Daikin Condensing Unit DX13SA0364AA

Warning: This procedure requires trained personnel with PPE!

Fuse, circuit breaker, ground fault protective device tripped?

If the protective device has tripped, report the issue and stop the procedure

Circuit protective device rating matches equipment nameplate?

If the rating does not match, report the issue and stop the procedure

Protective terminal cover intact?

Three leads going to the compressor terminals disconnected?

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

Relay contacts are closed (0VAC)

A voltage measurement of approximately 24VAC indicates the relay is open. 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: 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.

Heater quantity matches the spec sheet

Disassemble and remove the heating element(s)

Visual inspection of the heater assembly for any breaks in the wire or broken insulators

Using an ohmmeter, test the element for continuity - no reading indicates the element is open

Sign off on the heater element check

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.

High pressure control capillary senses the pressure in the compressor discharge line

Enter the reading from the ohmmeter across terminals of high pressure control

WARNING: Line Voltage now present.

Cardboard placed in front of the condenser coil

Enter the pressure at which the high pressure control cuts-out

High pressure control operating normally

Does the control need to be replaced?

A run capacitor is wired across the auxiliary and main windings of a single phase permanent split capacitor motor. The capacitors primary function is to reduce the line current while greatly improving the torque characteristics of a motor.

This is accomplished by using the 90° phase relationship between the capacitor current and voltage in conjunction with the motor windings, so that the motor will give two phase operation when connected to a single phase circuit. The capacitor also reduces the line current to the motor by improving the power factor.

The line side of this capacitor is marked with "COM" and is wired to the line side of the circuit.

In most cases hard start components are not required on Scroll compressor equipped units due to a non-replaceable check valve located in the discharge line of the compressor.

However, in installations that encounter low lock rotor voltage, a hard start kit can improve starting characteristics and reduce light dimming within the home. Only hard start kits approved by Amana® brand or Copeland should be used. "Kick Start" and/or "Super Boost" kits are not approved start assist devices.

The discharge check valve closes off high side pressure to the compressor after shut down allowing equalization through the scroll flanks. Equalization requires only about 1/2 second.