1 Compressor vs Starter Relay Distinction
A very common overcharge tactic is claiming the compressor is dead when only the simple PTC Starter Relay or Overload Protector capacitor has burnt out.
Clicking Sound with No Cooling
If the fridge clicks every 2-3 minutes, the compressor starter relay is frequently the culprit. Insist on testing relay resistance before accepting a full compressor replacement quote.
Actual Compressor Seizure
Occurs when internal valves fail or motor windings ground. A technician must use a digital multimeter to measure resistance across the Run, Start, and Common pins.
2 The 3-Step Gas Recharge Standard
If your refrigerator has lost its cooling capability, a reputable technician will adhere to this sequence:
- Nitrogen Pressure Leak Detection: Injecting dry nitrogen to find the microscopic pinhole leak in the condenser or evaporator coil.
- Filter Drier Replacement: Splicing in a new copper filter-drier to capture moisture before pulling a deep vacuum.
- Weight-Based Charging: Refilling the exact grams of gas specified on the rating plate (e.g., 65g of R600a or R134a) using a precision digital scale.
3 Pre-Booking Phone Screening Questions
Q1: "Does your gas recharge quote include nitrogen leak testing and filter-drier replacement?"
If they say leak testing is extra or optional, avoid that technician.
Q2: "What is your warranty period on gas refilling and copper brazing joints?"
A quality repair comes with at least 90 days to 6 months cooling warranty.
4 Verification Checklist Before Technician Leaves
Verification Steps
- — Let the fridge run for 20-30 minutes; ensure the freezer cooling coil develops uniform frost.
- — Feel the side body or back condenser—it should feel warm to the touch (normal heat dissipation).
- — Ensure the charging port valve is tightly sealed and leak-tested with soap solution.