U2 🟡 Repair Required

Mitsubishi Error Code U2: Low Voltage/Overcurrent

⚠️ Your Mitsubishi HVAC system has detected a low voltage or overcurrent issue, which could damage components. Shut down the system and call a professional for repair.

How to Fix Mitsubishi Code U2

  1. Step 1: Turn off the system at the thermostat and the circuit breaker.
  2. Step 2: Do not attempt to open the unit or touch any electrical components.
  3. Step 3: Call a professional HVAC technician for repair.
Type: led blink count Display: indoor unit led

What Does Mitsubishi Error Code U2 Mean?

The U2 error code on your Mitsubishi HVAC system indicates a low voltage or overcurrent issue. This could be due to a faulty component drawing too much power or a wiring problem. The system has entered a protective mode to prevent further damage. It's important to address this issue promptly to avoid potential damage to your system.

Common Causes of Mitsubishi Code U2

  • Faulty compressor or fan motor
  • Wiring issue or short circuit
  • Overloaded circuit
  • Faulty control board

Applicable Mitsubishi Models

City Multi (VRF)⚡City Multi (Y)⚡Diamond (PJ)⚡Diamond Plus⚡Diamond Series⚡Ducted Systems⚡M-Series⚡MSZ⚡MSZ Series⚡MSZ-AP⚡MSZ-AP Series⚡MSZ-AP5 Series⚡MSZ-AS⚡MSZ-FD⚡MSZ-FE⚡MSZ-FS⚡MSZ-FS/FD Series⚡MSZ-FT⚡MSZ-FY⚡MSZ-GE⚡MSZ-LV⚡MUZ-FE Series⚡P-Series⚡PUMA⚡PUMY⚡Puff (P-Series)⚡
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Replacement Parts for Mitsubishi Mini-Split Code U2

Compressor OEM: 530-00001-000
Control Board OEM: 530-00002-000
Wiring Harness