Page 1 MULTI-ZONE MINI-SPLIT (DUAL, TRIPLE, QUAD, & FIVE PORT) SERVICE MANUAL For the following models: Indoor Unit Outdoor Unit Wall Mounted Console SHE9H4ZIGX SMZC9H4ZIGX Dual SHE12HZIGX SMZC12H4ZIGX SMZ18H46ZOGX SHE18HZIGX SMZC18H4ZIGX Triple SHE9H4ZIGB SMZ24H46ZOGX Cassette SHE12HZIGB SMZCA12H4ZIGX SHE18HZIGB SMZCA18H4ZIGX Quad SHE24HZIGB SMZCA24H4ZIGX...
Page 2: Table Of Contents
Table of Contents 1. Precaution ..................................5 1.1 Safety Precaution ................................ 5 1.2 Warning ..................................5 1.3 Caution ..................................6 1.4 Operational ................................. 6 2. Model Names and Definitions ............................7 2.1 Model Names and Definition ............................7 2.2 Types of Indoor Units ..............................1 3.
Page 3 7. System Configuration ..............................20 7.1 System Structure ............................... 20 7.2 Configuration Options ............................... 20 7.2.1 Dual Port Options ............................... 20 7.2.2 Quad Port Options.............................. 21 7.2.3 Quad Port Options.............................. 21 7.2.4 Five Port Options ..............................22 8. Installation ..................................23 8.1 Placing the Indoor Unit .............................
Page 4 9.1.3 “FAN” Mode ............................... 34 9.1.4 “HEAT” Mode ..............................35 9.2 Protection Features ..............................36 9.2.1 Mode Conflict (“E7”) ........................... 36 9.2.2 Overload Protection (“E8”) ..........................36 9.2.3 Compressor Overload Protection (“H3”) ......................36 9.2.4 Communication Malfunction (“E6”) ........................36 9.2.5 Intelligent Power Module (IPM) Protection (“H5”) ....................
Page 5 11.18 U8: Indoor Fan Motor Zero-Cross Detecting Error....................65 11.19 Error Code label on the outdoor units ........................66 12. Disassembly Procedure ..............................68 12.1 Outdoor Units ................................68 12.1.1 Dual Port (SMZ18H46ZOGX) ..........................68 12.1.2 Triple/Quad Port (SMZ24H46ZOGX/SMZ30H46ZOGX) ..................76 12.1.3 Five Port (SMZ42H46ZOGX) ..........................
Page 6: Precaution
1. Precaution  Installation MUST conform with local building codes or, in the absence of local codes, with the National Electrical Code NFPA70/ANSI C1-1993 or current edition and Canadian Electrical Code Part1 CSA C.22.1.  The information contained in the manual is intended for use by a qualified service technician familiar with safety procedures and equipped with the proper tools and test instruments.
Page 7: Caution
 When the product is soaked, contact an authorized service center.  Be careful to prevent water from entering the product.  Ventilate the product from time to time when operating with a stove, etc.  Turn the main power off when cleaning or maintaining the product. ...
Page 8: Model Names And Definitions
X – Internal Code E – Type of Refrigerant 4: R410a F – Rated Voltage Z: 230V Model Type of Unit (I/O) Type of Unit Capacity (BTU) SHE9H4ZIGX / SHE9H4ZIGB 9,000 SHE12H4ZIGX / SHE12H4ZIGB 12,000 Wall Mounted SHE18H4ZIGX / SHE18H4ZIGB 18,000 SHE24H4ZIGB 21,400...
Page 9: Types Of Indoor Units
2.2 Types of Indoor Units Indoor Unit Type Catalog Number Indoor Unit SHE9H4ZIGX Wall-mounted SHE12H4ZIGX SHE18H4ZIGX SHE9H4ZIGB SHE12H4ZIGB SHE18H4ZIGB SHE24H4ZIGB SMZC9H4ZIGX Console SMZC12H4ZIGX SMZC18H4ZIGX SMZCA12H4ZIGX Cassette SMZCA18H4ZIGX SMZCA24H4ZIGX SMZFC9H4ZIGX SMZFC12H4ZIGX Floor / Ceiling SMZFC18H4ZIGX SMZFC24H4ZIGX SMZD9H4ZIGX SMZD12H4ZIGX Ducted SMZD18H4ZIGX SMZD21H4ZIGX...
Page 10: Dimensions
3. Dimensions 3.1 Indoor Unit 3.1.1 Wall Mounted Model Width Height Depth SHE9H4ZIGX / SHE12H4ZIGX 34.3” 11” 7” SHE18H4ZIGX 37.8” 11.8” 7.7” SHE9H4ZIGB / SHE12H4ZIGB 33.3” 10.8” 7.1” SHE18H4ZIGB 37” 11.7” 7.9” SHE24H4ZIGB 39.6” 12.4” 8.6” 3.1.2 Console Model Width...
Page 11: Cassette
3.1.3 Cassette Model Width Height Depth SMZCA12H4ZIGX Outline Outline Outline SMZCA18H4ZIGX SMZCA24H4ZIGX Outline Outline Outline SMZCA12H4ZIGX & SMZCA18H4ZIGX 25.6" 22.44" 15.75" 22.44" 23.8" 25.6" SMZCA24H4ZIGX Refrigerant pipe Hoisting screws (4 pcs) 26.8" ( Gaps between hoisting screw rods) 33.1" ( Indoor unit) 35"...
Page 12: Floor/Ceiling
3.1.4 Floor/Ceiling Model SMZFC9H4ZIGX SMZFC12H4ZIGX 48.03” 8.86” 27.56” 45.59” 11.02” SMZFC18H4ZIGX SMZFC24H4ZIGX 3.1.4 Ducted Model SMZD9H4ZIGX 29.21" 19.33” 26.06” 24.41” 27.56” 24.21” 30.79” 6.14” 7.87” 25” SMZD12H4ZIGX SMZD18H4ZIGX 37.09” 19.33” 33.94” 32.28 35.43” 24.21” 38.66” 6.14” 7.87” 25” SMZD21H4ZIGX 44.96” 19.33”...
Page 13: Outdoor Unit
3.2 Outdoor Unit 3.2.1 Dual Port SMZ18H46ZOGX...
Page 14: Triple / Quad Port
3.2.2 Triple / Quad Port SMZ24H46ZOGX / SMZ30H46ZOGX...
Page 15: Five Port
3.2.3 Five Port SMZ42H46ZOGX 42.8" 40" 24.8" 7.5"...
Page 16: Refrigeration System Diagram
4. Refrigeration System Diagram Model Ports Capacity (BTU) SMZ18H46ZOGX Dual 18,000 SMZ24H46ZOGX Triple 24,000 SMZ30H46ZOGX Quad 30,000 A1: Unit A electronic expansion valve A2: Unit A gas pipe temperature sensor A3: Unit A liquid pipe temperature sensor B1: Unit B electronic expansion valve B2: Unit B gas pipe temperature sensor B3: Unit B liquid pipe temperature sensor C1: Unit C electronic expansion valve...
Page 17 Model Ports Capacity (BTU) SMZ42H46ZOGX Five 42,000 Heat Exchanger Liquid Receiver Four-way Valve Capillary Oil Separator Outdoor Uint Stop Valve Compressor Gas/Liquid Separator Electronic Expansion Valve Heating Cooling Indoor Uint Heat Exchanger Heat Exchanger Heat Exchanger Heat Exchanger Heat Exchanger...
Page 18: Key Components
5. Key Components 5.1 Compressor Working Range: 30~100Hz (SMZ18H46ZOGX, SMZ24H46ZOGX, SMZ30H46ZOGX) 15~110Hz (SMZ42H46ZOGX) Using the set temperature, unit capacity, indoor and outdoor temperature, the outdoor unit will determine the required load and adjust the working frequency of the compressor. 5.2 Electronic Expansion Valve Opening Angle: 90~480Hz The outdoor coil is separated into 2, 3, 4, or 5 independent systems.
Page 19: Wiring Diagram
NOTE: The wiring diagrams shown are subject to change without notice. Please refer to the one supplied with the unit for the most accurate information. 6.1 Indoor Units 6.1.1 Wall Mounted Model Capacity (BTU) SHE9H4ZIGX 9,000 SHE12H4ZIGX 12,000 SHE18H4ZIGX 18,000...
Page 20 Model Capacity (BTU) SHE18H4ZIGB 18,000 AP2: MAIN BOARD INDOOR UNIT Model Capacity (BTU) SHE24H4ZIGB 21,400 AP2: MAIN BOARD STEPPING MOTOR MOTOR INDOOR UNIT...
Page 21: Console
6.1.2 Console Model Capacity (BTU) SMZC9H4ZIGX 9,000 SMZC12H4ZIGX 12,000 SMZC18H4ZIGX 18,000 6.1.3 Cassette Model Capacity (BTU) SMZCA12HZIGX 12,000 SMZCA18HZIGX 14,400...
Page 22: Floor/Ceiling
Model Capacity (BTU) SMZCA24HZIGX 22,800 Evaporator Shell 6.1.4 Floor/Ceiling Model Capacity (BTU) SMZFC9H4ZIGX 8,500 SMZFC12H4ZIGX 11,900 SMZFC18H4ZIGX 17,000 SMZFC24H4ZIGX 22,800 Evaporator Bracket...
Page 23: Ducted
6.1.5 Ducted Model Capacity (BTU) SMZD9H4ZIGX 8,500 SMZD12H4ZIGX 11,900 SMZD18H4ZIGX 15,300 SMZD21H4ZIGX 20,400 SMZD24H4ZIGX 23,800...
Page 24: Outdoor Units
6.2 Outdoor Units 6.2.1 Dual Port SMZ18H46ZOGX...
Page 25: Triple / Quad Port
6.2.2 Triple / Quad Port SMZ24H46ZOGX / SMZ30H46ZOGX...
Page 26: Five Port
6.2.3 Five Port SMZ42H46ZOGX...
Page 28: System Configuration
7. System Configuration 7.1 System Structure For this multi-zone air conditioning system, the outdoor unit is able to drive the indoor units which can be different types as shown below. The console indoor unit can be controlled only by the remote control. The other indoor units can be controlled by either the remote control or the wall control.
Page 29: Quad Port Options
7.2.2 Quad Port Options SMZ24H46ZOGX NOTE: Do not mismatch or connect to an outdoor unit other than the designed matched system. This system must be used with a minimum of two (2) indoor units (evaporators). Two (2) Indoor Units Three (3) Indoor Units 9K + 9K 9K + 12K 9K + 9K + 9K...
Page 30: Five Port Options
7.2.4 Five Port Options SMZ42H46ZOGX NOTE: Do not mismatch or connect to an outdoor unit other than the designed matched system. This system must be used with a minimum of two (2) indoor units (evaporators). Two (2) Indoor Units Three (3) Indoor Units Four (4) Indoor Units Five (5) Indoor Units 9K + 9K + 9K...
Page 31: Installation
8. Installation 8.1 Placing the Indoor Unit GENERAL WARNINGS!  Ensure the proper clearance and mounting requirements are met as shown.  Ensure airflow from the inlet and outlet area of the indoor unit is not obstructed.  Make sure that there is enough space for care and maintenance. ...
Page 32: Console
8.1.2 Console 4.9' or more INSTALLATION PAPER PLANK 4.9' or more 4.9' or more 4.9' 6" or more from the floor 8.1.3 Cassette Wall Surface Surface Wall Wall Surface Surface 4. 9 f t 4. 9 f t Wall Surface...
Page 33: Floor/Ceiling
8.1.4 Floor/Ceiling PO W ER TI M ER > 2 ft. > 2 ft > 3 3 ft > 1 ft > 5 ft > 2 ft > 2 ft. 8.1.5 Ducted...
Page 34: Placing The Outdoor Unit
8.2 Placing the Outdoor Unit GENERAL WARNINGS!  Ensure the proper clearance and mounting requirements are met as shown.  Ensure airflow from the inlet and outlet area of the outdoor unit is not obstructed.  Make sure that there is enough space for care and maintenance. ...
Page 35: Maximum Line Length And Height
8.3 Maximum Line Length and Height For best results, mount the outdoor unit as close as possible to the indoor units. Check the maximum line length specifications before mounting. The maximum line length must not be exceeded! Dual/Quad Port Outdoor Units (18K, 24K & 30K) Description Dual Port Outdoor Unit Triple/Quad Port Outdoor Unit...
Page 36: Tubing Connection Size
8.4 Tubing Connection Size NOTE: When the indoor line set requires a different size from the outdoor connection, please follow the line set size of indoor unit. An adaptor is required to connect the line set to outdoor unit. 8.4.1 Indoor Unit 1/4"...
Page 37: Refrigerant Tubing
8.5 Refrigerant Tubing GENERAL WARNINGS!  The outdoor unit is supplied with a sufficient refrigerant charge of R410a for the maximum design length (no extra refrigerant required. Beyond this length, additional refrigerant is required and must be weighed in (see specifications). ...
Page 38: Electrical Connection
8.6 Electrical Connection GENERAL WARNINGS!  Electrical wiring and connections should be made by a qualified electrician in accordance with the National and Local electrical codes and regulations.  The system must be properly grounded.  Voltage should not vary beyond ±10% of the rated voltage. ...
Page 39: Five Port
WARNINGS!  Improper wiring between the indoor and outdoor units can cause serious damage to the system and risk to personal injury or fire. Use caution when connecting the wiring to ensure that the wires are connected properly.  DO NOT use thermostat wire to connect indoor and outdoor units. DO NOT cross wires! ...
Page 40: Evacuating The System
8.7 Evacuating the System After connecting the indoor and outdoor units, evacuate the air from the line set and the indoor unit by following the procedures below. Leak Testing Indoor units are nitrogen pre-charged, however they should be pressure tested before installation. Follow the steps below to test for leaks.
Page 41: Start-Up Testing
8.8 Start-Up Testing 8.8.1 Preparation NOTE: A wall control (MSWCH; 243-7002) is optional. For operation and installation details, please refer to manual 950-0210 and 950-0220 respectively. 1. Double check that all wiring has been properly connected. 2. Check that tubing has been properly connected and unsure the suction and liquid side service valves are fully open.
Page 42: Functions And Protection Features
9. Functions and Protection Features 9.1 Functions 9.1.1 “COOL” Mode Temperature range: 61~86°F 4 way valve position: Closed (Off) On operation: • The compressor will only start running when any of the indoor units call for cooling and the compressor delay interval has passed. •...
Page 43: Heat" Mode
9.1.4 “HEAT” Mode Temperature range: 61~86°F 4 way valve position: Open (On) On Operation: • The compressor will only start running when any of the indoor units call for heating and the compressor delay interval has passed. • When the compressor is operating, the electronic expansion valve and outdoor fan will also turn on.
Page 44: Protection Features
9.2 Protection Features 9.2.1 Mode Conflict (“E7”) If two or more indoor units are operating in different modes, an indoor unit may show this error code if there is a mode conflict. Below are the priority levels and mode conflict for the different modes of operation.
Page 45 THIS PAGE INTENTIONALLY LEFT BLANK...
Page 46: Error Codes
10. Error codes 10.1 Error Codes on Indoor unit panel Malfunction Description Display Running LED Cooling LED Heating LED Short/open circuit of the coil temp. sensor for the 3 Flashes 3 Flashes 3 Flashes condenser (42K Unit Only) Short/open circuit of the liquid valve temp. sensor 19 Flashes Short/open circuit of the suction valve temp.
Page 47 Malfunction Description Display Running LED Cooling LED Heating LED Frequency Drop for Heating High Temperature 10 Flashes Protection Defrost or Oil Return Heat Mode 1 Flash Electrostatic Air Cleaning Protection 2 Flashes Compressor Overload Protection 3 Flashes System Overload 4 Flashes IPM Protection 5 Flashes Indoor Fan Motor Failure (Except for 42K Unit)
Page 48: Flash Codes On The Pc Board Of Outdoor Unit
10.2 Flash codes on the PC board of outdoor unit 10.2.1 Dual/Triple/Quad Ports There are four LEDs for error codes which are located on the outdoor main board. Remove the top cover of the outdoor unit to approach the control box. Unscrew to open the control box.
Page 49 Dual Port (SMZ18H46ZOGX) Main Board Triple/Quad Port (SMZ24H46ZOGX /SMZ30H46ZOGX) Main Board...
Page 50 When several malfunctions occur at the same time, they will be displayed in circulation and every malfunction is displayed for 5 seconds. ☼ – flash ○ – off ● – on Malfunction Description LED 1 LED 2 LED 3 LED 4 ○...
Page 51 ☼ – flash ○ – off ● – on Malfunction Description LED 1 LED 2 LED 3 LED 4 ○ ● ○ ● IPM thermal resistance malfunction ● ● ○ ● Unit A liquid pipe temperature sensor malfunction ☼ ● ○...
Page 52: Five Ports
10.2.2 Five Ports There is a LED display for error codes that is located on the outdoor main board. Remove the top cover of the outdoor unit to gain access to the main board in the control box. Five Port (SMZ42H46ZOGX) Main Board JUMPER - if missing from the spare part pc board, remove from factory installed pc...
Page 53 Malfunction Name of 42K Multi zone Outdoor Display Indoor Display Wall Control Display Trial operation Incorrect connection of communication wire or expansion valve failure High Pressure Protection Anti-Freezing Protection Low Pressure Protection Exhaust Protection (Temperature Overheat) Over Current Protection 41 (for Unit D) Communication Malfunction 51 (for Unit E) 46 (for Unit D)
Page 54: Troubleshooting
11. Troubleshooting NOTE: All pictures used in this section are for reference only. Actual products may be different. WARNING! Electricity is still kept in the capacitors even when the power supply is shut off or disconnected. Do not forget to discharge the electricity in the capacitors before troubleshooting. Electrolytic Capacitors (CAUTION! HIGH VOLTAGE!) For other models, please connect the discharge resistance (approximately 100Ω...
Page 55 THIS PAGE INTENTIONALLY LEFT BLANK...
Page 56: C5: Jumper Failure
11.1 C5: Jumper Failure...
Page 57: E1: High Pressure Protection
11.2 E1: High Pressure Protection Additional Possible Causes  Outdoor board and pressure switch is not connected well  Too much refrigerant in the system  Outdoor ambient temperature is too high (i.e. >127 °F)  Expansion valve or 4 way valve failed...
Page 58: E2: Anti-Freezing Protection
11.3 E2: Anti-Freezing Protection Possible Causes  Check the air flow. Make sure the inlet and outlet of both indoor and outdoor unit is not blocked.  Check the air filters and make sure they are clean.  Check the indoor tube sensor F2 by referring the value from “Appendix II” on page 125.
Page 59: E3: Low Pressure Protection
11.4 E3: Low Pressure Protection...
Page 60: E4: Exhaust Protection
11.5 E4: Exhaust Protection 11.6 E5: Over-Current Protection...
Page 61: E6: Communication Malfunction
11.7 E6: Communication Malfunction If “E6” only shows up on some indoor units.
Page 62 If “E6” only shows up on all indoor units.
Page 63: E8: Overload Protection
11.8 E8: Overload Protection The system overload protection E8 is mainly caused by high pressure or overcurrent issue. Please refer to the flow chat for E1 (on page 52) and E5 (on page 55). 11.9 E9: Condensate Water Full in Indoor Unit (For Cassette and Ducted indoor units only)
Page 64: F1/F2/F3/F4/F5: Temperature Sensor Failure
11.10 F1/F2/F3/F4/F5: Temperature Sensor Failure  Check the resistance value of corresponding sensor.  Check the position of corresponding sensor; make sure the connection is good.  Check the wiring.  If above are OK, the PC board may have to be replaced. See Appendix I, II, or III on page 124-126 for the resistance of the sensors.
Page 65: F2/F4: Tube Sensor For Indoor And Outdoor
11.10.2 F2/F4: Tube Sensor for Indoor and Outdoor 11.10.3 F5: Exhaust Sensor Failure...
Page 66: H3: Compressor Overload Protection
11.11 H3: Compressor Overload Protection...
Page 67: H5: Ipm Protection
11.12 H5: IPM Protection Additional Possible Causes  The input voltage of the unit is not normal.  The connection wire for the compress is not connect well or loose.  The resistance of the compressor is not normal.  The unit is overloaded.
Page 68: H6: Indoor Fan Motor Failure
11.13 H6: Indoor Fan Motor Failure For Dual/Quad port units only (SMZ18H46ZOGX & SMZ30H46ZOGX)
Page 69: H7: Compressor Desynchronizing
11.14 H7: Compressor Desynchronizing Additional Possible Causes  High pressure  Radiation of the unit is not good...
Page 70: Hc: Pfc Protection
11.15 HC: PFC Protection...
Page 71: Lc: Startup Failure
11.16 Lc: Startup Failure...
Page 72: Pu: Capacitor Charging Circuit Error
11.17 PU: Capacitor Charging Circuit Error...
Page 73: U8: Indoor Fan Motor Zero-Cross Detecting Error
11.18 U8: Indoor Fan Motor Zero-Cross Detecting Error For Dual/Triple/Quad port units only (SMZ18H46ZOGX /SMZ24H46ZOGX / SMZ30H46ZOGX)
Page 74: Error Code Label On The Outdoor Units
11.19 Error Code label on the outdoor units For Dual/Triple/Quad port unit (SMZ18H46ZOGX /SMZ24H46ZOGX / SMZ30H46ZOGX)
Page 75 For five port unit only (SMZ42H46ZOGX)
Page 76: Disassembly Procedure
12. Disassembly Procedure CAUTION! Be sure to wait for a minimum of 10 minutes after turning off power before disassembly. 12.1 Outdoor Units 12.1.1 Dual Port (SMZ18H46ZOGX) Step 1: Remove top cover and handle Before disassembly. Twist off the screws used for fixing the handle, pull the handle upward to remove it.
Page 77 Step 2: Remove front grill and front panel Remove the screws connecting the front grill and the front panel. Remove the front grill. Twist off the screws fixing the panel, pull it upward, loosen the clasp on the right side, rotate it to the left, and then remove the front panel.
Page 78 Step 3: Remove right side plate Remove the screws connecting the right side plate with the chassis, the valve support, and the electric box. Then remove the right side plate assembly. Remove the screws connecting the left side plate and the chassis and then remove the left side plate assembly.
Page 79 Step 4: Remove axial flow fan Remove the nuts fixing the blade and then remove the axial flow fan. Remove the four (4) tapping screws fixing the motor. Disconnect the leading wire insert of the motor and then remove the motor. Remove the two (2) tapping screws fixing the motor support and then pull the motor support upwards to remove it.
Page 80 Step 6: Remove soundproof sponge Carefully remove the soundproof sponge from around the compressor. Step 7: Remove reactor Remove screws connecting reactor and middle isolation sheet. Then remove the reactor.
Page 81 Step 8: Remove 4-way valve Recover all the refrigerant from the system. Unsolder the pipelines connecting the compressor and condenser assembly. Then remove the 4-way valve assembly. Step 9: Remove electronic expansion valve and cut-off valve Remove electronic expansion valve and cut-off valve.
Page 82 Step 10: Remove valve support subassembly Remove screws fixing valve support and chassis. Then remove the valve support subassembly. Step 11: Remove isolation sheet Remove screws fixing isolation sheet and then remove the isolation sheet.
Page 83 Step 12: Remove compressor Twist off the three foot nuts on the compressor and then remove the compressor. Step 13: Remove condenser subassembly Remove the nuts fixing the blade and then remove the axial flow fan. Remove the four (4) tapping screws fixing the motor.
Page 84: Triple/Quad Port (Smz24H46Zogx/Smz30H46Zogx)
12.1.2 Triple/Quad Port (SMZ24H46ZOGX/SMZ30H46ZOGX) Step 1: Remove the big handle and wire connection cover Before disassembly. Remove the screws fixing the big handle and the right side plate to remove the big handle. Remove the screws fixing the wire connection cover and right side plate to remove the wire connection cover.
Page 85 Step 2: Remove top cover Remove the screws fixing top cover, panel, and left and right side plate to remove top cover. Step 3: Remove grill Remove the screws fixing grill and panel to remove the grill on the panel.
Page 86 Step 4: Remove panel Remove the screws fixing panel, chassis, and motor support to remove the panel. Step 5: Remove guard grill Remove the screws fixing guard grill and left side plate to remove guard grill.
Page 87 Step 6: Remove guard grill Remove the screws fixing the guard grill and the left side plate to remove the guard grill. Step 7: Remove left side plate Remove screws fixing chassis condenser support to remove the left side plate.
Page 88 Step 8: Remove condenser support Remove the screws fixing support and chassis to remove the condenser support. Step 9: Remove axial fan blade Remove the screw nuts fixing fan blade with spanner to remove the fan blade.
Page 89 Step 10: Remove motor and motor support subassembly Remove the tapping screws fixing motor. Pull out the pin of the leading wire for the motor and remove the screws fixing the motor support and chassis to remove the motor and motor support subassembly.
Page 90 Step 12: Remove PFC electrical inductance Remove the screws fixing the PFC electrical inductance and isolation sheet to remove the PFC electrical inductance. Step 13: Remove 4-way valve subassembly Recover all the refrigerant from system. Unsolder pipelines connecting compressor condenser assembly.
Page 91 Step 14: Remove suction pipe subassembly Unsolder the brazed joint joining the suction pipe subassembly, compressor, and liquid receiver to remove the suction pipe subassembly. Step 15: Remove liquid receiver Remove the screws fixing isolation sheet and liquid receiver and lift to remove the liquid receiver.
Page 92 Step 16: Remove the isolation sheet assembly Remove the screws fixing the isolation sheet assembly and the condenser side plate to remove the PFC electrical inductance. Step 17: Remove compressor Remove the screw nuts fixing the compressor feet and chassis with the spanner, as well as the foot cushion, remove...
Page 93 Step 18: Remove valve support assembly Remove the screws fixing valve support assembly and chassis subassembly to remove the valve support assembly. Step 19: Remove EXV assembly Unsolder the brazed joint joining the EXV subassembly and refrigeration collection pipe to remove the EXV assembly.
Page 94: Five Port (Smz42H46Zogx)
12.1.3 Five Port (SMZ42H46ZOGX) 12.1.3.1 Disassembly and Reassembly of Fan Blades Step 1: Remove top cover Remove the screws on the cover plate by using a screwdriver. Then remove cover plate. Step 2: Remove front panel Remove the screws on the front panel by using a screwdriver.
Page 95 Step 3: Remove right panel Remove the screws on the panel by using a screwdriver. Then remove the panel on the right side. Step 4: Remove grill Remove the screws on the grill by using a screwdriver. Then remove the grill.
Page 96 Step 5: Remove the outer casing Remove the screws on the outer casing by using a screwdriver. Then remove the outer casing. Step 6: Remove the fan blades Remove the fixed screws on the fan blades by using a spanner. Then remove the fan blades.
Page 97 Step 7: Reassembly Assembly the disassembled main parts in the reverse order as it was disassembled. Power on the unit to test it is working properly.
Page 98 12.1.3.2 Disassembly and Reassembly of the Compressor NOTE: Make sure system is disconnected from power and all refrigerant is recovered from system. Step 1: Disconnect the power cord Remove the fixed screws on the power cord by using a screwdriver. Remove the power cord.
Page 99 Step 3: Remove the compressor Remove the bolts on the compressor feet securing it in place. Remove the compressor from the bottom plate. Step 4: Replacing the compressor Place the compressor on the bottom plate replace the bolts on the compressor feet. Connect the suction inlet and discharge outlet with the refrigerant system.
Page 100 12.1.3.3 Disassembly and Reassembly of the 4-way Valve Step 1: Remove the 4-way valve coil Remove the screws on the 4-way valve coil and then remove the 4-way valve coil. Step 2: Remove the 4-way valve Unsolder the brazed joints connecting the 4-way valve with the inlet and outlet tubes.
Page 101 Step 3: Reassembly Place the 4-way valve in the correct position and braze all connecting tubes to the 4-way valve. Set the 4-way valve coil back in place and screw back on.
Page 102 12.1.3.4 Disassembly and Reassembly of the Electronic Expansion Valve Step 1: Remove the electronic expansion valve coil Remove the electronic expansion valve coil by rotating it until the lock is unfixed. Step 2: Remove the electronic expansion valve Unsolder the brazed joints of the electronic expansion valve.
Page 103 Step 4: Reassembly: Brazing After the expansion valve is in place, braze the joints for the expansion valve. Step 5: Reassembly: Electronic expansion valve coil Set the electronic expansion valve coil on the valve body and adjust the lock to the right place.
Page 104 12.1.3.5 Disassembly and Reassembly of Accumulator Step 1: Unsoldering Unsolder joints connecting accumulator. Step 2: Remove accumulator Remove bolt that fixes accumulator in place. Then remove the accumulator from the middle baffle.
Page 105 Step 3: Reassembly Fix the new accumulator on the middle baffle. Then tighten the bolt that fixes it in place. And finally, braze the joints for the accumulator.
Page 106: Indoor Units
12.2 Indoor Units 12.2.1 Wall Mounted Step 1: Remove front panel Open front panel and remove the screws holding the indicator. Push the rotor shaft on both sides of the panel to make it separate from the groove. Then remove the panel.
Page 107 Step 4: Remove front case Remove the screws holding in the front case. Loosen clasps in the middle of the front case and then turn over the front case to remove it Step 5: Remove water tray Remove the screws of electric box cover 1 and loosen the clasps.
Page 108 Step 7: Remove left side plate Remove the screws fixing chassis and condenser support to remove the left side plate. Remove connection screws between evaporator and the rear case. Slightly adjust the pipe of the evaporator and then remove the evaporator.
Page 109 Step 8: Remove motor and cross flow blade Remove the screws fixing the motor clamp and then remove the clamp. Remove connection screws between the motor and cross flow blade to remove the components.
Page 110: Console
12.2.2 Console Step 1: Remove panel Pull the slide clasps at both sides of the panel. Pull the panel outwards, then lift up to remove the panel. Step 2: Remove filter Loosen the clasp on the upper side of the filter, then pull panel outwards to remove Step 3: Remove front case Remove the tapping screws fixing the isolation...
Page 111 Step 4: Remove swing assembly Remove the two (2) screws that fixes the swing assembly in place. Pull out the connection wires with the electric box and then pull the swing assembly outwards to remove it. Step 5: Remove water tray assembly Remove the two (2) screws that fixes the water tray in place.
Page 112 Step 7: Remove piping stopper Remove nuts on the centrifugal blade and then pull the centrifugal blade outwards to remove it. Step 8: Remove water tray assembly Remove the two (2) screws that fixes the water tray in place. Pull the water tray outwards to remove it.
Page 113 Step 10: Remove piping stopper Remove nuts on the centrifugal blade and then pull the centrifugal blade outwards to remove it. Step 11: Remove water tray assembly Remove the two (2) screws that fixes the water tray in place. Pull the water tray outwards to remove it.
Page 114: Cassette
12.2.3 Cassette 12.2.3.1 Disassembly and Reassembly of Fan Motor Step 1: Loosen the screws fixing the water tray Use a screwdriver to loosen the screws that hold the water tray in place. Step 2: Remove water tray Remove the water tray by lifting it off of the rest of the unit.
Page 115 Step 4: Remove fan Remove the fan by lifting it off of the rest of the unit. Step 5: Loosen the screws fixing the motor Use a screwdriver to loosen the screws that hold the motor in place.
Page 116 Step 6: Replace the motor Remove the old motor and replace with a new one, if necessary. Step 7: Tighten the screws fixing the motor Use a screwdriver to tighten the screws that hold the motor in place.
Page 117 Step 8: Mount the fan Mount the fan and use a spanner to tighten the bolts that hold the fan in place. Step 9: Mount the water tray Use a screwdriver to tighten the screws that fix the water tray.
Page 118 12.2.3.2 Disassembly and Reassembly of Drainage Pump Step 1: Loosen the screws fixing the water tray Use a screwdriver to loosen the screws that hold the water tray in place. Step 2: Remove water tray Remove the water tray by lifting it off of the rest of the unit.
Page 119 Step 4: Replace pump Take out the pump and replace it with a new one, if necessary. Step 5: Fix the water pump Connect the drainage pipe and tighten the screws fixing the water pump. Step 6: Replace water tray Mount the water tray and tighten the screws holding it in place.
Page 120: Floor/Ceiling
12.2.4 Floor/Ceiling Step 1: Remove front panel Pull down on the clip on the front grill until the grill is open (as shown in the diagram; arrow represents the position of the buttons; there are two clips for each “grill”). Step 2: Remove left and right plates Remove the screws (as shown in diagram) with a screwdriver and then push upward to remove the...
Page 121 Step 4: Remove electric box cover Remove the three (3) screws (as shown by the arrow in the graph) to remove the electric box cover. Step 5: Remove the air flow louvers Remove the air flow louvers from the louver support subassembly and then remove both ends from the louver motor joint.
Page 122 Step 7: Remove evaporator components Remove the screws as shown by the arrow in the graph with a screwdriver. (There are six (6) screws on the left and right of the evaporator and five (5) on the evaporator outlet press plates) Step 8: Remove the fan plate subassembly Remove the screws (as shown in diagram) with a...
Page 123 Step 9: Remove front and back scroll cases Press the buckle at the joints of the front and back scroll cases and pull upward to remove the front scroll case. Then remove the screws on the back scroll case. Lift the buckle of the back scroll case with hands and remove it.
Page 124: Ducted
12.2.5 Ducted Step 1: Remove electric wire Turn off the power supply to the system. Open the cover plate of the electric box, then disconnect the electric wires inside the box. Step 2: Remove plate for the inlet air Loosen the screws used to fix the cover plate for the inlet air with a screwdriver.
Page 125 Step 5: Loosen the fan blade and motor Loosen the screws used to fix the fan blades and then undo the buckle used to fix the motor. Step 6: Remove the motor Separate the motor from the motor frame. Remove the fan blade, then take the motor out of the inlet air frame.
Page 126: Specifications
13. Specifications 13.1 Indoor Units 13.1.1 Wall Mounted A Model Number SHE9H4ZIGX SHE12H4ZIGX SHE18H4ZIGX Product Code 243-2003-E 243-2004-E 243-2005-E Rated Voltage 208-230V AC / 1 PH 208-230V AC / 1 PH 208-230V AC / 1 PH Remote (standard) or Remote (standard) or...
Page 127: Wall Mounted B
13.1.2 Wall Mounted B Model Number SHE9H4ZIGB SHE12H4ZIGB SHE18H4ZIGB SHE24H4ZIGB Product Code 243-2007-E 243-2008-E 243-2009-E 243-2010-E Rated Voltage 208-230V AC / 1 PH 208-230V AC / 1 PH 208-230V AC / 1 PH 208-230V AC / 1 PH Min. / Max. Operating Voltage 187 / 253 VAC 187 / 253 VAC 187 / 253 VAC...
Page 128: Console
13.1.3 Console Model Number SMZC9H4ZIGX SMZC12H4ZIGX SMZC18H4ZIGX Product Code 243-6001-E 243-6002-E 243-6003-E Rated Voltage 208-230V AC / 1 PH 208-230V AC / 1 PH 208-230V AC / 1 PH Control Remote Remote Remote Setting Range 61° F to 86° F 61°...
Page 129: Cassette
13.1.4 Cassette Model Of Indoor Unit SMZCA12H4ZIGX SMZCA18H4ZIGX SMZCA24H4ZIGX Product Code 243-6004-E 243-6005-E 243-6006-E Rated Voltage 208-230V AC / 1 PH 208-230V AC / 1 PH 208-230V AC / 1 PH Remote (standard) or Remote (standard) or Remote (standard) or Control Wall (optional) Wall (optional)
Page 130: Floor/Ceiling
13.1.5 Floor/Ceiling Model Of Indoor Unit SMZFC9H4ZIGX SMZFC12H4ZIGX SMZFC18H4ZIGX SMZFC24H4ZIGX Product Code 243-6007-E 243-6008-E 243-6009-E 243-6010-E Rated Voltage 208-230V AC / 1 PH 208-230V AC / 1 PH 208-230V AC / 1 PH 208-230V AC / 1 PH Remote (standard) or Remote (standard) or Remote (standard) or Remote (standard) or...
Page 131: Ducted
13.1.6 Ducted Model Of Indoor Unit SMZD9H4ZIGX SMZD12H4ZIGX SMZD18H4ZIGX SMZD21H4ZIGX SMZD24H4ZIGX 243-6014-E 243-6015-E Product Code 243-6011-E 243-6012-E 243-6013-E 208-230V AC / 1 PH Rated Voltage 208-230V AC / 1 PH 208-230V AC / 1 PH 208-230V AC / 1 PH 208-230V AC / 1 PH Wall (standard) or Wall (standard) or...
Page 132: Outdoor Units
13.2 Outdoor Units 13.2.1 Dual Port Model Number SMZ18H46ZOGX Product Code 243-1004-C Rated Voltage & Frequency and Phase 208-230 / 1PH Min./ Max. Operating Voltage 187 / 253 VAC Circuit Breaker Size (A) Working Temperature Range (° F) Cooling: 14 to 118; Heating: 5 to 81 Refrigerant (R410A), (oz.) 47.62 Min.
Page 133: Triple Port
13.2.2 Triple Port Model Number SMZ24H46ZOGX Product Code 243-1005-C Rated Voltage & Frequency and Phase 208-230 / 1PH Min./ Max. Operating Voltage 187 / 253 VAC Circuit Breaker Size (A) Working Temperature Range (° F) Cooling: 14 to 118; Heating: 5 to 81 Refrigerant (R410A), (oz.) 77.6 Min.
Page 134: Quad Port
13.2.3 Quad Port Model Number SMZ30H46ZOGX Product Code 243-1006-C Rated Voltage & Frequency and Phase 208-230 / 1PH Min./ Max. Operating Voltage 187 / 253 VAC Circuit Breaker Size (A) Working Temperature Range (° F) Cooling: 14 to 118; Heating: 5 to 81 Refrigerant (R410A), (oz.) 77.6 Min.
Page 135: Five Port
13.2.4 Five Port Model Number SMZ42H46ZOGX Product Code Number 243-1007-C Rated Voltage & Frequency and Phase 208-230 / 1PH Min./ Max. Operating Voltage 187 / 253 VAC Circuit Breaker Size (A) Working Temperature Range (° F) Cooling: 14 to 118; Heating: 5 to 81 Refrigerant (R410A), (oz.) 169.3 Min.
Page 136: Appendix
14. Appendix 14.1 Appendix I: Resistance of Ambient Temperature Sensor (15K) for Indoor/Outdoor Units (F1,F3) Temp. (°F) Resistance (kΩ) Temp. (°F) Resistance (kΩ) Temp. (°F) Resistance (kΩ) Temp. (°F) Resistance (kΩ) -2.2 138.1 68.0 18.75 138.2 3.848 208.4 1.071 -0.4 128.6 69.8 17.93...
Page 137: Appendix Ii: Resistance Of Tube Temperature Sensor (20K) For Indoor/Outdoor Units (F2,F4)
14.2 Appendix II: Resistance of Tube Temperature Sensor (20K) for Indoor/Outdoor Units (F2,F4) Temp. (°F) Resistance (kΩ) Temp. (°F) Resistance (kΩ) Temp. (°F) Resistance (kΩ) Temp. (°F) Resistance (kΩ) -2.2 181.4 68.0 25.01 138.2 5.130 208.4 1.427 -0.4 171.4 69.8 23.90 140.0 4.948...
Page 138: Appendix Iii: Resistance Of Exhaust Temperature Sensor (50K) For Outdoor Units (F5)
14.3 Appendix III: Resistance of Exhaust Temperature Sensor (50K) for Outdoor Units (F5) Temp. (°F) Resistance (kΩ) Temp. (°F) Resistance (kΩ) Temp. (°F) Resistance (kΩ) Temp. (°F) Resistance (kΩ) -20.2 853.5 120.2 18.34 190.4 4.75 -18.4 799.8 51.8 93.42 17.65 192.2 4.61 -16.6...
Page 139: Appendix Iv: Pressure On Service Port
14.4 Appendix IV: Pressure on Service Port.

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