Goodman Condensing Unit GSX130361A

Discharge capacitor through a 20 to 30 OHM resistor before handling

Calculate the capacitance using the formula: Capacitance (MFD) = 2650 X Amperage / Voltage

Remove outer case, control panel cover, etc., from unit being tested.

Voltage Measurement with Power On

Ensure line voltage is present.

Measure the voltage across terminals L1 and L2 of the contactor for the condensing unit or at the field connections for the air handler or heaters.

Measure the voltage across the L1 and L2 lugs on the unitary (UC) control for ComfortNet Ready Condensing Units.

Describe any issues found (e.g., open wiring, open fuse(s), no power).

Disconnect all power sources before servicing or installing

Verify multiple power sources are disconnected

Remove control panel cover to gain access to transformer

Check voltage across secondary voltage side of transformer (R to C) using a voltmeter

Is there voltage across the secondary side?

Check for 24 volts at thermostat wires C and Y in the condensing unit control panel

Is there voltage at thermostat wires C and Y?

Describe any issues found with the thermostat, wiring, or external transformer source

Check the continuity of the thermostat and wiring

Describe repairs or replacements made

Set fan selector switch at thermostat to 'ON' position

Check for 24 volts at wires C and G

Remove the remote bulb of the expansion valve from the suction line

Cool the bulb in a container of ice water

Record the suction pressure after cooling the bulb

Record the suction temperature after cooling the bulb