Service Manual
Table Of Contents
- Contents
- 1. General information
- 2. Unit Installation
- 3. Piping work and refrigerant charge
- 4. Electrical wiring
- 4.1 General notes
- 4.2 Electrical wiring connection for the outdoor unit
- 4.3 Setting the DIP switches for the outdoor unit
- 4.4 Common wiring
- 4.5 H-LINK II system
- 4.6 System Control
- 4.7 Electrical wiring diagrams
- 4.7.1 RAS-(2-2.5)HVNP / RAS-3HVNC (1~ 230V 50Hz)
- 4.7.2 RAS-3HVNPE (1~ 230V 50Hz)
- 4.7.3 RAS-(4-6)HVNPE (1~ 230V 50Hz)
- 4.7.4 RAS-(4-6)HNPE (3N~ 400V 50Hz)
- 4.7.5 RAS-(4-6)HVNCE (1N~ 230V 50Hz)
- 4.7.6 RAS-(4-6)HNCE (3N~ 400V 50Hz)
- 4.7.7 RAS-(8-10)HN(P/C)E (3N~ 400V 50Hz)
- 4.7.8 RAS-12HNP (3N~ 400V 50Hz) - Preliminary data
- 4.7.9 RAS-12HNC (3N~ 400V 50Hz) - Preliminary data
- 5. Control System
- 5.1 Device control system
- 5.2 Outdoor units PCB
- 5.3 Protection and safety control
- 5.4 Standard operation sequence
- 5.5 Standard control functions
- 5.5.1 Freezing protection during cooling process or dry operation
- 5.5.2 Prevention Control for High Pressure Increase during Cooling Operation
- 5.5.3 Prevention control for excessively high discharge gas temperature
- 5.5.4 Activation for protection device control
- 5.5.5 Preheating control of compressor
- 5.5.6 Prevention control for high pressure increase
- 6. Optional functions
- 7. Test run
- 7.1 Checking procedure before the test run
- 7.2 Test run procedure using the remote control switch (PC-ART)
- 7.3 Test run procedure using the remote control switch (PC-ARF)
- 7.4 Test run procedure using the wireless remote control switch (PC-LH3A/B)
- 7.5 Test run procedure from the outdoor unit side
- 7.6 Check list
- 8. Troubleshooting
- 8.1 Initial troubleshooting
- 8.2 Troubleshooting procedure
- 8.3 Troubleshooting in check mode
- 8.4 Checking procedure for main parts
- 8.4.1 Procedure for checking the DIP-IPM inverter for indoor and outdoor units
- 8.4.2 Checking capacitors CB1 & CB2.
- 8.4.3 Fault diagnosis of DC fan motor.
- 8.4.4 Checking procedure for the electronic expansion valve for indoor and outdoor units
- 8.4.5 Checking procedure for AC fan motor
- 8.4.6 Checking procedure for other parts
- 9. Spare parts
- 10. Servicing
- 10.1 Introduction
- 10.2 Servicing for Outdoor Units RAS-(2-2.5)HVNP and RAS-3HVNC
- 10.3 Servicing for Premium series
- 10.3.1 Outdoor unit RAS-3HVNPE
- 10.3.1.1 Removing service cover
- 10.3.1.2 Remove outlet grille
- 10.3.1.3 Removing upper cover
- 10.3.1.4 Removing bottom service cover and rear cover
- 10.3.1.5 Removing outdoor fan motor
- 10.3.1.6 Removing electrical box
- 10.3.1.7 Removing the compressor
- 10.3.1.8 Removing the High pressure switch and Pressure switch for control
- 10.3.1.9 Opening electrical box (P plate)
- 10.3.1.10 Removing Reversing valve coil
- 10.3.1.11 Removing electronic expansion valve coil
- 10.3.1.12 Removing solenoid valve coil (SVC)
- 10.3.1.13 Removing reversing valve
- 10.3.1.14 Removing Electronic expansion Valve and Solenoid Valve
- 10.3.1.15 Removing electrical components
- 10.3.1.16 Removing other electrical components
- 10.3.2 Outdoor units RAS-(4-6)H(V)NPE
- 10.3.2.1 Removing service cover
- 10.3.2.2 Removing air outlet grille
- 10.3.2.3 Removing upper cover
- 10.3.2.4 Removing the bottom service cover and rear cover
- 10.3.2.5 Removing outdoor fan motor
- 10.3.2.6 Removing electrical box
- 10.3.2.7 Removing the compressor
- 10.3.2.8 Removing the High pressure switch and Pressure switch for control
- 10.3.2.9 Opening electrical box (P plate)
- 10.3.2.10 Removing Reversing valve coil
- 10.3.2.11 Removing electronic expansion valve coil
- 10.3.2.12 Removing solenoid valve coil (SVA and SVC)
- 10.3.2.13 Removing reversing valve
- 10.3.2.14 Removing Electronic expansion Valve and Solenoid Valve
- 10.3.2.15 Removing electrical components
- 10.3.2.16 Removing other electrical components
- 10.3.3 Oudoor units RAS-(8-10)HNPE
- 10.3.3.1 Removing service cover
- 10.3.3.2 Removing air outlet grille
- 10.3.3.3 Removing upper cover
- 10.3.3.4 Removing the bottom service cover and rear cover
- 10.3.3.5 Removing outdoor fan motor
- 10.3.3.6 Removing electrical box
- 10.3.3.7 Removing the compressor
- 10.3.3.8 Removing High pressure switch and pressure switch for control
- 10.3.3.9 Opening electrical box (P-Mounting Plate)
- 10.3.3.10 Removing reversing valve coil
- 10.3.3.11 Removing electronic expansion valve coil
- 10.3.3.12 Removing solenoid valve coil (SVA and SVC)
- 10.3.3.13 Removing reversing valve
- 10.3.3.14 Removing Electronic expansion Valve and Solenoid Valve
- 10.3.3.15 Removing electrical components
- 10.3.3.16 Removing other electrical components
- 10.3.4 Outdoor Units RAS-12HNP
- 10.3.4.1 Removing service cover
- 10.3.4.2 Removing air outlet grille
- 10.3.4.3 Removing upper cover
- 10.3.4.4 Removing the bottom service cover and rear cover
- 10.3.4.5 Removing outdoor fan motor
- 10.3.4.6 Removing electrical box
- 10.3.4.7 Removing the compressor
- 10.3.4.8 Removing High pressure switch and pressure switch for control
- 10.3.4.9 Removing reversing and solenoid valves coils
- 10.3.4.10 Removing electronic expansion valve coil
- 10.3.4.11 Removing reversing valve
- 10.3.4.12 Removing Electronic expansion Valve and Solenoid Valve
- 10.3.4.13 Removing electrical components
- 10.3.4.14 Removing other electrical components
- 10.3.1 Outdoor unit RAS-3HVNPE
- 10.4 Servicing for Standard Series
- 10.4.1 Outdoor Units RAS-(4-6)H(V)NCE
- 10.4.1.1 Removing service cover
- 10.4.1.2 Remove outlet grille
- 10.4.1.3 Removing upper cover
- 10.4.1.4 Removing bottom service cover and rear cover
- 10.4.1.5 Removing outdoor fan motor
- 10.4.1.6 Removing electrical box
- 10.4.1.7 Removing the compressor
- 10.4.1.8 Removing the High pressure switch and Pressure switch for control
- 10.4.1.9 Opening electrical box (P plate)
- 10.4.1.10 Removing Reversing valve coil
- 10.4.1.11 Removing electronic expansion valve coil
- 10.4.1.12 Removing solenoid valve coil (SVA)
- 10.4.1.13 Removing reversing valve
- 10.4.1.14 Removing Electronic expansion valve and Solenoid valve
- 10.4.1.15 Removing electrical components
- 10.4.1.16 Removing other electrical components
- 10.4.2 Outdoor Units RAS-(8-10)HNCE
- 10.4.2.1 Removing service cover
- 10.4.2.2 Removing air outlet grille
- 10.4.2.3 Removing upper cover
- 10.4.2.4 Removing the bottom service cover and rear cover
- 10.4.2.5 Removing outdoor fan motor
- 10.4.2.6 Removing electrical box
- 10.4.2.7 Removing the compressor
- 10.4.2.8 Removing High pressure switch and pressure switch for control
- 10.4.2.9 Opening electrical box (P-Mounting Plate)
- 10.4.2.10 Removing reversing valve coil
- 10.4.2.11 Removing electronic expansion valve coil
- 10.4.2.12 Removing solenoid valve coil (SVA)
- 10.4.2.13 Removing reversing valve
- 10.4.2.14 Removing Electronic expansion Valve and Solenoid Valve
- 10.4.2.15 Removing electrical components
- 10.4.2.16 Removing other electrical components
- 10.4.3 Outdoor Units RAS-12HNC
- 10.4.3.1 Removing service cover
- 10.4.3.2 Removing air outlet grille
- 10.4.3.3 Removing upper cover
- 10.4.3.4 Removing the bottom service cover and rear cover
- 10.4.3.5 Removing outdoor fan motor
- 10.4.3.6 Removing electrical box
- 10.4.3.7 Removing High pressure switch and pressure switch for control
- 10.4.3.8 Opening electrical box (P-Mounting Plate)
- 10.4.3.9 Removing reversing and solenoid valves coils
- 10.4.3.10 Removing electronic expansion valve coil
- 10.4.3.11 Removing reversing valve
- 10.4.3.12 Removing Electronic expansion Valve and Solenoid Valve
- 10.4.3.13 Removing electrical components
- 10.4.3.14 Removing other electrical components
- 10.4.1 Outdoor Units RAS-(4-6)H(V)NCE
- 11. Electrial checks of main parts
- 12. Maintenance notes
- 12.1 General notes
- 12.1.1 Checking the power source and the wiring connection
- 12.1.2 Burnt-out compressor due to an insufficient refrigerant charge
- 12.1.3 Insufficient cooling performance when a long piping is applied
- 12.1.4 Abnormally high operation sound (in the ceiling type indoor unit).
- 12.1.5 Alarm code “31”
- 12.1.6 Not cooling well due to insufficient installation space for the outdoor unit
- 12.2 Maintenance work
- 12.3 Service and maintenance record
- 12.4 Service and maintenance record using the 7-segment display
- 12.5 Service and maintenance record by remote control switch
- 12.6 Pump-down method for replacing the compressor
- 12.1 General notes
- General information
- Safety
- Product guide
- Safety summary
- Transportation of outdoor unit
- Center of gravity
- Factory-supplied accessories for RAS-12HN(P/C)
- Installation space (Initial ckeck)
- Place provision
- Optional parts and installation
- General notes before performing pipe work
- Piping connection for outdoor unit
- Refrigerant piping range
- Refrigerant charge
- Caution in case of refrigerant leakage
- Piping work for compatibility with the piping of current installations where is used R22 or R407C.
- Drain piping
- General notes
- Electrical wiring connection for the outdoor unit
- Setting the DIP switches for the outdoor unit
- Common wiring
- H-LINK II system
- System Control
- Electrical wiring diagrams
- RAS-(2-2.5)HVNP / RAS-3HVNC (1~ 230V 50Hz)
- RAS-3HVNPE (1~ 230V 50Hz)
- RAS-(4-6)HVNPE (1~ 230V 50Hz)
- RAS-(4-6)HNPE (3N~ 400V 50Hz)
- RAS-(4-6)HVNCE (1N~ 230V 50Hz)
- RAS-(4-6)HNCE (3N~ 400V 50Hz)
- RAS-(8-10)HN(P/C)E (3N~ 400V 50Hz)
- RAS-12HNP (3N~ 400V 50Hz) - Preliminary data
- RAS-12HNC (3N~ 400V 50Hz) - Preliminary data
- Device control system
- Outdoor units PCB
- Protection and safety control
- Standard operation sequence
- Standard control functions
- Freezing protection during cooling process or dry operation
- Prevention Control for High Pressure Increase during Cooling Operation
- Prevention control for excessively high discharge gas temperature
- Activation for protection device control
- Preheating control of compressor
- Prevention control for high pressure increase
- Optional input and output signals (By 7-segment display)
- Optional functions (By 7-segment display)
- Optional functions (By remote control switch)
- Checking procedure before the test run
- Test run procedure using the remote control switch (PC-ART)
- Test run procedure using the remote control switch (PC-ARF)
- Test run procedure using the wireless remote control switch (PC-LH3A/B)
- Test run procedure from the outdoor unit side
- Check list
- Initial troubleshooting
- Troubleshooting procedure
- Troubleshooting in check mode
- Checking procedure for main parts
- RAS-(2-2.5)HVNP
- RAS-3HVNC
- RAS-3HVNPE
- RAS-(4-6)H(V)NPE
- RAS-(4-6)H(V)NCE
- RAS-(8-10)HN(P/C)E
- RAS-12HN(P/C)
- Introduction
- Servicing for Outdoor Units RAS-(2-2.5)HVNP and RAS-3HVNC
- Servicing for Premium series
- Outdoor unit RAS-3HVNPE
- Removing service cover
- Remove outlet grille
- Removing upper cover
- Removing bottom service cover and rear cover
- Removing outdoor fan motor
- Removing electrical box
- Removing the compressor
- Removing the High pressure switch and Pressure switch for control
- Opening electrical box (P plate)
- Removing Reversing valve coil
- Removing electronic expansion valve coil
- Removing solenoid valve coil (SVC)
- Removing reversing valve
- Removing Electronic expansion Valve and Solenoid Valve
- Removing electrical components
- Removing other electrical components
- Outdoor units RAS-(4-6)H(V)NPE
- Removing service cover
- Removing air outlet grille
- Removing upper cover
- Removing the bottom service cover and rear cover
- Removing outdoor fan motor
- Removing electrical box
- Removing the compressor
- Removing the High pressure switch and Pressure switch for control
- Opening electrical box (P plate)
- Removing Reversing valve coil
- Removing electronic expansion valve coil
- Removing solenoid valve coil (SVA and SVC)
- Removing reversing valve
- Removing Electronic expansion Valve and Solenoid Valve
- Removing electrical components
- Removing other electrical components
- Oudoor units RAS-(8-10)HNPE
- Removing service cover
- Removing air outlet grille
- Removing upper cover
- Removing the bottom service cover and rear cover
- Removing outdoor fan motor
- Removing electrical box
- Removing the compressor
- Removing High pressure switch and pressure switch for control
- Opening electrical box (P-Mounting Plate)
- Removing reversing valve coil
- Removing electronic expansion valve coil
- Removing solenoid valve coil (SVA and SVC)
- Removing reversing valve
- Removing Electronic expansion Valve and Solenoid Valve
- Removing electrical components
- Removing other electrical components
- Outdoor Units RAS-12HNP
- Removing service cover
- Removing air outlet grille
- Removing upper cover
- Removing the bottom service cover and rear cover
- Removing outdoor fan motor
- Removing electrical box
- Removing the compressor
- Removing High pressure switch and pressure switch for control
- Removing reversing and solenoid valves coils
- Removing electronic expansion valve coil
- Removing reversing valve
- Removing Electronic expansion Valve and Solenoid Valve
- Removing electrical components
- Removing other electrical components
- Outdoor unit RAS-3HVNPE
- Servicing for Standard Series
- Outdoor Units RAS-(4-6)H(V)NCE
- Removing service cover
- Remove outlet grille
- Removing upper cover
- Removing bottom service cover and rear cover
- Removing outdoor fan motor
- Removing electrical box
- Removing the compressor
- Removing the High pressure switch and Pressure switch for control
- Opening electrical box (P plate)
- Removing Reversing valve coil
- Removing electronic expansion valve coil
- Removing solenoid valve coil (SVA)
- Removing reversing valve
- Removing Electronic expansion valve and Solenoid valve
- Removing electrical components
- Removing other electrical components
- Outdoor Units RAS-(8-10)HNCE
- Removing service cover
- Removing air outlet grille
- Removing upper cover
- Removing the bottom service cover and rear cover
- Removing outdoor fan motor
- Removing electrical box
- Removing the compressor
- Removing High pressure switch and pressure switch for control
- Opening electrical box (P-Mounting Plate)
- Removing reversing valve coil
- Removing electronic expansion valve coil
- Removing solenoid valve coil (SVA)
- Removing reversing valve
- Removing Electronic expansion Valve and Solenoid Valve
- Removing electrical components
- Removing other electrical components
- Outdoor Units RAS-12HNC
- Removing service cover
- Removing air outlet grille
- Removing upper cover
- Removing the bottom service cover and rear cover
- Removing outdoor fan motor
- Removing electrical box
- Removing High pressure switch and pressure switch for control
- Opening electrical box (P-Mounting Plate)
- Removing reversing and solenoid valves coils
- Removing electronic expansion valve coil
- Removing reversing valve
- Removing Electronic expansion Valve and Solenoid Valve
- Removing electrical components
- Removing other electrical components
- Outdoor Units RAS-(4-6)H(V)NCE
- Inverter
- Thermistor
- Electronic expansion valve
- High pressure protection device
- Noise filter (NF)
- Capacitor (CB1 CB2)
- Reactor (DCL)
- Scroll compressor
- General notes
- Checking the power source and the wiring connection
- Burnt-out compressor due to an insufficient refrigerant charge
- Insufficient cooling performance when a long piping is applied
- Abnormally high operation sound (in the ceiling type indoor unit).
- Alarm code “31”
- Not cooling well due to insufficient installation space for the outdoor unit
- Maintenance work
- Service and maintenance record
- Service and maintenance record using the 7-segment display
- Service and maintenance record by remote control switch
- Pump-down method for replacing the compressor
10. Servicing
401
SMGB0079 rev.0 - 01/2013
10
10.4.1.8 Removing the High pressure switch and Pressure switch for control
RAS-4H(V)NCE
1 Remove the service cover and the bottom service cover following Removing service cover, and Removing bottom
service cover and rear cover.
2 Collect the refrigerant from the check joint according to Removing the compressor, in this chapter.
3 Remove the soundproof cover on the compressor.
4 Disconnect the Faston Terminals of High Pressure Switch and Pressure sensor for PD control.
5 Remove the high pressure switch and the pressure switch for control from the brazed part of discharge piping.
Discharge pipe
Electrical Box
Upper cover
High pressure
switch
Pressure sensor
for PD control
Brazing
part
RAS-(5-6)H(V)NCE
1 Remove the service cover, the bottom service cover and rear cover following Removing service cover and Removing
bottom service cover and rear cover.
2 Collect the refrigerant from the check joint according to Removing the compressor, in this chapter.
3 Remove the soundproof cover on the compressor.
4 Disconnect the Faston Terminals of High
Pressure Switch and Pressure sensor for PD
control.
5 Remove the high pressure switch and the
pressure switch for control from the brazed
part of discharge piping.
N O T E
Bewarethecoverscrewsdonotdamagethe
wirings when performing the procedure in
reverseway.
Electrical Box
Upper cover