ICP 40VA Transformer for WPA3482000RKB1 — 208/230V to 24V | Ships Today

Overview

This genuine OEM 40VA control transformer (part #1173691) steps line voltage down from 208/230V to 24V for the ICP/Tempstar/Heil model WPA3482000RKB1. The 24V output powers the contactor coil, defrost board, and thermostat circuit, so a failed transformer takes the entire low-voltage control system offline — no contactor pull-in, no fan, no compressor. This listing also covers the related control components used in the same circuit on this model: the DPDT 24V relay (part #1176137, Honeywell R8222B1232) and the 24V terminal barrier (part #1176148, 42-60). A transformer that hums loudly, runs hot, or reads no 24V on the secondary should be replaced rather than reset.

Specifications

Compatibility

Direct OEM fit for the ICP/Tempstar/Heil WPA3482000RKB1 unit and other 208/230V systems that use a 40VA, 24V-secondary control transformer.

Installation Guide

1. Safety First — Disconnect power and verify zero voltage with a multimeter at both the primary and secondary leads.
2. Access — Remove the service/control panel.
3. Document — Photograph the primary and secondary wiring before disconnecting.
4. Remove — Disconnect the leads, unbolt the old transformer from the panel.
5. Install — Mount the new transformer, match the 208/230V primary taps and the 24V secondary leads to your photo.
6. Test — Restore power and confirm 24V across the secondary with a meter, then verify the contactor energizes.

Signs You Need a Replacement

• No 24V output on the secondary terminals.
• Loud humming, buzzing, or a burnt smell from the transformer.
• Repeatedly blown low-voltage fuse or tripped control circuit.
• Contactor, relay, or thermostat circuit completely dead.

Shipping & Returns

Ships same day on orders placed before 3 PM CST. 30-day returns on unused parts. Backed by the National HVAC Parts fitment guarantee.