ICP Control Transformer for ZAEB015CHA1 — 24V 40VA OEM | Ships Today

Overview

This OEM 24-volt control transformer (part number 1053004) provides low-voltage power to the entire control circuit of your ICP ZAEB015CHA1 package unit. It steps incoming line voltage down to a steady 24V that drives the thermostat, contactor coil, relays, and safety switches. Rated at 40VA, it carries enough load to operate several control devices at once without overheating. A failed transformer kills the low-voltage system completely — the thermostat goes dark, the contactor won't energize, and the unit produces no heating or cooling even with line power present. Buzzing, a blown control fuse, or a scorched/discolored case all indicate the original transformer has shorted internally.

Specifications

Compatibility

Direct factory replacement for the ICP/Tempstar/Heil ZAEB015CHA1 package system. Verify the secondary voltage and VA rating against your unit's wiring diagram before installation.

Installation Guide

1. Safety First — Disconnect power at the breaker and unit disconnect, then verify zero voltage with a multimeter.
2. Access — Remove the control-panel service cover.
3. Document — Photograph all primary and secondary wire connections before disconnecting.
4. Remove — Label and disconnect the leads, then unbolt the failed transformer from its bracket.
5. Install — Mount the new transformer, matching primary taps to your supply voltage, and reconnect each lead per your photo.
6. Test — Restore power and confirm a steady 24V reading across the secondary terminals.

Signs You Need a Replacement

• Blank thermostat or no response to a heating/cooling call
• Contactor and relays fail to energize despite line power
• Repeatedly blown low-voltage control fuse
• Burnt smell, buzzing, or discolored transformer housing

Shipping & Returns

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