Introduction

Nigeria’s hot climate causes many inverters to overheat, especially during:

✔ dry season
✔ midday peak heat
✔ long hours of usage
✔ heavy load conditions

An overheating inverter is dangerous because it can:

❌ shut down frequently
❌ damage internal components
❌ reduce efficiency
❌ cause fire hazards
❌ shorten lifespan

In this guide, Solarzone Nigeria explains why your inverter is overheating — and how to fix it permanently.

⭐ 1️⃣ Inverter Installed in a Hot, Poorly Ventilated Space

Most overheating issues come from installation location.

❌ Bad inverter locations:

• inside wardrobes

• tight wooden cabinets

• small sealed rooms

• hot generator houses

• top of freezers/fridges

• under stairs with no ventilation

• areas with no airflow

✔ Fix:

Place inverter in:
✔ cool room
✔ open space
✔ well-ventilated area
✔ wall with airflow
✔ shaded space with cross ventilation

📌 Heat kills inverters faster than anything else.

⭐ 2️⃣ Blocked or Dusty Cooling Vents

Dust blocks airflow and makes the inverter hot.

✔ Fix:

• clean inverter vents monthly

• wipe using a dry cloth

• avoid water

• install dust filters if needed

If air can’t pass through, temp rises quickly.

⭐ 3️⃣ Faulty or Weak Inverter Cooling Fan

If the cooling fan is not spinning:

• inverter overheats

• shuts down randomly

• makes clicking noise

• stays unusually hot

✔ Fix:

• replace inverter fan

• check fan power supply

• clean fan chamber

Solarzone replaces faulty fans for all inverter brands.

⭐ 4️⃣ Overloading the Inverter

Too many appliances make inverter work harder → more heat.

❌ Heat-generating appliances:

• freezer

• AC

• kettle

• microwave

• iron

• electric cooker

✔ Fix:

• reduce heavy load

• upgrade inverter capacity

• use energy-efficient appliances

Heavy loads = fast overheating.

⭐ 5️⃣ Weak or Failing Batteries

Weak batteries increase inverter strain.

❌ Effects:

• inverter draws high amperage

• generates excessive heat

• runs hard to maintain output

✔ Fix:

• test batteries

• replace weak batteries

• upgrade to lithium

Lithium batteries reduce inverter heat significantly.

⭐ 6️⃣ Thin or Poor-Quality Cables

Undersized cables overheat and transfer heat to inverter terminals.

✔ Use proper cable sizes:

✔ 10mm
✔ 16mm
✔ 25mm

✔ Fix:

Solarzone replaces thin wires with proper-sized cables.

⭐ 7️⃣ Faulty Internal Components (MOSFETs, Capacitors, Relays)

When components fail:

• inverter heats up instantly

• trips under small load

• refuses to run continuously

✔ Fix:

Solarzone repairs:
✔ MOSFETs
✔ capacitors
✔ relays
✔ transformers
✔ complete inverter board

⭐ 8️⃣ Inverter Installed Too Close to the Wall

Inverters need space around them to breathe.

❌ Problem:

Heat reflects back into inverter.

✔ Fix:

Leave 4–6 inches space on all sides of inverter.

⭐ 9️⃣ High Ambient Temperature (Dry Season Heat)

During extreme heat:

• inverters run hotter

• cooling becomes harder

• system efficiency drops

✔ Fix:

• use room ventilation

• install cooling fans

• reposition inverter

• reduce peak heat load

⭐ 🔟 Solar Panels Not Giving Enough Power

If panels charge weakly:

• inverter drains batteries faster

• inverter works harder

• inverter generates more heat

✔ Fix:

• add more solar panels

• upgrade MPPT

• clean panels regularly

Better charging = less inverter strain.

⭐ 11️⃣ Wrong Inverter Settings

Low voltage cutoff or wrong battery type settings overload the inverter.

✔ Fix:

Solarzone adjusts:
✔ battery type
✔ cutoff voltage
✔ charging type
✔ bulk/float voltage
✔ AC priority

Proper settings reduce heat dramatically.

⭐ 12️⃣ Inverter Running Continuously with Heavy Load

If AC or freezer runs non-stop:

• inverter never rests

• internal temp rises

• thermal shutdown occurs

✔ Fix:

• distribute loads

• use inverter AC

• allow inverter cool-off periods

⭐ 13️⃣ Damaged Heat Sink or Thermal Paste Dry-Out

With time:

• heat sinks loosen

• thermal paste dries

• heat transfer reduces

✔ Fix:

Solarzone re-applies thermal paste & reassembles heat sink.

⭐ When to Call Solarzone for Overheating Problems

Call Solarzone if:
✔ inverter too hot to touch
✔ inverter shuts down during the day
✔ fan not spinning
✔ burning smell noticed
✔ inverter trips under small load
✔ error light blinking
✔ charging fluctuates due to heat

We offer:
⭐ inverter repair
⭐ cooling system upgrade
⭐ wiring correction
⭐ system optimization
⭐ inverter relocation
⭐ ventilation installation

🏁 Final Thoughts

Your inverter overheats because of:
✔ bad installation
✔ heavy load
✔ weak batteries
✔ poor ventilation
✔ faulty fan
✔ internal component failure

The good news?

Overheating can be fixed permanently with proper diagnosis and setup.

Let Solarzone Nigeria repair, relocate, or optimize your inverter for cool and stable operation.

💥 Call to Action

⚡ Is your inverter overheating? Let Solarzone fix it today!
📞 Call/WhatsApp: 09091394722