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
7. Test run
173
SMGB0079 rev.0 - 01/2013
7
b.
Select “Test Run” and press “OK”. The test run settings will be
displayed.
Test Run Setting: 2 units
MODE
SPEED
MED
LOUV.
SEL. ADJ
T-RUN TIME
120MIN
COOL
RTN.RUN
NOTE
When “00” is indicated, the auto-address function may be performing.
Cancel “Test Run” mode and set it again.
Test Run Setting: 00 unit
MODE
SPEED
MED
LOUV.
SEL. ADJ
T-RUN TIME
120MIN
COOL
RTN.RUN
4
The total number of the indoor units connected is indicated
on the LCD (liquid crystal display). The case of the twin
combination (one (1) set with two (2) indoor units) is
indicated “2 units”, and the triple combination (one (1) set
with three (3) indoor units) is indicated “3 units”.
Test Run Setting: 2 units
MODE
SPEED
MED
LOUV.
SEL. ADJ
T-RUN TIME
120MIN
COOL
RTN.RUN
c.
If the indicated number is not equal to the actual connected number of indoor unit, the auto-address function is not
performed correctly due to incorrect wiring, the electric noise or etc. Turn OFF the power supply and correct the
wiring after checking the following points; (Do not repeat turning ON and OFF within 10 seconds.)
-
Power supply for indoor unit is not turned ON or incorrect wiring.
-
Incorrect connectionn of connecting cable between indoor u nits or incorrect connection of controller cable.
-
Incorrect setting of rotary switch and dip switch (the setting is overlapped) on the indoor units PCB.
d.
Press “
” (run/stop) to start the test run.
e.
Press “
” and set each item.
5
Press “
” (run/stop). Start the test run when indicatin
the air flow volume “HIGH” (default setting) and light the
operation lamp. At this time, 2-hour OFF timmer will be set
automatically..
Test Run: 2 units
MODE
SPEED
HIGH
LOUV.
SEL. ADJ
T-RUN TIME
120MIN
STOP
COOL
6
Press “ ” or “ ”, select “LOUV.” and select “ ” (auto
swing) by pressing “
” or “ ”. The auto swing operation
will be started. Check the operating sound at the louvers. If
abnormal sound is not generated, press “
” or “ ” again to
stop the auto swing operation.
Test Run: 2 units
MODE
SPEED
HIGH
LOUV.
SEL. ADJ
T-RUN TIME
120MIN
STOP
COOL
7
The temperature detections by the thermistors are invalid though the protection devices are valid during the test run.
8
For SET-FREE Series: According to the label “Checking of Outdoor Unit by 7-Segment Display on PCB1” attached
to the rear side of the front cover of the outdoor unit, check temperature, pressure and the operation frequency, and
connected indoor unit numbers by 7-segment displays.