If your aircon keeps tripping your circuit breaker, it’s not something you should ignore.
It’s one of the most common issues in HDB flats — and it usually points to a deeper electrical or system problem.
⚠️ What Does “Power Trip” Mean?
A power trip happens when your circuit breaker shuts off electricity to prevent overheating or damage.
This is a safety feature — not a fault.
But if it happens frequently, something is wrong.
🔧 Common Reasons Your Aircon Keeps Tripping
1. Electrical Overload (Most Common)
This happens when your system draws more power than your flat can handle.
Example:
- Aircon running
- Water heater switched on
- Kitchen appliances in use
👉 Combined load exceeds your limit → power trips
This is especially common in older HDB flats with lower electrical capacity.
2. Faulty Aircon Compressor
A failing compressor can:
- Draw excessive current
- Cause sudden spikes
- Trigger the breaker
3. Dirty or Blocked System
When airflow is restricted:
- System works harder
- Power usage increases
- Overload risk goes up
4. Wiring Issues
- Undersized cables
- Loose connections
- Old wiring
These can cause instability and tripping.
5. Too Many Systems Installed
Some homeowners install multiple aircon systems without proper planning.
👉 This can easily overload the electrical system.
If you are considering installing more than one compressor, read this first:
https://lioncityaircon.sg/installing-a-2nd-aircon-compressor-in-hdb-30a-vs-40a-guide-singapore-2026/
💡 How to Fix Aircon Tripping Issues
Start with the basics:
- Turn off unused appliances
- Avoid running heater and aircon together
- Service your aircon regularly
If the issue continues:
👉 Get a professional to check your system and electrical load.
🚫 What NOT to Do
- Ignore repeated tripping
- Keep resetting the breaker
- Install additional systems without checking capacity
👉 These can lead to bigger damage and higher costs later.
📞 When to Call a Professional
You should get help if:
- Tripping happens frequently
- Aircon stops working suddenly
- You plan to upgrade or install new systems
At Lion City Aircon, we help you:
- Identify the root cause
- Check your electrical load
- Recommend safe solutions
👉 Contact us for a proper inspection before the problem gets worse.
📞 Call or WhatsApp: +65 8818 5781
🌐 Visit: https://lioncityaircon.sg
❓ Frequently Asked Questions
Is it normal for aircon to trip occasionally?
No. Occasional trips may happen, but repeated tripping means there is an issue.
Can aircon overload cause fire risk?
Yes. That’s why circuit breakers trip — to prevent overheating.
Does installing more compressors increase tripping risk?
Yes, especially if electrical capacity is not properly checked.
