Daikin R407C PLUS Service Manual
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Daikin R407C PLUS Service Manual

Heat recovery system
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Si33-105
Service
Manual
System
R407C PLUS Series
Heat Recovery System

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Summary of Contents for Daikin R407C PLUS

  • Page 1 Si33-105 Service Manual System R407C PLUS Series Heat Recovery System...

  • Page 2: Table Of Contents

    Heat Recovery System 1. Introduction .....................v 1.1 Safety Cautions ..................v 1.2 PREFACE ....................ix Part 1 General Information R407C PLUS Series Heat Recovery System............1 1. Product Outline ..................2 1.1 Year 2001 Models Using New Refrigerant ..........2 1.2 Outline of New Series Products ...............3 1.3 Model Configuration and Combination .............5...
  • Page 3 4.1 Drain Pump Control................97 4.2 Louver Control for Preventing Ceiling Dirt..........99 4.3 Thermostat Sensor in Remote Controller..........100 4.4 Freeze Prevention ................102 Part 4 Test Operation R407C PLUS Series Heat Recovery System........... 103 1. Test Operation ..................104 1.1 Procedure and Outline .................104 1.2 Operation When Power is Turned On ..........106...
  • Page 4 Si33-105 3.12 Indoor Unit: Malfunction of Thermostat Sensor in Remote Controller ................168 3.13 Outdoor Unit: Actuation of Safety Device..........169 3.14 Outdoor Unit: PC Board Defect ............170 3.15 Outdoor Unit: Actuation of High Pressure Switch.........171 3.16 Outdoor Unit: Actuation of Low Pressure Sensor.........172 3.17 Outdoor Unit: Malfunction of Moving Part of Electronic Expansion Valve (Y1E)............173 3.18 Outdoor Unit: Abnormal Discharge Pipe Temperature......174...
  • Page 5 8.2 Display “Under Host Computer Integrate Control” Blinks (Repeats Single Blink)................215 8.3 Display “Under Host Computer Integrate Control” Blinks (Repeats Double Blink) ................217 Part 6 Appendix R407C PLUS Series Heat Recovery System........... 219 1. Piping Diagram..................220 1.1 Outdoor Unit ..................220 1.2 BS Unit ....................222...

  • Page 6: Introduction

    Si33-105 Introduction 1. Introduction Safety Cautions Cautions and Be sure to read the following safety cautions before conducting repair work. The caution items are classified into “ Warning” and “ Caution”. The “ Warning” Warnings items are especially important since they can lead to death or serious injury if they are not followed closely.
  • Page 7 Introduction Si33-105 Caution Do not repair the electrical components with wet hands. Working on the equipment with wet hands can cause an electrical shock. Do not clean the air conditioner by splashing water. Washing the unit with water can cause an electrical shock. Be sure to provide the grounding when repairing the equipment in a humid or wet place, to avoid electrical shocks.
  • Page 8 Si33-105 Introduction Warning Be sure to use the specified cable to connect between the indoor and outdoor units. Make the connections securely and route the cable properly so that there is no force pulling the cable at the connection terminals. Improper connections can cause excessive heat generation or fire.
  • Page 9 Introduction Si33-105 Caution Check to see if the parts and wires are mounted and connected properly, and if the connections at the soldered or crimped terminals are secure. Improper installation and connections can cause excessive heat generation, fire or an electrical shock. If the installation platform or frame has corroded, replace it.

  • Page 10: Preface

    PREFACE Thank you for your continued patronage of Daikin products. This is the new service manual for Daikin's Year 2001 R407C VRV PLUS series Heat Recovery System. Daikin offers a wide range of models to respond to building and office air conditioning needs.
  • Page 11 Introduction Si33-105...

  • Page 12: Part 1 General Information R407C Plus Series Heat Recovery System

    Heat Recovery System Heat Recovery System Heat Recovery System 1. Product Outline ..................2 1.1 Year 2001 Models Using New Refrigerant ..........2 1.2 Outline of New Series Products ...............3 1.3 Model Configuration and Combination .............5 General Information R407C PLUS Series Heat Recovery System...

  • Page 13: Product Outline

    20type Indoor unit connection capacity 50 - 130% of outdoor unit total capacity No. of connectable indoor units RSEYP16 ~ 20K Max. 20 units RSEYP24 ~ 30K Max. 32 units (V2599) General Information R407C PLUS Series Heat Recovery System...

  • Page 14: Outline Of New Series Products

    Reduction of installation area 20HP 30HP Conventional system 11.6%reduction 13.7%reduction Function-unit-less system (V0803) Simpler piping work at installation sites 20HP 30HP 15 joints → 7 joints 21 joints → 7 joints Pipe connecting locations General Information R407C PLUS Series Heat Recovery System...
  • Page 15 Heating operation with outdoor air temperature as low as –15°C Simple REFNET piping system Super wiring system Automatic address setting function Built-in wiring error check function Equipped with sequential start function Nighttime low-noise mode for reduced operating sound General Information R407C PLUS Series Heat Recovery System...

  • Page 16: Model Configuration And Combination

    In some models, it is not possible to connect the maximum number of connectable indoor units. Select models so the total capacity of connected indoor units conforms to the specification. General Information R407C PLUS Series Heat Recovery System...
  • Page 17 RSEYP20KJY1 28.0kW or more Total indoor unit capacity allowed Range B for simultaneous cooling/heating RSEYP24KJY1 33.6kW or more operations RSEYP26KJY1 36.4kW or more RSEYP28KJY1 39.2kW or more 32 units or less RSEYP30KJY1 42.0kW or more General Information R407C PLUS Series Heat Recovery System...

  • Page 18: Part 2 Specifications R407C Plus Series Heat Recovery System

    R407C PLUS Series R407C PLUS Series R407C PLUS Series Heat Recovery System Heat Recovery System Heat Recovery System Heat Recovery System 1. Specifications ..................8 1.1 Outdoor Unit .....................8 1.2 BS unit....................12 1.3 Indoor Unit....................13 Specifications R407C PLUS Series Heat Recovery System...

  • Page 19: Specifications

    1 Indoor temp. : 27°C DB or 19°C WB / outdoor temp. : 35°C DB / Equivalent piping length : 7.5m, level difference : 0m. " 2 Indoor temp. : 20°C DB / outdoor temp. : 7°C DB or 6°C WB / equivalent piping length : 7.5m, level difference : 0m. Specifications R407C PLUS Series Heat Recovery System...
  • Page 20 1 Indoor temp. : 27°C DB or 19°C WB / outdoor temp. : 35°C DB / Equivalent piping length : 7.5m, level difference : 0m. " 2 Indoor temp. : 20°C DB / outdoor temp. : 7°C DB or 6°C WB / equivalent piping length : 7.5m, level difference : 0m. Specifications R407C PLUS Series Heat Recovery System...
  • Page 21 1 Indoor temp. : 27°C DB or 19°C WB / outdoor temp. : 35°C DB / Equivalent piping length : 7.5m, level difference : 0m. " 2 Indoor temp. : 20°C DB / outdoor temp. : 7°C DB or 6°C WB / equivalent piping length : 7.5m, level difference : 0m. Specifications R407C PLUS Series Heat Recovery System...
  • Page 22 1 Indoor temp. : 27°C DB or 19°C WB / outdoor temp. : 35°C DB / Equivalent piping length : 7.5m, level difference : 0m. " 2 Indoor temp. : 20°C DB / outdoor temp. : 7°C DB or 6°C WB / equivalent piping length : 7.5m, level difference : 0m. Specifications R407C PLUS Series Heat Recovery System...

  • Page 23: Bs Unit

    (Braze the connection between the attached pipe and field pipe.) " 2 Use the field flanged pipe. Also, with a 250 class indoor unit, connect the attached reducer to the field pipe. (Braze the connection between the attached pipe and field pipe.) Specifications R407C PLUS Series Heat Recovery System...

  • Page 24: Indoor Unit

    Return air temperature : 20°C DB, Outdoor temperature : 7°C DB, 6°C WB Equivalent ref. piping : 5m (Horizontal) " 3 Capacities are net, including a deduction for cooling (an addition for heating) for indoor fan motor heat. Specifications R407C PLUS Series Heat Recovery System...
  • Page 25 Return air temperature : 20°C DB, Outdoor temperature : 7°C DB, 6°C WB Equivalent ref. piping : 5m (Horizontal) " 3 Capacities are net, including a deduction for cooling (an addition for heating) for indoor fan motor heat. Specifications R407C PLUS Series Heat Recovery System...
  • Page 26 Return air temperature : 20°C DB, Outdoor temperature : 7°C DB, 6°C WB Equivalent ref. piping : 5m (Horizontal) 3 Capacities are net, including a deduction for cooling (an addition for heating) for indoor fan motor heat. Specifications R407C PLUS Series Heat Recovery System...
  • Page 27 Return air temperature : 20°C DB, Outdoor temperature : 7°C DB, 6°C WB Equivalent ref. piping : 5m (Horizontal) " 3 Capacities are net, including a deduction for cooling (an addition for heating) for indoor fan motor heat. Specifications R407C PLUS Series Heat Recovery System...
  • Page 28 Return air temperature : 20°C DB, Outdoor temperature : 7°C DB, 6°C WB Equivalent ref. piping : 5m (Horizontal) " 3 Capacities are net, including a deduction for cooling (an addition for heating) for indoor fan motor heat. Specifications R407C PLUS Series Heat Recovery System...
  • Page 29 3 Capacities are net, including a deduction for cooling (an addition for heating) for indoor fan motor heat. " 4 Static external pressure is changeable to change over the connectors inside electrical box, this pressure means “High static pressure-Standard-Low static pressure”. Specifications R407C PLUS Series Heat Recovery System...
  • Page 30 3 Capacities are net, including a deduction for cooling (an addition for heating) for indoor fan motor heat. " 4 Static external pressure is changeable to change over the connectors inside electrical box, this pressure means “High static pressure-Standard-Low static pressure”. Specifications R407C PLUS Series Heat Recovery System...
  • Page 31 3 Capacities are net, including a deduction for cooling (an addition for heating) for indoor fan motor heat. " 4 Static external pressure is changeable to change over the connectors inside electrical box, this pressure means “High static pressure-Standard”. Specifications R407C PLUS Series Heat Recovery System...
  • Page 32 “High Static pressure-Standard-Low static pressure”. " 5 Air filter is not standard accessory, but please mount it in the duct system of the suction side. Select its colorimetric method (gravity method) 50% or more. Specifications R407C PLUS Series Heat Recovery System...
  • Page 33 “High Static pressure-Standard-Low static pressure”. " 5 Air filter is not standard accessory, but please mount it in the duct system of the suction side. Select its colorimetric method (gravity method) 50% or more. Specifications R407C PLUS Series Heat Recovery System...
  • Page 34 Return air temperature : 20°C DB, Outdoor temperature : 7°C DB, 6°C WB Equivalent ref. piping : 5m (Horizontal) " 3 Capacities are net, including a deduction for cooling (an addition for heating) for indoor fan motor heat. Specifications R407C PLUS Series Heat Recovery System...
  • Page 35 Return air temperature : 20°C DB, Outdoor temperature : 7°C DB, 6°C WB Equivalent ref. piping : 5m (Horizontal) " 3 Capacities are net, including a deduction for cooling (an addition for heating) for indoor fan motor heat. Specifications R407C PLUS Series Heat Recovery System...
  • Page 36 Return air temperature : 20°C DB, Outdoor temperature : 7°C DB, 6°C WB Equivalent ref. piping : 5m (Horizontal) " 3 Capacities are net, including a deduction for cooling (an addition for heating) for indoor fan motor heat. Specifications R407C PLUS Series Heat Recovery System...
  • Page 37 Return air temperature : 20°C DB, Outdoor temperature : 7°C DB, 6°C WB Equivalent ref. piping : 5m (Horizontal) " 3 Capacities are net, including a deduction for cooling (an addition for heating) for indoor fan motor heat. Specifications R407C PLUS Series Heat Recovery System...
  • Page 38 Return air temperature : 20°C DB, Outdoor temperature : 7°C DB, 6°C WB Equivalent ref. piping : 5m (Horizontal) " 3 Capacities are net, including a deduction for cooling (an addition for heating) for indoor fan motor heat. Specifications R407C PLUS Series Heat Recovery System...
  • Page 39 Return air temperature : 20°C DB, Outdoor temperature : 7°C DB, 6°C WB Equivalent ref. piping : 5m (Horizontal) " 3 Capacities are net, including a deduction for cooling (an addition for heating) for indoor fan motor heat. Specifications R407C PLUS Series Heat Recovery System...
  • Page 40 Return air temperature : 20°C DB, Outdoor temperature : 7°C DB, 6°C WB Equivalent ref. piping : 5m (Horizontal) " 3 Capacities are net, including a deduction for cooling (an addition for heating) for indoor fan motor heat. Specifications R407C PLUS Series Heat Recovery System...
  • Page 41 Specifications Si33-105 Specifications R407C PLUS Series Heat Recovery System...

  • Page 42: Part 3 Function R407C Plus Series Heat Recovery System

    3.5 Protection Control, etc................71 3.6 Oil Return/Defrost Operation..............84 4. Outline of Control (Indoor Unit) .............97 4.1 Drain Pump Control................97 4.2 Louver Control for Preventing Ceiling Dirt..........99 4.3 Thermostat Sensor in Remote Controller..........100 4.4 Freeze Prevention ................102 Function R407C PLUS Seires Heat Recovery System...

  • Page 43: Refrigerant System Diagram

    (SH) control (electronic expansion valve control) Header thermistor 2 R42T Suction pipe thermistor Detect accumulator outlet temperature and protect compressor. Liquid pipe thermistor Detect liquid receiver outlet temperature and judge the Y5S open/close under liquid pressure control. Function R407C PLUS Series Heat Recovery System...
  • Page 44 Si33-105 Refrigerant System Diagram RSEYP16, 18, 20KJY1 Function R407C PLUS Series Heat Recovery System...
  • Page 45 Pressure relief valve to protect liquid sealing in receiver piping during transportation or storing. It opens at 2.65 MPa. Fusible plug Plug head melt at 70~75°C around receiver and high pressure and high temperature refrigerant is relived. Function R407C PLUS Series Heat Recovery System...
  • Page 46 Suction thermistor 3 (Hx. 3) R43T Suction pipe thermistor Detect accumulator outlet temperature and protect compressor. Liquid pipe thermistor Detect liquid receiver outlet temperature and judge the Y5S open/ close under liquid pressure control. Function R407C PLUS Series Heat Recovery System...
  • Page 47 Refrigerant System Diagram Si33-105 RSEYP24, 26, 28, 30KJY1 Function R407C PLUS Series Heat Recovery System...

  • Page 48: Bs Unit Refrigerant System Diagram

    C.Solenoid valve (for drift-prevention injection) Y1S Turns ON only the BS unit of the indoor unit in heating operation when the system is used for simultaneous cooling/heating operations. ∗ Do not replace the valve body Function R407C PLUS Series Heat Recovery System...
  • Page 49 Refrigerant System Diagram Si33-105 BSVP160KJV1 4D014498A BSVP250KJV1 4D014499A Function R407C PLUS Series Heat Recovery System...

  • Page 50: Flow Of Refrigerant In Each Operating Mode

    Si33-105 Refrigerant System Diagram Flow of Refrigerant in Each Operating Mode 1.3.1 Cooling Operation Function R407C PLUS Series Heat Recovery System...
  • Page 51 Refrigerant System Diagram Si33-105 1.3.2 Simultaneous Cooling / Heating Operation Function R407C PLUS Series Heat Recovery System...
  • Page 52 Si33-105 Refrigerant System Diagram 1.3.3 Heating Operation Function R407C PLUS Series Heat Recovery System...
  • Page 53 Refrigerant System Diagram Si33-105 1.3.4 Oil Return Operation-Discharge (at Heating and Simultaneous Cooling / Heating Operation or Defrost Operation) Function R407C PLUS Series Heat Recovery System...
  • Page 54 Si33-105 Refrigerant System Diagram 1.3.5 Oil Return Operation-Suction (at Cooling and Heating and Simultaneous Cooling / Heating Operation or Defrost Operation) Function R407C PLUS Series Heat Recovery System...

  • Page 55: List Of Safety Device And Function Parts Setting Value

    3.5~360kΩ (20kΩ at 25°C) Fuse (A1P) F1U·2U AC250V, 10A Fuse (A3P) AC250V, 10A Fuses Fuse (A4P) — — — AC250V, 10A Fuse (Z1F) F1U·2U AC250V, 5A Fusible Plug Plug head melt at 70~75°C Function R407C PLUS Series Heat Recovery System...

  • Page 56: Indoor Side

    ST8605-6 φ 8 L1250 Thermistor (for Heat Thermistors 20k Ω (25°C) Exchanger High Temp.) ST8602-5 φ 6 L1000 Thermistor (Heat 20k Ω (25°C) Exchanger) Float Switch FS-0211 250V 5A φ 5.2 Others Fuse Transformer TR22M21R8 Function R407C PLUS Series Heat Recovery System...
  • Page 57 Thermistor (for Heat Thermistors 20k Ω (25°C) Exchanger High Temp.) ST8602-6 φ 6 L1250 Thermistor (Heat 20k Ω (25°C) Exchanger) Float Switch FS-0211 250V 10A φ 5.2 Fuse Others Thermal Fuse 109°C 10A Transformer TR22M21R8 Function R407C PLUS Series Heat Recovery System...
  • Page 58 Thermistor (for Heat Thermistors 20k Ω (25°C) Exchanger High Temp.) 20kΩ (25°C) ST8602-8 φ6 L2000 ST8602A-7 φ 6 L1600 Thermistor (Heat 20k Ω (25°C) Exchanger) 20kΩ (25°C) 250V 5A φ 5.2 Fuse Others Transformer TR22M21R8 Function R407C PLUS Series Heat Recovery System...
  • Page 59 Exchanger High Temp.) ST8602-9 φ 6 L2500 Thermistor (for Heat 20k Ω (25°C) Exchanger) Fuse Others Transformer TR22M21R8 2.2.2 BS unit Safety devices MODEL PC board fuse BSVP100KJV1 BSVP160KJV1 250V 5A BSVP250KJV1 250V 5A Function R407C PLUS Series Heat Recovery System...

  • Page 60: Outline Of Control (Outdoor Unit) < Symbols Using In This Manual

    Receiver outlet temperature Trac Accumulator outlet temperature Trev Receiver outlet temperature (liquid) R41T Heat exchanger 1 suction pipe temperature R42T Heat exchanger 2 suction pipe temperature R43T Heat exchanger 3 suction pipe temperature Function R407C PLUS Series Heat Recovery System...

  • Page 61: Malfunction Stop

    10 minutes upon completion of oil return and defrosting, and in each compressor stop. (Same as for other thermistors) Since Ts1, 2 and 3 become discharge side in cooling cycle, they do not detect malfunction. Function R407C PLUS Series Heat Recovery System...
  • Page 62 • In compressor operation • HTdi≥130˚C → •Stops operation when discharge • OR & • HTds1≥130˚C pipe temperature error (F3) is • HTds2≥130˚C • HTdi<115˚C → •Resets malfunction. • HTs1<115˚C • HTs2<115˚C (V2556) Function R407C PLUS Series Heat Recovery System...
  • Page 63 Detects reverse phase → Stops operation by reverse phase (U1) Contents Remarks Detects reverse phase to protect commercial power supply compressor Function R407C PLUS Series Heat Recovery System...

  • Page 64: Standby

    For 30 minutes after the first forced thermostat OFF under the above conditions, forced thermostat OFF is conducted 2 times including the first. Third thermostat OFF is not conducted. After 30 minutes elapsed after the first thermostat OFF, the count turns to 0 repeating this operation. Function R407C PLUS Series Heat Recovery System...
  • Page 65 For 100 minutes after the first forced thermostat OFF under the above conditions, forced thermostat OFF is conducted 2 times including the first. Third thermostat OFF is not conducted. After 100 minutes elapsed after the first, the count turns to 0 repeating this operation. Function R407C PLUS Series Heat Recovery System...
  • Page 66 Contents When Ta(outdoor temperature)>23°C, the unit in heating operation is stopped with forcible thermostat OFF, and resets when Ta<21°C. Function R407C PLUS Series Heat Recovery System...

  • Page 67: Startup Control

    As for mode judgement, modes of the unit in thermostat OFF, stop or fan are ignored. (The judgement should be based on only those of thermostat ON unit.) The condition when power supply turning ON is designated as Condition 1. Function R407C PLUS Series Heat Recovery System...
  • Page 68 41Hz + OFF + (OFF) At the (startup of) pressure equalizing 41Hz + OFF + (OFF) In any cases, fix the frequency in the initial compressor operation step at 41Hz + OFF + (OFF). Function R407C PLUS Series Heat Recovery System...
  • Page 69 Outdoor unit EV full-open conditions Tc>Ta+10 Elapsed time of 10 minutes & Tcg>55deg When condition 1 is met Operates at 52 Hz after operating at 41 Hz for 1 minute. (until PI control is activated in (V0808) Function R407C PLUS Series Heat Recovery System...
  • Page 70 24HP or larger : EV1, Ev2=0pls, EV3=2000pls " Indoor EV control Conducts 200pls instruction to all indoor units EV from 10 seconds before SVP=ON. Note: Refer “Fan Tap Table” Page 96 for fan step detail. Function R407C PLUS Series Heat Recovery System...
  • Page 71 Max. 15 min (including 5 min of restarting standby during unit stops) When HP-LP<0.02 MPa, compressor turns on. Equalization prior to startup 1min 30s 10s 10s Pe<0.03MPa Thermostat ON INV charging BS unit solenoid valve changeover (Max. 16 sec) (V2568) Function R407C PLUS Series Heat Recovery System...
  • Page 72 LL tap instruction is conducted after the startup control ending until the following conditions are met. OR HP>1.47MPa Elapsed time of 4 minutes after startup control ending Compressor stop Activates during preparation of defrosting and oil return operation (V2573) Function R407C PLUS Series Heat Recovery System...
  • Page 73 Solenoid valve Max. 15 min (including 5 min for restarting standby during unit stops) When HP-LP<0.2MPa, compressor turns on. Equalization prior to startup Thermostat BS unit solenoid valve charging changeover (Max. 16 sec) (V2574) Function R407C PLUS Series Heat Recovery System...
  • Page 74 (3HP) or less & •Ta ≥ 30˚C these conditions, maintain the • OR •Ta < 30˚C upper-limit frequency at 29Hz • & + OFF(+OFF) for 2 minutes. •Pc ≥ 23k (56.7˚C) •Pc ≥ 2.37MPa (V2577) Function R407C PLUS Series Heat Recovery System...
  • Page 75 • The magnet contactor of INV compressor OFF Crank case Crank case heater heater OFF • Outdoor air temp. > 30˚C (V0833) Note: STD compressor crankcase heater is controlled previous way. (ON/OFF by magnetic switch) Function R407C PLUS Series Heat Recovery System...

  • Page 76: Capacity Control

    Controls compressor capacity to adjust Tc to achieve target value (TcS) Tc setting (factory setting) Tc: High pressure equivalent saturation temperature (°C) TcS: Target Tc value (Varies depending on Tc setting, operating frequency, etc.) Function R407C PLUS Series Heat Recovery System...
  • Page 77 58Hz 64Hz 64Hz 71Hz 71Hz 16 HP upper 79Hz 41Hz limit 87Hz 52Hz 18, 20 HP 95Hz 64Hz upper limit 24, 26 HP 79Hz upper limit 87Hz 28, 30 HP 95Hz upper limit Function R407C PLUS Series Heat Recovery System...
  • Page 78 The STD compressor does not start for 3 seconds if the STD compressor of another outdoor units starts. [When STD compressor is turned off] The frequency of the inverter compressor changes after the STD compressor stops operation. Function R407C PLUS Series Heat Recovery System...
  • Page 79 ON+OFF control GR/SH H+ON cond 1000pls OFF+OFF OFF control GR/SH H+ON 0pls ON+ON control GR/SH H+ON ON+ON control control Note: GR/SH control: Imaginary refrigerant circulation amount/Super heat degree control : Pc control 500pls(PI) Function R407C PLUS Series Heat Recovery System...
  • Page 80 H+ON ON 0pls ON+ON ON ON+ON OFF control control GR/SH ON+ON OFF H+ON ON control ON+ON ON control control Note: GR/SH control: Imaginary refrigerant circulation amount/Super heat degree control : Pc control 500pls(PI) Function R407C PLUS Series Heat Recovery System...
  • Page 81 2. Remote controller setting judgement is not conducted when operation button is in OFF. " (Returns to operation of stopping unit in the previous mode) 2. During compressor stop Regardless of the indoor unit temperature control and operating state, turns off all solenoid valves. Function R407C PLUS Series Heat Recovery System...

  • Page 82: Protection Control, Etc

    Tfin>87˚C M11F = H / L / OFF M11F = OFF M12F = OFF M12F = ON Tfin<67˚C (V2581) 3. When receiving "Fin temperature drooping signal" from inverter, neglects the low noise input. Function R407C PLUS Series Heat Recovery System...
  • Page 83 GR/SH H+OFF cond 1000pls OFF+OFF OFF control GR/SH H+OFF 0pls OFF+OFF OFF control GR/SH H+OFF ON+OFF control control Note: GR/SH control: Imaginary refrigerant circulation amount/Super heat degree control : Pc control 500pls(PI) Function R407C PLUS Series Heat Recovery System...
  • Page 84 0pls H+OFF ON+OFF OFF+OFF control GR/SH H+OFF 0pls ON+OFF ON+OFF control control GR/SH H+OFF ON+OFF ON+OFF control control control Note: GR/SH control: Imaginary refrigerant circulation amount/Super heat degree control : Pc control 500pls(PI) Function R407C PLUS Series Heat Recovery System...
  • Page 85 [Oil return mode (common for cooling / heating)] LP<0.05MPa SVP (for hot gas SVP (for hot gas bypass) : OFF bypass) : ON LP>0.10MPa (V0822) " 1.Upper limit compressor operation : According to “Drooping step Table”. See next page. Function R407C PLUS Series Heat Recovery System...
  • Page 86 35Hz 37Hz 39Hz 41Hz 43Hz 46Hz 48Hz 52Hz 55Hz 58Hz 62Hz 64Hz 67Hz 71Hz 75Hz 37Hz 41Hz 46Hz 52Hz 58Hz 64Hz 71Hz 79Hz 87Hz 95Hz 25Hz 33Hz 41Hz 52Hz 64Hz 79Hz 87Hz 95Hz Function R407C PLUS Series Heat Recovery System...
  • Page 87 When the drooping of cooling Pc and heating Pe are lowering, the frequency can be decreased with 2 steps. • When the drooping of cooling Pc and heating Pe are rising, the upper limit should be raised every 30 min. Function R407C PLUS Series Heat Recovery System...
  • Page 88 SVTi : ON and defrosting & Defrost operation (V0828) SVTi is ON during oil return and defrost operation. [Oil return operation/defrosting operation] SVTi (Y3S) is OFF at any case when inverter compressor stops. Function R407C PLUS Series Heat Recovery System...
  • Page 89 Normal operation Compressor stop (for 5 min) thermostat OFF within 100 min HTds1, HTds2<105˚C HTdi, HTds1, HTds2>130˚C F3 Malfunction HTdi : Adjusted discharge temperature stop for Inverter Compressor Malfunction reset HTdi<115˚C HTs1, HTs2<115˚C (V0831) Function R407C PLUS Series Heat Recovery System...
  • Page 90 " SVP of turns ON only when heating mode. " The step 1, 2 and 3 will be cancelled when the oil return operation is completed. " Refer p.96 for Fan step table. Function R407C PLUS Series Heat Recovery System...
  • Page 91 When the outdoor temperature is 5°C or lower and Pc<8.0k (Tc<20.0 °C) during cooling operation, starts low outdoor temperature cooling control from Step 3-1 (Fan tap : Step (Does not pass through low outdoor temperature cooling step Function R407C PLUS Series Heat Recovery System...
  • Page 92 (V0820) In this control, the compressor load increase based on PI calculation is conducted once every 2 minutes. The load decrease operation is conducted once every 20 minutes. " Tfin: Inverter fin temperature. Function R407C PLUS Series Heat Recovery System...
  • Page 93 The oil equalization operation is not activated during soft start, oil return operation and defrosting operation (including defrosting operation preparation), and for 10 minutes after the completion of defrosting operation and oil return (heating operation). Function R407C PLUS Series Heat Recovery System...
  • Page 94 79Hz +OFF +OFF RSXYP28KJ RSXYP28KJ 33Hz 33Hz +OFF RSXYP30KJ RSXYP30KJ 33Hz 33Hz +OFF Other protection control functions have precedence over the above operations. " Optional PCB is required for this control. (DTA104A61, 62) Function R407C PLUS Series Heat Recovery System...

  • Page 95: Oil Return/Defrost Operation

    — 24HP 52Hz OFF 41Hz OFF 52Hz 64Hz 41HZ 26HP 52Hz OFF 41Hz OFF 52Hz 64HZ 41Hz 28HP 52Hz OFF 41Hz OFF 52Hz 64HZ 41Hz 30HP 52Hz OFF 41Hz OFF 52Hz 64HZ 41Hz Function R407C PLUS Series Heat Recovery System...
  • Page 96 10 continuous seconds Th7 – Te < 15˚C & 10 continuous seconds 1 minute elapsed Th7 – Te < 2 (V0810-1) Oil return signal only is sent from Outdoor unit. 20RH, 20RT are OFF. (V0810) Function R407C PLUS Series Heat Recovery System...
  • Page 97 5 minutes elapsed from suction oil return operation IN DSHi < 20˚C 10 continuous seconds Th7 – Te < 15˚C 10 continuous seconds & 2 minutes elapsed from suction oil return operation IN (V0811-1) Function R407C PLUS Series Heat Recovery System...
  • Page 98 " The upper limit frequency is restricted to 67Hz+OFF(+OFF) during accumulator discharge operation. " 50pls after 10 sec elapsed until LP<0.3MPa, thereafter, operate with 500 pls. " For 20 sec: H+ON(+ON+ON)/ON+ON → H+ON(+ON+ON)/ON+OFF Function R407C PLUS Series Heat Recovery System...
  • Page 99 (Switching of BS solenoid valve and indoor unit actuator is not conducted.) Regarding four way valve switching control, see “Four way valve switching (startup) control”. And see the next page for the equalizing control. Function R407C PLUS Series Heat Recovery System...
  • Page 100 (Fan mode unit) Indoor fan (Cooling unit) (Fan mode unit) All solenoid According to operation mode valves = OFF BS unit solenoid valve 2min Pe<0.03MPa BS unit solenoid valve changeover (Max. 16 sec) (V2589) Function R407C PLUS Series Heat Recovery System...
  • Page 101 LL tap instruction is conducted after the startup control ending until the following conditions are met. HP>1.47MPa Elapsed time of 4 minutes after startup control ending Compressor stop Activates during preparation of defrosting and oil return operation (V2594) Function R407C PLUS Series Heat Recovery System...
  • Page 102 2. Turns on the liquid injection solenoid valve (SVT) based on Td or DSH. Td : Discharge pipe temperature DSH : Discharge super heat temp. " Liquid injection : Refer to page 77. Note: Note.1 When compressor stops operation at outdoor temperature >1°C, reset cumulating timer. Function R407C PLUS Series Heat Recovery System...
  • Page 103 • Next indoor unit EV opening degree (200 – 2000) is determined based on (Th7 – Te < 15) appearing time in previous defrosting operation 0 minute → +100 Less than 3 minutes → +0 3 minutes or more → –100 " 2 Refer to p.84 . Function R407C PLUS Series Heat Recovery System...
  • Page 104 However, when the compressor stops during a defrosting operation, if condition (Tb > 12.5°C) is not met at the next compressor startup, the defrosting operation starts and a 10-minute counter is activated when the soft startup is completed. Function R407C PLUS Series Heat Recovery System...
  • Page 105 Pump down residual operation starting condition Compressor ON → OFF Compressor ON → OFF & DSHi<20˚C Th7-Te<10 (V2597) " Pump down residual operation ending condition DSHi>90 Th7-Te>10 LP<0.07MPa Tc>48.6˚C Retry·fault 10 minutes (V2598) Function R407C PLUS Series Heat Recovery System...
  • Page 106 Residual operation is not conducted if stop signal received during defrosting and cooling oil return operation. Forcible thermostat OFF is conducted if defrosting or oil return signal is received during residual operation. Normal soft start is conducted if thermostat ON is received during residual operation. Function R407C PLUS Series Heat Recovery System...
  • Page 107 +OFF Tfin > 87°C ↓ ↑ Tfin < 67°C 24~30HP M11F M12F M21F M22F 0’ +OFF +OFF +OFF 1’ +OFF +OFF +OFF 2’ +OFF +OFF +OFF 3’ +OFF +OFF 4’ +OFF +OFF 5’ Function R407C PLUS Series Heat Recovery System...

  • Page 108: Outline Of Control (Indoor Unit)

    1. The objective of residual operation is to completely drain any moisture adhering to the fin of the indoor unit heat exchanger when the thermostat goes off during cooling operation. 4.1.2 When the Float Switch is Tripped During Cooling OFF by Thermostat: Function R407C PLUS Series Heat Recovery System...
  • Page 109 4.1.4 When the Float Switch is Tripped and “AF” is Displayed on the Remote Controller: Note: If the float switch is tripped five times in succession, a drain malfunction is determined to have occurred. “AF” is then displayed as operation continues. Function R407C PLUS Series Heat Recovery System...

  • Page 110: Louver Control For Preventing Ceiling Dirt

    Prohibited position (P1 - 4) Range of direction adjustment Dirt Separated into 5 positions prevention P0'' P1'' P2'' P3'' P4'' Prohibited (P2 - 4) position The factory set position is standard position. (VL012) Function R407C PLUS Series Heat Recovery System...

  • Page 111: Thermostat Sensor In Remote Controller

    Body thermostat sensor is used for temperatures from 30°C to 25°C (F → D). Remote controller thermostat sensor is used for temperatures from 25°C to 21°C (D → B). Body thermostat sensor is used for temperatures from 21°C to 18°C (B → A). Function R407C PLUS Series Heat Recovery System...
  • Page 112 And, assuming suction temperature has changed from 28°C to 18°C (D → A): Remote controller thermostat sensor is used for temperatures from 28°C to 23°C (D → B). Body thermostat sensor is used for temperatures from 23°C to 18°C (B → A). Function R407C PLUS Series Heat Recovery System...

  • Page 113: Freeze Prevention

    -5°C or less for total of 10 min. Conditions for stopping freeze prevention: Temperature is +7°C or more for 10 min. continuously Ex: Case where temperature is -5°C or less for total of 10 min. Function R407C PLUS Series Heat Recovery System...

  • Page 114: Part 4 Test Operation R407C Plus Series Heat Recovery System

    1.9 Additional Refrigerant Charge Operation ..........122 1.10 Refrigerant Recovery Mode ..............123 1.11 Backup and Emergency Operation ............124 1.12 Indoor Field Setting ................126 1.13 Centralized Control Group No. Setting..........132 1.14 Contents of Control Modes..............134 Test Operation R407C PLUS Series Heat Recovery System...

  • Page 115: Test Operation

    For field settings, see setting modes. Set various selectable modes on outdoor unit PC board. Turn on indoor unit power. (VF129) Refer to Setting Modes on P109 Test Operation R407C PLUS Series Heat Recovery System...
  • Page 116 Refer to Wiring Check Operation on P121 Caution When the 400 volt power supply is applyed to "N" phase by mistake, replace Inverter P.C.B (A2P) and control transformer (T1R, T2R) in switch box together. (V0847) Test Operation R407C PLUS Series Heat Recovery System...

  • Page 117: Operation When Power Is Turned On

    Can also be set during operation described above. & Indoor unit ... If ON button is pushed during operation described above, the “UH” or “U4” malfunction indicator blinks. (Returns to normal when automatic setting is complete.) Test Operation R407C PLUS Series Heat Recovery System...

  • Page 118: Outdoor Unit Pc Board Ass'y

    Si33-105 Test Operation Outdoor Unit PC Board Ass’y Outdoor Unit Test Operation R407C PLUS Series Heat Recovery System...
  • Page 119 Capacity setting switch replaced to spare parts PC board. (V0848) Refer table below. RSEYP16KJ RSEYP18KJ RSEYP20KJ RSEYP24KJ RSEYP26KJ RSEYP28KJ RSEYP30KJ Capacity setting table Note: Resetting of power supply switch is necessary after capacity setting. Test Operation R407C PLUS Series Heat Recovery System...

  • Page 120: Setting Modes

    Hold down the MODE Press the MODE (Normal) button for 5 seconds. button once. Monitor mode Setting mode 1 Setting mode 2 MODE MODE Press the MODE MODE button once. Flashing (VL121) Test Operation R407C PLUS Series Heat Recovery System...
  • Page 121 1. If you become unsure of how to proceed, push the MODE button (BS1) and return to setting mode 1. 2. Power reset is not necessary after setting of setting mode 1 (including C/H select SS1) and setting mode 2. Test Operation R407C PLUS Series Heat Recovery System...
  • Page 122 GROUP MASTER (cool/heat selection), ON (low noise), OFF (sequential start) C/H SELECT SEQ. MODE TEST L.N.O.P. START MASTER SLAVE MODE MODE Push and hold for 5 sec. Monitor mode Setting mode 2 (VF133) Test Operation R407C PLUS Series Heat Recovery System...
  • Page 123 Low pressure setting High for cooling. Normal (factory set) TC setting High pressure setting for heating. Note 1 Quick defrost Defrost Temperature setting setting for defrost. Normal (factory set) Slow defrost Note 1 (V0840) Test Operation R407C PLUS Series Heat Recovery System...
  • Page 124 When STD 1 malfunctions compressor malfunctions. Normal operation Refrigerant Additional refrigerant Refrigerant charge charge charge operation. operation operation Normal operation Refrigerant Allows operation of Refrigerant recovery recovery refrigerant recovery. operation Normal operation (V0840-2) Test Operation R407C PLUS Series Heat Recovery System...
  • Page 125 Normal (factory set) TC setting High pressure setting for heating. Note 1 Quick defrost Defrost Temperature setting setting for defrost. Normal (factory set) Slow defrost Note 1 Push 3 times (V0840-1) Test Operation R407C PLUS Series Heat Recovery System...
  • Page 126 Additional refrigerant Refrigerant charge charge charge operation. operation Normal operation operation Refrigerant Allows operation of Refrigerant recovery recovery refrigerant recovery. operation operation Normal operation RETURN BUTTON Initial setting (EMG) SET BUTTON (V0840-3) Test Operation R407C PLUS Series Heat Recovery System...
  • Page 127 ∗ See the following page for a list of the data for No. 1 - 16. (VF135) After making sure the data is correct, push the RETURN button and return to No. 0, or push the MODE button and return to setting mode 1. Test Operation R407C PLUS Series Heat Recovery System...
  • Page 128 # ! ! # # # ! Not used No 14 # ! ! # # # # Not used No 15 # ! # ! ! ! ! Not used No 16 Test Operation R407C PLUS Series Heat Recovery System...

  • Page 129: Sequential Start

    (System 7) (System 6) (System 5) (System 4) (System 3) Power supply Power supply Power supply Power supply RSXY In the case of power supply in the same line (VL123) (8. 10HP outdoor unit) Test Operation R407C PLUS Series Heat Recovery System...

  • Page 130: Low Noise Operation

    Address setting switches (DS1, DS2) Match with outdoor unit low noise operation and demand control address. 3. Short-circuit the low noise input of outdoor unit external control adaptor for outdoor unit. Low Noise Control System Example Test Operation R407C PLUS Series Heat Recovery System...

  • Page 131: Demand Control

    3. Select one from demand input terminals 1 through 3 on the outdoor unit external control adaptor, and short the corresponding terminals. Demand 1 Short 1-C. Demand 2 Short 2-C. Demand 3 Short 3-C. Demand Control System Example Test Operation R407C PLUS Series Heat Recovery System...

  • Page 132: Wiring Check Operation

    If not, it indicates that there is a wiring mistake. Fix the wiring of the indoor unit whose remote controller displays “UF” when its ON/OFF switch is turned ON. Note: Other settings are not accepted during wiring check operation. Test Operation R407C PLUS Series Heat Recovery System...

  • Page 133: Additional Refrigerant Charge Operation

    30 minutes. (When the Confirmation button is pressed during additional refrigerant charge operation, the operation stops.) 5. Disconnect the refrigerant charge hose, then fully open the liquid-side stop valve. Test Operation R407C PLUS Series Heat Recovery System...

  • Page 134: Refrigerant Recovery Mode

    Press the “RETURN” button again to return to initial status. 8 7 7 7 7 7 7 Cancel the setting in the setting mode or cancel the mode by conducting power reset of the outdoor unit. Test Operation R407C PLUS Series Heat Recovery System...

  • Page 135: 1.11 Backup And Emergency Operation

    If OC activates again, only the inverter compressor is used for the operation. (In any case, the backup operation ends after 3 hours.) The compressor in which OC is activated is prohibited to operate until power reset is conducted for a restart. Test Operation R407C PLUS Series Heat Recovery System...

  • Page 136: Emergency Operation

    Push SET button and select LED display to “Emergency Mode”. Push the RETURN button. Push SET button and select LED display as shown right. Push the RETURN button to enter “Emergency Mode”. All indoor units must be thermostat ON. Test Operation R407C PLUS Series Heat Recovery System...

  • Page 137: Indoor Field Setting

    (Example) When setting the filter sign time to “Filter Dirtiness-High” in all group unit setting, set the Mode No. to “10”, Mode setting No. to “0” and setting position No. to “02”. Test Operation R407C PLUS Series Heat Recovery System...
  • Page 138 When setting the filter sign time to "Filter Dirtiness - High" in all group unit setting, set the Mode No. to "17," Mode Setting No. to "0" and Setting Position No. to "02." Test Operation R407C PLUS Series Heat Recovery System...
  • Page 139 No. 4. Pushing the button, select the second code No. 5. Push the timer button and check the settings. 6. Push the button to return to the normal mode. Test Operation R407C PLUS Series Heat Recovery System...
  • Page 140 5. Do not make settings other than those described above. Nothing is displayed for functions the indoor unit is not equipped with. 6. “88” may be displayed to indicate the remote controller is resetting when returning to the normal mode. Test Operation R407C PLUS Series Heat Recovery System...
  • Page 141 Automatic Total heat Normal — — — exchange Fresh up operation — — — — Electric heater setting No delay No delay ON / OFF ON / OFF — — Delay Delay Test Operation R407C PLUS Series Heat Recovery System...
  • Page 142 1. The setting positions are set at “01” at the factory. The ventilation air flow, however, is set at “05” (medium) in the HRV unit. When lower or higher setting is desired, change the setting after installation. Test Operation R407C PLUS Series Heat Recovery System...

  • Page 143: Centralized Control Group No. Setting

    3. Set the group No. for each group with button (advance/backward). 4. Enter the selected group numbers by pushing button. 5. Push button and return to the normal mode. BRC7A Type Test Operation R407C PLUS Series Heat Recovery System...
  • Page 144 When turning the power supply on, the unit may often not accept any operation while "88" is displaying after all indications were displayed once for about 1 minute on the liquid crystal display. This is not an operative fault. Test Operation R407C PLUS Series Heat Recovery System...

  • Page 145: Contents Of Control Modes

    "1." (Unified ON by (Unified OFF by remote remote controller remote controller central remote central remote controller controller) controller) ↓ ↓ ↓ ↓ ↓ Rejection Rejection Rejection Acceptance Acceptance (VL069) Test Operation R407C PLUS Series Heat Recovery System...
  • Page 146 Acceptance Acceptance Rejection Do not select “timer operation possible by remote controller” if not using a remote controller. Operation by timer is impossible in this case. " 1. Factory setting Test Operation R407C PLUS Series Heat Recovery System...
  • Page 147 Test Operation Si33-105 Test Operation R407C PLUS Series Heat Recovery System...

  • Page 148: Part 5 Troubleshooting R407C Plus Series Heat Recovery System

    3.24 Outdoor Unit: Malfunction of Low Pressure Sensor ......180 3.25 Low Pressure Drop Due to Refrigerant Shortage or Electronic Expansion Valve Failure............181 3.26 Reverse Phase, Open Phase...............182 3.27 Malfunction of Transmission Between Indoor Units ......183 Troubleshooting R407C PLUS Series Heat Recovery System...
  • Page 149 8. Troubleshooting (OP: Unified ON/OFF Controller) ......214 8.1 Operation Lamp Blinks .................214 8.2 Display “Under Host Computer Integrate Control” Blinks (Repeats Single Blink)................215 8.3 Display “Under Host Computer Integrate Control” Blinks (Repeats Double Blink) ................217 Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 150: Operation Flowcharts

    " When the auxiliary electric heater is on, the fan stops after one minute residual operation. " When the drain-up kit is ON, it stops after five minutes residual operation. Troubleshooting R407C PLUS Series Heat Recovery System...
  • Page 151 The drain-up kit is standard equipment for models FXYCP, FXYFP, FXYKP and FXYSP. Preset temperature Intake air temperature a = b = 1 (a = b = 0.5 possible for FXYCP, FXYFP, FXYHP, FXYKP only.) Troubleshooting R407C PLUS Series Heat Recovery System...
  • Page 152 When fan operation has been selected using the remote controller, operation is turned OFF by thermostat when temperature control operation has been selected. " 10 Air flow direction setting If fan operation is selected with the remote controller, air discharge is 100% horizontal during heating. Troubleshooting R407C PLUS Series Heat Recovery System...
  • Page 153 Air discharge is 100% horizontal when heating operation is turned off by thermostat. " 13 Hot start Hot start is carried out when operation starts or defrosting is complete, and condenser inlet temperature exceeds 34°C, or 3 minutes elapses, or when Tc > 52°C. Troubleshooting R407C PLUS Series Heat Recovery System...
  • Page 154 Operation Flowcharts " 14. Thermostat status " 15 Low discharge air temperature protection Protection is effected when the preset temperature is 24°C or lower and the opening of the electronic expansion valve is slight. Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 155: Troubleshooting By Remote Controller

    After 10 seconds Following codes can be checked. Test • Malfunction codes Inspection operation Thermostat is forcibly turned on. • Indoor model code mode mode • Outdoor model code Press Inspection/Test Operation (V0815) button once. Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 156: Self-Diagnosis By Wired Remote Controller

    (Even if stop operation is carried out, malfunction contents are displayed when the inspection mode is entered.) The malfunction code enables you to tell what kind of malfunction caused operation to stop. See page 153 for malfunction code and malfunction contents. Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 157: Self-Diagnosis By Wireless Remote Controller

    6. Malfunction code lower digit diagnosis Push the “advance” or “backward” button until the malfunction code matching buzzer sounds continuously, and select the malfunction code lower digit. The lower digit of the code changes as shown below by pushing the “advance” or “backward” button. Troubleshooting R407C PLUS Series Heat Recovery System...
  • Page 158 Si33-105 Troubleshooting by Remote Controller Troubleshooting R407C PLUS Series Heat Recovery System...
  • Page 159 Press the UP or DOWN button and change the malfunction code lower digit until the continuous malfunction code matching buzzer ( " 2) is generated. The lower digit of the code changes as shown below when the UP and DOWN buttons are pressed. Troubleshooting R407C PLUS Series Heat Recovery System...
  • Page 160 Si33-105 Troubleshooting by Remote Controller Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 161: Operation Of The Remote Controller's Inspection / Test Operation Button

    VRV System Inverter K Series RSXYP A A 1 Test operation mode A A 3 R407C VRV PLUS Series RSXYP A 9 3 R407C VRV PLUS Heat recovery Series RSEYP Inspection/test Push the button. operation (VF019) Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 162: Remote Controller Service Mode

    4. Define the setting contents. (Modes 44, 45) Define by pushing the timer button. After defining, LCD “code” changes blinking to ON. 5. Return to the normal operation mode. Push the button one time. Troubleshooting R407C PLUS Series Heat Recovery System...
  • Page 163 Select the unit No. with the button. Present unit No. Set the unit No. after transfer with the button. Unit Code Unit No. after transfer (VE011) This function is not used by VRV System Inverter K Series. Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 164: Remote Controller Self-Diagnosis Function

    When there is a stop due to malfunction, the contents of the malfunction given below can be diagnosed by a combination of operation lamp, INSPECTION display of the liquid crystal display and display of malfunction code. It also lets you know the unit No. during group control. Troubleshooting R407C PLUS Series Heat Recovery System...
  • Page 165 Malfunction of discharge pipe thermistor (R3T) (loose connection, disconnection, short circuit, failure) Malfunction of discharge pipe thermistor (R3T) (loose connection, disconnection, short circuit, failure) Malfunction of thermistor (R4T) for suction pipe (loose connection, disconnection, short circuit, failure) Troubleshooting R407C PLUS Series Heat Recovery System...
  • Page 166 Refrigerant system not set, incompatible wiring / piping Malfunction of system, refrigerant system address undefined The system operates for malfunction codes indicated in black squares, however, be sure to check and repair. Troubleshooting R407C PLUS Series Heat Recovery System...
  • Page 167 In case of the malfunction with the shaded error code, the unit still operates. However, be sure to have it inspected and repaired and as soon as possible. Note: Refer service manual Si71-001 for more detail of heat reclaim ventilation troubleshooting. Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 168: Troubleshooting

    No. 1) has been set to external protection Change the second code No. to device input (second "01" or "02" . code No. 03) by remote controller. Indoor unit PC board replacement. (VF029) Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 169: Indoor Unit: Pc Board Defect

    Turn power supply OFF, then power ON again. Does the system External factor other than return to normal? malfunction (for example, noise etc.). Replace the indoor unit PC board. (V0816) Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 170: Indoor Unit: Malfunction Of Drain Level Control System (33H)

    The voltage of terminals X8S and X9S or X25A is 220~240 V Replace indoor unit PC board. (within 5minutes of resetting the power supply). Replace the drain pump or check for dirt, etc. (VF030) Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 171: Indoor Unit: Fan Motor (M1F) Lock, Overload

    PC board Fix the wiring and turn on again. and fan motor is disconnected. Does the fan motor run? Replace the indoor unit PC board. Replace the fan motor. (VF031) Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 172: Indoor Unit: Malfunction Of Swing Flap Motor (M1S)

    Replace swing motor. motor, operation is normal when turned on again. Take the cam mechanism apart, reassemble and turn on again. (VF032) Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 173: Indoor Unit: Malfunction Of Moving Part Of

    Approx. Approx. 300Ω 150Ω 2. Yellow × × Approx. Approx. 300Ω 150Ω 3. Orange × × Approx. 150Ω 4. Blue × Approx. 150Ω 5. Red × 6. Brown : Continuity ×: No continuity Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 174: Indoor Unit: Drain Level Above Limit

    Modify the drain piping. upward sloping. A humidifier unit (optional accessory) is Check if the humidifier unit is installed on the leaking. indoor unit. Defect of indoor unit PC board. (VF034) Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 175: Indoor Unit: Malfunction Of Capacity Determination Device

    PC board. The indoor unit is a model that requires installation of a capacity setting Replace the indoor unit PC board. adaptor when replacing the PC board. Install a capacity setting adaptor. (VF035) Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 176: Indoor Unit: Malfunction Of Thermistor (R2T) For Liquid Pipe

    PC board. Resistance is normal when measured after disconnecting the thermistor Replace the thermistor (R2T). (R2T) from the indoor unit PC board (3.5kΩ~ 360kΩ) Replace the indoor unit PC board. (VF036) Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 177: Indoor Unit: Malfunction Of Thermistor (R3T) For Gas Pipes

    PC board. Resistance is normal when measured after disconnecting the thermistor Replace the thermistor (R3T). (R3T) from the indoor unit PC board. (0.6kΩ~360kΩ) Replace the indoor unit PC board. (VF037) Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 178: Indoor Unit: Malfunction Of Thermistor (R1T) For Air Inlet

    PC on again. board. Resistance is normal when measured after disconnecting the thermistor Replace the thermistor (R1T). (R1T) from the indoor unit PC board. (7.2kΩ~ 112kΩ) Replace the indoor unit PC board. (VF038) Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 179: In Remote Controller

    Turn power supply OFF, then power ON again. Is "CJ" displayed Replace remote controller. on the remote controller? External factor other than equipment malfunction. (for example, noise etc.) (VF039) Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 180: Outdoor Unit: Actuation Of Safety Device

    1: Actuation of magnet switch OC Defect of compressor Power supply insufficient Defect of magnet switch, etc. " 2: Actuation of fan motor safety thermostat Defect of fan motor Defect of capacitor, etc. Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 181: Outdoor Unit: Pc Board Defect

    Troubleshooting Si33-105 3.14 Outdoor Unit: PC Board Defect Remote Controller Display Supposed Defect of outdoor unit PC board (A1P) Causes Troubleshooting Replace outdoor unit PC board A1P. Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 182: Outdoor Unit: Actuation Of High Pressure Switch

    1: Actuation of high pressure switch (HPS) The outdoor unit PC board’s connector is disconnected. Is the outdoor unit heat exchanger dirty? Defect of outdoor fan Is the refrigerant over-charged? Is the stop valve closed? Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 183: Outdoor Unit: Actuation Of Low Pressure Sensor

    Is the relationship between low voltage and VL normal? Replace the low pressure sensor. (V2735) " 1: Voltage measurement point " 2: Refer to pressure sensor, pressure / voltage characteristics table on P243. Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 184: Electronic Expansion Valve (Y1E)

    × × " 2. Yellow × × 3. Orange × × 4. Blue × 5. Red × 6. Brown : Continuity Approx. 300 Ω " : Continuity Approx. 150 Ω ×: No continuity Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 185: Outdoor Unit: Abnormal Discharge Pipe Temperature

    Defect of the refrigerant system. characteristics of the discharge pipe thermistor normal? Replace the discharge pipe thermistor. (R31T, R32T or R33T) (For the characteristics table.) Replace outdoor unit PC board A1P. (or A3P for 24~30 class) (VF044) Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 186: Outdoor Unit: Malfunction Of Thermistor For Outdoor Air (R1T)

    Replace the thermistor (R1T) (R1T) from the outdoor unit PC board. (3.5kΩ~ 360kΩ) Replace outdoor unit PC board A1P. (VF045) The alarm indicator is displayed when the fan only is being used also. Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 187: Outdoor Unit: Malfunction Of Discharge Pipe Thermistor (R3T)

    A1P or A3P. (VF046) The alarm indicator is displayed when the fan is being used also. Note: 16~20 HP class ··· R31T, R32T (A1P) 24~30 HP class ··· R31T, R32T (A1P), R33T (A3P) Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 188: Outdoor Unit: Malfunction Of Thermistor (R6T) For Suction Pipe

    Replace the thermistor (R6T). (R6T) from the outdoor unit PC board. (3.5kΩ~360kΩ) Replace outdoor unit PC board A1P. (VF047) The alarm indicator is displayed when the fan is being used also. Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 189: Outdoor Unit: Malfunction Of Thermistor (R2T) For Heat Exchanger

    Replace outdoor unit PC board A1P or A3P. (VF048) The alarm indicator is displayed when the fan is being used also. Note: 16~20HP class ··· R21T, R22T (A1P) 24~30HP class ··· R21T, R22T (A1P), R23T (A3P) Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 190: Outdoor Unit: Malfunction Of Discharge Pipe Pressure Sensor

    X22A pins (1) and (3) of A1P. outdoor unit PC board (A1P) (see Replace the high pressure sensor. (VF049) " 1: Voltage measurement point " 2: Refer to pressure sensor, pressure / voltage characteristics table on P243. Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 191: Outdoor Unit: Malfunction Of Low Pressure Sensor

    (2) and (3) of outdoor unit PC board (A1P) (see Replace the low pressure sensor. (VF050) " 1: Voltage measurement point " 2: Refer to pressure sensor, pressure/voltage characteristics table on P243. Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 192: Low Pressure Drop Due To Refrigerant Shortage Or Electronic Expansion Valve Failure

    Resistance is normal when measured with the suction pipe thermistor (R6T) and Replace the thermistor. coil thermistor (R2T) disconnected from the outdoor unit PC board. Replace the outdoor unit PC board (A1P). (VF052) Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 193: Reverse Phase, Open Phase

    Operation is normal if one place Negative phase of power supply line phase is Disposal of the problem is completed replaced. by phase replacement. Replace outdoor unit PC board A1P. (VF053) Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 194: Malfunction Of Transmission Between Indoor Units

    Replace outdoor unit PC board. (A1P) Wait to lamp goes off. indoor - outdoor and outdoor - outdoor unit Fix the indoor/outdoor unit transmission wiring transmission wiring. normal? Replace the outdoor unit PC Board (A1P). (VF054) Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 195: Malfunction Of Transmission Between Remote Controller And Indoor Unit

    Switch to double-core unit remote controller independent cable. transmission replacement wiring. Defect of remote controller PC board or indoor unit PC board. Replace whichever is defective. (VF055) Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 196: Malfunction Of Transmission Between Outdoor Units

    •Does the cool/heat unified address match? Does a malfunction occur when Replace the outdoor unit the cool / heat selector is outside control adaptor. set to "IND"? replacement Replace the outdoor unit PC board (A1P). (VF056) Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 197: Malfunction Of Transmission Between Master And Slave Remote Controllers

    If a malfunction set to "SUB". occurs, replace the remote controller PC board. Set one remote controller to "MAIN"; the power supply off once and then back on. (VF057) Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 198: Malfunction Of Transmission Between Indoor And Outdoor Units In The Same System

    The "U4" display blinks on the remote controllers of other Refer to failure diagnosis for "U5" units within the same malfunction code. refrigerant system. Refer to failure diagnosis for "U4" malfunction code. (VF058) Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 199: Excessive Number Of Indoor Units

    (A1P). (VF059) The number of indoor units that can be connected to a single outdoor unit system depends on the type of outdoor unit. " RSEYP16~20KJY1 ··· 20 units RSEYP24~30KJY1 ··· 32 units Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 200: R22 & R407C Indoor Unit - Mixed Connection

    R22 system. If HFC indoor unit that was operated with R22 system is removed and connected to another HFC system, it can contaminate (SUNISO oil etc.) the newly connected HFC system. Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 201: Address Duplication Of Central Remote Controller

    Address duplication of central connected to the remote controller indoor unit. The setting must be changed so that the central remote control address is not duplicated. Replace indoor unit PC board. (VF060) Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 202: Refrigerant System Not Set, Incompatible Wiring/Piping

    Wiring check may not be successful if carried out after the outdoor unit has been off for more than 12 hours, or if it is not carried out after running all connected indoor units in the fan mode for at least an hour. Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 203: Malfunction Of System, Refrigerant System Address Undefined

    Replace whichever is defective. Normal Does a malfunction occur? Does a "UH" malfunction occur for Replace indoor unit PC board. all indoor units in the system? Replace outdoor unit PC board (A1P). (VF062) Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 204: Failure Diagnosis For Inverter System

    • Open phase Over-ripple • Current/voltage protection — — — — imbalance • Defect of main circuit wiring Defect of Inspect the radiator fin radiator fin — — — — — temperature thermistor. sensor Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 205: How To Use The Monitor Switch On The Inverter Pc Board

    Malfunction contents Retry times Normal Malfunction of fin thermistor Sensor malfunction Insufficient voltage Instantaneous over-current Electronic thermistor Stall prevention Open phase detection Malfunction of microcomputer Unlimited : Blink : On : Off Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 206: Troubleshooting (Inverter)

    • Outdoor temperature is high Characteristic check of the radiator fin Abnormal Replace the thermistor. thermistor (Refer to thermistor characteristics table.) Normal Replace the inverter unit. Is reset possible? Reset and operate. (VF063) Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 207: Outdoor Unit: Inverter Instantaneous Over-Current

    (Note) Must be measured when frequency is stable. There is instantenious power Correct power supply. drop. Compressor inspection Inspect according to the diagnosis procedure for odd noises, vibration and operating status of the compressor. (VF064) Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 208: Outdoor Unit: Inverter Thermostat Sensor, Compressor Overload

    After turning on again, "L8" Reset and restart. blinks again. Compressor inspection Inspect according to the diagnosis procedure for odd noises, vibration and operating status of the compressor. (VF065) Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 209: Outdoor Unit: Inverter Stall Prevention, Compressor Lock

    After turning Reset and restart. on again, "L9" blinks again. Compressor inspection Inspect according to the diagnosis procedure for odd noises, vibration and operating status of the compressor. (VF066) Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 210: Outdoor Unit: Malfunction Of Transmission Between Inverter And Control Pc Board

    Causes Defect of inverter unit Defect of noise filter (NF1) Lack of phase on power supply during outdoor unit operation External factor (Noise etc.) Horse power setting error on outdoor unit PC board Troubleshooting R407C PLUS Series Heat Recovery System...
  • Page 211 220 ~ 240 V (50Hz) When the LC malfunction occur again, replace control PC board. Check the noise filter (Z1F) for disconnection, and check the power supply wiring or the inverter unit. (V2736) Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 212: Power Supply Insufficient Or Instantaneous Failure

    Is 220 ~ 240 V at the connector of X5A of Replace the outdoor outdoor PC board unit PC board. (A1P) side? Check the transmission wiring between the outdoor unit PC board and inverter unit. (VF068) Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 213: Outdoor Unit: Inverter Over-Ripple Protection

    Give the user a copy of "notification of inspection Be sure to explain to the user that there results"and leave it up to him to improve the imbalance. is a "power supply imbalance" for which DAIKIN is not responsible. (VF069) Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 214: Outdoor Unit: Malfunction Of Inverter Radiating Fin Temperature Rise Sensor

    Measure the resistance of radiation fin thermistor. Is the resistance of thermistor Replace radiation fin thermistor. correct? Replace inverter PC board. Is the resetting possible? After resetting, restart. (VF070) Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 215: Troubleshooting (Op: Central Remote Controller)

    Fix the wiring correctly. controller disconnected or wired incorrectly? Is the master controller's connector for setting master Connect the connector controller correctly. disconnected? Replace the central PC board. (VF071) Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 216: Pc Board Defect

    Si33-105 Troubleshooting (OP: Central Remote Controller) PC Board Defect Remote Controller Display Supposed Defect of central remote controller PC board Causes Troubleshooting Replace the central remote controller PC board. Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 217: Malfunction Of Transmission Between Optional Controllers For Centralized Control

    Try turning on/off using each optional controllers for centralized control, and replace the PC board of the one that is unable to control the indoor unit. (VF072) Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 218: Improper Combination Of Optional Controllers For Centralized Control

    The controller connected by the connector for setting master control when the malfunction is cleared is defective and must be replaced. (VF073) Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 219: Address Duplication, Improper Setting

    Disconnect all central remote remote controllers controllers except one and reset connected? the power supply of the central remote controller. Reset power supply of the central remote controller. (VF074) Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 220: Troubleshooting (Op: Schedule Timer)

    Fix the wiring correctly. controller disconnected or wired incorrectly? the master controller's connector for setting master Connect the connector controller correctly. disconnected? Replace the central PC board. (VF075) Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 221: Pc Board Defect

    Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Reset power supply. Does the External factor other than system return to equipment malfunction normal? (noise etc.) Replace the indoor unit PC board. (V0843) Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 222: Malfunction Of Transmission Between Optional Controllers For Centralized Control

    Try turning on/off using each optional controllers for centralized control, and replace the PC board of the one that is unable to control the indoor unit. (VF076) Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 223: Improper Combination Of Optional Controllers For Centralized Control

    The controller connected by the connector for setting master control when the malfunction is cleared is defective and must be replaced. (VF077) Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 224: Address Duplication, Improper Setting

    Are two or more Disconnect all schedule timers schedule timers except one and reset the schedule connected? timer's power supply. Reset the power supply for the schedule timer. (VF078) Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 225: Troubleshooting (Op: Unified On/Off Controller)

    Fix the wiring correctly. controller disconnected or wired incorrectly? Is the master controller's connector for Connect the connector setting master controller correctly. disconnected. Replace the central PC board. (VF079) Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 226: Display "Under Host Computer Integrate Control" Blinks (Repeats Single Blink)

    ON / OFF controllers switch for setting each unified ON / OFF controller's address connected? switch for setting each duplicated? address and reset the power supply of the unified ON / OFF controller. (VF080) Troubleshooting R407C PLUS Series Heat Recovery System...
  • Page 227 The controller connected by the connector for setting master control when the malfunction is cleared is defective and must be replaced. (VF081) Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 228: Display "Under Host Computer Integrate Control" Blinks (Repeats Double Blink)

    Is the transmission Fix the wiring correctly. wiring disconnected or wired incorrectly? Replace the PC board of the unified ON/OFF controller. (VF082) Troubleshooting R407C PLUS Series Heat Recovery System...
  • Page 229 Troubleshooting (OP: Unified ON/OFF Controller) Si33-105 Troubleshooting R407C PLUS Series Heat Recovery System...

  • Page 230: Part 6 Appendix R407C Plus Series Heat Recovery System

    3.3 Pressure Sensor...................243 3.4 Method of Replacing The Inverter’s Power Transistors and Diode Modules ................244 4. Precautions in Servicing The Models with New-type Refrigerant ..246 4.1 Tools Required ..................246 4.2 Notes for Work Procedures ..............247 Appendix R407C PLUS Series Heat Recovery System...

  • Page 231: Piping Diagram

    Piping Diagram Si33-105 1. Piping Diagram Outdoor Unit RSEYP16·18·20KJY1 Appendix R407C PLUS Series Heat Recovery System...
  • Page 232 Si33-105 Piping Diagram RSEYP24·26·28·30KJY1 Appendix R407C PLUS Series Heat Recovery System...

  • Page 233: Bs Unit

    Piping Diagram Si33-105 BS Unit BSVP100KJV1 4D014497A BSVP160KJV1 4D014498A Appendix R407C PLUS Series Heat Recovery System...
  • Page 234 Si33-105 Piping Diagram BSVP250KJV1 4D014499A Appendix R407C PLUS Series Heat Recovery System...

  • Page 235: Indoor Unit

    Piping Diagram Si33-105 Indoor Unit FXYFP, FXYCP, FXYKP, FXYSP, FXYMP, FXYHP, FXYAP, FXYLP, FXYLMP Gas piping connection port Heat exchanger Liquid piping connection port Electronic Filter Filter expansion valve DU220-602D Appendix R407C PLUS Series Heat Recovery System...

  • Page 236: Wiring Diagram

    Si33-105 Wiring Diagram 2. Wiring Diagram Outdoor Unit RSEYP16·18·20KJY1 Appendix R407C PLUS Series Heat Recovery System...
  • Page 237 Wiring Diagram Si33-105 RSEYP24·26·28·30KJY1 Appendix R407C PLUS Series Heat Recovery System...

  • Page 238: Bs Unit

    Si33-105 Wiring Diagram BS Unit Appendix R407C PLUS Series Heat Recovery System...

  • Page 239: Indoor Unit

    Wiring Diagram Si33-105 Indoor Unit FXYFP32·40·50·63·80·125KV1 Appendix R407C PLUS Series Heat Recovery System...
  • Page 240 Si33-105 Wiring Diagram FXYFP32·40·50·63·80·100·125KVE Appendix R407C PLUS Series Heat Recovery System...
  • Page 241 Wiring Diagram Si33-105 FXYCP20·25·32·63KV1 Appendix R407C PLUS Series Heat Recovery System...
  • Page 242 Si33-105 Wiring Diagram FXYCP40·50·80·125KV1 Appendix R407C PLUS Series Heat Recovery System...
  • Page 243 Wiring Diagram Si33-105 FXYKP25·32·40·63KV1 Appendix R407C PLUS Series Heat Recovery System...
  • Page 244 Si33-105 Wiring Diagram FXYSP20·25·32·40·50·63KV1 Appendix R407C PLUS Series Heat Recovery System...
  • Page 245 Wiring Diagram Si33-105 FXYSP80·100·125KV1 Appendix R407C PLUS Series Heat Recovery System...
  • Page 246 Si33-105 Wiring Diagram FXYMP40·50·63·80·100·125KV1 Appendix R407C PLUS Series Heat Recovery System...
  • Page 247 Wiring Diagram Si33-105 FXYMP200·250KV1 Appendix R407C PLUS Series Heat Recovery System...
  • Page 248 Si33-105 Wiring Diagram FXYHP32·63·100KV1 Appendix R407C PLUS Series Heat Recovery System...
  • Page 249 Wiring Diagram Si33-105 FXYAP20·25·32·40·50·63KV1 Appendix R407C PLUS Series Heat Recovery System...
  • Page 250 Si33-105 Wiring Diagram FXYLP20·25·32·40·50·63KV1 FXYLMP20·25·32·40·50·63KV1 Appendix R407C PLUS Series Heat Recovery System...

  • Page 251: Characteristics

    1.80 42.9 48.1 3.10 66.5 70.5 0.85 16.5 22.5 1.85 44.1 49.2 3.20 68.1 72.0 0.90 18.4 24.4 1.90 45.0 50.0 3.30 69.8 73.5 0.95 20.2 26.1 1.95 46.0 50.9 3.40 71.4 75.1 Appendix R407C PLUS Series Heat Recovery System...

  • Page 252: Thermistor Resistance / Temperature Characteristics

    3.21 21.85 21.37 3.16 3.11 20.90 20.45 3.06 3.01 20.00 19.56 2.96 2.91 19.14 18.73 2.86 2.82 18.32 17.93 2.77 2.72 17.54 17.17 2.68 2.64 16.80 16.45 2.60 2.55 16.10 15.76 2.51 2.47 Appendix R407C PLUS Series Heat Recovery System...
  • Page 253 15.31 3.86 3.81 84.38 82.75 15.08 14.85 3.76 3.72 81.16 79.61 14.62 14.40 3.67 3.62 78.09 76.60 14.18 13.97 3.58 3.54 75.14 73.71 13.76 13.55 3.49 3.45 72.32 70.96 13.35 13.15 3.41 3.37 Appendix R407C PLUS Series Heat Recovery System...

  • Page 254: Pressure Sensor

    : Output Voltage [High Side] V : Output Voltage [Low Side] V Detected Pressure (kg/cm²) MPa High Pressure (P 30.6 3.0 25.5 2.5 20.4 2.0 15.3 1.5 Low Pressure (P 10.2 1.0 5.1 0.5 Output Voltage (V (V0818) Appendix R407C PLUS Series Heat Recovery System...

  • Page 255: Method Of Replacing The Inverter's Power Transistors And Diode Modules

    Power Transistor (On Inverter PC Board) (Decision) If other than given above, the power unit is defective and must be replaced. If using a digital tester, ∞ and continuity may be reversed. Note: Appendix R407C PLUS Series Heat Recovery System...
  • Page 256 Si33-105 Characteristics Diode Module (Decision) If other than given above, the diode module is defective and must be replaced. If using a digital tester, ∞ and continuity may be reversed. Note: Appendix R407C PLUS Series Heat Recovery System...

  • Page 257: Precautions In Servicing The Models With New-Type Refrigerant

    Refrigerant recharging Conventional cylinder not allowed because of different refrigerant properties. (Need to weigh with the scale.) Refrigerant Interchangeable. charging scale Gas leak detector Gas leak test Specific detector needed. (R134a-compatible detector allowed.) Appendix R407C PLUS Series Heat Recovery System...

  • Page 258: Notes For Work Procedures

    For servicing the models with the new-type refrigerant, strictly follow the above instructions and precautions. Otherwise the system may get in trouble. For details on handling the new-type refrigerant and the related work procedures and tools, refer to the Installation/Test Run Manual published by Daikin. Appendix R407C PLUS Series Heat Recovery System...
  • Page 259 Precautions in Servicing The Models with New-type Refrigerant Si33-105 Appendix R407C PLUS Series Heat Recovery System...

  • Page 260: Index

    Si33-105 Index Index Index Index Numerics Drain Level above Limit ........163 Drain Pump Control ..........97 4-way valve changeover control Drooping due to Outdoor Temperature ....83 (starting control) ..........62 4-Way Valve Changeover Ensuring Control ..57 E0 ................ 169 E1 ................
  • Page 261 Si33-105 Inverter Protection Control ........79 Malfunction of Thermistor (R3T) for Gas Pipes ... 166 Inverter Stall Prevention, Compressor Lock ..198 Malfunction of Thermistor (R6T) Inverter Thermostat Sensor, Compressor for Suction Pipe ..........177 Overload ............197 Malfunction of Thermistor for Outdoor Air (R1T) ............
  • Page 262 Si33-105 Refrigerant System not Set, Incompatible Wiring/ Piping ............191 Remote Controller Self-Diagnosis Function ..153 Remote Controller Service Mode ......151 Restart Standby .............53 Reverse Phase, Open Phase .......182 Self-diagnosis by Wired Remote Controller ..145 Self-diagnosis by Wireless Remote Controller BRC7A~ Type ..........146 BRC7C ~ Type ..........148 Sequential Start ............118 Setting Contents and Code No.
  • Page 263 Si33-105 Index...

  • Page 264: Drawings & Flow Charts

    Si33-105 Drawings & Flow Charts Drawings & Flow Charts Drawings & Flow Charts Drawings & Flow Charts Numerics When the Float Switch is Tripped While the Cooling Thermostat is ON ....97 4-way valve changeover control Drooping due to Outdoor Temperature ....83 (starting control) ..........62 4-Way Valve Changeover Ensuring Control ..57 Equalizing Startup Control ........
  • Page 265 Si33-105 Inverter Thermostat Sensor, Compressor and Slave Remote Controllers ..... 186 Overload ............197 Malfunction of Transmission Between Optional Controllers for Centralized Control ..206 Malfunction of Transmission Between Liquid Injection Control Outdoor Units ..........185 Cooling and Simultaneous cooling / heating Malfunction of Transmission Between Remote operation ..........77 Controller and Indoor Unit ......
  • Page 266 Si33-105 Self-diagnosis by Wired Remote Controller ..145 Self-diagnosis by Wireless Remote Controller BRC7A~ Type ..........146 BRC7C ~ Type ..........148 Sequential Start ...........118 Service monitor LED (Green) .......108 Setting Items ............112 Setting Mode 1 .............111 Setting Modes Functions of Pushbutton Switches ....109 Mode Change ..........109 Mode Changing Procedure ......110 Standby due to Pc ..........53...
  • Page 267 Head office: Zandvoordestraat 300, B-8400 Oostende, Belgium Umeda Center Bldg., 4-12, Nakazaki-Nishi 2-chome, Kita-ku, Osaka, 530-8323 Japan Tokyo office: Shinjuku Sumitomo Bldg., 6-1 Nishi-Shinjuku 2-chome, Shinjuku-ku, Tokyo, 163-0235 Japan ! For further improvement, specifications or designs are subject to change without prior notice. Printed in Singapore 01/2002 AK...

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