2 Kallang Pudding 
AIRCON PORTFOLIO
Mitsubishi Aircon Gas Leak Repair at FCU on 8 Nov 2025
📍Project Location
355 Bukit Timah Rd
🏠 Property Type
Condo
Mitsubishi Aircon gas leak repair at FCU case was performed at Wing On Life Garden Condo. The homeowner reported that their system was not cooling properly.
This issue was affecting comfort significantly, especially during warm weather. The client turned to Homeone for a fast and compliance solution. Our BCA-trained installer team quickly responded, performed a full diagnostic, and restored cooling performance with precision.
Site Findings:
✅ Indoor Unit Model: MSXY-FN13VE, MSXY-FN18VE
✅ Outdoor Unit Model: MXY-3G28VA2
Upon arrival, our team conducted a detailed inspection and identified the following:
Low Refrigerant Pressure: Pressure gauge showed only 10 PSI, well below optimal range for R410A systems.
Leak Source Identified: Copper pipe flare joint at FCU was found to be leaking gas due to poor sealing.
System Specification:
• Refrigerant: R410A
• Required Charge: 2.0 kg (verified on unit data plate)
Repair Job Scope
Our team performed the following steps to complete the Mitsubishi aircon gas leak repair at FCU:
- Power Shutdown & Safety Isolation
- Removed Indoor Unit Cover & Insulation Wrap
- Identified Copper Pipe Flaring Joint Leak at FCU
- Re-flared the Copper Pipe Connection for Leak-Free Fit
- Pressure-Tested with Nitrogen to Confirm No Leaks
- Performed System Vacuuming to Remove Air & Moisture
- Recharged Refrigerant R410A Up to 2.0 kg (as per unit specification)
- Restarted System and Performed Full Diagnostics (Temperature Analysis & Super Heat Analysis)
✅ Once recharged and tested, the system resumed optimal cooling performance with stable pressure and temperature.
🔍 What is Heat Transfer Analysis?
Heat transfer analysis helps determine how effectively the air conditioner cools the space by measuring the temperature difference between the air entering the indoor unit (inlet) and the cooled air discharged back into the room (outlet). This confirms cooling efficiency after repair.
📊 Mitsubishi Aircon Heat Transfer Reading after Repair:
- 🔁 Inlet Air Temp (Room to Indoor Unit): 21°C
- ❄️ Outlet Air Temp (Indoor Unit to Room): 13°C
✅ Result: An 8°C temperature drop — confirming the Mitsubishi aircon system is cooling efficiently after the gas leak repair at FCU and R410A recharge.
🌡️ What is Superheat Analysis?
Superheat analysis is a critical diagnostic method used in air conditioning systems. It measures the temperature of refrigerant vapor after it exits the evaporator coil, confirming that the refrigerant has fully evaporated. This ensures no liquid refrigerant reaches the compressor — protecting the system from damage and verifying correct refrigerant charge.
📊 Mitsubishi Aircon Superheat Reading after Gas Leak Repair:
- 🌡️ TLow (Evaporator Line Temperature): 12.3°C
- 🔥 SH (Superheat): 5.8°C
- 📈 VSAT (Saturation Temp): 6.5°C
✅ Result: A superheat value of 5.8°C falls within the ideal operating range for Mitsubishi systems using R410A. This confirms that the refrigerant is fully evaporating and the system is functioning efficiently after the gas top-up and leak repair at the FCU.
🔧 Conclusion
The cooling issue was successfully resolved with a precise Mitsubishi aircon gas leak repair at FCU. Our diagnostics identified a leaking copper pipe flare joint, which caused refrigerant loss and low pressure. After sealing the leak, vacuuming the system, and topping up R410A refrigerant to the required 2.0 kg, we conducted performance testing. Both heat transfer and superheat analysis confirmed restored system performance and stable operation.
In addition to gas leak repairs, Homeone offers a full suite of air conditioning services:
- ✅ New aircon installations
- ✅ Aircon relocation services
- ✅ Chemical wash (indoor and outdoor units)
- ✅ Gas top-up and refrigerant leak repair
- ✅ Nitrogen purging and system vacuuming
All services are performed by BCA-trained aircon installers. Where necessary, we also handle the submission of AC-01 and AC-02 Forms for regulatory compliance.
💬 Need Help With Your Aircon?
Whether it’s a Mitsubishi aircon gas leak repair at FCU or a full system installation, our BCA-certified team is ready to assist.
📞 Call us now: +65 8866 4770