What are the specs for this Transformer?

The correct replacement for ICP model YH042GC — 40VA 24V Control | 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 YH042GC — 40VA 24V Control | Ships Today.

ICP

ICP Transformer for YH042GC — 40VA 24V Control | Ships Today

Name: ICP Transformer for YH042GC — 40VA 24V Control | Ships Today
Brand: ICP
SKU: 34329055
Price: 45.44 USD
Availability: InStock

SKU: 34329055 Brand: ICP

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Overview

This OEM control transformer is the low-voltage power source for the ICP Tempstar/Heil YH042GC heat pump system. It steps line voltage down to a 24V secondary at 40VA to drive the contactor coil, reversing valve solenoid, relays, and thermostat circuit. When a transformer fails, the entire 24V control side goes dead — the system will not respond to the thermostat, the contactor will not pull in, and there will be no cooling or heating call. Common failure causes include a shorted secondary winding, a tripped internal thermal fuse from an overloaded control circuit, or age-related insulation breakdown. Genuine OEM part numbers covered by this listing include 34329055, 96467, and 1053004 for the YH042GC control assembly.

Specifications

Spec	Value
Part Numbers	34329055, 96467, 1053004
Type	Control Transformer
Brand	ICP (Tempstar / Heil)
Rating	40 VA
Secondary Voltage	24V
Fitment	OEM

Compatibility

Designed for the ICP Tempstar/Heil YH042GC and shares the same control platform used across matching Comfortmaker and Heil branded units of the same series. Always verify the existing transformer rating and terminal layout before installing.

Installation Guide

Safety First — Disconnect power at the breaker and verify zero voltage with a multimeter at the control board.
Access — Remove the service panel to reach the control compartment.
Document — Photograph all primary and secondary wire connections before disconnecting.
Remove — Disconnect the line-voltage primary leads and 24V secondary leads, then unbolt the transformer from its mounting bracket.
Install — Mount the new transformer, reconnect primary and secondary leads exactly per your photo.
Test — Restore power and confirm 24V across the secondary terminals and a normal thermostat call.

Signs You Need a Replacement

No 24V control voltage; thermostat display is blank or system unresponsive
Contactor and reversing valve will not energize on a call
Burnt smell or visibly scorched transformer housing
Repeated control fuse failures after a shorted low-voltage wire

Shipping & Returns

Ships same day before 3 PM CST. 30-day returns. 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 Transformer for YH042GC — 40...

$45.44

Frequently Asked Questions

Does this Transformer fit my ICP YH042GC — 40VA 24V Control | Ships Today?

Yes. This is the factory-specified OEM transformer for the ICP YH042GC — 40VA 24V Control | 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 transformer on my ICP YH042GC — 40VA 24V Control | Ships Today?

Difficulty: Medium (30–45 min)
Step 1: Turn off breaker. Step 2: Photo wiring connections. Step 3: Disconnect wires from old transformer. Step 4: Remove mounting hardware. Step 5: Install new transformer, reconnect wires matching voltage ratings. Step 6: Verify 24V output with multimeter.

My thermostat has no power. What failed?

Thermostat with no display = failed 24V transformer (or blown control board fuse). Check the 3A/5A fuse on the control board first ($1–$5 fix). If fuse is good but no 24V output from transformer, replace transformer.

Is this transformer 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 transformer?

OEM recommended for reliability and warranty compatibility. OEM parts match exact factory specifications for proper fit, performance, and safety. While aftermarket alternatives cost less upfront, the risk of improper fit and reduced lifespan usually makes OEM the better value long-term.

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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