Choice A Air Conditioner 3-Wire/5-Wire DC Fan Motor Tester – Short-Circuit Protection, Speed Adjustment For

Professional HVAC Motor Tester for Quick Fault Diagnosis
This universal D.C fan motor tester simplifies troubleshooting for HVAC technicians and DIY enthusiasts. Designed for 3-wire and 5-wire D.C motors, it detects issues like motor failure, speed inconsistency, or abnormal feed back signals. The digital display instantly reveals RPM frequency, while the 310V short-circuit protection safeguards both the tester and motor during testing.
Hassle-Free Testing with Intuitive Design
Color-Coded Ports: Match wires effortlessly:
Red → 310V | Black → GND | Yellow → VSP (speed control)
Blue → FG (speed feed back) | White → 15V (VCC)
3-Wire/5-Wire Switch: Toggle modes for compatibility with all standard D.C motors.
Adjustable Speed Knob: Simulate real-world operating conditions by gradually increasing motor speed.
Built to Protect
Sturdy Housing:Good casing resists accidental drops or impacts.
Short-Circuit Protection: Automatically cuts off power if 310V overload is detected.
How to Use:
Connect Wires: Match motor wires to the testers labeled ports (check motor nameplate for correct functions).
Select Mode: Press/pull the 3-wire/5-wire switch based on your motor type.
Test & Diagnose: Slowly turn the speed knob. If the motor accelerates smoothly and the screen displays rising RPM frequency → motor is healthy. If no rotation, unstable speed, or abnormal frequency → motor fault detected.
WARNING:
Always double-check wire functions before connecting to avoid burnout.
Do not connect NC (empty) ports.

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