Jermyn, PA Heating System Reset Tips — HVAC Troubleshooting

Estimated Read Time: 9 minutes

When the heat quits on a freezing NEPA night, you want safe, simple steps that work. This guide explains how to reset your heating system and get warm fast. We cover furnaces, boilers, heat pumps, and ductless units, plus what to check before you reset. If you prefer a pro to handle it, T.E. Spall & Son has same day and emergency service available.

Start Here: Safety First

Before you touch a switch, think safety. A reset forces equipment to try again after a fault. If the fault is still present, forcing repeated restarts can damage parts or create a hazard.

Follow these safety rules:

1. If you smell gas, hear arcing, or see smoke, leave the home and call your gas company and a professional immediately.
2. Do not press a burner or boiler reset more than once. Multiple resets can flood a combustion chamber with fuel.
3. Keep children and pets away from equipment panels while you work.
4. Verify adequate ventilation around the unit and clear combustibles.

Two facts to keep in mind:

• T.E. Spall & Son technicians are 100% NCI certified in carbon monoxide safety and combustion analysis. Your family’s safety is our first concern.
• The U.S. Department of Energy notes a clogged filter can increase HVAC energy use by up to 15 percent. Always check filters early in your process.

Quick Checks Before Any Reset

Many no-heat calls come down to power, fuel, or airflow. Handle these basics first.

1. Thermostat

   • Set to Heat, Fan Auto, and a temperature 3 to 5 degrees above the current room temp.
   • If it is battery powered, replace batteries.

2. Power

   • Confirm the furnace or air handler switch is on. It often looks like a light switch near the unit.
   • Check the breaker panel for a tripped breaker. Reset a tripped breaker once by moving it fully off, then on.

3. Airflow

   • Replace or clean the filter if dirty. A starved system can overheat and lock out.
   • Open supply registers and ensure returns are not blocked by furniture.

4. Fuel

   • Gas: Make sure the gas valve ahead of the furnace or boiler is in line with the pipe.
   • Oil: Confirm there is enough fuel in the tank.
   • Heat pump: After power outages, give the system 5 minutes for built-in safeties to clear.

If the system still does not start, proceed to the correct reset method for your equipment.

How To Reset a Gas Furnace Safely

Most modern gas furnaces use electronic ignition and control boards that lock out after repeated failed starts.

Steps:

1. Turn the thermostat to Off.
2. Locate the furnace power switch and turn it Off. Wait 60 seconds.
3. Replace a dirty filter if needed.
4. Restore power. Set thermostat to Heat and call for temperature 3 to 5 degrees higher than room temp.
5. Watch and listen for sequence of operation: inducer fan, pressure switch click, igniter glow or spark, gas valve open, then main flame.

If the furnace fails and retries, do not keep cycling. One controlled reset is enough. Continuous lockouts suggest a problem with ignition, flame sensing, pressure switch, or venting. That is the time to call a pro.

How To Reset an Oil Furnace or Boiler

Oil burners typically have a red reset on the primary control. Use it with caution.

Steps:

1. Thermostat to Off. Confirm you have oil in the tank and power at the switch.
2. Press the red reset button once only. If it immediately trips again, stop.
3. After one reset, set thermostat to Heat and watch for burner start. You should hear the motor, then ignition, then smooth flame.
4. If the burner runs rough, smokes, or trips again, call a technician. Multiple resets can flood the chamber with unburned fuel and create a dangerous condition.

Tip: Many oil systems have a safety device called a cad cell that monitors flame. If it cannot prove flame, it locks out. That is a professional diagnostic.

How To Power Cycle a Boiler With Electronic Controls

Hydronic boilers with electronic boards can often be cleared with a power cycle.

Steps:

1. Turn the boiler service switch Off for 60 seconds.
2. Verify water pressure on the gauge. Typical residential hydronic systems read 12 to 20 psi when cold. If pressure is at zero, do not reset. Call for service.
3. Turn power On and set the thermostat or zone control to call for heat.
4. Verify pump operation and burner firing sequence. If the burner trips, do not continue cycling.

If your boiler has a low water cutoff and it has tripped, the cause must be corrected before reset. Low water can damage the heat exchanger.

How To Reset a Heat Pump or Ductless Mini Split

Heat pumps include time delays and defrost controls. After a power outage or short cycle, the system may protect itself for several minutes.

Steps:

1. Set thermostat or remote to Off.
2. Turn the heat pump breaker Off for 2 minutes to clear the board.
3. Turn the breaker On. Wait 5 minutes for internal delays to expire.
4. Set to Heat and raise the setpoint 3 to 5 degrees.
5. In winter, the outdoor unit may run a defrost cycle for 5 to 15 minutes. Steam is normal during defrost.

If you see heavy ice that does not melt or the outdoor fan never turns, schedule service. Pro diagnostics can confirm sensor, reversing valve, or refrigerant issues.

What The Reset Button Actually Does

It is tempting to press the button again when heat does not return. Resist that urge.

• Burner reset: Tells the primary control to attempt ignition again after a safety lockout.
• Furnace board reset: Clears fault memory and restarts the ignition sequence.
• Heat pump power reset: Reinitializes sensors, time delays, and defrost control.

If a safety trips twice, it is protecting you from a real fault. Repeated resets can damage igniters, motors, and control boards, and they can create unsafe combustion.

Thermostat and Sensor Issues That Mimic No Heat

Many no-heat symptoms come from controls rather than the equipment.

Check these common causes:

1. Incorrect thermostat mode or schedule

   • Temporary holds can expire. Confirm mode is Heat, not Cool.

2. Location problems

   • A thermostat near a sunny window or register can read falsely high.

3. Dirty flame sensor

   • Gas furnaces may fire briefly then shut down. A dirty sensor cannot prove flame. This is a simple pro fix.

4. Tripped float or condensate switch

   • High efficiency furnaces and air handlers shut off if condensate backing up is detected.

5. Loose low voltage wiring

   • A loose common wire at the furnace board can drop the call signal.

When in doubt, take a clear photo of your thermostat and equipment labels and call our team for guidance.

When Not To Reset and Call a Professional

Resetting is a good first step when power flickers or a filter is clogged. It is not the answer when there is a deeper fault.

Call a pro immediately if you notice:

• Gas smell or repeated ignition clicks without flame
• Soot, smoke, or scorch marks near the unit or vent
• Loud grinding or screeching from motors
• Water on the floor near a boiler or high efficiency furnace
• Ice buildup on heat pump coils that does not clear in 30 minutes

Also call if your system trips right after a single reset. Our certified technicians will diagnose fuel delivery, venting, combustion, and control issues to restore safe operation.

After a Successful Reset: Verify Heat the Right Way

Once the system runs, confirm performance so the problem does not return.

1. Air temperature

   • At a supply register, you should feel warm air within a few minutes on a furnace. Boilers will warm radiators or baseboards more gradually.

2. Cycle stability

   • The system should run steadily to temperature without short cycling.

3. No abnormal smells

   • A brief hot dust smell is normal after long downtime. Persistent odors are not.

4. Outdoor unit behavior

   • Heat pumps may steam during defrost. That is normal. Solid ice is not.

If anything looks off, schedule a tune-up. A professional cleaning and combustion check can boost safety and efficiency.

Prevent Future Lockouts With Simple Maintenance

Small tasks prevent the majority of nuisance shutdowns.

• Replace filters every 1 to 3 months, more often with pets or renovations.
• Keep the outdoor heat pump unit clear of snow and leaves. Maintain 18 inches of clearance.
• Test CO alarms monthly. Replace batteries twice a year.
• Schedule annual maintenance. Our plans include comprehensive inspection, cleaning, and adjustments that reduce surprise breakdowns.

Customers in our maintenance plan receive same day and emergency service 365 days a year and discounts on heating repairs. That means faster help on the coldest Scranton mornings.

NEPA Local Insight: What Winter Does To Your System

Our winters bring long cold snaps, lake effect winds, and heavy snow that stress heating systems.

• Heat pumps work harder below freezing. Keep coils clear and plan annual service before first frost.
• Gas furnaces in tight homes can struggle with makeup air. A blocked intake or exhaust will trip safety switches.
• Oil tanks can gel in severe cold if untreated. Keep deliveries timely and let us inspect the nozzle and filter before winter.

Decades of local service taught us how to prevent these seasonal issues and keep homes in Scranton, Wilkes Barre, and throughout NEPA comfortable.

Commercial and Rooftop System Note

If you manage a building with rooftop units or a boiler plant, do not rely on resets to keep tenants warm. Commercial controls log faults for a reason and often require a licensed technician to clear safely. We offer full commercial installation, repair, and maintenance, including rooftop heating systems that improve accessibility and free up floor space. Priority scheduling is available for maintenance agreement customers.

When a Reset Is Not Enough: What Our Techs Check

If a single reset did not solve it, our diagnostic approach finds the root cause quickly.

We test:

1. Combustion and CO safety with calibrated analyzers
2. Ignition systems and flame sensors
3. Pressure switches and venting integrity
4. Fuel pressure and delivery for gas and oil
5. Control board fault codes and thermostat communication
6. Heat pump refrigerant charge, sensors, and defrost operation

We explain findings in plain language and present clear options. Our straightforward pricing means no surprises. If an upgrade is smarter than a repair, we can align financing and rebates with your comfort goals.

Special Offers To Save On Heat and Peace of Mind

• Save 15% on comprehensive system diagnostics for Energy Savings Service Plan members. Join the plan and get same day and emergency service 365 days a year, plus repair discounts.
• Pay 50% less on after-hours service fees as a plan member. Perfect for those late-night lockouts.
• EASE Comfort Program: Get a new high efficiency system with no money down and a built-in maintenance program. Subject to credit approval.
• Ductless heat pump as low as $99 per month with EASE Comfort. Restrictions apply.

Call (570) 230-8821 or visit https://www.thecomfortdoctors.com/ to redeem these offers and enroll.

What Homeowners Are Saying

"It was a pleasure having Eric service my residence AC units... I am looking foward to more of the services that Eric and I had discussed relating to service to the heating and water heating units. I would definitely recommend T.E. Spall and their HVAC services to others."
–Suzette J., Heating Service

"Spall and Son was able to get me on their installation calendar... The price after installation was EXACTLY the price he quoted... I look forward to a cool summer and warm winter with my new ductless heat system!"
–Cherish S., Hawley, PA

"We also use Spall for our heating system. Cannot say enough good things about this company!!!!"
–Anna K., Heating Service

"Very satisfied... professional and knowledgeable about options for new heating system, took time to explain everything clearly, great experience"
–Fred H., Heating System Consultation

Frequently Asked Questions

Where is the reset button on my furnace?

Often on or near the blower compartment or control board, behind the front panel. Some systems only reset by cycling power at the switch or breaker. Check your manual or call our team for guidance.

Is it safe to press my boiler reset?

Yes, once. If the boiler trips again, stop and call a professional. Multiple resets can flood the chamber or mask a low-water or combustion issue that needs expert diagnosis.

How long should I wait after turning power back on?

Wait 5 minutes. Many furnaces and heat pumps include built-in delays to protect compressors and controls. Heat pumps may also run a 5 to 15 minute defrost cycle in winter.

Why does my furnace start then shut off?

Likely a flame sensor, dirty filter, blocked vent, or pressure switch problem. Try a new filter once. If it persists, schedule service to clean sensors and verify combustion and venting.

Should I reset after a power outage?

A single reset or power cycle is fine. If the system does not resume normal operation, there is another fault. Do not continue resetting. Call a certified technician for safe diagnostics.

Wrap Up

A careful, single reset can bring heat back fast, but repeated resets are risky. Use the steps above to reset your heating system safely and know when to call a pro. For reliable help with how to reset a heating system in Scranton and NEPA, reach out today.

Call or Schedule Now

• Phone: (570) 230-8821
• Web: https://www.thecomfortdoctors.com/
• Active savings: Plan members get 15% off diagnostics and 50% off after-hours fees. Ask about EASE Comfort no money down options.

Get your home warm again the right way. The Comfort Doctors are ready when you are.

Call (570) 230-8821 or schedule at https://www.thecomfortdoctors.com/ for same day heating help. Join the Energy Savings Service Plan for 15% off diagnostics and 50% off after-hours fees. Stay warm and save all winter.

About T.E. Spall & Son

Since 1985, T.E. Spall & Son has served Northeastern Pennsylvania with straightforward pricing, certified technicians, and solutions that last. Our team holds 100% National Comfort Institute certification in carbon monoxide safety and combustion analysis. We install, repair, and maintain furnaces, boilers, and heat pumps, including ductless systems and commercial rooftop units. Multiple national awards back our technical excellence. We are The Comfort Doctors homeowners trust.