ICP Transformer for RHS102L0AA0AAAA — 24V 40VA Control Circuit | Ships Today

Overview

This control transformer provides the 24V low-voltage power that drives the contactor coil, control board, and reversing-valve circuit on your ICP RHS102L0AA0AAAA heat pump. It steps 208/240V line voltage down to 24V at 40VA. A failed transformer kills the entire control circuit — the contactor won't energize, the thermostat may go dark, and neither the compressor nor the fan will start despite having line power. Common causes are voltage surges, a shorted secondary, and overheating from an overloaded control circuit.

Specifications

Compatibility

Engineered for the ICP/Tempstar/Heil RHS102L0AA0AAAA heat pump and shared across the RHS102 series. Confirm your current transformer's VA rating and voltage taps before installing.

Installation Guide

1. Safety First — Disconnect power at the disconnect and breaker, then verify zero voltage with a multimeter.
2. Access — Remove the control-panel service cover.
3. Document — Photograph all primary and secondary connections before disconnecting.
4. Remove — Disconnect the primary and secondary leads and unbolt the old transformer.
5. Install — Mount the new transformer, match primary leads to the correct voltage tap, and reconnect the secondary per your photo.
6. Test — Restore power and verify 24V across the secondary terminals.

Signs You Need a Replacement

• No 24V at the control board or thermostat
• Contactor won't pull in and the system never starts
• Scorched, swollen, or burnt-smelling transformer
• Repeatedly blown low-voltage fuses

Shipping & Returns

Ships same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.