ICP X-13 ECM Motor Control Module for WAXM424A1 — 1/2 HP | Ships Today

Overview

This OEM X-13 ECM motor control module (part number 1185288) is the electronic controller for the 1/2 HP variable-torque blower motor in the ICP WAXM424A1 air handler. The X-13 is a constant-torque ECM platform in which the control module mounts to the end of the motor and translates 24V thermostat inputs into the programmed motor speed taps. It manages soft-start, holds the commanded torque against changing static pressure, and runs the blower far more efficiently than a legacy PSC motor. When the control module fails, the blower may not start, may run only on one speed, may cycle erratically, or may stop while the rest of the system still calls for air. Failures often follow power surges, moisture intrusion, or overheating from a restricted airflow path.

Specifications

Compatibility

Direct OEM fit for the ICP WAXM424A1 air handler and compatible Tempstar and Heil units that use the 1185288 1/2 HP X-13 ECM control. Match the horsepower and motor end-bell mounting to your existing motor before installing.

Installation Guide

1. Safety First — Disconnect power at the breaker and verify zero voltage with a multimeter before touching the motor.
2. Access — Remove the blower compartment service panel and slide out the blower assembly if needed for clearance.
3. Document — Photograph the line-voltage harness, the 24V control plug, and each speed-tap connection before disconnecting.
4. Remove — Unplug the power and control connectors, release the retaining hardware, and separate the failed control module from the motor end bell.
5. Install — Seat the new X-13 control module on the motor, secure it, and reconnect the power, control, and speed-tap plugs per your photos.
6. Test — Restore power and verify the blower starts smoothly, ramps to the commanded speed, and runs steadily through a heating and cooling call.

Signs You Need a Replacement

• Blower will not start even though the thermostat is calling and 24V is present.
• Motor runs on only one speed or ignores speed-tap changes.
• Blower cycles on and off or stops mid-cycle unexpectedly.
• Buzzing, clicking, or a burnt smell from the motor control module.

Shipping & Returns

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