ICP DLF4AH09J1A Service Manual
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ICP DLF4AH09J1A Service Manual

ICP DLF4AH09J1A Service Manual

R−410a ductless split system air conditioner and heat pump sizes: 9k, 12k, 18k, 24k, 30k, and 36k
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R−410A Ductless Split System
Air Conditioner and Heat Pump
MODELS: DLC4(A/H)−Outdoor, DLF4(A/H)−Indoor

INTRODUCTION

This Service Manual provides the necessary information to
service, repair, and maintain the DLF4(A,H), DLC4(A/H)

TABLE OF CONTENTS

SAFETY CONSIDERATIONS

SPECIFICATIONS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MODEL / SERIAL NUMBER NOMENCLATURE
DIMENSIONS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SYSTEM OPERATING ENVELOPE
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REFRIGERATION SYSTEM DIAGRAM
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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MALFUNCTION ANALYSIS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SAFETY CONSIDERATIONS
Installing, starting up, and servicing air−conditioning
equipment can be hazardous due to system pressures,
electrical components, and equipment location (roofs,
elevated structures, etc.).
Only trained, qualified installers and service mechanics
should install, start−up, and service this equipment.
Untrained personnel can perform basic maintenance
functions such as cleaning coils. All other operations should
be performed by trained service personnel.
When working on the equipment, observe precautions in the
literature and on tags, stickers, and labels attached to the
equipment.
SERVICE MANUAL
SIZES: 9K, 12K, 18K, 24K, 30K, and 36K
PAGE
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Follow all safety codes. Wear safety glasses and work
gloves. Keep quenching cloth and fire extinguisher nearby
when brazing. Use care in handling, rigging, and setting
bulky equipment.
Read these instructions thoroughly and follow all warnings
or cautions included in literature and attached to the unit.
1
Consult local building codes and National Electrical Code
2
(NEC) for special requirements. In Canada, refer to current
16
editions of the Canadian Electrical Code, CSA 22.1.
Recognize safety information. This is the safety−alert
17
symbol
!
. When you see this symbol on the unit and in
!
18
instructions or manuals, be alert to the potential for personal
22
injury.Understand
23
WARNING, and CAUTION. These words are used with the
safety−alert symbol. DANGER identifies the most serious
25
hazards which will result in severe personal injury or death.
26
WARNING signifies hazards which could result in personal
injury or death.
27
practices which may result in minor personal injury or
36
product and property damage. NOTE is used to highlight
38
suggestions which will result in enhanced installation,
reliability, or operation.
39
40
!
44
ELECTRICAL SHOCK HAZARD
47
Failure to follow this warning could result in personal
48
injury or death.
55
Before installing, modifying, or servicing system, main
79
electrical disconnect switch must be in the OFF
position. There may be more than 1 disconnect switch.
Lock out and tag switch with a suitable warning label.
!
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
Do not bury more than 36 in. (914 mm) of refrigerant
pipe in the ground. If any section of pipe is buried, there
must be a 6 in. (152 mm) vertical rise to the valve
connections on the outdoor units. If more than the
recommended length is buried, refrigerant may migrate
to the cooler buried section during extended periods of
system shutdown. This causes refrigerant slugging and
could possibly damage the compressor at start−up.
these
signal
words:
CAUTION is used to identify unsafe
WARNING
CAUTION
421 01 9204 00
DANGER,
1/03/13

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Summary of Contents for ICP DLF4AH09J1A

  • Page 1 SERVICE MANUAL R−410A Ductless Split System Air Conditioner and Heat Pump MODELS: DLC4(A/H)−Outdoor, DLF4(A/H)−Indoor SIZES: 9K, 12K, 18K, 24K, 30K, and 36K INTRODUCTION This Service Manual provides the necessary information to Follow all safety codes. Wear safety glasses and work service, repair, and maintain the DLF4(A,H), DLC4(A/H) gloves.

  • Page 2: Product Specifications

    SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) PRODUCT SPECIFICATIONS Model − Indoor Unit DLF4AH09J1A DLF4HH09J1A Function Cooling Cooling Heating Rated Voltage 115V 115V High Frequency Standard (Inverter different Compressor speed) High W/Btuh 3100 / 10600 3100 / 10600 3250 / 11100...
  • Page 3 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) PRODUCT SPECIFICATIONS (Cont.) Model − Outdoor Unit DLF4AV09J1A DLF4HV09J1A Manufacturer Sanyo Sanyo Model C−6RZ110H1A C−6RZ110H1A Type Twin Rotary Twin Rotary L.R.A. Compressor R.L.A. 4.59 / 2.81 4.59 / 2.81 Power Input 775 / 735 775 / 735 Overload Protectorr Int11I−3979...
  • Page 4 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) PRODUCT SPECIFICATIONS Model − Indoor Unit DLF4AH12J1A DLF4HH12J1A Function Cooling Cooling Heating Rated Voltage 115V 115V High Frequency Standard (Inverter different Compressor speed) High W/Btuh 3100 / 10600 3100 / 10600 3250 / 11100 Total Capacity Standard W/Btuh...
  • Page 5 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) PRODUCT SPECIFICATIONS (Cont.) Model − Outdoor Unit DLC4AV12J1A DLC4HV12J1A Manufacturer Sanyo Sanyo Model C−6RZ110H1A C−6RZ110H1A Type Twin Rotary Twin Rotary L.R.A. Compressor R.L.A. 4.59 / 2.81 4.59 / 2.81 Power Input 775 / 735 775 / 735 Overload Protectorr Int11I−3979...
  • Page 6 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) PRODUCT SPECIFICATIONS (Cont.) Model DLC4AV12K1A DLC4HV12K1A Rated Voltage 208/230 208/230 Power Rated Frequency Supply Phases Power Supply Mode Outdoor Outdoor Cooling Capacity (Min − Max) Btu/h 12000 (3100−13000) 12000 (3100−13000) Heating Capacity (Min. − Max) Btu/h 13000 (2400−14000) Cooling Power Input (Min.
  • Page 7 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) PRODUCT SPECIFICATIONS (Cont.) Model − Outdoor Unit DLC4AV12K1A DLC4HV12K1A Manufacturer Mitsubishi Mitsubishi Model KNB092FTAMC KNB092FTAMC FV50S FV50S Type Rotary Rotary Compressor L.R.A. 13.8 13.8 R.L.A. Power Input Overload Protector INT11L−6578 INT11L−6578 Throttling Method Electronic Expansion Valve Electronic Expansion Valve Set Temperature Range...
  • Page 8 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) PRODUCT SPECIFICATIONS (Cont.) Model DLC4AV18K1A DLC4HV18K1A Rated Voltage 208/230 208/230 Power Rated Frequency Supply Phases Power Supply Mode Outdoor Outdoor Cooling Capacity (Min − Max) Btu/h 18000 (5970−22350) 18000 (5970−22350) Heating Capacity (Min. − Max) Btu/h 19800 (4100−22000) Cooling Power Input (Min.
  • Page 9 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) PRODUCT SPECIFICATIONS (Cont.) Model − Outdoor Unit DLC4AV18K1A DLC4HV18K1A Manufacturer Mitsubishi Mitsubishi Model SNB130FGAMC SNB130FGAMC FV50S−PVE FV50S−PVE Type Rotary Rotary Compressor L.R.A. 13.8 13.8 R.L.A. Power Input 1200 1200 Overload Protector INT11L−6578 INT11L−6578 Throttling Method Electronic Expansion Valve...
  • Page 10 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) PRODUCT SPECIFICATIONS (Cont.) Model DLC4AV24K1A DLC4HV24K1A Rated Voltage 208/230 208/230 Power Rated Frequency Supply Phases Power Supply Mode Outdoor Outdoor Cooling Capacity (Min − Max) Btu/h 21400 (9600−25000) 21400 (9600−25000) Heating Capacity (Min. − Max) Btu/h 23000 (4300−26000) Cooling Power Input (Min.
  • Page 11 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) PRODUCT SPECIFICATIONS (Cont.) Model − Outdoor Unit DLC4AV24K1A DLC4HV24K1A Manufacturer Mitsubishi Mitsubishi Model SNB150FGAMC SNB150FGAMC FV50S−PVE FV50S−PVE Type Rotary Rotary Compressor L.R.A. 18.5 18.5 R.L.A. Power Input 1420 1420 Overload Protector INT11L−6578 INT11L−6578 Throttling Method Electronic Expansion Valve...
  • Page 12 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) PRODUCT SPECIFICATIONS (Cont.) Model DLF4HH30K1A DLF4HH36K1A Rated Voltage 208/230 208/230 Power Rated Frequency Supply Phases Power Supply Mode Outdoor Outdoor Cooling Capacity (Min − Max) Btu/h 28000 (9500−30000) 33600 (7400−36000) Heating Capacity (Min. − Max) Btu/h 28400 (10000−33000) 34600 (1500−36000)
  • Page 13 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) PRODUCT SPECIFICATIONS (Cont.) Model − Outdoor Unit DLC4HV30K1A DLC4HV36K1A Manufacturer Zhuhai Landa Mitsubishi Model QXAS−D23ZX090 TNB306FPGMCMC PVE (FV50S) FV50S Type Rotary Rotary Compressor L.R.A. R.L.A. 13.5 Power Input 2450 3010 Overload Protector INT11L−6233 CS01F272H01 Throttling Method...
  • Page 14 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) PRODUCT SPECIFICATIONS (Cont.) Model DLF4AH36K1A Rated Voltage 208/230 Power Rated Frequency Supply Phases Power Supply Mode Outdoor Cooling Capacity (Min − Max) Btu/h 33600 (7400−36000) Heating Capacity (Min. − Max) Btu/h Cooling Power Input (Min. − Max.) 3650 (410−3800) Heating Power Input (Min.
  • Page 15 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) PRODUCT SPECIFICATIONS (Cont.) Model − Outdoor Unit DLC4AV36K1A Manufacturer Mitsubishi Model TNB306FPGMCMC FV50S Type Rotary Compressor L.R.A. R.L.A. 13.5 Power Input 3010 Overload Protector CS01F272H01 Throttling Method Capillary Set Temperature Range °F 61 ~ 86 Cooling Operation Ambient Temperature Range 5 ~ 109.0...

  • Page 16: Model Nomenclature

    SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) MODEL NOMENCLATURE MODEL SERIES Position Number DLC = Outdoor DLF = Indoor Outdoor/Indoor 4AV = AC Outdoor 4AH = AC Indoor 4HV = HP Outdoor 4HH = HP Indoor Type 09 = 9k BTU 12 = 12k BTU 18 = 18k BTU 24 = 24k BTU...

  • Page 17: Standard Features And Accessories

    SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) STANDARD FEATURES AND ACCESSORIES Condensate Pump Ease of Operation 16’ Transparent Assembly Suction Discharge Tubing Mounting Brackets Low Voltage Connections Low Voltage Power Cord Comfort Features Microprocessor Controls Wireless Remote Control Rapid Cooling/Heating Automatic Air Sweep Cold Blow Prevention Continuous Fan...
  • Page 18 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) DIMENSIONS − INDOOR A12377 Net Operating Weight Unit Size In. (mm) In. (mm) In. (mm) Lbs. (Kg) 33.3 (846) 10.7 (272) 7.1 (180) 29 (13) 33.3 (846) 10.7 (272) 7.1 (180) 29 (13) 37.0 (940) 11.7 (297) 7.9 (201)
  • Page 19 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) DIMENSIONS − OUTDOOR UNIT SIZE − 09 (Net Operating Weight: 96 lbs.- 44 kg.) A12380 UNIT SIZE − 12 (Net Operating Weight: 107 lbs.- 49 kg.) (254.0) (762.0)) 33.4 12.6 (848.4) (320.0) in.
  • Page 20 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) UNIT SIZE − 18 (Net Operating Weight: 99 lbs.- 45 kg.) 13.4 (340.4) (889.0) 15.6 37.6 (396.2) (955.0) in. (mm) (558.8) A12382 UNIT SIZE − 24 (Net Operating Weight: 121 lbs.- 55 kg.) 14.6 (914.4) (368.3)
  • Page 21 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) UNIT SIZE − 30 (Net Operating Weight: 154 lbs − 70 kg.) 36 (Net Operating Weight: 161 lbs − 73 kg.) 14.6 (914.4) (370.8) 16.7 38.6 (980.4) (424.2) (609.6) in. (mm) A12379 421 08 9204 00...
  • Page 22 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) CLEARANCES Indoor Unit Distance to Ceiling 6” (152 mm) Distance to Wall Distance to Wall 6” (152 mm) 6” (152 mm) NOTE: Refrigerant lines may be routed in any of the (4) directions, right, right rear, left, or left rear.
  • Page 23 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) SYSTEM OPERATING ENVELOPES Supply Voltage 115-1-60 AC 208/230-1-60 AC Model Size Indoor Operating Range (A/C and HP) °F (°C) 61 - 86 (16 - 30) 55 - 115 55 - 115 5 - 109 5 - 109 5 - 109 64 - 109...
  • Page 24 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) SYSTEM OPERATING ENVELOPES (CONT.) Figure 5 - 18k, 24k, and 30k 230V System Operating Envelopes Figure 6 - 36k 230V System Operating Envelopes 421 08 9204 00...

  • Page 25: Electrical Data

    SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) ELECTRICAL DATA Table 2 − Accessory Condensate Pump Kit Contents Electrical Data Table Compressor Outdoor Fan Indoor Fan Operating Fuse/CB Voltage Unit System Voltage Output Output Amps (Min/Max) (MOCP) Size Volts−Ph.−Freq. Watts Volts Watts 115−1−60...

  • Page 26: Service Manual

    SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) CONNECTION DIAGRAMS DLC4/DLF4 9K − 12K, 115−1−60 Connection Diagram Connecting Cable Outdoor to Indoor Use Copper Conductors Only With Minimum 300 Volt, 2/64” Thick Insulation Power to Control to Power to Main Main Power Control...
  • Page 27 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) WIRING DIAGRAMS (CONT. Symbol Color Symbol Symbol Parts Name Orange Protective Earth White COMP Compressor Yellow CT1,2 Overload 4−Way Valve YEGN Yellow Green Terminal Block Brown Blue Black Size 9k and 12k, 115V, Indoor Unit 421 08 9204 00...
  • Page 28 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) WIRING DIAGRAMS (CONT. Size 9k and 12k, 115V, AC Outdoor Unit Size 9k and 12k, 115V, HP Outdoor Unit 421 08 9204 00...
  • Page 29 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) WIRING DIAGRAMS (CONT. Size 12k and 18k, 230V, Indoor Unit 421 08 9204 00...
  • Page 30 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) WIRING DIAGRAMS (CONT. Size 24k, 230V, Indoor Unit Size 12k, 230V, Outdoor Unit 421 08 9204 00...
  • Page 31 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) WIRING DIAGRAMS (CONT. Size 18k, 230V, AC, Outdoor Unit Size 18k, 230V, HP, Outdoor Unit 421 08 9204 00...
  • Page 32 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) WIRING DIAGRAMS (CONT. Size 24k, 230V, AC, Outdoor Unit Size 24k, 230V, HP, Outdoor Unit 421 08 9204 00...
  • Page 33 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) WIRING DIAGRAMS (CONT. Size 30k & 36k, 230V, AC & HP, Indoor Unit 421 08 9204 00...
  • Page 34 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) WIRING DIAGRAMS (CONT. Size30k, 230V, HP, Outdoor Unit Size 36k, 230V, AC, Outdoor Unit 421 08 9204 00...
  • Page 35 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) WIRING DIAGRAMS (CONT. Size36k, 230V, HP, Outdoor Unit 421 08 9204 00...
  • Page 36 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) REFRIGERANT SYSTEM DIAGRAM Cooling Only Models Size 9k, 12k, 115V and Size 12k 18k, 24k 230 V Cooling and Heating Models Size 12k, 115V and Size 12k 18k, 24k 230 V Figure 8 - Refrigerant System Diagrams 421 01 9204 00...
  • Page 37 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) REFRIGERANT SYSTEM DIAGRAM Cooling Only Models Size 36k 230 V Cooling and Heating Models Size 30k, 36k 230 V Refrigerant pipe diameter Liquid: ¼” Gas: ⅝” Figure 9 - Refrigerant System Diagrams 421 08 9204 00...
  • Page 38 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) REFRIGERANT LINES Hole SIZES Unit Size Hole Diameter, In. (mm) Refrigerant Line Routing 9K, 12K, 18K 2.2 (56) The refrigerant lines may be routed in any of the four directions 24K, 30K, 36K 2.8 (71) shown in Figure 4.
  • Page 39 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) Deep Vacuum Method CAUTION The deep vacuum method requires a vacuum pump capable of pulling a vacuum of 500 microns and a vacuum gage capable of UNIT DAMAGE HAZARD accurately measuring this vacuum depth. The deep vacuum Failure to follow this caution may result in equipment method is the most positive way of assuring a system is free of damage or improper operation.
  • Page 40 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) Remote Control and Functions Remote Control, Size 09-24 1. Remote Control Display 2. ON/OFF Button 3. MODE Button 4. Setpoint Clock, Timer Up (+) and Down (-) Buttons 5. Fan Speed 6. Horizontal Louver Swing Button 7.
  • Page 41 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) Remote Control Display, Size 09−24 MODE DISPLAY AUTO COOL HEAT A12391 NOTE: Symbols shown in this manual are for the purpose of demonstration. During actual operation, only the relevant symbols are displayed. TRANSMISSION INDICATOR: Illuminates when remote control TIMER ON / TIMER OFF DISPLAY: ON is displayed if TIMER ON transmits signals to the indoor unit.
  • Page 42 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) Remote Control Display, Size 30−36 MODE DISPLAY AUTO COOL HEAT SLEEP NOTE: Symbols shown in this manual are for the purpose of demonstration. During actual operation, only the relevant symbols are displayed. TRANSMISSION INDICATOR: Illuminates when remote control Left/Right Louver Swing: Not available on these models.
  • Page 43 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) Function and Controls Description of Each Control Operation PROTECTION Temperature Parameters Antifreeze Protection zIndoor preset temperature (T preset Under cooling and dehumidifying mode, 6 minutes after the zIndoor ambient temperature (T compressor is started: Basic Functions If T v35.6°F, the compressor will operate at reduced...
  • Page 44 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) < 14°F 23°F temperature is 77°F; if T −3.6°F, the compressor will outer amb outer tube compensatorys outdoor − preset stop, the outdoor fan will stop with a time lag of 1 minute, and the 5.4°F) amb.
  • Page 45 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) the controller is off, it will start when the button is pressed. The Overload protection swing light will be on, and the main unit will run based on the If temperature sensed by the overload sensor is over 239°F, the remote controls current settings.
  • Page 46 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) heating Input Current Control (12) Drying Function Detects an input current with the current transformer as the You may start or stop the dry function under the cooling and dry compressor is running, and sets the upper frequency limit from modes.
  • Page 47 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) Troubleshooting * Static maintenance is maintenance during de−energization of the air conditioner. For static maintenance, make sure that the unit is de−energized Precautions for Performing Inspections and Repairs and the plug is disconnected. Be cautious during installation and maintenance.

  • Page 48: Troubleshooting

    SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) TROUBLESHOOTING The unit has onboard diagnostics. Error codes will appear on the LED display on the front panel of the indoor unit in place of the temperature display. Error codes are also displayed on the outdoor unit microprocessor board with colored LED lights. The tables explain the error codes for the specific models.
  • Page 49 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) UNIT 12K, 230 Volts Indoor Unit Displaying Method Double 8 Code Indicator Display State of lamps of outdoor unit Display (LED Flash 0.5s−ON/0.5s−OFF Error Running Cooling Heating Green Yellow Malfunction Code LED2 LED3 LED4 Reasons...
  • Page 50 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) UNIT 18K & 24K, 230 Volts Indoor Unit Display Outdoor unit display (LED’s have 3 modes) Indicator Display (LED Flash 0.5s−ON/0.5s−OFF OFF, lFlash Error Running Cooling Heating_ D42/ D43/ Code Malfunction Display Operation Status Malfunction 1.
  • Page 51 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) UNIT 18K & 24K, 230 Volts (Cont.) Indoor Unit Display Outdoor unit display (LED’s have 3 modes) Indicator Display (LED Flash 0.5s−ON/0.5s−OFF OFF, lFlash Error Running Cooling Heating_ D42/ D43/ Code Malfunction Display Operation Status Malfunction...
  • Page 52 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) UNIT 18K & 24K, 230 Volts (Cont.) Indoor Unit Display Outdoor unit display (LED’s have 3 modes) Indicator Display (LED Flash 0.5s−ON/0.5s−OFF OFF, lFlash Error Running Cooling Heating_ D42/ D43/ Code Malfunction Display Operation Status Malfunction...
  • Page 53 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) UNIT 18K & 24K, 230 Volts (Cont.) Indoor Unit Display Outdoor unit display (LED’s have 3 modes) Indicator Display (LED Flash 0.5s−ON/0.5s−OFF OFF, lFlash Error Running Cooling Heating_ D42/ D43/ Code Malfunction Display Operation Status Malfunction...
  • Page 54 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) UNITS 30K & 36K, 230 Volts Display Indoor Unit State of the Lamps of Outdoor Unit PCB Error Malfunction Code Yellow Green Reasons Compressor running (normal) Flash 1 times Normal Auto defrost (normal) Flash 2 times Normal Refrigerant leakage.

  • Page 55: Malfunction Analysis

    SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) Troubleshooting 9.1 Malfunction Analysis Note: When replacing the controller, make sure to insert the jumper into the new controller, otherwise the unit will display C5 Measure insulation resistance The breaker trips immediately to ground to see if there is any when it is set to IONI.
  • Page 56 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) Improperly set temperature Adjust set temperature If cooling or heating load is Check the forecasted load of cooling (heating) matched to unit The refrigerant has leakage Fix the leak and recharge the system. or is insufficient Leakage between the high pres−...
  • Page 57 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) The windings of the indoor fan motor are open or the over heat Replace the fan motor or the defective part. protection has kicked in. The built−in heat protection of the motor kicks in frequently because the motor is Replace the fan motor The fan does not...
  • Page 58 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) The torque of the swing motor is not enough First, check whether the connection is Wrong connection The swing fan wrong. If no, replace the parts does not run. The controller is damaged(IC2003 is damaged, the swing relay can not close, etc) Controller malfunction (IC2003...
  • Page 59 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) Analysis or processing of some of the malfunction display: 5 Compressor over load protection 1 Compressor discharge protection Possible causes: insufficient or too much refrigerant; blockage of capillary or metering device and increase of suction temp.; improp- Possible causes: shortage of refrigerant;...
  • Page 60 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) 9.3 Basic System Check Applicable for 09 & 12K model (1) Capacitor charge fault (Fault with outdoor unit)(AP1 below refers to the outdoor control panel) Main Check Points: Use AC voltmeter to check if the voltage between ter- minal L and N on the wiring board is within 210 AC VAC.
  • Page 61 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) (2) IPM Protection, Out−of−step Fault, Compressor Phase Over current (AP1 below refers to the outdoor control panel) Main check points: Is the connection between control panel AP1 and com- pressor COMP secure? Loose? Is the connection in correct order? Is the voltage input of the machine within normal range? (Use AC voltmeter to measure the voltage...
  • Page 62 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) Energize and switch on Use AC voltmeter If the voltage Check the supply to measure the IPM protection between terminal L voltage and voltage between occurs after the and N on wiring machine has run for terminal L and N restore it to...
  • Page 63 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) (3) High temperature and overload protection diagnosis (AP1 hereinafter refers to the control board of the outdoor unit) Detection: Is outdoor ambient temperature in normal range°? Are the outdoor and indoor fans operating normally? Is the heat dissipation environment inside and outside the unit good? Fault diagnosis process:...
  • Page 64 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) (4) Start−up failure (following AP1for outdoor unit control board) Detection Whether the compressor wiring is connected correctly? Is the compressor broken? Has the compressor stopped long enough before re− start Fault diagnosis process: Power on the unit Restart it up after Is stop time of the compressor...
  • Page 65 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) (5) Out of step diagnosis for the compressor (AP1 hereinafter refers to the control board of the outdoor unit) Detection: Is the system pressure too high? Is the input voltage too low? Fault diagnosis process: Out of step occurs in Out of step occurs once the...
  • Page 66 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) (6) Overload and air exhaust malfunction diagnosis (following AP1 for outdoor unit control board) Detection: Is the PMV connected well or not? Is the PMV dam- aged? Has refrigerant leaked? Fault diagnosis process: 20 minutes after the complete unit is powered off...
  • Page 67 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) (7) Power factor correct or (PFC) fault (a fault of outdoor unit) (AP1 hereinafter refers to the control board of the outdoor unit) Detection: Check if the reactor (L) of the outdoor unit and the PFC capacitor are broken Fault diagnosis process: Start...
  • Page 68 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) (8) Communication malfunction: (following AP1 for outdoor unit control board) Detection: Is there any damage to the indoor unit mainboard com- munication circuit? Is communication circuit damaged? Are the indoor and outdoor units connection wire, and indoor and outdoor units inside wiring correct or not, is there any damage? Fault diagnosis process:...
  • Page 69 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) Application for 18 & 24K model Confirm the malfunction type according to the malfunction indicator of indoor/outdoor unit and malfunction sheet (usually the sheet will be stuck on the electric box cover or top cover of the unit). As long as there is a malfunction, the indicator of the outdoor controller board will display the corresponding malfunction directly;...
  • Page 70 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) (1) Capacitor charging malfunction (outdoor unit malfunction) Detection: Detect if the voltage of L and N terminal of wiring board is between 210AC 240AC by AC volt meter; Is reactor (L) well connected? Is connection wire loose or disconnected? Is reactor (L) damaged? Malfunction diagnosis process: Turn on the unit...
  • Page 71 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) (2) IPM protection, desynchronizing malfunction, phase current of compressor is overcurrent (outdoor unit malfunction) Outdoor unit malfunction indicator status Malfunction IPM protection Desynchronizing malfunction Compressor overcurrent Detection: If control board AP1 and compressor COMP are well connected? If they are loose? If the connection se- quence is correct? Is voltage input in the normal range (Test the voltage...
  • Page 72 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) Energize and switch on Use AC voltmeter Check the supply to measure the If the voltage IPM protection voltage and voltage between between terminal L and N on wiring occurs after the machine has run for restore it to terminal L and N board XT is within...
  • Page 73 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) (3) Diagnosis for high temperature, overload protection (check outdoor unit in cooling mode and check indoor unit in heating mode) Outdoor unit malfunction indicator status Detection: If the outdoor ambient temperature is in normal range; If the indoor and outdoor fan are running normally;...
  • Page 74 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) (4) Diagnosis for failure start up malfunction (outdoor unit malfunction) Outdoor unit malfunction indicator status Detection: If the compressor wiring is correct? If the compressor has been off long enough? If the compressor is damaged? If the refrigerant charging is too much? Malfunction diagnosis process: Energize the unit...
  • Page 75 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) (5) Diagnosis for compressor synchronization (outdoor unit malfunction) Outdoor unit malfunction indicator status Detection: If the system pressure is too high? If the working voltage is too low? Malfunction diagnosis process: Synchronization after Synchronization energizing the unit during operation...
  • Page 76 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) (6) Diagnosis for overload and discharge malfunction (outdoor unit malfunction) Outdoor unit malfunction indicator status Malfunction Overload Discharge Detection: If the electronic expansion valve is connected cor- rectly? Is the expansion valve damage? If the refrigerant leaked? If the overload protector is damage? If the discharge temp sensor is damage?
  • Page 77 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) (7) Communication malfunction Outdoor unit malfunction indicator status Detection: Check if the connection wire and the built−in wiring of indoor and outdoor unit is connected and not damaged; If the communication circuit of indoor mainboard is damaged? If the communication circuit of outdoor mainboard (AP1) is damaged? Malfunction diagnosis process:...
  • Page 78 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) Diagnosis process for outdoor communication circuit (refer to the key detection points of outdoor unit) Start Test voltage valueof Test10 position in diagram with voltage meter Number jumping Test voltage value of Test 13 position in diagram with voltage meter Number jumping...
  • Page 79 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) 421 08 9204 00...
  • Page 80 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) 421 08 9204 00...
  • Page 81 SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H) 421 08 9204 00...

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