  and  all  wires  are  connected to  the  component  being  tested.    The   four   important   troubleshooting   procedures   that   apply   to reading  voltage  are  as  follows: 1.  Place  the  meter  probes  are  on  a  path.  If  there  is  a  voltage  reading,  the  path  is  open. Place  one  meter  probe  on  the  left  side of  the  CR  contact  and  the  other  probe  on  the left  side  of  the  HP  switch. If   you   obtain   a   voltage   reading,   this   indicates that   either   the   path   is   open   or   the   contacts are   open. 2.  Place  the  meter  probes  on  a  path.  If  there  is  no-voltage  reading,  the  path  is  closed. Place  one  meter  probe  on  the  left  side of  the  CR  contact  and  the  other  probe  on  the left   side   of   the   HP   switch.   If   you   obtain   no voltage  reading,  the  path  is  closed. 3.   Place   the   meter   probes   across   a   load.   If   a   voltage   reading   is   obtained,   the   load   is recieving   current.   When   the   load   is   NOT   operating,   you   should   check   for   a   grounded winding  and  for  winding  resistance. Place   one   meter   probe   on   the   right side  of  the  LLP  switch  and  the  other  probe on   the   left   side   of   IT.   If   you   obtain   a voltage   reading,   the   compressor   contactor   is energized   and   the   compressor   should   be running. 14-18(C)



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