ICP Defrost Control Board for YE048G — Heat Pump OEM | Ships Today
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Overview
This is a genuine OEM defrost control board (part number 34332101) for the ICP / Tempstar / Heil YE048G heat pump. The defrost board is the brain of the outdoor unit in heating mode: it monitors the defrost thermostat and ambient conditions, times the heat-pump defrost cycle, switches the reversing valve, and cycles the outdoor fan and auxiliary heat so the outdoor coil can shed frost. When this board fails, the heat pump may ice over solid, fail to defrost, run the auxiliary strip heat constantly, or short-cycle. Typical symptoms include a thick layer of ice on the outdoor coil that never clears, no heating output, the reversing valve not switching, the outdoor fan running during defrost, or no power to the contactor coil at all.
Specifications
| Spec | Value |
|---|---|
| Part Number | 34332101 |
| Type | Defrost Control Board |
| Brand | ICP / Tempstar / Heil |
| Control Voltage | 24V |
| Function | Heat Pump Defrost Cycle Management |
| Fit | OEM Replacement |
Compatibility
Designed as the factory replacement defrost board for the ICP YE048G heat pump and used across compatible ICP-family outdoor units sold under the Heil, Tempstar, and Comfortmaker labels. Match the part number and connector layout to your existing board before installing.
Installation Guide
- Safety First — Disconnect power at the disconnect and breaker, then verify zero voltage with a multimeter.
- Access — Remove the control panel cover on the condensing unit.
- Document — Photograph every connector, jumper, and the defrost timing pin setting before unplugging anything.
- Remove — Unplug the wiring harnesses and remove the mounting screws or standoffs holding the old board.
- Install — Mount the new board, set the defrost timing jumper to match the original, and reconnect each harness per your photo.
- Test — Restore power, place a call for heat, and confirm normal heating and a proper defrost cycle.
Signs You Need a Replacement
- Outdoor coil ices over and never clears
- Heat pump produces no heat or only auxiliary strip heat
- Reversing valve does not switch during defrost
- System short-cycles or the contactor never energizes
Shipping & Returns
Ships same day on orders placed before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.
Shipping Information
- Orders placed before 3PM CST ship same business day
- Standard delivery: 2-5 business days
- Express shipping available at checkout
- Free shipping on orders over $75
- Tracking number emailed upon shipment
Return Policy
- 30-day returns on unused parts in original packaging
- Electrical parts (capacitors, contactors, control boards) are final sale once installed
- Email info@nationalhvacparts.com to initiate a return
- Refunds processed within 5-7 business days