H5, Indoor Unit. (Ipm Protection) - Electrolux KSV26HRC Service Manual

H5, Indoor Unit. (IPM Protection)

Indoor Heating LED, flash 5 times.
Yellow-D5 LED, Outdoor unit Off.
Orange-D6 LED, Outdoor unit Flashing.
Green-D16 LED, Outdoor unit Off.
Red-D30 LED, Outdoor unit On.
# Disconnect the mains power supply & the compressor from the outdoor PCB. Then measure the
resistance between the following points:
Neutral to Comp-U = Open Circuit.
Neutral to Comp-V = Open Circuit.
Neutral to Comp-W = Open Circuit.
Positive to Comp-U = Open Circuit.
Positive to Comp-V = Open Circuit.
Positive to Comp-W = Open Circuit.
Note: All the above resistance readings should read Open circuit.
Note: If any of the above readings are a Short circuit, replace the outdoor PCB.
# While the unit is in operation mode (Heating or Cooling), check the DC output on the outdoor
PCB D10-Diode, as illustrated below.
D10-Diode = 15V-DC.
Note: If reading is <13.5V-DC or >18V-DC, replace the outdoor PCB.
# If the above reading are okay, remove the spade terminals from the compressor & measure the
resistance value of each winding.
Note: The resistance value should be the same value across any terminal combination.
Relevant test points for IPM module.
Common, Start & Run terminal points.
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