What are the specs for this Transformer?

The correct replacement for ICP model WAHM364A2 - 40VA 208/230V 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 WAHM364A2 - 40VA 208/230V to 24V Step-Down | Ships Today.

ICP

ICP Transformer for WAHM364A2 - 40VA 208/230V to 24V Step-Down | Ships Today

Name: ICP Transformer for WAHM364A2 - 40VA 208/230V to 24V Step-Down | Ships Today
Brand: ICP
SKU: 1172028
Price: 38.94 USD
Availability: InStock

SKU: 1172028 Brand: ICP

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Overview

This OEM control transformer (part #1172028) supplies the 24V control power for your ICP WAHM364A2 fan coil air handler. It steps 208/230V line voltage down to the 24V the thermostat, control board, and relays depend on, and its 40VA rating provides the current needed to energize the full low-voltage circuit without overheating. A failed transformer kills the entire control side at once: a blank thermostat, a dead blower, and no measurable 24V at the board. Typical causes include a shorted thermostat wire, a stuck contactor drawing excess current, a power surge, or age-related winding failure. A burnt odor or a tripped internal fuse link confirms the transformer is done.

Specifications

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

Compatibility

Direct OEM fit for the ICP WAHM364A2 fan coil air handler and shared-platform Tempstar, Heil, and Comfortmaker WAHM-series units using the 208/230V-to-24V 40VA control transformer. Verify your existing unit is rated 40VA with a 208/230V primary and 24V secondary before installing.

Installation Guide

Safety First - Disconnect power at the breaker and verify zero voltage with a multimeter at the line and 24V terminals.
Access - Remove the air handler service panel to reach the control compartment.
Document - Photograph the primary and secondary wiring before disconnecting.
Remove - Label and disconnect the primary line leads and 24V secondary leads, then unbolt the failed transformer from its bracket.
Install - Mount the new transformer and reconnect primary and secondary exactly per your photo.
Test - Restore power and confirm 24V across the secondary plus normal thermostat and blower operation.

Signs You Need a Replacement

Thermostat is blank or unresponsive with line power present
No 24V at the control board or transformer secondary
Entire low-voltage control circuit is dead
Burnt smell, discoloration, or a blown internal fuse link

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 Transformer for WAHM364A2 - ...

$38.94

Frequently Asked Questions

Does this Transformer fit my ICP WAHM364A2 - 40VA 208/230V to 24V Step-Down | Ships Today?

Yes. This is the factory-specified OEM transformer for the ICP WAHM364A2 - 40VA 208/230V 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 WAHM364A2 - 40VA 208/230V 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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