What are the specs for this Transformer?

The correct replacement for ICP model RGS240HDEA0AAAA — 40VA Control Circuit | 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 RGS240HDEA0AAAA — 40VA Control Circuit | Ships Today.

ICP

ICP 24V Transformer for RGS240HDEA0AAAA — 40VA Control Circuit | Ships Today

Name: ICP 24V Transformer for RGS240HDEA0AAAA — 40VA Control Circuit | Ships Today
Brand: ICP
SKU: 1183814-GEN
Price: 28.00 USD
Availability: InStock

SKU: 1183814-GEN Brand: ICP

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Overview

This OEM 24-volt control transformer assembly supplies low-voltage power to the control circuit of your ICP / Tempstar / Heil RGS240HDEA0AAAA gas furnace. It steps line voltage down to a stable 24V secondary and includes the matched DPDT and DPST control relays (OEM 1183814 / 1178205) that switch the blower, ignition, and gas-valve circuits on demand. When the control transformer or its companion relays fail, the furnace loses 24V power entirely — the thermostat goes dead, the blower will not energize, and no call for heat is answered. Replacing it with the factory-spec part restores correct 40VA capacity and clean switching without nuisance lockouts.

Specifications

Spec	Value
OEM Part Numbers	1183814 (Relay 24V DPDT T92S11A22-24), 1178205 (Relay 24V DPST T92P7A22-24)
Type	24V Control Transformer / Relay Set
Brand	ICP (Tempstar / Heil / Comfortmaker)
Secondary Voltage	24 VAC
Rating	40 VA
Fitment	OEM Direct Replacement

Compatibility

Engineered as a direct OEM fit for the ICP / Tempstar / Heil RGS240HDEA0AAAA furnace platform and shared RGS240-series control assemblies. Always confirm your existing part number against the unit's wiring diagram and rating plate before ordering.

Installation Guide

Safety First — Disconnect power at the furnace switch and breaker; verify zero voltage with a multimeter before touching wiring.
Access — Remove the furnace control/service panel.
Document — Photograph every wire and terminal position on the transformer and relays before disconnecting.
Remove — Label and disconnect the primary and 24V secondary leads, then unbolt the transformer and unclip the relays from the control rail.
Install — Mount the new transformer and relays, reconnect each lead exactly per your photo.
Test — Restore power, confirm 24VAC at the secondary, and run a full heat cycle.

Signs You Need a Replacement

Dead thermostat with no 24V control power present
Blower or gas valve will not energize on a call for heat
Tripped or blown low-voltage fuse / overheated transformer body
Buzzing, chattering, or intermittent relay switching

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 24V Transformer for RGS240HD...

$28.00

Frequently Asked Questions

Does this Transformer fit my ICP RGS240HDEA0AAAA — 40VA Control Circuit | Ships Today?

Yes. This is the factory-specified OEM transformer for the ICP RGS240HDEA0AAAA — 40VA Control Circuit | 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 RGS240HDEA0AAAA — 40VA Control Circuit | 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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