PM Checklist for Mitsubishi Multi-Citi

  • Check data log
  • Inspect and clean air filters of all fan coils (each visit)
  • Tighten all wire connections (each visit)
  • Oil bearings as needed.
  • Check belts and adjust tension (as needed).
  • Check all safety protection (twice a year).
  • Check General Proper functioning of the indoor unit (each visit)
  • Check General Proper functioning of the outdoor units (each visit)
  • Check thermostat operation (manual mode if available; twice a year).
  • Check unit input voltage (actual voltage versus name plate voltage; each visit).
  • Check compressor input current (actual amp versus nameplate amp; each visit).
  • Check fan motor input current (actual amp versus nameplate amp; each visit).
  • Check fan input current (actual amp versus nameplate amp; each visit).
  • Check drain line (twice a year or as needed).
  • Check refrigerant (as needed).
  • Check differential temperature (each visit).
  • Flush condenser coil with water (once a year or as needed).
  • Light cooling coil cleaning (once a year or as needed)