ICP Defrost Control Board for YE036F — Heat Pump Timer | Ships Today

Overview

This is the genuine OEM defrost control board (part number 34332101) for the ICP/Heil/Tempstar YE036F heat pump. The defrost board is the brain of the outdoor unit's defrost cycle — it monitors the defrost thermostat and coil temperature, manages the timed defrost interval, switches the reversing valve, and cycles the outdoor fan to clear frost from the coil during heating mode. When this board fails, the heat pump can ice over in winter, fail to defrost, short-cycle, or lose heating output entirely. Replacing the board restores proper defrost timing and protects the compressor.

Specifications

Compatibility

Direct factory replacement for the ICP/Heil/Tempstar YE036F heat pump and other ICP-family outdoor units that use defrost board 34332101. Verify the printed part number on your existing board before ordering.

Installation Guide

1. Safety First — Disconnect power at the disconnect and breaker, then verify zero voltage with a multimeter.
2. Access — Remove the electrical service panel on the condensing unit.
3. Document — Photograph every wire and connector on the board before disconnecting.
4. Remove — Unplug the low-voltage harness and high-voltage leads, release the board standoffs or screws, and lift out the old board.
5. Install — Seat the new board on its standoffs and reconnect every wire exactly per your photo, confirming the defrost thermostat leads are correct.
6. Test — Restore power and verify the unit initiates and terminates a defrost cycle normally.

Signs You Need a Replacement

• Outdoor coil ices over and won't clear in heating mode
• Heat pump fails to defrost or runs an endless defrost cycle
• Reversing valve or outdoor fan won't switch on defrost
• Intermittent or no heating output and short-cycling in cold weather

Shipping & Returns

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