Panasonic Mini ECO-i Service Manual

SERVICE MANUAL85464849297000 SM830197-00REFERENCE NO.Outdoor UnitsModel No.Refrigerant R410A is used in the outdoor units.5236ClassModel NameU-36LE1U6

Mini VRF SYSTEMControl Functions1 - 4123546Example:2-3-1. Roadmap control in cooling modeWith this control, the below evaporation temperature control

Mini VRF SYSTEMControl Functions1 - 5123546Horsepower (hp) limits+2 hp down+1 hp down+0.5 hp downHp increase prohibitedHp increase permitted (slowly)N

Mini VRF SYSTEMControl Functions1 - 6123546(2)(1)(2)Current protectionInverter compressor current control is composed of primary current control and s

Mini VRF SYSTEMControl Functions1 - 7123546• • • (1)In addition to ordinary heating and cooling operation, this system also includes the following 4 t

Mini VRF SYSTEMControl Functions1 - 8123546• • (1)3-2. Reverse Cycle Start ControlReverse cycle start control is performed under the following conditi

Mini VRF SYSTEMControl Functions1 - 9123546(a)(b)* (1)3-4-3. Frost detectionFrost is not detected at the outdoor unit heat exchanger for 5 minutes aft

Mini VRF SYSTEMControl Functions1 - 10123546(1)•• (2)•4. Other Control4-1. Indoor Unit Self-Separator Oil Recovery ControlRefer to the indoor unit spe

Mini VRF SYSTEMControl Functions1 - 11123546(1)(a) * (b) (2)(a) (b) (c) • After the fixed initial fan mode, the fan mode is increased or decreased acc

Mini VRF SYSTEMControl Functions1 - 12123546(1)* (2)Thermostat OFFThermostat ON20 pulses20 pulses20 pulsesCooling—Outdoor unit stoppedFanStopOutdoor u

Mini VRF SYSTEMControl Functions1 - 13123546(1)(2)* (1)(2)8-2. During Special Control9. Indoor Special Control9-1. Indoor Unit Thermostat ON/OFF Delay

iiIMPORTANT! Please Read Before StartingThis air conditioning system meets strict safety and oper-ating standards. As the installer or service person,

Mini VRF SYSTEMControl Functions1 - 14123546••*10-1. Discharge Gas Temperature ProtectionAlarmThe compressor upper-limit discharge temperature is 222°

Mini VRF SYSTEMControl Functions1 - 15123546• • • 11-2. Inverter Compressor11-3. CT Circuit Detection Failure12. Pressure Sensor FailureThis system in

Mini VRF SYSTEMControl Functions1 - 16123546(1)(2)The below functions are available, and are selected by the outdoor unit EEPROM settings.14-1. Outdoo

Mini VRF SYSTEMOutdoor Unit Repair Procedures2 - 11235462. OUTDOOR UNIT REPAIR PROCEDURESLayout Diagram: Sensors and Solenoid Valves . . . . . . . .

Mini VRF SYSTEMOutdoor Unit Repair Procedures2 - 2123546Layout Diagram: Sensors and Solenoid ValvesTS(suction thermistor)MOV(electronic motor-operated

Mini VRF SYSTEMOutdoor Unit Repair Procedures2 - 3123546Layout Diagram: SensorsTS(suction thermistor)C1(condenser 1 thermistor)SM830197-00_MINI VRF SY

Mini VRF SYSTEMOutdoor Unit Repair Procedures2 - 4123546Front panelCover A• Remove the front panel (remove 3 screws).(1) Front panel removal (Fig. 2-1

Mini VRF SYSTEMOutdoor Unit Repair Procedures2 - 5123546Condition ofrefrigeration cycleRecover the refrigerant in the outdoor unit following the proce

Mini VRF SYSTEMOutdoor Unit Repair Procedures2 - 6123546The following equipment and tools are required:Jumper wire with clips, adjustable wrench, set

Mini VRF SYSTEMOutdoor Unit Repair Procedures2 - 71235463-2. Refrigerant Recovery Procedures (Indoor Unit)The flowchart below shows the refrigerant re

iiiiCheck of Density LimitThe room in which the air conditioner is to beinstalled requires a design that in the event of refrig-erant gas leaking out,

Mini VRF SYSTEMOutdoor Unit Repair Procedures2 - 8123546(1) (2) (3) (4) (5) (1) (2)(3) (4) (5) (6) 3-2-1. Cooling operation (for all units)Short-circu

Mini VRF SYSTEMOutdoor Unit Repair Procedures2 - 9123546Refrigerantrecovery unitManifoldgaugeLo HiRefrigerantrecovery cylinderBall valve(separately pu

Mini VRF SYSTEMOutdoor Unit Repair Procedures2 - 10123546(1)(2)(3)(4)(5)(6)(7)(8)3-2-3. Refrigerant recovery procedures (B): for indoor unit with no b

Mini VRF SYSTEMOutdoor Unit Repair Procedures2 - 11123546(1)(2)(3)(4)* 4-1. Pressure Check for Leakage of Outdoor UnitAfter completing repair of the o

Mini VRF SYSTEMOutdoor Unit Repair Procedures2 - 12123546(1)(2)(3)(4)(5)(6)This procedure is carried out to ensure there is no remaining refrigerant o

Mini VRF SYSTEMOutdoor Unit Repair Procedures2 - 131235466-1. If Refrigerant Has Already Been Charged to Outdoor UnitBe sure to use an exclusive oil-c

Mini VRF SYSTEMOutdoor Unit Repair Procedures2 - 14123546Fig. 2-10ManifoldgaugeLo HiUpper side valveLower side valveClose to stopOilVacuum pumpOpen to

Mini VRF SYSTEMOutdoor Unit Repair Procedures2 - 15123546Next, start Cooling mode operation of the outdoor unit to be oil-charged. When cooling operat

Mini VRF SYSTEMOutdoor Unit Repair Procedures2 - 16123546(1)(2)(3) When the unit has been charged with thedesignated amount of oil, stop the vacuum pu

Mini VRF SYSTEMOutdoor Unit Repair Procedures2 - 17123546(1)(2)(3)(4)(5)(6)(7)(8)(9)(10)Required equipment and tools: Jumper wire with clips, adjustab

iiiNewtool?1-2. Prevent impurities including water, dust and oxide from entering the tubing. Impurities can cause R410Arefrigerant deterioration and c

Mini VRF SYSTEMOutdoor Unit Repair Procedures2 - 18123546To determine the completion of refrigerant recovery, follow the instructions that came with t

Mini VRF SYSTEMOutdoor Unit Repair Procedures2 - 19123546(1)(2)(a) Motor(b) Compressor(c) Unit(1)(2)(3)(4)(5)(6)(7)8-1. Compressor Trouble Diagnosis a

Mini VRF SYSTEMOutdoor Unit Repair Procedures2 - 20123546(8)The connecting port includes a Schrader-type, push-to-release valve. When disconnecting th

Mini VRF SYSTEMOutdoor Unit Repair Procedures2 - 21123546(18)(19)(20)(21)(1)(2)(3)(4)(5)(6)(7)(8)(9)Remove dry cores. Connect the tube that runsfrom t

Mini VRF SYSTEMOutdoor Unit Repair Procedures2 - 22123546(1)(2)(3)(1)9. High Pressure SensorThe high pressure sensor connection port on the outdoor un

Mini VRF SYSTEMOutdoor Unit Maintenance Remote Controller3 - 11235463. OUTDOOR UNIT MAINTENANCE REMOTE CONTROLLER1. Overview . . . . . . . . . . . . .

Mini VRF SYSTEMOutdoor Unit Maintenance Remote Controller3 - 2123546OUTDOOR UNIT MAINTENANCE REMOTE CONTROLLER (CZ-RTC2) for MINI VRF About the outd

Mini VRF SYSTEMOutdoor Unit Maintenance Remote Controller3 - 3123546 Functions on the ordinary display(1) Functions: Button operations can be used t

Mini VRF SYSTEMOutdoor Unit Maintenance Remote Controller3 - 4123546 Functions on the ordinary display• Connect the special service checker wir

Mini VRF SYSTEMOutdoor Unit Maintenance Remote Controller3 - 5123546Fig. 3-1● All units start/stop (Fig. 3-1)<Operation> The (ON/OFF operatio

ivValveLiquid3-2.Use R410A exclusive cylinder only.Single-outlet valve(with siphon tube)Liquid refrigerant should be rechargedwith the cylinder standi

Mini VRF SYSTEMOutdoor Unit Maintenance Remote Controller3 - 6123546 Display (functions)• Use the temperature setting and buttons to change

Mini VRF SYSTEMOutdoor Unit Maintenance Remote Controller3 - 7123546 XX-YY R.C. (Fig. 3-4)Displays the outdoor unit sub-bus address which is curren

Mini VRF SYSTEMOutdoor Unit Maintenance Remote Controller3 - 8123546 Concerning the 7-segment, 4-digit display remote controller timer display The

Mini VRF SYSTEMOutdoor Unit Maintenance Remote Controller3 - 9123546Display the indoor unit and outdoor unit sensor temperatures.<Operating procedu

Mini VRF SYSTEMOutdoor Unit Maintenance Remote Controller3 - 10123546 Display of unit No. 1DN Description RemarksIntake temp. °FE1 °FE2 °FE3 °F In

Mini VRF SYSTEMOutdoor Unit Maintenance Remote Controller3 - 11123546• Displays outdoor unit alarms only.• Check the indoor unit alarm histories sep

Mini VRF SYSTEMOutdoor Unit Maintenance Remote Controller3 - 12123546 Setting mode 1<Operating procedure>➀ Press and hold the (CHECK) butto

Mini VRF SYSTEMOutdoor Unit Maintenance Remote Controller3 - 13123546 Setting mode 2<Operating procedure>➀ Press and hold the (CHECK) butto

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Mini VRF SYSTEMRemote Controller Functions4 - 11235464. REMOTE CONTROLLER FUNCTIONS1. Simple Settings Function . . . . . . . . . . . . . . . . . . . .

CONTENTSSection 1: CONTROL FUNCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11. Introduction . . . .

Mini VRF SYSTEMRemote Controller Functions4 - 2123546This allows the filter lifetime, operating mode priority change, central control address, and oth

Mini VRF SYSTEMRemote Controller Functions4 - 3123546List of Simple Setting ItemsItem code ItemSetting dataNo. DescriptionFilter sign ON time (fi tlter

Mini VRF SYSTEMRemote Controller Functions4 - 4123546This allows the system address, indoor unit address, and other settings to be made for the indivi

Mini VRF SYSTEMRemote Controller Functions4 - 51235462. Detailed Settings FunctionList of Detailed Setting Items Item code Item No. No.No.Setting dat

Mini VRF SYSTEMRemote Controller Functions4 - 6123546Item code ItemSetting dataNo. Description(1B) Forced thermostat ON time0000 5 minutes0001 4 minut

Mini VRF SYSTEMRemote Controller Functions4 - 7123546Item code ItemSetting dataNo. DescriptionAutomatic drain pump operation0000 No forced operation00

Mini VRF SYSTEMRemote Controller Functions4 - 8123546Item code ItemSetting dataNo. DescriptionFan tap setting (Fan tap change in order to prevent drop

Mini VRF SYSTEMRemote Controller Functions4 - 9123546Simple setting itemsItem code Item Description01Filter sign ON time setting (fi lter lifetime)Chan

Mini VRF SYSTEMRemote Controller Functions4 - 10123546Item code Item Description03 Central control addressSet when using a central control device.Used

Mini VRF SYSTEMRemote Controller Functions4 - 11123546When the operating mode at the priority remote controller is changed, the operating modes of oth

Mini VRF SYSTEMControl Functions1 - 11235461. CONTROL FUNCTIONS1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Mini VRF SYSTEMRemote Controller Functions4 - 12123546Item code Item Description10 Unit typeSet when the indoor unit EEPROM memory is replaced during

Mini VRF SYSTEMRemote Controller Functions4 - 13123546Item code Item Description1F (Upper limit)20 (Lower limit)Change to the remote control temperatu

Mini VRF SYSTEMRemote Controller Functions4 - 14123546(Continued from previous page)Item code Item Description3CHeat exchanger temperature for cold ai

Mini VRF SYSTEMRemote Controller Functions4 - 15123546The remote controller includes a number of servicing functions. Use these as needed for test run

Mini VRF SYSTEMRemote Controller Functions4 - 16123546Test Run FunctionOperates the unit with the thermostat forced ON.<Procedure>➀ Press and h

Mini VRF SYSTEMRemote Controller Functions4 - 17123546 Sensor Temperature Display Function (displayed regardless of whether unit is operating or sto

Mini VRF SYSTEMRemote Controller Functions4 - 18123546Indoor unit sensors02 Intake temp.03 E104 E205 E306 Discharge temp.07 Discharge temp. setting08P

Mini VRF SYSTEMTrouble Diagnosis5 - 11235465. TROUBLE DIAGNOSIS1. Contents of Remote Controller Switch Alarm Display . . . . . . . . . . . . . . . .

Mini VRF SYSTEMTrouble Diagnosis5 - 21235461. Contents of Remote Controller Switch Alarm DisplayRemote controller is detecting error signal from indoo

Mini VRF SYSTEMTrouble Diagnosis5 - 31235461. Contents of Remote Controller Switch Alarm DisplayP14ON:Blinking: OFF:Possible cause of malfunctionActiv

Mini VRF SYSTEMControl Functions1 - 2123546* OUTDOOR UNITMini VRF is a multi system that is connected to a single outdoor unit. The outdoor unit conta

Mini VRF SYSTEMTrouble Diagnosis5 - 41235462. Outdoor Unit Control Panel LED DisplayLEDD042(1) D043(2)(Both ON)(OFF) (ON)(Both OFF)( : ON

Mini VRF SYSTEMTrouble Diagnosis5 - 51235463. Remote Controller Servicing Functions(1) d(2)(3)(4)(5)Use the following check procedure to display the s

Mini VRF SYSTEMTrouble Diagnosis5 - 61235464. Mini VRF Alarm CodesAlarm Code77888101010111212Alarms for outdoor unitsAlarm Meaning PageE06E12E15E16E20

Mini VRF SYSTEMTrouble Diagnosis5 - 71235464. Mini VRF Alarm CodesE06 alarmAlarm codeE06Alarm meaningOutdoor unit failed to receive serial communicati

Mini VRF SYSTEMTrouble Diagnosis5 - 81235464. Mini VRF Alarm CodesE16 alarmAlarm codeE16Alarm meaningAutomatic address setting alarm (too many units)A

Mini VRF SYSTEMTrouble Diagnosis5 - 91235464. Mini VRF Alarm CodesF04 alarmAlarm code F04 • Check •Alarm meaning Compressor 1 discharge temperature se

Mini VRF SYSTEMTrouble Diagnosis5 - 101235464. Mini VRF Alarm CodesF07 alarmAlarm code F07———Alarm code———————Alarm meaningAlarm conditionsProbable ca

Mini VRF SYSTEMTrouble Diagnosis5 - 111235464. Mini VRF Alarm CodesF16 alarmAlarm code F16CorrectionExample This alarm may result when the service val

Mini VRF SYSTEMTrouble Diagnosis5 - 121235464. Mini VRF Alarm CodesH03 alarmAlarm code H03Alarm meaningAlarm conditionsProbable causeCheckCorrectionEx

Mini VRF SYSTEMTrouble Diagnosis5 - 131235464. Mini VRF Alarm CodesCorrection If an HIC failure is found, replace the PCB.ExampleNotes Turn OFF the po

Mini VRF SYSTEMControl Functions1 - 3123546(1)* (2)(3)(4)* 2-1. Compressors Mounted on Outdoor Units2-2. Compressor Stop Rules2-3. Roadmap ControlAfte

Mini VRF SYSTEMTrouble Diagnosis5 - 141235464. Mini VRF Alarm CodesL05 alarmAlarm codeExampleL10 alarmAlarm code L10CorrectionExample———Alarm meaningA

Mini VRF SYSTEMTrouble Diagnosis5 - 151235464. Mini VRF Alarm Codes——Alarm code P03 L18 alarmAlarm meaningAlarm code L184-way valve operation failureD

Mini VRF SYSTEMTrouble Diagnosis5 - 161235464. Mini VRF Alarm CodesP16 alarmAlarm code P16Alarm meaning Inverter compressor overcurrent alarmAlarm con

Mini VRF SYSTEMTrouble Diagnosis5 - 171235464. Mini VRF Alarm CodesP29 alarmAlarm code P29—Alarm meaning Inverter compressor missing phase or lock ala

Mini VRF SYSTEMTrouble Diagnosis5 - 181235465. Inspection of Parts (Outdoor Unit)(1)(2)(1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)Electronic control valve

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