What are the specs for this Control Board?

The correct replacement for ICP model YK048G2 — Heat Pump | Ships Today is this exact part. It is the factory-specified replacement with exact OEM specifications. Using a part with different specifications can cause equipment damage or void your warranty. You can verify this by checking the data plate on your ICP equipment which lists the model number YK048G2 — Heat Pump | Ships Today.

ICP

ICP Defrost Control Board for YK048G2 — Heat Pump | Ships Today

Name: ICP Defrost Control Board for YK048G2 — Heat Pump | Ships Today
Brand: ICP
SKU: 34332101
Price: 194.94 USD
Availability: InStock

SKU: 34332101 Brand: ICP

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Overview

This OEM defrost control board (Part #34332101) is the brain of the defrost cycle on your ICP YK048G2 heat pump. It monitors the coil temperature sensor and accumulated run time, then reverses the system to melt frost off the outdoor coil before returning to heating. A failed board causes a coil that ices over, a unit stuck in defrost, no heat-pump heating, or the reversing valve and fan failing to switch on schedule. Replacing it restores proper defrost timing and protects efficiency through cold weather.

Specifications

Spec	Value
Part Number	34332101
Type	Defrost Control Board
Brand	ICP
Control Voltage	24V
Application	Heat Pump Defrost

Compatibility

Direct OEM fit for the ICP / Tempstar / Heil YK048G2 heat pump and other models using the 34332101 defrost board. Confirm the sensor connector and terminal layout match your existing board before installing.

Installation Guide

Safety First — Disconnect power and verify zero voltage with a multimeter.
Access — Remove the control-box service panel.
Document — Photograph every connector and wire before unplugging.
Remove — Unplug the harnesses and defrost sensor, then unscrew the old board from its standoffs.
Install — Mount the new board, reconnect each harness and the sensor per your photo, and set any defrost timing jumper to match the original.
Test — Restore power and confirm normal heat-pump operation and a clean defrost cycle.

Signs You Need a Replacement

Outdoor coil ices up and won't clear
Unit stuck in defrost or never defrosts
No heat-pump heating despite a call
Reversing valve or fan won't switch on schedule

Shipping & Returns

Ships same day 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

ICP Defrost Control Board for YK...

$194.94

Frequently Asked Questions

Does this Control Board fit my ICP YK048G2 — Heat Pump | Ships Today?

Yes. This is the factory-specified OEM control board for the ICP YK048G2 — Heat Pump | Ships Today. It is a direct drop-in replacement that fits without modification. Always verify the model number on your equipment nameplate before ordering.

How do I replace the control board on my ICP YK048G2 — Heat Pump | Ships Today?

Difficulty: Advanced (1–2 hrs)
Step 1: Turn off breaker. Step 2: PHOTOGRAPH all wire connections before touching anything. Step 3: Label each wire with tape. Step 4: Disconnect all wires, remove old board. Step 5: Mount new board, reconnect all wires matching your photo exactly. Step 6: Restore power and test all modes. Exact part number match is critical.

My HVAC system is completely dead. What could be wrong?

Completely dead HVAC (no LED on board) = failed control board or blown fuse. Check board fuse first (3A or 5A, costs $1–$5). If fuse is good and board has power but no LED, board is dead. Always photograph wiring before replacing.

Is this control board compatible with Bryant or Payne too?

Many ICP parts are cross-compatible with Bryant and Payne since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across brand labels with different model numbers. To verify: check your Bryant or Payne equipment service manual for cross-compatible part numbers, or email info@nationalhvacparts.com with your model number.

Should I use OEM or aftermarket for my ICP control board?

OEM essential. Control boards are model-specific with precise firmware and connector layouts. Aftermarket boards rarely match all functions and can cause intermittent failures or safety issues. Always match the exact OEM part number.

How fast does National HVAC Parts ship?

Orders placed before 3:00 PM CST ship the same business day. Standard delivery is 2–5 business days anywhere in the continental United States. Express shipping available at checkout. We ship from Houston, TX to all 50 states. 30-day return policy on all parts.

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