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Oil Burner Reset Button Not Working? Causes & Fixes

While a malfunctioning reset button can signal various issues, from simple fixes to more complex problems, there are steps you can take to troubleshoot the situation and get your heat back on.

In this guide, I will walk you through the common causes, providing simple checks you can perform yourself and explaining when it's crucial to call in a professional.

Quick Reset Button Troubleshooting Checklist:

  • Tripped Breaker/Blown Fuse: Check your electrical panel and reset the breaker or replace the fuse.
  • Emergency Switch: Ensure the emergency switch near the burner is flipped to the "on" position.
  • Thermostat Settings: Verify the thermostat is set to "heat" and the temperature is higher than the current room temperature. Replace thermostat batteries if needed.
  • Oil Level: Check your oil tank gauge and schedule a delivery if you're low.
  • Clogged Fuel Filter: Inspect the fuel filter for blockage and replace it if necessary (see instructions below). Caution: involves handling fuel.
  • Reset Button Itself: Examine the button for visible damage or if it's stuck.
  • More Complex Issues: For problems with the nozzle, ignition system, motor, or pump, contact a qualified HVAC technician immediately.

Table of Contents

Why Won't My Oil Burner Reset Button Work?

The reset button's primary function is to restart the burner after it has shut down due to a malfunction. This shutdown, often called a "lockout," is designed to prevent potential hazards like overheating or fuel leaks.

When the burner detects an issue, such as a flame failure, a clogged fuel line, or a problem with the ignition system, it automatically locks out to prevent further damage.

Pressing the reset button allows you to restart the system after addressing the underlying problem. Simply hitting the reset button repeatedly without investigating the cause of the lockout won't solve the underlying issue and could even make things worse.

It’s important to distinguish the reset button from the emergency switch, which completely shuts off power to the burner. The emergency switch is typically a red lever or toggle switch located near the burner and should only be used in emergencies.

Common Causes & Quick Fixes: Simple DIY Checks

Before you assume the worst and start dialing for emergency service, there are a few simple checks you can perform yourself that might quickly resolve the issue:

Power Supply

  • Check the Circuit Breaker/Fuse Box: Head to your electrical panel and check if the breaker controlling your oil burner has tripped or if a fuse has blown. If so, reset the breaker or replace the fuse.
  • Check the Emergency Switch: Ensure the emergency switch near the burner is in the "on" position. It's easy to accidentally bump this switch, cutting off power to the system.

Thermostat Settings

  • Verify Thermostat Settings: Make sure your thermostat is set to "heat" and that the temperature setting is higher than the current room temperature.
    • A lower setting or accidentally switching to "cool" can prevent the burner from starting.
  • Check Thermostat Batteries: A low battery in your thermostat can sometimes cause communication issues with the burner.
    • Try replacing the batteries as a simple troubleshooting step.

Oil Level

Check the Oil Tank Gauge: An empty or near-empty oil tank is a frequent culprit for burner problems. Check your tank gauge to ensure you have sufficient oil.

Running out of oil can damage your burner and introduce air into the fuel lines, leading to further complications. If you are low, schedule an oil delivery immediately.

Troubleshooting More Complex Oil Burner Issues

If the simple checks haven't resolved the issue, it's time to delve into more complex possibilities.

Remember: While some of these checks can be done yourself, others require the expertise of a qualified HVAC technician. Proceed with caution and prioritize your safety.

Fuel Filter Clog

A clogged fuel filter restricts the flow of oil to the burner, preventing it from igniting properly. Over time, sediment and debris can build up in the filter, hindering oil flow.

Checking and Replacing

  • Locate the fuel filter (usually near the oil tank or burner).
  • You might need a wrench to remove it.
  • A heavily clogged filter will appear dark and dirty.

While you can replace the filter yourself (following manufacturer instructions carefully), it involves handling fuel, so proceed with caution.

Related: How to Replace the Oil Filter of Your Oil Furnace

Safety First:

  • Wear gloves and eye protection.
  • Have rags handy to clean up any spills.

Reset Button Malfunction

Visual Inspection:

  • Examine the reset button itself.
  • Does it appear damaged, cracked, or stuck?

A faulty button may not be making proper electrical contact.

Electrical Issues

While less common, there could be an electrical issue with the wiring connected to the reset button. Do not attempt to troubleshoot electrical problems yourself unless you have experience working with electricity. This is a job best left to a professional.

Nozzle Issues

The nozzle atomizes the oil into a fine spray for proper combustion. A clogged or damaged nozzle can disrupt this process.

Do not attempt to clean or replace the nozzle yourself. This requires specialized tools and knowledge. A professional technician can diagnose and resolve nozzle problems safely and effectively.

Related: How to Clean an Oil Burner Nozzle with Step-by-Step Instructions

Ignition Problems

Oil burners use different ignition systems (e.g., electronic, intermittent). Troubleshooting these systems requires specialized knowledge and can be dangerous if not handled correctly.

Motor or Pump Issues

The motor drives the oil pump, which delivers oil to the burner. Problems with either component can prevent the burner from functioning.

Diagnosing and repairing motor or pump issues is complex and requires specialized tools and expertise. Always contact a qualified HVAC technician for these repairs.

This section covers more complex scenarios. Remember to prioritize safety and call a professional if you're unsure about any of these procedures.

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