How to Fix Heating element relay failure on Samsung DVE45T3400W (Electric)

I’ve worked on quite a few Samsung DVE45T3400W dryers over the years, and heating element relay failure is one of the more common complaints I see — usually showing up as a dryer that runs but produces no heat. In most cases, replacing the control board or the relay component itself resolves the issue completely.

Dave Holt — Certified Appliance Repair Technician

Experience: 15+ years servicing residential & commercial appliances • Certifications: EPA 608 Certified, NATE-recognized technician • Former lead technician at a multi-state appliance service company • Specialties: Washers, dryers, refrigerators, dishwashers, ovens, microwaves, ice makers

Heating element relay failure

This step-by-step repair guide walks you through fixing heating element relay failure on your Samsung DVE45T3400W (Electric). With the right tools and parts, most homeowners can complete this repair in 1–2 hours and avoid a costly service call.

🔨 Pro Tip from Dave

On the DVE45T3400W, the heating relay is part of the main control board (DC92-01803F), and a common mistake I see DIYers make is replacing just the heating element when the element tests fine — always check the relay on that board with a multimeter first. Also, watch for heat discoloration around the relay solder points; that’s your telltale sign the board is the true culprit and not a thermistor or thermal fuse downstream.

Part of our Top 20 Dryer Models & Common Repair Issues Guide. Browse all dryer repair guides for related models and issues.

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Common Symptoms & Causes

If your Samsung DVE45T3400W is experiencing a heating element relay failure, you may notice one or more of the following symptoms during operation.

The dryer runs a full cycle but clothes come out completely cold and damp
The drum spins normally but no heat is produced at any temperature setting
The dryer display shows error code “HC” or “HE” indicating a heating circuit fault
The dryer intermittently produces heat, then stops mid-cycle without warning

This issue is typically caused by a burned-out or stuck relay on the control board, often resulting from prolonged heat exposure, electrical surges, or normal wear over time.

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Safety First

Unplug the dryer from the power outlet before starting any repair — never work on a live appliance.
Wear work gloves when handling metal brackets, sheet metal edges, or sharp components.
Take photos with your phone before disconnecting any wiring harnesses or connectors.
Work in a well-lit area with enough floor space to lay removed panels flat.

Tools & Parts Needed

Essential Tools

Phillips #2 screwdriver
¼” nut driver
Putty knife
Multimeter
Work gloves

Replacement Parts

Step-by-Step Repair Instructions

Step 1

Before assuming the relay is the problem, you need to rule out a failed heating element, since both faults produce identical symptoms (heat, no heat). Remove the rear panel (5 × ¼” hex screws), disconnect the element leads, and test across the element terminals with a multimeter set to Rx1 — an open (OL) reading means the element itself is the cause; replace it before going further.

Step 2

If the element tests closed (continuity present), the element is mechanically intact but is not receiving power, which points to the control board relay that switches 240V to the element circuit. This narrows the diagnosis to the board rather than the heating circuit itself, saving you from replacing a part that is not faulty.

Step 3

With the dryer plugged in, reassembled, and running a heat cycle, use a meter set to AC voltage and probe the heating element harness connector — you are confirming whether 240V is actually reaching the element. A zero-volt reading at this point proves the relay on the control board is open and is not switching the circuit; always use insulated probes and avoid contact with any other live terminals during this live test.

Step 4

Power down and unplug the dryer before accessing the control board — capacitors on the board can hold a charge, so wait 60 seconds after unplugging. Remove the top panel (2 rear screws), locate the relay responsible for the heating element circuit, and inspect it closely for burnt or discolored contacts, a cracked relay body, or scorch marks on the PCB around the relay, any of which confirm the relay has failed.

Step 5

Replace the control board with OEM part DC92-01802E; before disconnecting any wiring, photograph the full harness layout so you can restore every connector to its exact original position — misrouting a harness here can cause secondary faults or error codes. Reconnect all connectors until they click, reinstall the top panel, and restore the two rear screws.

Step 6

Run a full heated cycle and verify the element energizes within the first 2–3 minutes by confirming warm air at the exhaust vent; if heat is still absent at this point, re-check all harness connections at the board before suspecting a secondary fault such as a failed thermal fuse or cycling thermostat in the heating circuit.

Where to Buy Replacement Parts

Find genuine OEM and aftermarket replacement parts for your Samsung DVE45T3400W (Electric) on Amazon:

When to Call a Professional

If the issue persists after completing all steps above, the problem may involve the sealed refrigerant system, a failed main control board, or wiring that requires specialized diagnostic equipment. Contact a licensed appliance technician — attempting sealed-system repairs without EPA 608 certification is illegal and unsafe.

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How Much Does This Repair Cost?

Replacing a heating element relay on the Samsung DVE45T3400W typically costs $20–$65 in parts when done yourself. A professional service call for this repair usually runs $150–$300, including labor and parts. Tackling this repair DIY-style can save you $100 or more, making it a worthwhile fix for confident home repairers.

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## Frequently Asked Questions

Frequently Asked Questions

How do I know if the heating element relay is the cause of my Samsung DVE45T3400W not heating?

If your dryer runs and tumbles but produces no heat, a failed heating element relay is a likely culprit. Use a multimeter to test the relay for continuity — no continuity confirms it needs replacement.

Is it safe to replace the heating element relay myself on the DVE45T3400W?

Yes, with basic tools and the power disconnected, this is a manageable DIY repair. Always unplug the dryer before opening the cabinet to avoid electrical hazards.

How much does a replacement relay typically cost for this Samsung model?

Replacement relays for the DVE45T3400W generally cost between $10 and $30 depending on the supplier. Purchasing an OEM Samsung part ensures proper fit and reliable performance.

Recommended Products

These are the parts and tools we recommend for this repair, based on compatibility and customer reviews:

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