IV–90P13 Refrigerant circuit Error (W MULTI) *Please note that 3WAY models use a differenttroubleshooting procedure.c Error detection method• The indoor unit outputs this warning when it determines that a compressor inspection is required.• The system stops and there is no automatic reset when this warning is output.When there is no difference between compressor outlet and inlet pressure (≤0.2 MPa *) 3 minutes after theengine was turned on, the engine stops and an error flag is set. An Cooling Circuit Fault is assumed when theerror flag has stopped the engine 5 consecutive times in 1 hour.* This indicates that the difference in initial pressure and after 3 minutes is 0.2 Mpa or less.d Troubleshooting1Inspect thecompressor.1-1 Turn off the outdoor unit (be sure to do this before work)1-2 Use the instructions in A25 Clutch Trouble to adjust thecompressor lock. Does it lock? (Adjust both clutch 1 and 2.)Yes 2-1No 1-31-3 Use the instructions in P26 Clutch Connection Fault, to adjustoperation and wiring of clutch 1 and 2. Any problems?Yes See section on page 26.No Keep under observation2 Replacecompressor 2-1Replace a compressor that is locked.Measure the amount of chiller oil in the compressor when itis removed. Fill the new compressor with an equal amount ofchiller oil (new oil) before attaching it to the outdoor unit.Yes 3-13Clean thecoolingtubes.(Cleaningusing liquidnormallyhandled bya device)3-1 Use our “Replacement material” as a guide to cleaning thesystem using liquids that are normally present in the system. No Process completed
