Transfer Switch (ATS) Service & Repair in North Alabama & Southern Tennessee
Your standby generator depends on a fully functioning Automatic Transfer Switch (ATS) to detect outages and safely switch your home to backup power. When the transfer switch malfunctions, your generator may not start, may fail to supply power, or may not switch back to utility when the grid is restored. Valley Services provides expert ATS diagnostics, repair, replacement, and setup for homeowners across North Alabama and Southern Tennessee.Whether your generator runs but won’t power the home, your transfer switch is stuck, or the system shows communication errors, our licensed technicians identify the root cause and restore safe, reliable operation quickly.
Our Transfer Switch Repair & Service Options
Complete ATS Diagnostics & Troubleshooting
We perform detailed electrical and mechanical testing to identify communication faults, relay problems, control board failures, and switching issues. Accurate diagnosis is essential for safe operation during outages.- Switching Failure Diagnosis
- Communication & Sensor Testing
- Error Code Troubleshooting
- Stuck or Failed Relays
- Control Board Evaluation
Transfer Switch Repair
We repair mechanical components, wiring issues, failed sensors, relays, control boards, voltage sensing modules, and other critical ATS components. Our technicians ensure your switch operates safely and automatically when power is lost.- Relay & Contactor Repair
- Wiring & Connection Corrections
- Voltage Sensing Repair
- Safety System Testing
- Load Transfer Verification
Transfer Switch Replacement
If your ATS is outdated, damaged beyond repair, or incompatible with a new generator, we offer safe and code-compliant replacement. We install both standard and smart transfer switches for Briggs & Stratton, Generac, Kohler, and other major brands.- Manual & Automatic Switch Replacement
- 200A / 400A Switch Options
- Home Integration & Code Compliance
- System Testing & Commissioning
- Brand-Compatible ATS Upgrades
Load Management & Safety Checks
Improper load transfer can damage appliances or cause system shutdowns. We evaluate load capacity, breakers, wiring, grounding, and safety mechanisms to ensure clean, stable power delivery during outages.- Breaker & Load Analysis
- Grounding & Bonding Checks
- Overload Prevention
- Voltage Regulation Testing
- Safe Power Transition
ATS Maintenance & Preventive Testing
Regular ATS service ensures reliable operation during storms and grid failures. We test switching function, electrical response time, control logic, and safety systems to confirm your generator and ATS work seamlessly together.- Annual ATS Checks
- Mechanical Operation Testing
- Control Panel Review
- System Integration Testing
- Preventive Component Maintenance
Why Choose Valley Services for Transfer Switch Repair?
With over 30 years of HVAC and electrical experience, Valley Services provides reliable, code-compliant ATS repairs and replacements for homeowners across North Alabama and Southern Tennessee.| 1Licensed Electrical & Generator Technicians Skilled in both electrical systems and generator integration. |
2All ATS Brands Repaired Briggs & Stratton, Generac, Kohler, Eaton, Siemens, and more. |
3Accurate & Reliable Diagnostics We identify root causes to prevent repeated failures. |
| 4Certified Briggs & Stratton Dealer Factory-trained for advanced ATS and controller systems. |
5Fast Response & Priority Service Especially during outages or system failures. |
6Safe, Code-Compliant Repairs Ensuring proper switching and secure electrical operation. |
Transfer Switch Service AreaWe provide ATS service across North Alabama and Southern Tennessee, proudly serving:Huntsville Madison Athens Decatur Meridianville Hazel Green Harvest Toney Gurley Ardmore Petersburg Fayetteville Pulaski Lynchburg Shelbyville Lawrenceburg Tullahoma Winchester
If your location isn’t listed, call or text—our team often travels beyond the primary service map. |
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Transfer Switch (ATS) FAQs
What are the signs that my transfer switch needs service?
Common signs include failure to transfer power during an outage, delayed switching, clicking sounds, stuck relays, error codes, voltage irregularities, or lights flickering when switching. If your generator runs but your home doesn’t receive power, the ATS is often the cause.
Why won’t my generator power the house even though it is running?
This almost always indicates a transfer switch problem. The ATS may not be sensing the outage, may be failing to close relays, or may have a communication fault. Our technicians diagnose these issues and restore proper operation.
Can you repair all brands of transfer switches?
Yes. We service Briggs & Stratton, Generac, Kohler, Eaton, Siemens, GE, Cutler-Hammer, and other major ATS brands. No matter the manufacturer, we diagnose switching, communication, electrical, and safety issues.
How long does a transfer switch repair or replacement take?
Most repairs take 60–120 minutes. Full ATS replacements typically take 2–4 hours depending on amperage, wiring complexity, and home layout. We provide clear timelines before beginning work.
What causes an ATS to fail?
Common causes include worn relays, voltage-sensing errors, communication failures, wiring issues, moisture damage, outdated components, or improper previous installation. Regular maintenance prevents most failures.
Is it safe to operate a generator with a faulty transfer switch?
No. A malfunctioning ATS can cause improper power transfer, equipment damage, unsafe electrical backfeed, or fire hazards. If you suspect an issue, shut the system down and schedule service immediately.
Does my ATS need regular maintenance?
Yes. Annual ATS testing ensures proper switching, communication, and electrical consistency. A functioning generator is only as reliable as the transfer switch controlling it.
Do you install new transfer switches for replacement generators?
Absolutely. When upgrading or replacing a generator, your existing ATS may be incompatible or undersized. We install manufacturer-approved switches and ensure code compliance and correct wiring.
Can a transfer switch be upgraded to support more loads?
Yes. Many homes benefit from load-management expansion or installing a higher-amperage ATS to support additional circuits or appliances. We evaluate your home’s electrical system and recommend the correct upgrade.
What should I do if my ATS fails during an outage?
Call Valley Services immediately. We offer fast emergency response and can often restore switching functionality or provide temporary solutions until permanent repairs are made.
Schedule Transfer Switch Service or Repair
Call (256) 783-6100 or request service online. Our licensed technicians provide fast, expert ATS repair and replacement across North Alabama and Southern Tennessee.Schedule ATS Service
