🛠️ Indoor Unit Overhaul – Complete Service Report

Описание: 🛠️ Indoor Unit Overhaul – Complete Service Report
1️⃣ Initial Condition Inspection 🔍
• Indoor unit found with heavy dirt accumulation on evaporator coil
• Blower wheel contaminated with dust and oil
• Evaporator bracket holder heavily rusted
• Reduced airflow causing low suction pressure and poor cooling performance
2️⃣ Electrical Isolation ⚡
• Power supply disconnected and unit safely isolated before servicing
3️⃣ Complete Disassembly 🧰
• Removed front panel, filters, drain tray, and blower assembly
• Accessed evaporator coil for deep cleaning
4️⃣ Chemical Cleaning – Evaporator 💧
• Applied CoilSafe cleaner (1:3 dilution) to evaporator coil
• Removed dust, grease, and oil deposits
• Coil thoroughly rinsed and dried
• Result: Improved heat transfer and airflow ❄️
5️⃣ Blower Motor & Wheel Service 🌀
• Blower wheel removed and cleaned
• Blower motor shaft manually rotated
• Applied rust-penetrating lubricant to ensure smooth bearing operation
• Verified free and balanced rotation
6️⃣ Corrosion Treatment 🧱
• Evaporator bracket holder found severely rusted
• Rust cleaned and anti-rust primer applied to prevent further corrosion
7️⃣ Drain System Service 💦
• Drain tray cleaned and flushed
• Drain line checked for blockage and proper water flow
8️⃣ Reassembly 🔧
• Reinstalled blower assembly, filters, and panels
• Ensured proper alignment and secure mounting
9️⃣ Operational Testing 📊
• Tested blower speeds (low / medium / high)
• Verified smooth motor operation
• Checked airflow and noise level
• Confirmed overall indoor unit functionality
⚠️ Diagnostic Note
Restricted airflow due to a dirty evaporator can cause low suction pressure, which may lead to incorrect refrigerant charging.
Overcharging increases compressor load and discharge temperature and may result in compressor failure.
✅ Final Result
• Evaporator coil cleaned and restored
• Airflow significantly improved
• Blower motor running smoothly
• Corrosion treated and protected
• Drain system functioning properly
• Indoor unit operating at optimal performance
🧊 Status
Indoor unit servicing and restoration completed successfully.

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