ICP Defrost Control Board for YG024GC2 — 24V Heat Pump | Ships Today
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Overview
This OEM defrost control board (part number 34332101) is the brain of the defrost cycle on your ICP / Tempstar / Heil YG024GC2 heat pump. It monitors the outdoor coil temperature and the defrost timer, then commands the reversing valve, outdoor fan, and auxiliary heat to clear frost and ice from the coil during cold-weather heating. When the board fails, the heat pump may ice over and lose heating capacity, run defrost endlessly, skip defrost entirely, or fail to energize the contactor at all. Because it controls 24V switching to multiple components, a faulty board produces erratic, hard-to-diagnose behavior. Installing the correct OEM board restores proper defrost timing and dependable heat-pump operation.
Specifications
| Spec | Value |
|---|---|
| Part Number | 34332101 |
| Type | Defrost Control Board |
| Brand | ICP / Tempstar / Heil |
| Control Voltage | 24V |
| Application | Heat Pump Defrost Circuit |
| Fitment | OEM Direct Replacement |
Compatibility
Direct-fit OEM replacement for the ICP Tempstar Heil YG024GC2 heat pump and related YG024 series units. Match the printed board part number and connector layout to your existing board before ordering.
Installation Guide
- Safety First — Disconnect power at the unit and breaker, then verify zero voltage with a multimeter.
- Access — Remove the outdoor unit's electrical/control access panel.
- Document — Photograph every wire harness and connector position before disconnecting.
- Remove — Unplug the connectors, note the defrost timer/jumper settings, and unscrew the old board from its standoffs.
- Install — Mount the new board, set the defrost timer pins to match the original, and reconnect each harness per your photo.
- Test — Restore power, confirm normal heating operation, and verify a proper defrost cycle.
Signs You Need a Replacement
- Outdoor coil ices up and the unit loses heating capacity.
- Unit runs in defrost continuously or never enters defrost.
- Reversing valve or auxiliary heat won't engage on a defrost call.
- Contactor won't energize even with a valid thermostat call.
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