P8 🟡 Repair Required

Mitsubishi Error Code P8: Pipe Temp Error

⚠️ Your Mitsubishi HVAC system has detected an issue with the pipe temperature, which may cause system damage if not addressed.

How to Fix Mitsubishi Code P8

  1. Step 1: Turn off your HVAC system at the thermostat and the circuit breaker to prevent further system damage.
  2. Step 2: Check the air filter and replace it if it's dirty. A clogged filter can cause airflow issues and overheating.
  3. Step 3: Call a professional HVAC technician to diagnose and repair the issue. Do not attempt to open the unit or handle refrigerant lines yourself.
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What Does Mitsubishi Error Code P8 Mean?

The P8 error on your Mitsubishi HVAC system indicates that the pipe temperature has exceeded the safe operating range. This could be due to a faulty temperature sensor or a problem with the system's refrigerant flow. If left unchecked, this issue can lead to system damage and reduced efficiency.

Common Causes of Mitsubishi Code P8

  • Faulty pipe temperature sensor
  • Blockage in refrigerant lines
  • Defective expansion valve
  • Insufficient refrigerant levels

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 P8

Pipe Temperature Sensor OEM: 55674-00000
Expansion Valve OEM: 55673-00000