ESIE16-02B | Part 2. Troubleshooting 2.2. Error based troubleshootingPage 24 4/04/17 | Version 1.1RA R32 Split & multi split M-SeriesMore info:2.2.1.8. “UH-00” – Anti-icing function in other room(s)Possible cause Check Corrective actionFaulty suction air thermistor. Check suction air thermistor. Replace suction air thermistor whenrequired.Faulty indoor PCB. Check if error still occurs after turning offpower and turning it back on again.Check if the indoor PCB receives power.Check if the HAP LED is blinking in regu-lar intervals.Check if the correct spare part is installed.Check the wiring to indoor PCB.Adjust power to the indoor PCB.Replace indoor PCB when HAP LED isnot blinking in regular intervals.Install correct spare part or update indoorPCB.Adjust wiring to indoor PCB whenrequired.Check procedures Replacing procedures"Refrigerant thermistors" on page 56Trigger Effect ResetA wrong connection is detected by check-ing the combination of the indoor and out-door unit on the CPUOperation halt due to freeze up preventionin other room/unspecified internal orexterna voltages/mismatch indoor andoutdoor unitsAuto reset after freeze up prevention isfinished. Unit cannot restart before mis-match is removed.Possible cause Check Corrective actionFreeze up prevention in other room. Indoor fan is not operating while the erroris displayed.See error A5.Mismatch of outdoor-indoor units. Verify connection on combination data-base.Replace indoor units when required.Unspecified voltages. Check supply voltage. Adjust when required.
