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Troubleshooting Outdoor Components
EEV Troubleshooting
To check the operation of the EEV Valve in cooling
mode, using a digital thermometer record the
temperature of the input line and the output line
of the valve as indicated in the picture above.
With the compressor running, the input side of
the valve should have a higher reading then the
output side indicating that the valve is metering.
If the temperature readings are the same, the
valve is fully open and the valve is not metering.
Since the pressures and frequency are controlled by
the G10 technology of the outdoor circuit board,
there are no pressure checks that can be made.
Heating Mode
Cooling Mode
Input
InputOutput
Output
To check the operation of the EEV Valve in heating
mode, using a digital thermometer record the
temperature of the input line and the output line
of the valve as indicated in the picture above.
With the compressor running, the input side of
the valve should have a higher reading then the
output side indicating that the valve is metering.
If the temperature readings are the same, the valve
is fully open and the valve is not metering. Since
the pressures and frequency are controlled by
the G10 technology of the outdoor circuit board,
there are no pressure checks that can be made.
Resistance readings of EEV valve with wire plug disconnected from circuit board. Power to unit should be o
when making resistance readings. Readings below are approximate values and may vary slightly with dierent
outdoor models.
EEV Ω Orange Red Yel low Black Blue
Orange 94.6 Ω 94.8 Ω 94.4 Ω 47.0 Ω
Red 94.7 Ω 94.4 Ω 47.5 Ω
Yel low 94.6 Ω 47.7 Ω
Black 47.4 Ω
Blue
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