Accustat PSG Controls PFC-A24 Digital Fan Coil Auto Changeover 24V

Product Overview:
Flexible temperature control is essential for fan coil units and packaged HVAC systems that operate with different piping and equipment configurations. The Accustat PSG Controls PFC-A24 2/4 Pipe Source Heat Pump Thermostat With Auto Changeover 24V Digital Fan Coil -PTAC-PTHP Water Source Heat Pump Thermostat with Auto Changeover 24Vac is an OEM part designed to regulate fan coil, PTAC, PTHP, and water-source heat pump applications. Its digital control and automatic changeover functionality support heating and cooling operation based on system requirements.

Digital HVAC System Control:
The digital thermostat manages heating and cooling demand through its configured control outputs. It supports designated fan coil and packaged terminal equipment applications, allowing connected equipment to respond to room temperature settings.

Automatic Heating and Cooling Changeover:
The automatic changeover function switches between heating and cooling modes according to the control configuration and sensed temperature conditions. Its 2-pipe and 4-pipe application capability supports different hydronic system arrangements when correctly configured.

Replacement Guidelines:
Replace the Accustat PSG Controls PFC-A24 2/4 Pipe Source Heat Pump Thermostat With Auto Changeover 24V Water Source Heat Pump Thermostat with Auto Changeover 24Vac when the display or control buttons become unresponsive, automatic changeover fails, or connected HVAC equipment does not respond correctly to temperature settings. Replacement may also be necessary if the wiring terminals, circuit board, or housing becomes damaged. Have a qualified HVAC technician verify the piping configuration, wiring, and control settings before replacement.

Common Failure Symptoms:

• Heating or cooling modes fail to change automatically.
• Fan coil or heat pump operation does not respond to thermostat settings.
• Room temperature becomes difficult to regulate.
• Digital display or adjustment controls stop responding.
• Electrical terminals or controller components show visible damage.

Equipment Compatibility:
The Accustat PSG Controls PFC-A24 2-4 pipe Digital Fan Coil -PTAC-PTHP Water Source Heat Pump Thermostat with Auto Changeover 24Vac OEM replacement thermostat is intended for designated 2-pipe and 4-pipe fan coil systems, PTAC units, PTHP equipment, and water-source heat pumps requiring 24 VAC control. Verify the existing thermostat number, equipment type, piping arrangement, wiring configuration, and control requirements before installation.

Technical Specifications:
Brand: Accustat PSG Controls
Part Number: PFC-A24
Product Type: Digital HVAC Thermostat
Piping Configuration: 2-Pipe / 4-Pipe
Changeover: Automatic
Supply Voltage: 24 VAC