OEM Payne 40VA Control Transformer HT01BD236 for Model PA1SEA102000AAAA

This is the factory-specified OEM replacement transformer (part number HT01BD236) for the Payne PA1SEA102000AAAA air conditioning system. The transformer steps down 120V line voltage to the 24V signal required by your thermostat, contactor coil, and control board. When the transformer fails — due to a wiring short, voltage spike, or simply age — the entire control circuit goes dead: your thermostat goes blank, the system refuses to respond to any call for cooling or heating, and no components energize. Replacing this transformer is often the first diagnostic step when absolutely nothing responds to thermostat input.

• Specs: 40VA rated | 120V primary / 24V secondary | OEM part number HT01BD236 | Factory-matched output voltage for reliable control circuit operation
• OEM vs Generic: This OEM transformer is wound and tested to Payne's exact VA rating and voltage tolerances. Generic transformers frequently run underpowered or over-voltage, stressing the control board and contactor coil and shortening their service life considerably.
• Install difficulty: 2/5 — Shut off all power at the disconnect and breaker before starting. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter to confirm 24V output after install. Label all wires before disconnecting. The swap typically takes under 20 minutes for a qualified technician.
• Warranty: 1-year OEM factory warranty against defects in materials and workmanship. Orders placed before cutoff ship same business day from our stocked warehouse.

Compatibility: Designed as a direct OEM replacement for the Payne PA1SEA102000AAAA. Always verify your existing transformer's VA rating and primary/secondary voltages on the unit's data plate or wiring diagram before ordering to ensure a proper match. Have questions about fitment? Our HVAC parts specialists confirm compatibility before you buy — call or chat today. In stock and ships today.