Daikin Condensing Unit DX13SA0361AC

WARNING: HIGH VOLTAGE! Disconnect ALL power before servicing or installing. Multiple power sources may be present. Failure to do so may cause property damage, personal injury or death.

Motor leads disconnected from 6-circuit fan motor wire harness

Connect a voltmeter between circuit 6 and circuits 3 (low speed) or 1 (high speed). NOTE: Circuit 6 is connected directly to 24VAC.

System energized at low or high stage

WARNING: Line Voltage now present.

Measured voltage between circuit 6 and circuits 3 or 1

Voltage measurement indicates the relay contacts are closed

Replace the control if the relay checks open when it should be closed. See following notes and cautions.

NOTE: Ensure any ON delays have expired before making voltage measurements

Warning: This procedure requires trained personnel with PPE!

Fuse, circuit breaker, ground fault protective device tripped?

If the device has tripped, an electrical problem exists and must be found and corrected.

Check the circuit protective device rating. It should coincide with that marked on the equipment nameplate.

With the terminal protective cover in place, replace the fuse or reset the circuit breaker ONE TIME ONLY.

If it opens again, DO NOT continue to reset.

Disconnect all power to unit, making sure that all power legs are open.

DO NOT remove protective terminal cover. Disconnect the three leads going to the compressor terminals at the nearest point to the compressor.

Identify the leads and using an ohmmeter on the R x 10,000 scale or the highest resistance scale on your ohmmeter check the resistance between each of the three leads separately to ground (such as an unpainted tube on the compressor).

WARNING: HIGH VOLTAGE! Disconnect ALL power before servicing or installing. Multiple power sources may be present. Failure to do so may cause property damage, personal injury or death.

If all tests fail to show the cause for failure, proceed with the following steps:

Unit wiring removed from disconnect switch and test cord wired to the disconnect switch

NOTE: The wire size of the test cord must equal the line wire size and the fuse must be of the proper size and type.

Protective terminal cover in place, three leads to the compressor terminals connected

WARNING: HIGH VOLTAGE! Disconnect ALL power before servicing or installing. Multiple power sources may be present. Failure to do so may cause property damage, personal injury or death.

Wire leads disconnected from terminals 2 and 4 of Fan Relay Cooling and 2 and 4, 5 and 6 of Fan Relay Heating

Ohmmeter test between 2 and 4 - should read open. Test between 5 and 6 - should read continuous.

WARNING: Line Voltage now present.

Ohmmeter test between 2 and 4 - should read continuous . Test between 5 and 6 - should read open.

If not as above, replace the relay.

Sign off on the Fan Relay Contact Check

WARNING: Discharge capacitor through a 20 to 30 OHM resistor before handling.

NOTE: You can do this test with a multi-meter if you have a Capacitance meter on your multi-meter.

Capacitor removed from the circuit

Multi-meter set to 'Capacitance'

Capacitor terminals connected to the multi-meter leads

Enter the reading from the multi-meter

Enter the actual value of the capacitor (i.e. the printed value on the capacitor)

Is the reading near to the actual value of the capacitor?

If the reading is significantly lower or none at all, is the capacitor replaced?