What are the specs for this Control Board?

The correct replacement for ICP model YC048G — 24V Heat Pump Defrost Timer | 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 YC048G — 24V Heat Pump Defrost Timer | Ships Today.

ICP

ICP Defrost Control Board for YC048G — 24V Heat Pump Defrost Timer | Ships Today

Name: ICP Defrost Control Board for YC048G — 24V Heat Pump Defrost Timer | Ships Today
Brand: ICP
SKU: 34332100
Price: 193.70 USD
Availability: InStock

SKU: 34332100 Brand: ICP

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Overview

The ICP defrost control board (OEM part #34332100) manages the defrost cycle on your YC048G heat pump. Running on 24 volts, it tracks outdoor coil temperature and compressor run time, then initiates defrost by reversing refrigerant flow and stopping the outdoor fan to melt frost from the coil. A failed board commonly leaves the coil iced over, kills heating output, forces constant auxiliary heat, or leaves the outdoor fan running through defrost. This is a genuine OEM replacement, so the defrost timing logic, terminal layout, and relay ratings match the original board exactly.

Specifications

Spec	Value
OEM Part Number	34332100
Type	Defrost Control Board
Brand	ICP / Tempstar / Heil
Control Voltage	24V
Application	Heat Pump Defrost Control
Fit	OEM Direct Replacement

Compatibility

Direct-fit replacement for the ICP / Tempstar / Heil YC048G heat pump and other units that originally shipped with OEM board 34332100. Verify the part number on your existing board before ordering, since ICP used several board revisions across model years.

Installation Guide

Safety First — Disconnect power at the outdoor disconnect and breaker, then verify zero voltage at the board with a multimeter.
Access — Remove the condenser control-panel access cover.
Document — Photograph every wire and terminal position before disconnecting anything.
Remove — Label and unplug the low-voltage and line-voltage connections, then unscrew the old board from its standoffs.
Install — Mount the new board on the standoffs and reconnect each wire per your photo. Match the defrost timing pins/jumpers to the original setting.
Test — Restore power, run a heat cycle, and confirm a defrost energizes the reversing valve and stops the outdoor fan.

Signs You Need a Replacement

Outdoor coil ices over and never clears in heating mode
Heat pump stops heating or runs strip/auxiliary heat constantly
Outdoor fan keeps running during a defrost cycle
No 24V output to the reversing valve or chattering defrost relay

Shipping & Returns

Ships same day on orders placed before 3 PM CST. 30-day returns on unused parts. Backed by the National HVAC Parts fitment guarantee — if it doesn't fit your YC048G, we'll make it right.

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 YC...

$193.70

Frequently Asked Questions

Does this Control Board fit my ICP YC048G — 24V Heat Pump Defrost Timer | Ships Today?

Yes. This is the factory-specified OEM control board for the ICP YC048G — 24V Heat Pump Defrost Timer | 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 YC048G — 24V Heat Pump Defrost Timer | 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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