When the Samsung aircon flashes E5 59, it’s telling you that the indoor and outdoor units can’t communicate with each other. This drop in communication can trigger weak cooling and complete failure of the unit. Let’s break down why this error happens and how to fix it.
What Does E5 59 Mean?
The Samsung aircon error E5 59 is usually related to a communication failure. Specifically:
- E5 indicates an outdoor unit fault.
- 59 is a sub-code pointing to communication failure between the indoor and outdoor PCB (Printed Circuit Board).
This means the signals being sent from your indoor unit are not reaching the outdoor unit, or vice versa.
Causes of Error Code E5 59
Here are some common reasons why this happens:
- Loose or damaged wiring between the indoor and outdoor units.
- Power supply issues or electrical surges.
- Faulty PCB in the indoor or outdoor unit.
- Corroded or disconnected terminals.
- Installation issues during setup or servicing.
How to Fix Samsung Aircon E5 59 Error
This error typically needs professional attention, but here are the general steps technicians follow:
1. Power Reset
Turn off the aircon for 5–10 minutes and switch it back on. Sometimes, the error clears if it was caused by a temporary glitch.
2. Check the Wiring
Technicians will inspect the wiring between the indoor and outdoor units. They will look for:
- Loose connections
- Cut or damaged cables
- Burn marks or signs of overheating
3. Test Communication Line
A multimeter may be used to test the voltage across communication terminals to ensure signal transmission is working properly.
4. Inspect PCBs
If wiring is intact, the PCBs (indoor or outdoor) may be faulty. One or both boards might need replacement if they’re not sending or receiving signals correctly.
5. Examine Power Supply
Technicians will also verify if the aircon is receiving the correct voltage. An unstable power source can lead to communication errors.
Should You Try to Fix It Yourself?
It is not recommended to open or tamper with the internal wiring or PCB unless you are a qualified technician. The E5 59 error involves electrical components that should only be handled by licensed professionals.
If you’re in Singapore, you can contact a BCA-licensed aircon technician for a reliable diagnosis and safe repair.
How to Prevent This Error in Future
- Regular servicing of your aircon (every 3–6 months).
- Ensure proper installation by a licensed technician.
- Avoid voltage fluctuations using surge protectors or stabilisers.
- Keep external units sheltered from extreme weather and moisture.
FAQ
What is Samsung E5 59 error?
It indicates a communication failure between the indoor and outdoor units.
Can I use the aircon with E5 59 error?
No. The aircon may stop working or work inefficiently until the error is fixed.
Will resetting the unit help?
A temporary reset may clear the error, but if it keeps coming back, professional servicing is needed.
Is this error common in Singapore?
Yes, especially during the hot season when ACs are used more frequently and may face wear or surge-related issues.
How much does it cost to fix E5 59?
It depends on whether it’s a wiring issue or PCB replacement. A basic service call can cost $40–$80, while PCB replacement may cost more.
