Daikin SkyAir RZR-P Series Service Manual Download Page 148

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Troubleshooting by Remote Controller

SiUS281117

Service Diagnosis

141

2.28 Discharge Pipe Temperature Control Error

Remote
Controller
Display

Applicable
Models

RZR, RZQ

Method of Error
Detection

Abnormality is detected according to the temperature detected by the discharge pipe thermistor.

Error Decision
Conditions

When the discharge pipe temperature rises to an abnormally high level
When the discharge pipe temperature rises suddenly
When the discharge pipe temperature does not rise after operation start

Supposed
Causes



Refrigerant shortage



Defective compressor



Defective discharge pipe thermistor



Defective connection of discharge pipe thermistor



Disconnection of discharge pipe thermistor



Defective outdoor unit PCB

Summary of Contents for SkyAir RZR-P Series

Page 1: ...Service Manual RZR P RZQ P 9 Series Cooling Only Heat Pump R 410A 60Hz SiUS281117...

Page 2: ...Power Supply 2 1 1 Cooling Only 2 1 2 Heat Pump 2 2 External Appearance 3 2 1 Indoor Units 3 2 2 Remote Controller 4 2 3 Outdoor Units 4 Part 2 Refrigerant Circuit 5 1 Refrigerant Circuit 6 1 1 RZR18...

Page 3: ...32 1 1 Operation Mode 32 2 Basic Control 33 2 1 Normal Operation 33 2 2 Compressor PI Control 34 2 3 Electronic Expansion Valve PI Control 35 2 4 Cooling Operation Fan Control 36 3 Special Control 37...

Page 4: ...e 1 83 3 5 Setting Mode 2 84 3 6 Monitor Mode 86 3 7 Detailed Explanation of Setting Modes 87 Part 6 Service Diagnosis 94 1 Symptom based Troubleshooting 96 2 Troubleshooting by Remote Controller 99 2...

Page 5: ...or Abnormality 149 2 35 Outdoor Unit PCB Abnormality 151 2 36 Radiation Fin Temperature Rise 153 2 37 Momentary Overcurrent of Inverter Compressor 154 2 38 Electronic Thermal Time Lag 155 2 39 Inverte...

Page 6: ...ned specifically for R410A refrigerant systems Never use tools or materials designed for R22 refrigerant systems on an R410A refrigerant system Doing so can cause a serious accident or an equipment fa...

Page 7: ...le and wires may cause an electrical shock or fire Do not use a joined power cable or an extension cord or share the same power outlet with other electrical appliances as it may cause an electrical sh...

Page 8: ...117 General Information 1 Part 1 General Information 1 Model Names and Power Supply 2 1 1 Cooling Only 2 1 2 Heat Pump 2 2 External Appearance 3 2 1 Indoor Units 3 2 2 Remote Controller 4 2 3 Outdoor...

Page 9: ...nt Circuit 5 Part 2 Refrigerant Circuit 1 Refrigerant Circuit 6 1 1 RZR18 24 30PVJU RZQ18 24PVJU9 RZQ30PVJU 6 1 2 RZR36 42PVJU RZQ36 42PVJU 9 8 2 Functional Parts Layout 10 2 1 RZR18 24 30PVJU RZQ18 2...

Page 10: ...24PVJU RZR24PVJU FHQ30PVJU RZR30PVJU FHQ36MVJU RZR36PVJU FHQ42MVJU RZR42PVJU Wall mounted type FAQ18PVJU RZR18PVJU FAQ24PVJU RZR24PVJU Ceiling mounted duct type FBQ18PVJU RZR18PVJU FBQ24PVJU RZR24PVJU...

Page 11: ...Cassette Type Round Flow FCQ18PAVJU FCQ24PAVJU FCQ30PAVJU FCQ36PAVJU FCQ42PAVJU Ceiling Suspended Type FHQ18PVJU FHQ24PVJU FHQ30PVJU FHQ36MVJU FHQ42MVJU Wall Mounted Type FAQ18PVJU FAQ24PVJU Ceiling...

Page 12: ...Appearance 4 General Information 2 2 Remote Controller 2 3 Outdoor Units RZR18PVJU RZR24PVJU RZR30PVJU RZQ18PVJU9 RZQ24PVJU9 RZQ30PVJU RZR36PVJU RZR42PVJU RZQ36PVJU9 RZQ42PVJU9 Wired Type BRC1D71 BRC...

Page 13: ...ivated at high pressure of 580 psi or more to stop the compressor operation S Fusible plug In order to prevent the increase of pressure when abnormal heating is caused by fire or others the fusible pa...

Page 14: ...oid valve Capillary tube Four way valve Check valve High pressure sensor High pressure switch Low pressure sensor Compressor accumulator Pressure regulating valve Outdoor unit heat exchanger Service p...

Page 15: ...op the compressor operation S Fusible plug In order to prevent the increase of pressure when abnormal heating is caused by fire or others the fusible part of the plug is molten at a temperature of 158...

Page 16: ...heat exchanger Pressure regulating valve High pressure sensor Filter Solenoid Capillary High pressure Compressor Solenoid Accumulator Stop valve With service port on field piping side 5 16 flare conne...

Page 17: ...1 RZR18 24 30PVJU RZQ18 24PVJU9 RZQ30PVJU 1P241839F LEAD WIRE HIGH VOLTAGE Y1S LEAD WIRE HIGH VOLTAGE Y2S LEAD WIRE LOW VOLTAGE R2T LEAD WIRE HIGH VOLTAGE Y3S LEAD WIRE LOW VOLTAGE THERMAL INSULATION...

Page 18: ...2 Names and Functions 13 1 3 MAIN SUB Setting when Using 2 Remote Controllers 17 1 4 Centralized Control Group No Setting 19 2 Wireless Remote Controller 22 2 1 Applicable Models 22 2 2 Names and Func...

Page 19: ...te Controller 12 Remote Controller 1 Wired Remote Controller 1 1 Applicable Models Model Series FCQ PA FHQ P FAQ P FBQ P FTQ Wired Remote Controller with Weekly Schedule Timer BRC1D71 Navigation Remot...

Page 20: ...e away icon shows the status of the away function ON BLINKING OFF AWAY is enabled AWAY is active AWAY is disabled MONTUEWEDTHUFRISATSUN 8 EXTERNAL CONTROL ICON This icon indicates that another control...

Page 21: ...EANING TIME ICON RESET BUTTON This button is used to reset the air filter cleaning time icon 15 ACTION ICONS 1 2 3 4 5 These icons indicate the actions for each day of the schedule timer 16 OFF ICON T...

Page 22: ...t model 2 Fan speed control button Press this button to select the fan speed of your preference Available fan speeds vary with the indoor unit model 3 Menu OK button Used to indicate the main menu Use...

Page 23: ...f button Press this button and system will start Press this button again to stop the system 9 Operation lamp Green This lamp illuminates solid during normal operation This lamp blinks if an error occu...

Page 24: ...so you only have to change one remote controller from MAIN to SUB To change a remote controller from MAIN to SUB proceed as follows 1 3 1 BRC1D71 Step Action 1 Insert a flat head screwdriver into the...

Page 25: ...ower OFF and then ON again Select Switch Main Sub Controller and press Menu OK button Service settings menu is displayed Item 2 is displayed Basic screen is displayed Press and hold Cancel button for...

Page 26: ...ds or more to set the system to Field Setting Mode 2 Select the MODE No 00 with the button 3 Use the button to select the group No for each group Group numbers increase in the order of 1 00 1 01 1 15...

Page 27: ...ure to keep the installation table with the operation manual for maintenance Service settings menu Item 2 Description This menu is used to make group address setting for centralized control It is also...

Page 28: ...Press Cancel button once Select the desired Group Address using the Up Down buttons and then press Menu OK button Service settings menu is displayed Item 2 is displayed Item 2 is displayed Item 2 is...

Page 29: ...Models 2 2 Names and Functions 3P107422 11J Receiver Model Series FCQ PA FHQ P FAQ P FBQ P Remote controller BRC7E83 BRC7EA818 BRC4C82 1 1 1 2 8 10 13 11 12 15 14 16 17 9 1 3 4 6 2 5 7 FHQ 3P107422 8S...

Page 30: ...the display shows the system mode is in ON OFF BUTTON Press the button and the system will start Press the button again and the system will stop FAN SPEED CONTROL BUTTON Press this button to select t...

Page 31: ...te Controller The address for the wireless remote controller is factory setting to 1 To change this setting proceed as follows 1 Hold down the button and the button for at least 4 seconds to get the F...

Page 32: ...ta No with or button 6 Each data displays Refer to the table below display 7 Return to the normal operation mode Press the INSPECTION TEST operation button once Mode No Function Content and Operation...

Page 33: ...e mode ON OFF button 5 Carry out the necessary settings for each mode Mode 43 only possible for wireless remote controller In case of Mode 43 Press timer ON OFF button to decide the forced Fan ON In c...

Page 34: ...n speed and airflow direction for each unit individually when using group control Settings are made using the airflow direction adjust and fan speed adjust buttons 45 Unit No Change Changes unit No Se...

Page 35: ...ation 9 Outdoor comp 2 operation 2 3 Indoor Unit Status 1 Unit No Select the Unit No you want to check 2 FAN Fan tap 3 FLAP Swing fixed 4 Speed Fan speed rpm 5 EV Degree that electronic expansion valv...

Page 36: ...defrost operation 2 Forced defrost OFF Disables the forced defrost operation 2 6 Error Display 1 Display Warning ON Displays a warning on the screen if an error occurs 2 Display Warning OFF No warnin...

Page 37: ...splay No display 0 L 0 Error code blinks when an error occurs Inspection mode Press the button Press the button Press the button Indoor unit model code display Outdoor unit model code display A A 1 Te...

Page 38: ...Protection Control 44 4 1 High Pressure Protection Control 44 4 2 Low Pressure Protection Control 45 4 3 Discharge Pipe Protection Control 46 4 4 Inverter Protection Control 47 5 Other Control 48 5 1...

Page 39: ...ation Oil return starting conditions are met Defrost starting conditions are met Operation mode change Note In the event indoor unit stops or the thermostat turns OFF while in oil return operation or...

Page 40: ...pansion valve Subcooling EV3 Y3E PI control Solenoid valve Hot gas SVP Y2S Y2S OFF OFF This valve turns ON with low pressure protection control Solenoid valve Receiver gas discharging SVG Y3S OFF Part...

Page 41: ...and Tc at constant during heating operation to ensure stable unit performance Cooling Heating RZR18 24 30P RZQ18 24 30P Compressors may operate in a pattern other than those listed in above tables su...

Page 42: ...STn INV Full load INV Unload 1 36 0Hz 11 80 0Hz 21 140 0Hz 2 39 0Hz 12 86 0Hz 22 146 0Hz 3 43 0Hz 13 92 0Hz 23 152 0Hz 4 47 0Hz 14 98 0Hz 24 158 0Hz 5 52 0Hz 15 104 0Hz 25 164 0Hz 6 52 0Hz 57 0Hz 16 1...

Page 43: ...ng outdoor unit fan STEP 5 STEP 4 STEP 3 STEP 2 STEP 1 STEP 0 STEP 8 STEP 7 STEP 6 Cooling STEP 0 STEP 1 STEP 2 STEP 3 STEP 4 STEP 5 STEP 6 STEP 7 STEP 8 M1F 0 rpm 200 rpm 250 rpm 300 rpm 360 rpm 430...

Page 44: ...High pressure control Initial fan speed is set to STEP 0 1 step increase with Pc 305 psi 1 step decrease with Pc 261 psi Four way valve 20S1 Y1S Y1S OFF Electronic expansion valve Main EV1 Y1E Y1E 14...

Page 45: ...of displaced oil is derived from Tc Te and the compressor load Parts Name Symbol Electric Symbol Oil return preparation operation Oil return operation Post oil return operation RZR18 24 32P RZQ18 24...

Page 46: ...on to the operation after oil return the compressor stops for 1 minute to reduce noise on changing of the four way valve Parts Name Symbol Electric Symbol Oil returnpreparation operation Oil return op...

Page 47: ...and from the defrost operation to the operation after defrost the compressor stops for 1 minute to reduce noise on changing of the four way valve Parts Name Symbol Electric Symbol Defrost preparation...

Page 48: ...lectric Symbol Master unit operation RZR18 24 32P RZQ18 24 30P RZR36 42P RZQ36 42P Compressor INV M1C M1C 124 Hz Outdoor unit fan M1F M1F M2F Fan control Four way valve 20S1 Y1S Y1S OFF Electronic exp...

Page 49: ...unit fan M1F M1F M2F Ta 86 F STEP 4 Ta 86 F OFF Four way valve 20S1 Y1S Y1S Keep former condition Electronic expansion valve Main EV1 Y1E Y1E 0 pls Solenoid valve Hot gas SVP Y2S Y2S ON Solenoid valv...

Page 50: ...addition inverters turn ON electricity and capacitors are charged Parts Name Symbol Electric Symbol Operation Remarks RZR18 24 32P RZQ18 24 30P RZR36 42P RZQ36 42P Compressor INV M1C M1C OFF Outdoor...

Page 51: ...gh pressure limited INV upper limit frequency 1 step up from current compressor frequency INV upper limit frequency 1 step up from current error frequency INV upper limit frequency 1 step down from cu...

Page 52: ...urring 3 times within 60 min the error code E4 is output Low pressure standby Low pressure limited Pe 10 psi 145 5Hz Upper limit SVP OFF SVP ON Pe 36 psi Inverter upper limit frequency More than 145 5...

Page 53: ...OR Discharge pipe protection control not limited Keep the current step Inverter frequency 1 step down from current compressor frequency lower limit 57Hz Inverter upper limit frequency 1 step up from...

Page 54: ...it frequency 1 step up from current compressor frequency Inverter current standby Inverter current X A continues for 3 min Status quo Without conditions X A 13 7 12 7 Inverter current X A INV upper li...

Page 55: ...SiUS281117 Other Control 48 Function and Control 5 Other Control 5 1 Heating Operation Prohibition Heating operation is prohibited above 82 FDB outdoor air temperature...

Page 56: ...ome to an abnormal stop in 5 minutes if the float switch is turned OFF while the cooling thermostat is ON 6 1 2 When the Float Switch is Tripped while the Cooling Thermostat is OFF Note 3 Error residu...

Page 57: ...ror is determined to have occurred AF is then displayed as operation continues 6 Error residual The remote controller will display A3 and the air conditioner will come to an abnormal stop if the float...

Page 58: ...ed The factory setting position is standard position P0 P1 P2 P4 P3 P0 P1 P2 P4 P3 P0 P0 P1 P2 P4 P4 P2 P1 P0 P4 P4 P3 P2 P1 P0 P3 Existing position Draft prevention position Not for Multi flow type D...

Page 59: ...ear the position of the user when the suction air temperature is near the set temperature Ex When cooling Assuming the set temperature in the figure above is 75 F and the suction air temperature has c...

Page 60: ...and the suction air temperature has changed from 64 F to 82 F A D This example also assumes there are several other air conditioners the system is OFF and that temperature changes even when the thermo...

Page 61: ...F Set cooling temp Heating mode Cooling mode Control temp Differential value set to 3 6 F 75 2 F 82 4 F Heating mode Cooling mode Control temp Differential value set to 5 4 F 74 3 F Heating mode Cool...

Page 62: ...eturns Conditions for starting freeze up prevention Temperature is 30 2 F or less for total of 40 min or temperature is 23 F or less for total of 10 min Conditions for stopping freeze up prevention Te...

Page 63: ...direction LL Level Level Level Halt Swinging OFF Level Level Level Setting the airflow direction OFF Level Level Level Cooling Thermostat of program dry is ON Swinging L 1 Swinging Swinging Swinging...

Page 64: ...start condition 2 is established the operations shown below will be conducted TH2 Temperature detected with the gas thermistor TC High pressure equivalent saturated temperature The fan is not OFF befo...

Page 65: ...Temperature detected with the gas thermistor TC High pressure equivalent saturated temperature The fan is not OFF before initiating the hot start LL The fan is OFF before initiating the hot start OFF...

Page 66: ...Pump Fan normal operation Continues for 5 minutes Continues for 5 minutes Continues for 5 minutes Timer clear Timer clear Timer clear Fan H tap 120 seconds 2 Fan H tap 120 seconds 2 Thermostat OFF Co...

Page 67: ...d of time after the heater turns OFF 3 High pressure condition 4 Liquid pipe temperature condition Condition A Thermostat step 2 ON Heating mode Not during test operation Not during control operation...

Page 68: ...conditions for this electrical heater are shown below Thermostat OFF Stop operation Thermostat step 1 H P Fan Normal operation Timer count 5 minutes Timer count 5 minutes Timer count 5 minutes Timer c...

Page 69: ...trical heater setting 01 Electrical heater setting 03 Elimination of Condition A Indoor unit error Stop due to error Indoor unit error Abnormal stop Indoor unit error Remote control thermistor error I...

Page 70: ...difier and it is used for humidifiers locally connected in North America 2 External input ON is an input signal to the X12A terminal on the PCB for additional I O Fan residual operation for Y seconds...

Page 71: ...an input signal to the X11A terminal on the PCB for additional I O 3 To stop the compressor while the economizer is in operation to save energy 4 Remote control ON signal Contact output which shows t...

Page 72: ...ler 70 2 1 Wired Remote Controller 70 2 2 Wireless Remote Controller 73 2 3 Setting Contents and Code No for Indoor Units 74 3 Field Setting from Outdoor Unit 80 3 1 Location of DIP Switch and BS Butt...

Page 73: ...an 200 230V circuit Are the setscrews of wiring not loose Is the electrical component box covered with an insulation cover completely Is pipe size proper The design pressure of this product is 478 psi...

Page 74: ...ine E4 The stop valve of outdoor unit is not opened Open the gas side stop valve and the liquid side stop valve Insufficient refrigerant Check if the additional refrigerant charge has been finished co...

Page 75: ...t the indoor outdoor units can be operated normally When an abnormal noise due to liquid compression by the compressor can be heard stop the unit immediately and then on the crankcase heater to heat u...

Page 76: ...addition cannot be recognized In this case the unit cannot be run for up to 12 minutes to automatically set the address indoor outdoor address etc Status Outdoor unit Test lamp H2P Blinks Can also be...

Page 77: ...mal mode press the button N for 4 seconds or more and the FIELD SETTING MODE is entered 2 Select the desired MODE NO with the button O 3 During group control when setting by each indoor unit mode No 2...

Page 78: ...lable SECOND CODE NO is displayed as which means it can be changed When SECOND CODE NO is displayed as there is no function 5 Highlight SECOND CODE NO of the FIRST CODE NO to be changed and select des...

Page 79: ...d setting details related to the indoor unit see installation manual shipped with the indoor unit 10 Backlight goes out and Checking the connection Please standby is displayed for initialization After...

Page 80: ...o with the button 3 Pressing the button select the first code No 4 Pressing the button select the second code No 5 Press the timer button and check the settings 6 Press the button to return to the nor...

Page 81: ...mistor Both Remote thermistor Remote controller thermistor 3 Filter sign display ON OFF 7 4 step thermostat processing 11 21 3 5 Electric heater setting Heat Pump lockout mode Auxiliary electric heate...

Page 82: ...ontroller thermistor 3 Filter sign display 7 4 step thermostat processing 11 21 3 Electric heater setting 5 Electric heater step setting 12 22 0 Optional accessories output selection 1 ON OFF Input fr...

Page 83: ...over when Thermostat is OFF By setting to Set Fan Speed you can switch the fan speed to the set fan speed when the heating thermostat is OFF Since there is concern about draft if using fan speed up wh...

Page 84: ...reasons when the unit is set enabling to utilize Auto restart function after power failure reset utmost care should be paid for the occurrence of the following situation Setting of Airflow Direction...

Page 85: ...tion mode setting by remote controller can be set and displayed by operation modes 0 through 19 ON OFF control impossible by remote controller Used when you want to turn ON OFF by centralized remote c...

Page 86: ...etting Unified operation individual operation by centralized remote controller or operation controlled by timer Unified OFF individual stop by centralized remote controller or timer stop ON OFF contro...

Page 87: ...rvice monitor Connection terminal for transmission use HAP MODE L N O P DEMAND HWL k TEST l IND MASTER SLAVE A2P A1P 4 DIP switch F1 F2 F1 F2 ON OFF TO IN D UNIT TO OUT D UNIT C H SELECTOR DIP switche...

Page 88: ...ing There are the following 3 setting modes 1 Setting mode 1 H1P OFF Initial status when normal Also indicates during abnormal 2 Setting mode 2 H1P ON Used to modify the operating status and to set pr...

Page 89: ...MODE button the modes can be changed as follows Check item selection Set Contents display Monitor mode Press BS3 RETURN once Press BS3 RETURN once Setting item selection Set Setting mode 2 Set Select...

Page 90: ...current operating conditions Normal Abnormal In check operation Normally Setting mode 1 is set In case of other status press MODE button BS1 once and set to Setting mode 1 The current state is displa...

Page 91: ...peration setting is also required 27 Low night noise operation end setting Sets ending time of low night noise operation Low night noise setting is also required 29 Capacity priority setting If the ca...

Page 92: ...h h k k h h External low noise demand NO k h h h h h k External low noise demand YES k h h h h k h 16 Setting of hot water heater k h k h h h h OFF khhhhhk ON khhhhkh 21 Refrigerant recovery vacuumin...

Page 93: ...l h L l h h h h h h Tc setting H l h h h h h k M l h h h h h l L l h h h h h h Selection of setting item Confirmation on setting contents To enter the monitor mode press the MODE button BS1 when in S...

Page 94: ...e Mode 1 Mode 2 or Mode 3 for set item No 25 Setting of external low noise level 4 If necessary while in Setting mode 2 set the setting condition for the set item No 29 Setting of capacity precedence...

Page 95: ...ight noise start setting Time set with Low night noise end setting Operation sound level set with Low night noise setting Set with Low night noise start setting Factory setting is PM 10 00 Set with Lo...

Page 96: ...he external control adaptor for outdoor unit is not required 1 While in Setting mode 2 make setting of the set item No 32 Setting of alternate demand to ON 2 While in Setting mode 2 select the set ite...

Page 97: ...ting When the Normal demand setting is set to ON OFF has been set at factory the power consumption can be set with the Demand 1 level setting 70 of rated power consumption has been set at factory Powe...

Page 98: ...e you want 4 Press the BS3 RETURN button 2 times Returns to 5 Press the BS1 MODE button once Returns to the setting mode 1 and turns H1P OFF ON OFF l Blink 1 2 3 Factory setting Setting No Setting con...

Page 99: ...instruction attached to the refrigerant recovery unit for more detail 3 Press Mode button BS1 once and reset Setting Mode 2 3 7 5 Setting of Vacuuming Mode In order to perform vacuuming operation at...

Page 100: ...ton BS4 for 5 seconds 10 seconds to 10 minutes LED display H1P H7P k ON l BLINK h OFF hhkhhhh hlhhhhk Pressure equalizing Step 1 20 seconds to 2 minutes 10 minutes To 30 seconds hlhhhkh Cooling start...

Page 101: ...istor Abnormality 125 2 18 Combination Error between Indoor Unit PCB and Fan PCB 126 2 19 Suction Air Thermistor Abnormality 127 2 20 Humidity Sensor System Abnormality 128 2 21 Room Temperature Therm...

Page 102: ...Operation not Executed 164 2 45 Transmission Error between Indoor Units and Outdoor Units 165 2 46 Transmission Error between Remote Controller and Indoor Unit 168 2 47 Transmission Error between Mai...

Page 103: ...eat sources e g OA equipment located in a room 4 The system does not operate The system stops and immediately restarts operation If the OPERATION lamp on the remote controller turns ON the system will...

Page 104: ...ches the set degree the outdoor unit will stop while the indoor unit is brought to fan LL operation so that no one gets cold air The fan LL operation is also enabled while in oil return mode in coolin...

Page 105: ...hanges the operating frequency Normal operation 12 Dust comes out from the system Dust comes out from the system when it restarts after the stop for an extended period of time Dust which has deposited...

Page 106: ...ting mode Depress the Inspection Test Operation button for more than 4 seconds Service mode Service data can be obtained Error code history Temperature data of various sections Service settings can be...

Page 107: ...103 for error code and error contents Note 1 Pressing the INSPECTION TEST button will blink the check indication 2 While in check mode pressing and holding the ON OFF button for a period of 5 seconds...

Page 108: ...corrective action Operation Status Display Abnormal stop The system stops operating The operation lamp green starts to blink The message Error Push Menu button will appear and blink at the bottom of...

Page 109: ...ontinue the operation in step 4 until a buzzer remains ON The continuous buzzer indicates that the error code is confirmed Continuous beep No abnormality 3 Press the MODE selector button The left 0 up...

Page 110: ...137 E9 Electronic Expansion Valve Coil Abnormality 138 F3 Discharge Pipe Temperature Control Error 141 F6 Refrigerant Overcharged 143 H3 High Pressure Switch Abnormality 144 H7 Outdoor Unit Fan Motor...

Page 111: ...the connection of the harness connector between the panel PCB and the indoor unit PCB AH 04 Dust detection sensor error when the self cleaning decoration panel is mounted Check for the connections of...

Page 112: ...miting current is flowing in the inverter This error is supposed to have resulted from failure to open the stop valve excessive charging of refrigerant clogging in the indoor unit filter stain in the...

Page 113: ...its detected There are a number of indoor units with a remote controller connected Connect the remote controller to only one indoor unit UA 03 Excess indoor units connected This error will be displaye...

Page 114: ...of discharge pipe temperature Defective Tdi sensor short J3 Defective sensor of suction pipe temperature Defective Ts1 sensor short J5 Defective Ts2 sensor short Defective sensor of heat exchanger tem...

Page 115: ...h h L1 l l h h l l l l h k h h h l l k h h h h h l k k h h h h l h k h h h l l k h h h h h l k k h h h l l h k h h h l l k h h h h h l k k h h l h l h k h h h l l k h h h h h l k k h h l l l h k h h...

Page 116: ...ion of external protection device Improper field setting Defective indoor unit PCB Troubleshooting Actuation of external protection device External protection device is connected to terminals T1 and T...

Page 117: ...be erased either within the computer or externally and usually requires more voltage for erasure than the common 5 volts used in logic circuits It functions like non volatile RAM but writing to E PROM...

Page 118: ...Option FTQ Method of Error Detection By float switch OFF detection Error Decision Conditions The error is generated when the water level reaches its upper limit and when the float switch turns OFF Sup...

Page 119: ...nected to the indoor unit PCB NO NO NO Is the float switch connected to the indoor unit PCB NO NO NO NO NO Is the drain pump mechanism connected YES YES YES Error is displayed again YES YES 220 10 VAC...

Page 120: ...ion do not increase while the output voltage to the fan is at its maximum Supposed Causes Disconnection short circuit or disengagement of connector in fan motor harness Defective fan motor disconnecti...

Page 121: ...onnect correctly With connector for fan motor disconnected can the fan be easily turned by hands NO YES Replace the fan motor Is the resistance between each pin above judgement standard NO Replace the...

Page 122: ...y the limit switch when the motor turns Error Decision Conditions When ON OFF of the micro switch for position detection cannot be reversed even though the swing flap motor is energized for a specifie...

Page 123: ...ce and back ON and check whether the swing flap motor swings when the power supply is turned back ON Turn the power supply OFF once and restart and measure the output voltage of connector 3 when the p...

Page 124: ...fective wiring Instantaneous blackout others Troubleshooting Check the condition of the power supply Check if power supply voltage is 208V 230V 10 Check if there is power open phase or defective wirin...

Page 125: ...ion valve coil Defective indoor unit PCB Defective relay cable Troubleshooting The electronic expansion valve is connected to X7A of the indoor unit PCB Normal when coil check 1 of the electronic expa...

Page 126: ...n valve coil Discount the electronic expansion valve from the PCB and check the continuity between the connector pins Normal Continuity No continuity Pin No 1 White 2 Yellow 3 Orange 4 Blue 5 Red 6 Br...

Page 127: ...uses Error in the drain pipe installation Defective float switch Defective indoor unit PCB Defective connector connection Defective drain pump Troubleshooting Possible defective float switch Check to...

Page 128: ...ror Decision Conditions Operation and When the capacity code is not contained in the PCB memory and the capacity setting adaptor is not connected Supposed Causes Defective capacity setting adaptor con...

Page 129: ...Method of Error Detection Check the condition of transmission between indoor unit PCB and fan PCB using computer Error Decision Conditions When normal transmission is not conducted for certain durati...

Page 130: ...circuit and connect X70A back to original condition Confirm the condition of transmission on indoor unit PCB using field setting mode 2 Connect the connector X70A and turn ON the power again Connect t...

Page 131: ...quid pipe Defective indoor unit PCB Troubleshooting Note Connector and indoor unit PCB Refer to P 177 178 Connector is connected to the connector of the indoor unit PCB Resistance is normal when measu...

Page 132: ...gas pipe Defective indoor unit PCB Troubleshooting Note Connector and indoor unit PCB Refer to P 177 178 Connector is connected to the connector of the indoor unit PCB Resistance is normal when measur...

Page 133: ...capacity setting adaptor Defective field setting Troubleshooting Note 1 Type of fan PCB Replace it with correct fan PCB A2P Is the type of fan PCB A2P correct 1 Install correct capacity setting adapt...

Page 134: ...r for suction air Defective indoor unit PCB Troubleshooting Note Connector and indoor unit PCB Refer to P 177 178 Connector is connected to the connector of the indoor unit PCB Resistance is normal wh...

Page 135: ...of the remote controller must be pressed and held for 5 seconds in the check mode 2 To display the code the Inspection Test button of the remote controller must be pressed and held in the normal mode...

Page 136: ...but the system operates continuously Supposed Causes Defective room temperature thermistor in remote controller Defective remote controller PCB External factor Noise etc Troubleshooting Note 1 How to...

Page 137: ...pposed Causes Defective outdoor unit PCB Defective fan motor External factor Noise etc Troubleshooting External factor Noise etc Does it return normally YES NO Turn the power supply OFF once and then...

Page 138: ...switch opens Error Decision Conditions Error is generated when the S1PH High pressure switch activation count reaches the number specific to the operation mode Reference Operating pressure of high pr...

Page 139: ...troller and then restart the operation Does the abnormal stop E3 recur Replace the high pressure switch Replace the high pressure sensor The high pressure sensor is normal and the pressure detected wi...

Page 140: ...Detection Abnormality is detected by the pressure value with the low pressure sensor Error Decision Conditions Error is generated when the low pressure is dropped during compressor operating Operatin...

Page 141: ...he low pressure value and the actual measurement value by pressure sensor are the same Replace the low pressure sensor The low pressure sensor is normal and the pressure detected with the PCB is also...

Page 142: ...els RZR RZQ Method of Error Detection Detect the motor lock when the compressor is energized Error Decision Conditions If the motor rotor does not rotate when the compressor is energized Supposed Caus...

Page 143: ...Is high pressure higher than 2 6 MPa at starting Check and see whether compressor is short circuited or ground NO YES Remedy the cause YES Replace the compressor Check the installation conditions Repl...

Page 144: ...connector between fan motor and PCB is left in disconnected or defective connector Fan does not run due to foreign matters tangled Clearing condition Operate for 5 minutes normal Troubleshooting Refer...

Page 145: ...ve opening degree Error Decision Conditions No common power supply when the power is turned ON When the following conditions are established Suction pipe superheated degree 39 2 F Discharge pipe super...

Page 146: ...alve Y1E YES Is there difference in temperature before and after electronic expansion valve Y1E during operation NO Mount properly YES Is the temperature sensor of each thermistor suction pipe dischar...

Page 147: ...ion Restart the operation Replace the outdoor unit PCB A1P YES Error is displayed again A External factor Noise etc NO CHECK 5 CHECK 6 CHECK 7 YES YES Replace the pressure sensor Are the pressure sens...

Page 148: ...the discharge pipe thermistor Error Decision Conditions When the discharge pipe temperature rises to an abnormally high level When the discharge pipe temperature rises suddenly When the discharge pipe...

Page 149: ...e thermistor Is the discharge pipe thermistor characteristic normal Replace the outdoor unit control PCB A1P NO YES NO Connect correctly and operate the unit again Is the discharge pipe thermistor cor...

Page 150: ...overcharge Disconnection of outdoor air thermistor Disconnection of heat exchanger deicer thermistor Troubleshooting Refer to P 177 178 Caution Be sure to turn off the power switch before connecting o...

Page 151: ...high pressure switch connector Defective outdoor unit PCB Disconnected lead wire Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts ma...

Page 152: ...n motor connection cable Inverter PCB abnormality Troubleshooting Note 1 Disconnect connector and measure the following resistance Is the fan motor connector X106A or X107A connected to PCB correctly...

Page 153: ...Defective outdoor unit PCB Troubleshooting Refer to P 177 178 Error Code Electric symbol Defective thermistor Connector H9 R1T Outdoor air thermistor X11A J3 R2T Discharge pipe thermistor X12A J5 R3T...

Page 154: ...cable Models RZR RZQ Method of Error Detection The error is detected from the pressure detected by the high pressure sensor Error Decision Conditions When the high pressure sensor is short circuit or...

Page 155: ...al see 1 when voltage is measured between X17A pins 1 and 3 of outdoor unit PCB A1P Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Caution R...

Page 156: ...cable Models RZR RZQ Method of Error Detection The error is detected from the pressure detected by the low pressure sensor Error Decision Conditions When the low pressure sensor is short circuit or op...

Page 157: ...when voltage is measured between X18A pins 2 and 3 of outdoor unit PCB A1P Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Caution Replace t...

Page 158: ...p Detect error using an SP PAM series capacitor overvoltage sensor Error Decision Conditions When overcurrent is detected at the time of waveform output before operating the compressor When the curren...

Page 159: ...uity External factor Noise etc NO Connect tightly and correctly NO Replace the fan motor NO Replace the fuse Use only specified fuses NO NO Turn OFF the power supply Replace the outdoor unit PCB Is th...

Page 160: ...verter radiation fin Defective connection of connector Troubleshooting The radiation fin temperature is supposed to have risen to 180 F or more Is the connector X111A of the radiation fin thermistor p...

Page 161: ...layed when the inverter output voltage is checked by tester The compressor s coil is disconnected or the insulation is defective Inverter output voltage check Inverter output voltage is not balanced N...

Page 162: ...f Error Detection The error is detected from the current flowing to power transistor into voltage with CT1 DC current sensor Error Decision Conditions When compressor overload except for when startup...

Page 163: ...or disconnecting connectors or parts may be damaged Output current check Caution Compressor overload Inspection of the compressor and refrigerant system is required Compressor inspection Inspect acco...

Page 164: ...on The error is detected from the current flowing to power transistor into voltage with CT1 DC current sensor Inverter PCB detects the disorder of position signal Error Decision Conditions When compre...

Page 165: ...nspection Inspect according to the diagnosis procedure for abnormal noises vibration operating status etc of the compressor Replace the outdoor unit PCB NO NO Replace the compressor Continuity check i...

Page 166: ...en control and inverter PCB Insufficient contact in wiring Defective outdoor unit PCB Defective outdoor unit fan motor External factor Noise etc Defective fan motor connector contact Troubleshooting I...

Page 167: ...ting Supposed Causes Defective radiation fin thermistor Defective outdoor unit PCB A1P External factor Noise etc Troubleshooting Note 1 Connector and indoor unit PCB Refer to P 177 178 Disconnect the...

Page 168: ...fully and the suction superheat is large more than 68 F continuously for 30 minutes Error code is displayed but the system operates continuously Supposed Causes The stop valve is not opened Insufficie...

Page 169: ...cording to the voltage of main circuit capacitor built in the inverter and power supply voltage Error Decision Conditions When the abnormal voltage of main circuit capacitor built in the inverter and...

Page 170: ...transistor Replace the inverter PCB Observe the conditions of the PCB In the case of a serious failure a compressor failure may cause the failure of the PCB Even if the PCB is replaced it may cause f...

Page 171: ...ions The error is decided when the unit starts operation without check operation Supposed Causes Check operation is not executed Troubleshooting Has the check operation performed on Outdoor unit PCB P...

Page 172: ...Detection Micro computer checks if transmission between indoor and outdoor units is normal Error Decision Conditions When transmission is not carried out normally for a certain amount of time or longe...

Page 173: ...or the optional accessory supplied from between 1 and 2 on terminal block X2M Is HAP on the outdoor unit PCB blinking Is HAP blinking Request an improvement to make the power supply voltage fall withi...

Page 174: ...place the fuse Is the output voltage normal Replace the outdoor unit inverter PCB Does U4 error reoccur Replace the outdoor unit inverter PCB After turning OFF the power supply correctly insert the co...

Page 175: ...r unit PCB Defective remote controller PCB External factor Noise etc Troubleshooting Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Caution...

Page 176: ...ime Supposed Causes Transmission error between main and sub remote controller Connection between sub remote controllers Defective remote controller PCB Troubleshooting Controlling with 2 remote contro...

Page 177: ...ror Detection Micro computer checks if transmission between indoor unit and centralized remote controller is normal Error Decision Conditions When transmission is not carried out normally for a certai...

Page 178: ...d or wired incorrectly Is the main controller s connector for setting main controller disconnected Is the group No of error indoor units set Caution Be sure to turn off the power switch before connect...

Page 179: ...Defective indoor unit PCB Stop valve is not opened Troubleshooting Note Wiring check operation may not be successful if carried out after the outdoor unit has been OFF for more than 12 hours or if it...

Page 180: ...veservicemonitorPCB Are the electrical characteristics normal In the connector properly connected Are the thermistor resistance characteristics normal Is the pressure value checked with the Service Ch...

Page 181: ...Defective outdoor unit electronic expansion valve Defective valve coil Defective valve body Are the coil resistance and insulation normal In heating If the outdoor unit electronic expansion valve exc...

Page 182: ...nd there is no short circuiting while connector or relay connector is disconnected Note Check on connector of fan motor is not available for below models FCQ18 42PAVJU FAQ18 24PVJU CHECK 3 FHQ18 42MVJ...

Page 183: ...r confirming that the outdoor unit fan has stopped because electrical energy is stored in the capacitor and there may be a risk of electric shock 5 Remove the wire connecting the power transistor and...

Page 184: ...R1T R1T Suction air thermistor 2 R2T R2T R2T R2T R1T Heat exchanger liquid pipe thermistor 2 R3T R3T R3T R3T R2T Heat exchanger gas pipe thermistor 2 R4T Discharge air thermistor 3 R5T NTC thermistor...

Page 185: ...74 86 15 61 86 16 1008 86 160 2244 95 12 64 95 13 0426 95 130 0697 104 10 30 104 10 6281 104 106 1517 113 8 439 113 8 7097 113 87 0725 122 6 954 122 7 1764 122 71 7703 131 5 761 131 5 9407 131 59 4735...

Page 186: ...lack White Pressure sensor GND Micro computer A D input Measure DC voltage here Detected Pressure Output voltage VH PH Kg cm MPa 5 0 4 5 4 0 3 5 3 0 2 5 2 0 1 5 1 0 0 5 0 5 1 5 2 5 0 5 0 5 0 1 2 3 5 3...

Page 187: ...nnector correctly connected Does the thermistor have normal resistance characteristics Is the pressure reading of the service checker corresponding to the actual measurement of the sensor Can the fan...

Page 188: ...contamination etc Replace the electronic expansion valve 2 Accumulator Frosting Choked moisture Blow a nitrogen gas and then replace the refrigerant 3 Distributor Temperature difference Dust Choked mo...

Page 189: ...SiUS281117 182 Appendix Part 7 Appendix 1 Piping Diagrams 183 1 1 Indoor Unit Outdoor Unit 183 1 2 Indoor Unit 185 2 Wiring Diagrams 187 2 1 Outdoor Unit 187 2 2 Indoor Unit 189...

Page 190: ...Electronic expansion valve Electronic expansion valve Field piping Field piping 3 8 5 8 Stop valve Indoor unit with service port 5 16 flare Fusible plug Solenoid valve Solenoid valve Capillary tube F...

Page 191: ...nic expansion valve Service port Capillary tube Pressure regulating valve Heat exchanger Service port Low pressure sensor Solenoid valve Capillary tube Capillary tube High pressure switch Oil separato...

Page 192: ...VJU FHQ42MVJU FBQ36PVJU FBQ42PVJU 4D024460F Heat exchanger M Fan Filter Filter Liquid pipe connection port Gas pipe connection port Electronic expansion valve 4D034245F Heat exchanger M Fan Filter Fil...

Page 193: ...117 Piping Diagrams 186 Appendix FTQ18PAVJU FTQ24PAVJU C 4D068194 M Fan Heat exchanger Filter Electronic expansion valve Filter Field piping Liquid pipe connection port Gas pipe connection port Field...

Page 194: ...E MONITOR ORANGE OPERATION PILOT LAMP SERVICE MONITOR GREEN INV PILOT LAMP SERVICE MONITOR GREEN MAGNETIC CONTACT SWITCH MAGNETIC RELAY Y1S MAGNETIC RELAY Y2S MAGNETIC RELAY Y3S MAGNETIC RELAY REACTOR...

Page 195: ...RE TEST FLICKERING MALFUNCTION DETECTION LIGHT UP OPERATION PILOT LAMP SERVICE MONITOR GREEN A1P INV PILOT LAMP SERVICE MONITOR GREEN A1P MAGNETIC CONTACT SWITCH MAGNETIC RELAY Y1S MAGNETIC RELAY Y2S...

Page 196: ...MOTOR SWING FLAP THERMISTOR AIR THERMISTOR COIL LIQUID THERMISTOR COIL GAS FLOAT SWITCH DIODE BRIDGE TERMINAL STRIP TERMINAL STRIP ELECTRONIC EXPANSION VALVE FERRITE CORE NOISE FILTER POWER SUPPLY CI...

Page 197: ...DE FILTER SIGN RED WIRED REMOTE CONTROLLER RECEIVER DISPLAY UNIT ATTACHED TO WIRELESS REMOTE CONTROLLER LIGHT EMITTING DIODE DEFROST ORANGE SELECTOR SWITCH MAIN SUB SELECTOR SWITCH WIRELESS ADDRESS SE...

Page 198: ...REMOTE CONTROLLER KIT IS USED A1P F1U HAP M1F M1S R1T R2T R3T X1M X2M Y1E PS A2P A3P BS1 H1P H2P H3P H4P SS1 SS2 PRINTED CIRCUIT BOARD FUSE T 3 15AH 250V LIGHT EMITTING DIODE SERVICE MONITOR GREEN MOT...

Page 199: ...SISTOR CURRENT LIMITING CURRENT SENSING DEVICE RESISTOR ELECTRIC DISCHARGE THERMISTOR SUCTION AIR R2T R3T R4T R5T S1L V1R V2R X1M X2M Y1E Z1C Z2C Z1F X28A X33A X35A R1T THERMISTOR LIQUID THERMISTOR GA...

Page 200: ...ATER HKR 06 HKR 08C HKR 10C AFTER INSTALLING OPTIONAL HEATER KIT MARK A X IN THE MARK ACCORDING TO ELECTRIC HEATER KIT MODEL INSTALLED 1 FIELD WIRING TERMINAL CONNECTOR TERMINAL BLOCK PROTECTIVE GROUN...

Page 201: ...SiUS281117 Wiring Diagrams 194 Appendix...

Page 202: ...t corrosion 1 Air conditioners should not be installed in areas where corrosive gases such as acid gas or alkaline gas are produced 2 If the outdoor unit is to be installed close to the sea shore dire...

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