Daikin Condensing Unit DX13SA0603AD

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.

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.

Wiring removed from the control terminals?

Ohmmeter reading across the normally closed contacts

Sign off on the heater limit control check

WARNING: Disconnect ALL power before servicing.

Heating element disassembled and removed

Visual inspection of heater assembly completed

No breaks in the wire or broken insulators found

Ohmmeter reading of the element

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.

Remove the motor leads from its respective connection points and capacitor (if applicable).

Check the continuity between each of the motor leads.

Touch one probe of the ohmmeter to the motor frame (ground) and the other probe in turn to each lead.

Probe touched to motor frame and each lead?

Do the windings test continuous?

WARNING: Disconnect ALL power before servicing.

Heater element assembly removed to expose fuse link

Continuity test across the fuse link performed

Fuse link replaced if necessary

NOTE: The link is designed to open at approximately 333°F. DO NOT WIRE AROUND - determine reason for failure.

Sign off on the heater fuse link check