Panasonic 5VD420ZAA21 DC Inverter Rotary Compressor – 4 HP / 45,000 BTU, R410A

Panasonic 5VD420ZAA21 is a DC inverter rotary compressor operating with R410A refrigerant. With a displacement of 42.4 cm³/rev, it delivers a cooling capacity of 13,200 W (≈45,000 BTU/h) under ARI conditions; it is in the 4 HP class. It is used in heating-cooling inverter air conditioner outdoor units, heat pumps and commercial air conditioning units.

42.4 cm³ Twin Rotary: 900-3,600 rpm Modulation

• Wide speed range: Operates between 900-3,600 rpm — modulating its capacity at a ratio of 1 to 4. At part load it runs at low speed and eliminates on-off cycling.
• 13,200 W cooling / 4,220 W input → COP 3.13 (ARI: Te 7.2 / Tc 54.4 °C, 3,450 rpm).
• Sensorless brushless inverter: Runs with sine-wave drive without a position sensor; drive DC bus voltage 280 V.
• High condensing capability: Under maximum load conditions it can operate at condensing up to 65 °C and evaporating up to 13 °C — comfortable in hot climates and heat pump applications.
• Certified: CCC and TÜV approved.

Technical Specifications and Installation Notes

• Model: Panasonic 5VD420ZAA21  |  Supply Code: 10.183.0062  |  Series: V (rotary)
• Type: Hermetic rotary, DC inverter (sensorless brushless)  |  Refrigerant: R410A
• Power Class: 4 HP  |  Capacity: 13,200 W / ≈45,000 BTU/h (ARI)
• Power Input: 4,220 W  |  COP: 3.13  |  Displacement: 42.4 cm³/rev
• Speed Range: 900-3,600 rpm (rated 3,450 rpm)  |  Drive DC Voltage: 280 V
• Oil: FV50S (or equivalent), 1,300 cm³ factory charge  |  Net Weight: 21.1 kg
• Connection: Suction inside diameter 15.9 mm  |  Discharge inside diameter 9.65 mm (outside diameter 12.7 mm)
• Body Dimensions: Body diameter Ø142.6 mm  |  Body height 352 mm  |  Accumulator height 384 mm  |  Accumulator Ø75 mm, 119 mm from the body center
• Mounting: 3 feet, 3 × Ø19.1 mm holes, hole center radius R88 mm (Ø176), 120° spacing — dimensioned technical drawing in the 2nd image
• Max. Refrigerant Charge: 1,800 g  |  Approvals: CCC, TÜV

• 🔧 It is an inverter compressor and is not connected directly to the mains. It cannot run without the drive board; when replacing, verify that the drive is also in good condition.
• The system refrigerant charge must not exceed 1,800 g — this is the manufacturer's limit; overcharging leads to liquid return and compressor damage.
• The oil type is FV50S (FV68S is used in other models of this family) — do not mix oil types when topping up.
• Upright mounting is required: Rotary compressors must not be run tilted; fix it upright with vibration mounts.
• R410A is a high-pressure refrigerant: Charge in the liquid phase and apply a deep vacuum; open the plugs just before installation.