Daikin SA R32 Sky-Air RZAG-L Service Manual

Also see for FCAHG100FVEB: Installation and operation manual Technical data Installer and user reference guide

Contents

Daikin SA R32 Sky-Air RZAG-L Service Manual Manual pdf 40 page image

ESIE16-03B | Part 2. Troubleshooting 2.2. Error based troubleshootingPage 40 22/08/16 | Version 1.1SA R32 Sky-Air RZAG-L2.2.3. System2.2.3.1. “U0-00” – Refrigerant shortage2.2.3.2. “U1-00” – Reverse phase or open phaseTrigger Effect ResetRefrigerant shortage detected. Unit will stop operating. Automatic reset (see "Error codes" onpage 121).Power reset via outdoor unit.Possible cause Check Corrective actionFaulty air thermistor. Check air thermistor (see "Refrigerantthermistors" on page 57).Replace air thermistor when required.Faulty discharge thermistor. Check discharge thermistor (see "Refrig-erant thermistors" on page 57).Replace discharge thermistor whenrequired.Faulty outdoor heat exchanger thermistor. Check outdoor heat exchanger thermistor(see "Refrigerant thermistors" onpage 57).Replace outdoor heat exchanger thermis-tor when required.Stop valve is closed. Check stop valve. Open stop valve when required.Refrigerant shortage. Check for refrigerant shortage. Refer tothe nameplate for the correct charge.Charge the correct refrigerant amountwhen required.Humidity in refrigerant (ice formation inexpansion valve).Check for humidity in the refrigerant. In case of suspicion of humidity, recover,vacuum and recharge with virgin refriger-ant.Non condensables in refrigerant. Check for non condensables in refriger-ant.In case of suspicion of non condensables,recover, vacuum and recharge with virginrefrigerant.Faulty compressor. Check compressor (see "Compressor" onpage 49).Check connections and wiring of the com-pressor.Check expansion valve (liquid back issue)(see "Electronic expansion valve" onpage 50).Check the refrigerant charge. Refer to thenameplate for the correct charge.Replace compressor when required (see"Replacing compressor" on page 76).Investigate reason of breakdown.Replace expansion valve when required(see "Replacing expansion valve body" onpage 81).Fix possible leak.Faulty expansion valve. Check the expansion valve (see "Elec-tronic expansion valve" on page 50).Replace the expansion valve body (see"Replacing expansion valve body" onpage 81) or motor (see "Replacing expan-sion valve motor" on page 82) whenrequired.Trigger Effect ResetOutdoor main PCB detects incorrectpower supply.Unit will stop operating. Manual reset via user interface.Automatic reset.Possible cause Check Corrective actionFaulty outdoor unit main PCB. Check if the HAP LED is blinking in regu-lar intervals.Check if the correct spare part is installed.Check if the outdoor main PCB receivespower.Adjust the power to the outdoor mainPCB.Replace outdoor main PCB when HAPLED is not blinking in regular intervals(see "Replacing main PCB" on page 89).