ICP 24V Transformer for ZAEB025CHA1 — 40VA Control Power | Ships Today

Overview

This genuine OEM 24-volt control transformer (part #1053004) provides low-voltage power to the control circuit of the ICP ZAEB025CHA1. Rated 40VA with a 24-volt secondary, it steps line voltage down to the 24V signal that drives the contactor coil, relays, and thermostat. A failed transformer kills the entire control circuit — the unit will not respond to a call for cooling or heating, the thermostat may go dark, and the low-voltage fuse may blow repeatedly. Buzzing, overheating, or a zero-volt reading across the secondary all indicate the transformer should be replaced.

Specifications

Compatibility

Direct-fit replacement for the ICP ZAEB025CHA1 and shared-platform units across the ICP family of brands — Tempstar, Heil, and Comfortmaker — using the same 24V, 40VA control transformer.

Installation Guide

1. Safety First — Disconnect power at the breaker and confirm zero voltage with a multimeter before working.
2. Access — Remove the service panel to reach the control compartment.
3. Document — Photograph all primary and secondary wiring before disconnecting.
4. Remove — Disconnect the line-voltage primary and 24V secondary leads, then unbolt the old transformer.
5. Install — Mount the replacement transformer and reconnect leads exactly as documented.
6. Test — Restore power, verify 24V at the secondary, and confirm normal operation.

Signs You Need a Replacement

• No 24V output at the secondary terminals.
• Dead thermostat with line power confirmed.
• Buzzing or burnt odor from the transformer.
• Repeatedly blown low-voltage control fuses.

Shipping & Returns

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