What are the specs for this Transformer?

The correct replacement for ICP model WPG4304060RKA1 — 208/230 to 24V Step-Down | 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 WPG4304060RKA1 — 208/230 to 24V Step-Down | Ships Today.

ICP

ICP 40VA Transformer for WPG4304060RKA1 — 208/230 to 24V Step-Down | Ships Today

Name: ICP 40VA Transformer for WPG4304060RKA1 — 208/230 to 24V Step-Down | Ships Today
Brand: ICP
SKU: 1178431-GEN
Price: 34.95 USD
Availability: InStock

SKU: 1178431-GEN Brand: ICP

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Overview

This genuine OEM 40VA control transformer (part #1173691) steps the 208/230V line voltage down to the 24V control voltage that powers the thermostat, contactor coil, gas valve, and control board on your ICP/Tempstar/Heil WPG4304060RKA1 packaged unit. The included 24V barrier (part #1178431) protects the low-voltage wiring connections. When a transformer fails — usually from a shorted thermostat wire or a stuck contactor pulling too much current — the entire control circuit goes dead, leaving the thermostat blank and the system unresponsive even though high-voltage power is present.

Specifications

Spec	Value
Part Numbers	1173691 (Transformer), 1178431 (24V Barrier)
Type	Step-Down Control Transformer
Brand	ICP / Tempstar / Heil / Comfortmaker
Rating	40 VA
Primary Voltage	208/230V
Secondary Voltage	24V
Fitment	OEM

Compatibility

Direct-fit OEM replacement for the control transformer in the ICP/Tempstar/Heil WPG4304060RKA1 packaged gas/electric unit and related ICP-family models originally equipped with part 1173691. Verify the primary and secondary voltage taps and VA rating against your existing transformer before ordering.

Installation Guide

Safety First — Disconnect power at the disconnect and breaker, then verify zero voltage with a multimeter.
Access — Remove the control/electrical service panel on the unit.
Document — Photograph the primary (line) and secondary (24V) wiring before disconnecting.
Remove — Disconnect the primary and secondary leads and unbolt the old transformer from its bracket.
Install — Mount the new transformer, connect the correct primary tap for your supply voltage, install the barrier, and wire the 24V secondary.
Test — Restore power and confirm 24V at the secondary and that the thermostat and controls energize.

Signs You Need a Replacement

Blank thermostat with no 24V control power
System completely unresponsive despite line voltage present
Burnt smell or visibly charred transformer housing
Repeated blown low-voltage fuse after reset

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 WPG4304...

$34.95

Frequently Asked Questions

Does this Transformer fit my ICP WPG4304060RKA1 — 208/230 to 24V Step-Down | Ships Today?

Yes. This is the factory-specified OEM transformer for the ICP WPG4304060RKA1 — 208/230 to 24V Step-Down | 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 WPG4304060RKA1 — 208/230 to 24V Step-Down | 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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