Genuine Tecumseh R404 Compressor for Refrigeration & Heat Exchange Models FH 5522F TFH5522F FH 5524F TFH 5524F FH 5528F TFH5528F

Cooling Capacity (W) Reference:

FH5522F / TFH5522F: -10°C → 2298 W, +7.2°C → 5483 W

FH5524F / TFH5524F: -10°C → 2484 W, +7.2°C → 5929 W

FH5528F / TFH5528F: -10°C → 2914 W, +7.2°C → 6811 W

Features & Advantages:

This group features medium-displacement models within the FH series, with displacements ranging from 40.8 to 49.0 cc, delivering cooling capacities from 2 HP to 2¼ HP. These compressors are compact in size and easy to install, offering excellent high-pressure resistance and strong operational adaptability across varied conditions. For each displacement, both single-phase (FH) and three-phase (TFH) versions are available, providing flexible matching to different power supply configurations. They are particularly well-suited for residential air-cooled air conditioning systems and cold storage / refrigeration applications. The stepped displacement design (40.8 → 43.9 → 49.0 cc) creates a clear power gradient, enabling precise model selection based on specific cooling load requirements.

• Cause: Start capacitor degradation or start relay contacts welded shut; the compressor itself is not faulty.

• Answer: First measure the run/start capacitor µF value and replace with the same specification; then check terminal resistance (C-R / C-S / R-S). If resistance values are normal and insulation-to-ground is >2 MΩ, the compressor is fine — do not replace it.

• Cause: Three-phase voltage imbalance (>2% voltage imbalance ≈ 10% current imbalance), dirty condenser coil fins, or outdoor fan motor failure → discharge temperature exceeds 115 °C and triggers protection.

• Answer: Measure three-phase voltage/current balance; clean the condenser coil; check the outdoor fan capacitor and windings. The protector self-resets after 30–60 minutes — do not force continuous restarts.

• Cause: Insufficient evaporator airflow, outdoor unit exposed to direct sunlight without shade, or annual R22 leakage not replenished.

• Answer: Check the air side first, then the refrigerant side. The 55-series high-temperature units are extremely sensitive to condensing temperature — 54.5 °C is the rated upper limit; beyond that, cooling capacity drops sharply.