1. Disconnect the power supply. 2. Disconnect the fan motor wires from the unit. 3. Set the ohmmeter to the RX1 scale and zero it.…

Condenser fan motors are used to circulate air through the condenser to cool it. They are located next to the condenser (in fan-forced condenser types)…

If the unit does not run, or if it short-cycles, it can be due to a dead or weak overload protector. An overload protector is…

1. Disconnect the power and wires connected to the timer terminals. 2. Check the diagram inside the timer door for normally open (NO) and normally…

As you can see in figure 54b, only one of the power lines is connected directly to the loads (compressor, fans, and defrost heater). The…

In residential units, timers are usually located behind the toe plate (front grille at the bottom of the unit) near the front or back of…

Potential relays are wired to all three compressor terminals and not just to the compressor run and start terminals. When a compressor motor fails to…

These relays are directly or indirectly attached to the compressor run and start terminals. The relay terminal attached to the compressor run terminal is marked…

Starting relays in commercial units (unlike residential types) are not always fastened directly to the compressor terminals. They are usually installed in a box next…

1. Disconnect the power supply, remove the unit, and remove the plastic cover. compartment cover of the unit, and remove the plastic cover. 2. Remove…