What are the specs for this Transformer?

The correct replacement for ICP model WPG4424060LKB1 — 208/230V to 24V | 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 WPG4424060LKB1 — 208/230V to 24V | Ships Today.

ICP

ICP 40VA Transformer for WPG4424060LKB1 — 208/230V to 24V | Ships Today

Name: ICP 40VA Transformer for WPG4424060LKB1 — 208/230V to 24V | Ships Today
Brand: ICP
SKU: 1178431-GEN
Price: 36.00 USD
Availability: InStock

SKU: 1178431-GEN Brand: ICP

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Overview

This OEM 40VA control transformer (OEM part 1173691, TRANS 208/230>24 40VA) steps the 208/230V line voltage down to the 24V control voltage that powers the thermostat, control board, relays, and gas valve on the ICP / Tempstar / Heil WPG4424060LKB1 packaged unit. It ships with the matching 24V barrier component (OEM part 1178431). When a transformer fails — usually from a control-circuit short or age — the entire low-voltage system goes dead: no thermostat display, no calls answered, and no heating or cooling, even though high-voltage components still have power.

Specifications

Spec	Value
Part Number	1173691 (transformer) / 1178431 (24V barrier)
Type	Control Transformer
Brand	ICP / Tempstar / Heil
Rating	40 VA
Voltage	208/230V primary → 24V secondary
Fits Model	WPG4424060LKB1
Fitment	OEM Direct Replacement

Compatibility

Built for the ICP-family WPG4424060LKB1 gas/electric packaged unit and its shared Tempstar, Heil, and Comfortmaker variants. Confirm primary voltage taps and VA rating match your original transformer before wiring.

Installation Guide

Safety First — Disconnect power at the unit disconnect and verify zero voltage with a multimeter.
Access — Remove the electrical/control service panel.
Document — Photograph the primary and secondary leads and the barrier mounting before disconnecting.
Remove — Disconnect the wiring, unbolt the old transformer and barrier from the panel.
Install — Mount the new transformer and 24V barrier, then land the correct primary tap (208 vs 230) and the 24V secondary per your photo.
Test — Restore power and confirm ~24V across the secondary and a live thermostat/control circuit.

Signs You Need a Replacement

Blank thermostat and no 24V at the control board
System completely unresponsive to heat or cool calls
Transformer is burnt, swollen, or smells scorched
Measured 0V on the secondary with line voltage present

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 40VA Transformer for WPG4424...

$36.00

Frequently Asked Questions

Does this Transformer fit my ICP WPG4424060LKB1 — 208/230V to 24V | Ships Today?

Yes. This is the factory-specified OEM transformer for the ICP WPG4424060LKB1 — 208/230V to 24V | 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 WPG4424060LKB1 — 208/230V to 24V | 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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