1. Temperature resistance grade: The wires near the compressor must use high-temperature wires (such as 105°C or even 125°C grades), as ordinary PVC wires (70°C) will age and become brittle under long-term high temperatures, which is extremely dangerous.
2. Insulation and flame retardancy: It is necessary to choose flame-retardant materials (such as the VW1 standard) to prevent the fire from spreading along the wires in case of a fault.
3. Conductor material: Copper wire must be used! Absolutely not to use cheap copper-clad aluminum or aluminum wires. Aluminum has a high resistance, is prone to oxidation, and has high brittleness. The connection points are prone to sparking and overheating, which is a serious fire hazard.
4. Maintenance and replacement principle: Signal wires: Must use double-stranded wires of the same specification, and cannot randomly replace them with two ordinary parallel wires, otherwise it may lead to inaccurate control.
Power wires: The wire diameter can only be thicker than the original wire or the same, and must not be thinner. For example, the original compressor wire is `2.0mm²`, and `1.5mm²` cannot be used as a replacement, otherwise it will overload and overheat.
Connection handling: Must use welding or special copper terminal crimping, and then wrap with high-quality insulating tape (such as PVC electrical tape) or heat shrink tubing. Twisting + ordinary tape is the root cause of future failures.
Post time: Sep-12-2025