Heat pump

What does the 'O' terminal in a thermostat wiring diagram represent?

• Outdoor sensor

• Overload protection

• Reversing valve in cooling mode

• Operational mode selector

What does the color yellow in thermostat wiring indicate?

• Common for 24 volt power

• 24 volt power

• Compressor

• Fan

What is the purpose of the 'E' terminal in thermostat wiring?

• Energy saving mode

• Evaporator fan

• External unit control

• Emergency heat

What does 18:8 thermostat wire signify?

• 18 volts and 8 amps capacity

• 18 gauge wire with 8 wires inside

• 18 meters long and 8 mm thick

• 18 wires inside and 8 gauge wire

What is the significance of having additional wires in thermostat wiring?

• To replace faulty wires

• To increase voltage capacity

• For aesthetic purposes

• For future upgrades

What does the 'B' terminal in a thermostat wiring diagram represent?

• Blower control

• Base temperature setting

• Reversing valve in heating mode

• Battery power

What does the color green in thermostat wiring indicate?

• Emergency heat

• Fan

• Compressor

• Reversing valve

What does the 'C' terminal in thermostat wiring represent?

• Cooling mode

• Circulation fan

• Compressor control

• Common for 24 volt power

What is the purpose of the 'AUX' terminal in thermostat wiring?

• Airflow uniformity exchange

• Auxiliary heat

• Auxiliary power supply

• Automatic unit exchange

What does the color red in thermostat wiring indicate?

• Fan

• Emergency heat

• Compressor

• 24 volt power