LG AC Gas Leakage Repair in Chennai
Refrigerant leaks starve the coil, so cooling drops off and the unit runs non-stop.
Refrigerant leaks starve the coil, so cooling drops off and the unit runs non-stop. On LG dual-inverter split systems, a drop in R32 or R410A gas pressure forces the variable-speed compressor to run at maximum frequency continuously. In Chennai's humid coastal climate, this constant load without adequate refrigerant causes severe sweating along the suction line and eventually triggers error codes like CH 38 on digital displays, signaling low refrigerant protection.
Common Symptoms of LG AC Gas Leaks- Continuous compressor operation without achieving the target set temperature.
- Ice or thick frost buildup on the outdoor unit's brass flare valves or indoor evaporator coil.
- Hissing or faint bubbling sounds coming from behind the indoor unit louvers.
- Water leaking from the indoor unit due to coil icing and premature thawing.
- LG display displaying fault codes CH 38 or CH 36.
- Formicary Corrosion on Evaporator Coils: Microscopic pinhole leaks forming on copper heat exchangers due to airborne pollutants interacting with Chennai's high humidity.
- Vibration-Induced Flare Nut Loosening: Thermal expansion and compressor vibrations causing minor gaps at the brass connection joints between indoor and outdoor copper piping.
- Capillary and Service Valve Seal Degradation: Hardened rubber O-rings or worn schrader valves on the outdoor service ports letting refrigerant escape slowly over time.
- Friction Rubbing in Interconnecting Pipework: Copper lines rubbing against the outdoor chassis or bracket due to missing insulation cushions.
- High-Pressure Nitrogen Isolation Test: We pressurize the indoor coil, outdoor unit, and copper lines separately with dry nitrogen up to 350-450 PSI to pinpoint the exact leak location using electronic detectors and bubble solutions.
- Precision Brazing & Joint Restoration: Our technicians repair copper tube pinholes using silver brazing rods or replace damaged flare nuts with precision-flared heavy-duty copper joints.
- System Evacuation with Vacuum Pump: We run a deep dual-stage vacuum down to 500 microns to extract moisture, air, and non-condensable gases from the circuit.
- Weight-Based R32/R410A Gas Charging: We recharge exact factory-specified refrigerant grams using digital charging scales to restore optimal operating pressures and subcooling levels.
Stop wasting electricity on an uncooling AC. Contact Janani Cool Care today for reliable LG gas leak detection, brazing, and gas refilling across Chennai. Call +91 99410 82878 now to schedule a certified technician. All leak repairs include our standard 30-day service warranty.
How Janani Cool Care fixes it
Book online or call
Pick your service, choose a date and time slot, and share your address. We confirm the slot within 15 minutes.
Technician arrives
A verified technician reaches your doorstep at the scheduled time — you are notified when they are on the way.
Diagnosis & transparent quote
The technician inspects the appliance, explains the issue, and shares upfront pricing before any work begins.
Service performed
Work is carried out on the spot wherever possible, using proper tools and genuine spares.
Performance check
The appliance is tested after service to confirm everything works as expected before the technician leaves.
Invoice & 30-day warranty
You get a digital invoice, and your 30-day service warranty starts from the service date.
AC Gas Leakage on other brands
Frequently asked questions
What does the CH 38 error code mean on an LG Inverter AC?
The CH 38 code indicates low refrigerant levels or severe gas leakage, causing the compressor to shut down to prevent internal damage. Our technicians perform a nitrogen pressure test to find and seal the leak before recharging gas.
Can I just top up gas in my LG AC without repairing the leak?
No, simply topping up gas without sealing the leak is a temporary fix, as the new refrigerant will vent out again within days or weeks. Proper service requires finding the leak, brazing the joint or copper tube, pulling a full vacuum, and then refilling refrigerant.
How long does an LG AC gas leak detection and repair take?
A complete gas leak repair—including nitrogen pressure testing, silver brazing, deep vacuuming, and gas charging—typically takes 2 to 3 hours at your premises in Chennai.
Does Janani Cool Care offer a warranty on gas leak repairs?
Yes, all our LG AC gas leak sealing and gas refilling services come with a 30-day service warranty for your peace of mind.