What are the specs for this Transformer?

The correct replacement for ICP model WAXM604A2 — 208/230V to 24V OEM | 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 WAXM604A2 — 208/230V to 24V OEM | Ships Today.

ICP

ICP 40VA Transformer for WAXM604A2 — 208/230V to 24V OEM | Ships Today

Name: ICP 40VA Transformer for WAXM604A2 — 208/230V to 24V OEM | Ships Today
Brand: ICP
SKU: 1172028
Price: 36.34 USD
Availability: InStock

SKU: 1172028 Brand: ICP

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Overview

This is a genuine OEM 40VA control transformer, part number 1172028, for the ICP/Tempstar/Heil WAXM604A2. It steps the 208/230V line voltage down to the 24V control circuit that powers the thermostat, relays, contactor coil, and control board. A failed transformer is one of the most common causes of a completely dead control system — no 24V means no call for heat or cool, a blank thermostat, and unresponsive relays. Transformers fail from shorted control wiring, a seized contactor coil, or age-related winding breakdown, often blowing the secondary fuse along with them. Replacing it restores 24V control power and brings the system back online.

Specifications

Spec	Value
Part Number	1172028
Type	Control / Step-Down Transformer
Brand	ICP
Rating	40 VA
Primary Voltage	208/230V
Secondary Voltage	24V
Fitment	OEM Direct Replacement

Compatibility

Direct OEM replacement for the ICP, Tempstar, Heil, Comfortmaker and related brand WAXM604A2. Verify the part number 1172028 and the 208/230V-to-24V, 40VA rating on your existing transformer before installing.

Installation Guide

Safety First — Disconnect power at the breaker and verify zero voltage with a multimeter before working.
Access — Remove the control/electrical compartment service panel.
Document — Photograph all primary and secondary wire connections before disconnecting.
Remove — Disconnect the line-voltage primary leads and the 24V secondary leads, then unbolt the old transformer from its bracket.
Install — Mount the new 1172028, land the 208/230V primary and 24V secondary leads exactly per your photos, and confirm tight terminals.
Test — Restore power, verify 24V on the secondary, and confirm the thermostat and relays respond.

Signs You Need a Replacement

Blank thermostat or no response to heat/cool calls
No 24V measured on the secondary terminals
Repeatedly blown low-voltage fuse
Buzzing, overheating, or a burnt smell from the transformer

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 WAXM604...

$36.34

Frequently Asked Questions

Does this Transformer fit my ICP WAXM604A2 — 208/230V to 24V OEM | Ships Today?

Yes. This is the factory-specified OEM transformer for the ICP WAXM604A2 — 208/230V to 24V OEM | 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 WAXM604A2 — 208/230V to 24V OEM | 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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