Related Manuals for Thermal Zone Sea Breeze 9H47YIMI
Summary of Contents for Thermal Zone Sea Breeze 9H47YIMI
- Page 1 SINGLE ZONE MINISPLIT SERVICE MANUAL For the following models: 9H47YIMI 9H47YOMI 12H47YIMI 12H47YOMI 12H47ZIMI 12H47ZOMI 18H47ZIMI 18H47ZOMI 24H46ZIMI 24H46ZOMI 30H48ZIMI 30H48ZOMI 36H46ZIMI 36H46ZOMI 953-0131 07/22/2021...
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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/Part Names and Definitions ..........................7 2.1 Model Names and Definition........................... 7 2.2 Part Names ................................8 2.3 Function/Feature Names and Definition ......................... - Page 3 8.2 Display Function ..............................30 8.3 Protection Features ............................... 30 8.4 Operation Modes and Logic ..........................32 8.4.1 Fan Mode ................................32 8.4.2 Cooling Mode ..............................32 8.4.3 Heating Mode ..............................33 8.4.4 AUTO Mode ................................ 35 8.4.5 Drying Mode ............................... 36 8.4.6 Emergency Operation Function ........................
- Page 4 9.3.3 IPM Continuity Check ............................68 9.3.4 Outdoor AC Fan Motor Check ..........................68 9.3.5 Voltages on P and N ............................69 9.3.6 Pressure on Service Port ............................ 70 10. Unit Disassembly ................................72 10.1 Indoor Unit ................................72 10.1.1 Accessing the Terminal Block ........................... 72 10.1.2 Removing the Front Cover Housing .........................
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Page 5: 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 6: Caution
• Turn the main power off when cleaning or maintaining the product. • When the product is not used for a long time, disconnect the power supply plug or turn off the breaker. • Do not step on the outdoor unit. 1.3 Caution •... -
Page 7: Model/Part Names And Definitions
2. Model/Part Names and Definitions 2.1 Model Names and Definition A A H X X C D X X Example: 1 2 H 4 7 Y I M I AA – BTU capacity H –heat pump C – Rated Voltage Y: 115V Z: 230V D –... -
Page 8: Part Names
2.2 Part Names 2.3 Function/Feature Names and Definition Indoor Unit • Air Freshening Filter – Eliminate formaldehyde and other volatile organic compounds as well as harmful gases and odors. • Follow Me – With this feature, a temperature sensor is built into the remote control. The unit will use that temperature sensor for the ambient temperature so the air conditioner is following the user. -
Page 9: Dimension
Outdoor Unit • Refrigerant leak detection – The refrigerant leak detection function can better prevent the compressor from being damaged by the leaked refrigerant or compressor overload. • Self-diagnosis Function – The air conditioner’s control board will shut off the unit if there is any abnormal operation or parts failure and display a corresponding error code for the potential cause of the problem. - Page 10 (1080 mm) (226 mm) (335 mm) 30H48ZIMI 49.57” 11.1” 14.25” 36H46ZIMI (1259 mm) (282 mm) (362 mm)
- Page 11 Mounting Plate for Models: 9H47YIMI, 12H47YIMI, 12H47ZIMI 9 .1 3 " 7 .5 6 " 5 .0 4 " Indoor U nit Outline L e ft re a r w a l l R i g h t re a r w a l l h o l e 2 .5 "...
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Page 12: Outdoor Unit
3.2 Outdoor Unit More than 30cm(11.8in) More than 60cm(23.6in) (Service space) More than 30cm(11.8in) More than 60cm(23.6in) More than 70cm(27.6in) NOTE: The drawing above is for reference only. The appearance of actual units may be different. Model 9H47YOMI 30.31” 11.81” 21.85”... -
Page 13: Refrigerant Cycle Diagram & Performance
30H48ZOMI 37.24” 16.54” 31.89” 40.55” 26.50” 15.87” 36H46ZOMI (946 mm) (420 mm) (810 mm) (1030 mm) (673 mm) (403 mm) 4. Refrigerant Cycle Diagram & Performance 4.1 Refrigerant Cycle Diagram For models: 9H47YOMI, 12H47YOMI, 12H47ZOMI, 18H47ZOMI, 24H46ZOMI INDOOR OUTDOOR CHECK VALVE LIQUID SIDE (Heating Model only) 2-WAY VALVE... - Page 14 For models: 30H48ZOMI, 36H46ZOMI INDOOR OUTDOOR Electronic expansion valve LIQUID SIDE 2-WAY VALVE T3 Condenser temp. sensor HEAT EXCHANGE HEAT (EVAPORATOR) T4 Ambient T1 Room temp. EXCHANGE temp. sensor sensor (CONDENSER) T2 Evaporator temp. sensor GAS SIDE 4-WAY VALVE Accumulator 3-WAY VALVE T5 Discharge temp.
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Page 15: Performance Data
4.2 Performance Data 4.2.1 Cooling NOTE: Based on an indoor temperature of 80° F. Actual capacity may vary from test results shown below. 10000 14000 9352 9000 12728 12000 12000 8629 8000 11104 9935 7500 10000 6000 8000 6000 4000 4000 2000 2000... -
Page 16: Heating
4.2.2 Heating NOTE: Based on the indoor temperature of 55° F / 70° F. Actual capacity may vary from test results shown below. 12000 14000 12946 10615 12516 10000 12000 10000 12383 11231 10302 12000 9800 8870 10000 8000 10524 8659 7739 9042... -
Page 17: Wiring Diagram
5. Wiring Diagram 5.1 Indoor Unit For models: 9H47YIMI, 12H47YIMI, 12H47ZIMI, 18H47ZIMI, 24H46ZIMI For models: 30H48ZIMI, 36H46ZIMI... -
Page 18: Outdoor Unit
5.2 Outdoor Unit Model Voltage (V) Capacity (BTU) Type 9H47YOMI 9,000 HEAT PUMP 12H47YOMI 12,000 HEAT PUMP... - Page 19 Model Voltage (V) Capacity (BTU) Type 12H47ZOMI 12,000 HEAT PUMP...
- Page 20 Model Voltage (V) Capacity (BTU) Type 18H47ZOMI 18,000 HEAT PUMP 24H46ZOMI 24,000 HEAT PUMP...
- Page 21 Model Voltage (V) Capacity (BTU) Type 30H48ZIMI 30,000 HEAT PUMP 36H46ZIMI 36,000 HEAT PUMP...
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Page 22: Installation Details
6. Installation Details 6.1 Wrench Torque Sheet Outside Diameter Recommended Torque Max Torque Ф6.35mm 1/4” 11.063 lb.ft (1500 N.cm) 11.801 lb.ft (1600 N.cm) Ф9.52mm 3/8” 18.439 lb.ft (2500 N.cm) 19.177 lb.ft (2600 N.cm) Ф12.7mm 1/2” 25.815 lb.ft (3500 N.cm) 26.552 lb.ft (3600 N.cm) Ф15.9mm 5/8”... -
Page 23: First Time Installation
6.4 First Time Installation The indoor units and the pipes between indoor and outdoor units must be leak tested and evacuated in order to remove gas and moisture from the system. If not, the air and moisture in the refrigerant system can cause undesirable effects such as the ones shown below. -
Page 24: Adding Refrigerant For A Used System
6. Hold a vacuum for 120 minutes while the compound meter reads 500 microns (μmHg). If the meter does not indicate 500 microns after pumping for 30 minutes, continue checking the pressure for 20 minutes more. If the pressure can’t achieve 500 microns after pumping 50 minutes, check to see if there are some leakage points. - Page 25 4. Operate the air conditioner at the cooling mode. 5. Open the valves (low side) on the charge set and charge the system with liquid refrigerant. 6. When the electronic scale displays the proper weight (refer to the gauge and the pressure of the low side), disconnect the charge hose from the 3-way valve’s service port immediately and turn off the air conditioner before disconnecting the hose.
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Page 26: Re-Installation Of The Indoor Unit
6.6 Re-installation of the Indoor Unit 6.6.1. Collecting the Refrigerant into the Outdoor Unit Procedure: 1. Confirm that both the 2-way and 3-way valves are set to the opened position. Remove the valve stem caps and confirm that the valve stems are in the opened position. Be sure to use a hexagonal wrench to operate the valve stems. -
Page 27: Re-Installation Of The Outdoor Unit
6.7 Re-installation of the Outdoor Unit 6.7.1 Evacuation for the Whole System Procedure: 1. Confirm that both the 2-way and 3-way valves are set to the opened position. 2. Connect the vacuum pump to 3-way valve’s service port. 3. Evacuation for approximately two hours. Confirm that the compound meter indicates 500 microns (μmHg). -
Page 28: Refrigerant Charging
6.7.2 Refrigerant Charging Procedure: 1. Connect the charge hose to the charging cylinder, open the 2-way valve and the 3-way valve. Connect the charge hose which you disconnected from the vacuum pump to the valve at the bottom of the cylinder. If the refrigerant is R410a, make the cylinder bottom up to ensure liquid charge. -
Page 29: Operation Characteristics
7. Operation Characteristics Mode COOL HEAT Temperature ≥62°F ≤86°F ≥62°F Indoor Temperature (17°C) (30°C) (17°C) ～ ～ ～ 5°F 122°F* 5°F 86°F 32°F 122°F Outdoor Temperature ～ ～ ～ (-15°C 50°C) (-15°C 30°C) (0°C 50°C) * All models have this low ambient control characteristic CAUTION: 1. -
Page 30: Electronic Functions
8. Electronic Functions NOTE: The “x” variable for all graphs shown in this section is time. 8.1 Abbreviation T1: Indoor room temperature T2: Evaporator coil temperature T3: Condenser coil temperature T4: Outdoor ambient temperature T5: Compressor discharge temperature 8.2 Display Function Operating Symbols Displayed in Panel It displays the temperature settings when the air conditioner is operating. - Page 31 5. Inverter module protection The inverter module has a protection feature for current, voltage, and temperature. If any of these do not operate properly, the unit will shut off and display the corresponding error code. 6. Indoor fan delayed open function When the unit starts up, the louver will begin moving immediately but the indoor fan will open ten (10) seconds afterwards.
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Page 32: Operation Modes And Logic
8.4 Operation Modes and Logic 8.4.1 Fan Mode • Outdoor fan and compressor stop running. ° F ° F • Temperature setting is disabled and not shown. • Indoor fan can be set to high/med/low/auto. • Louver operates in the same way as cooling mode. •... -
Page 33: Heating Mode
The auto fan acts as beside: 8.4.2.4 Condenser temperature protection TP3<T3< TP3+5, the compressor frequency will decrease to the lower level until to F1 and then runs at F1. If TP3-3<T3< TP3, the compressor will keep running at the current frequency. TP3+5 TP3+5 Decrease... - Page 34 8.4.3.2 Outdoor Fan Logic The outdoor unit will be run at different fan speed according to T4. For different outdoor units, the fan speeds are different. 8.4.3.3 Indoor Fan Logic When the compressor is on, the indoor fan can be set to high/med/low/auto. And the anti-cold wind function has the priority.
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Page 35: Auto Mode
8.4.3.4 Defrost Mode After extended use, frost may build up on the coils on the outdoor unit. The development of frost can slow the rate of heat transfer which can cause many various problems such as overloading the system. To prevent this, the system has an automatic defrost mode according to the temperature T3, and also the compressor running time. -
Page 36: Drying Mode
If the machine switches mode between heating and cooling, the compressor will keep stopping for 15 minutes and then choose mode according to T1-Ts. If the setting temperature is modified, the machine will choose running function again. 8.4.5 Drying Mode The unit can also be used to dehumidify the air. -
Page 37: Auto-Restart Function
2. After the second hour, the indoor fan is fixed at low speed. (Anti-cold wind function has the priority in heating mode.) 3. After seven (7) hours of being activated, the air conditioner exit sleep mode and resume the mode and temperature that it was originally in. 4. -
Page 38: Silence Operation
a. The buzzer will emit a sound while the FOLLOW ME button is pressed to active this function. The error detective function of room temperature sensor will be still valid. b. When the follow me function is activated, the remote control display will indicate actual room temperature and the wall unit will display set point temperature. -
Page 39: Point Check Function
Temperature Compensation in Heating Factory Installation Height Temperature Position Setting Compensation °F Lower than 5.8 Between 5.9 – 6.5 Between 6.6 – 7.8 Between 7.9 – 8 .5 10. 8 Note: See Setup Manual on page 37 for changing 8.4.16 Point Check Function When indoor and outdoor unit were connected and started running, press the ”LED”... - Page 40 When the AC enters the information enquiry status, it will display one code value in the next 25s, and then quit the enquiry status. The details of each item are as follows. Enquiry Display value Meaning Remark information T1,T2,T3,T4, -1F,-1E,-1d,-1c,- -25,-24,-23,-22,-21,- 1.
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Page 41: Set-Up Changing Function
8.5 Set-Up Changing Function Some functions or settings, such as, temperature differential, filter reminder, louver position memory, auto-restart, anti-code air can be changed or disabled with the remote control according to different requests. Important: The function can only be accessed in 30 seconds when the batteries were installed in the remote control, and the indoor unit must be turned off. - Page 42 Setup Display (on remote Default Setup Name Setup Range Remark Code /indoor unit panel) Setting CH - Heat Pump unit operation HH - Heating Only temperature -2°C ~ +2°C -2 ~ 2 compensation in cooling "EC" will display on the indoor panel refrigerant detection while the refrigerant is not enough.
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Page 43: Troubleshooting
9. 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 44: Indoor Unit Error Codes
9.1 Indoor Unit Error Codes Display LED STATUS Indoor unit EEPROM parameter error Indoor / outdoor units communication error Zero-crossing signal detection error Indoor fan speed has been out of control Indoor room temperature sensor T1 open circuit or short circuit Evaporator coil temperature sensor T2 open circuit or short circuit Refrigerant leakage detection Overload current protection... -
Page 45: Diagnosis And Solution
9.2 Diagnosis and Solution 9.2.1 E0/F4: EEPROM Parameter Error Condition: Indoor or outdoor PCB main chip does not receive feedback from EEPROM chip. Possible Causes: - Installation mistake - PCB faulty Shut off the power supply and turn it on 5 seconds later. Is it still displaying the error code? If the EEPROM chip is welded on main... -
Page 46: E1: Indoor/Outdoor Communication Error
9.2.2 E1: Indoor/Outdoor Communication Error Condition: Indoor unit does not receive feedback from outdoor unit for 110 seconds, and this repeats four times continuously. Possible Causes: - Wiring mistake - Indoor or outdoor PCB faulty Power off, then restart the unit 2 minutes later Power off, then restart the unit 2 minutes later Measure Vs, is it positive fluctuation? Measure Vs, is it positive fluctuation? - Page 47 Testing the Voltage Use a multimeter and switch to DC voltage to test the 2 port and 3 port of the outdoor unit. The red pin of multimeter connects with 2 port while the black pin is for the 3 port. •...
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Page 48: E2: Zero-Crossing Detection Error
9.2.3 E2: Zero-Crossing Detection Error Condition: When PCB does not receive the zero crossing signal feedback for four (4) minutes or the zero crossing signal time interval is abnormal. Possible Causes: - Wiring mistake - PCB faulty Check if the connections and Correct the connections. -
Page 49: E3/F5: Fan Speed Out Of Control Error
9.2.4 E3/F5: Fan Speed Out of Control Error Condition: Indoor fan speed stays too low (300 RPM) for a certain time. Possible Causes: - Wiring mistake - Fan assembly faulty - Fan motor faulty - PCB faulty Power off, then restart the The unit operates normally. - Page 50 Index 1: 1: Indoor or Outdoor DC Fan Motor (control chip is in fan motor) Power on and when the unit is in standby, measure the voltage of pin1-pin3, pin4-pin3 in fan motor connector. If the value of the voltage is not in the range showing in below table, there must be something wrong with the PCB and need to be replaced.
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Page 51: E4/E5/F1/F2/F3: Temperature Sensor Open Or Short Circuit Error
9.2.5 E4/E5/F1/F2/F3: Temperature Sensor Open or Short Circuit Error Condition: Sampling voltage is lower than 0.06V or higher than 4.94V. Possible Causes: - Wiring mistake - Sensor faulty Measure resistance of the sensor. Refer to Section 9.3.2 for testing details. Testing the Resistance of the Sensor... -
Page 52: Ec: Refrigerant Leak Detection
9.2.6 EC: Refrigerant Leak Detection Condition: T : Temperature of the evaporator coil at the moment of startup During the first five (5) minutes of starting up, if T2 < T - 3.8°F (2°C) does not hold for four (4) continuous seconds three (3) times. Possible Causes: - T2 sensor faulty - Indoor PCB faulty... -
Page 53: F0: Overload-Current Protection
9.2.7 F0: Overload-current Protection Condition: An abnormal current rise is detected by checking the specified current detection circuit. Possible Causes: - Wiring mistake - Power supply problems - System blockage - Compressor malfunction - Outdoor PCB faulty... -
Page 54: P0: Ipm Malfunction Or Igbt Over-Current Protection
9.2.8 P0: IPM Malfunction or IGBT Over-current Protection Condition: The voltage signal that the IPM sends to the compressor drive chip is abnormal. Possible Causes: - Wiring mistake - IPM malfunction - Outdoor fan assembly faulty - Compressor malfunction - Outdoor PCB faulty For 9K to 24K units Check the wiring between main PCB Correct the connection or replace... - Page 55 Note: The pictures below are only for reference, they may be not same as the ones on your unit.
- Page 58 For 30K and 36K units Following the test procedure above by checking the resistance between every two ports of U, V, W of IPM and P, N. If any result of them is 0 or close to 0, the IPM is defective and has to be replaced. Otherwise, please follow the procedure below: Refer to Section 9.3.5.
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Page 59: P1: High Or Low Voltage Protection
9.2.8 P1: High or Low Voltage Protection Condition: An abnormal voltage rise or drop was detected by the specified voltage detection circuit. Possible Causes: - Power supply faulty - Refrigerant system faulty (i.e. leakage/blockage) - PCB faulty Stop the unit Check the power supply Check the connections and Correct the connections or... -
Page 60: P2: High Temperature Protection Of Compressor Top
9.2.9 P2: High Temperature Protection of Compressor Top Condition: The sampling voltage is not 5V. Possible Causes: - Power supply faulty - Refrigerant system faulty (i.e. leakage/blockage) - PCB faulty Check the air flow system Clear up the air inlet and outlet or the heat of indoor and outdoor units exchanger of indoor and outdoor units. -
Page 61: P4: Inverter Compressor Drive Error
9.2.10 P4: Inverter Compressor Drive Error Condition: An abnormal inverter compressor drive is detected by a special detection circuit, including communication signal detection, voltage detection, compressor rotation speed signal detection, etc. Possible Causes: - Wiring mistake - IPM malfunction - Outdoor fan assembly faulty - Compressor malfunction - Outdoor PCB faulty For 9K to 24K units... - Page 62 For 30K and 36K units Check the resistance between every two ports of U, V, W of IPM and P, N first. If any result of them is 0 or close to 0, the IPM is defective and has to be replaced. Otherwise, please follow the procedure below: Refer to Section 9.3.5.
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Page 63: P6: Low Pressure Protection Diagnosis And Solution
9.2.10 P6: Low Pressure Protection Diagnosis and Solution Condition: When the pressure of system reach a certain value, the pressure protector will switch off. After the pressure resume to normal, the protection code will extinguish. Possible Causes: - Wiring mistake - Pressure protector faulty - Outdoor fan assembly faulty - System problems... -
Page 64: General Testing And Measurements
9.3 General Testing and Measurements 9.3.1 Compressor Check Measure the resistance value of each winding by using the multimeter. Resistance @ 68°F (20°C) Position 9H47YOMI 12H47YOMI 12H47ZOMI 18H47ZOMI 24H46ZOMI 30H48ZOMI 36H46ZOMI ASN98D22UFZ ASN98D22UFZ ASN98D22UFZ ASM135D23UFZ ATF235D22UMT ATF250D22UMT ATF250D22UMT Blue – Red Blue –... -
Page 65: Temperature Sensor Check
9.3.2 Temperature Sensor Check Disconnect the temperature sensor from the PCB and measure the resistance using a multimeter. The variables for the different temperature sensors are shown below. T1: Room temperature sensor T2: Indoor coil temperature sensor T3: Outdoor coil temperature sensor T4: Outdoor ambient temperature sensor T5(TP): Compressor discharge temperature sensor Multimeter... - Page 66 Temperature Sensor Resistance Value Table for T1, T2, T3, T4 °C °F kΩ °C °F kΩ °C °F kΩ °C °F kΩ 115.266 12.6431 2.35774 0.62973 108.146 12.0561 2.27249 0.61148 101.517 11.5 2.19073 0.59386 96.3423 10.9731 2.11241 0.57683 89.5865 10.4736 2.03732 0.56038 84.219...
- Page 67 Temperature Sensor Resistance Value Table for T5(TP) °C °F kΩ °C °F kΩ °C °F kΩ °C °F kΩ 542.7 75.24 15.73 4.426 511.9 71.86 15.16 4.294 68.66 14.62 4.167 455.9 65.62 14.09 4.045 430.5 62.73 13.59 3.927 406.7 59.98 13.11 3.812 384.3...
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Page 68: Ipm Continuity Check
9.3.3 IPM Continuity Check First turn off the power to the unit and wait approximately 20 seconds to allow the electrolytic capacitors to fully discharge. Next remove the IPM from the PCB. Use a multimeter to measure the resistance between P & UVWN; UVW & N. See the table below for proper resistance values. -
Page 69: Voltages On P And N
9.3.5 Voltages on P and N Normal Voltage on P and N 208-240VAC (1-phase, 3-phase) 380-420VAC (3-phase) Standby Around 310 VDC Around 530 VDC Operating With passive PFC With partial active With fully active module PFC module PFC module >200 VDC >310 VDC >370 VDC >450 VDC... -
Page 70: Pressure On Service Port
9.3.6 Pressure on Service Port Cooling ° F ° C (23.89) (29.44) (35) (40.56) (46.11) 10.1 70/59 75/63 10.7 80/67 11.2 ° F ° C (23.89) (29.44) (35) (40.56) (46.11) 70/59 75/63 80/67 ° F ° C (23.89) (29.44) (35) (40.56) (46.11) 70/59... - Page 71 Heating 3° F 57/53 47/43 37/33 27/23 17/13 ° C (13.89/11.67) (8.33/6.11) (2.78/0.56) (-2.78/-5) (-8.33/-10.56) 30.3 28.5 25.3 22.8 20.8 32.5 30.0 26.6 25.4 23.3 33.8 31.5 27.8 26.3 24.9 ° F 57/53 47/43 37/33 27/23 17/13 ° C (13.89/11.67) (8.33/6.11) (2.78/0.56) (-2.78/-5)
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Page 72: Unit Disassembly
10. Unit Disassembly Refer to the section below to see how to get to various parts of the indoor and outdoor units. The model used for the demonstration down below is the 24H45YZIMI/24H45ZOMI. 10.1 Indoor Unit 10.1.1 Accessing the Terminal Block Follow the following steps to gain access to the terminal block. -
Page 73: Removing The Front Cover Housing
10.1.2 Removing the Front Cover Housing Follow the following steps to remove the front cover housing from the indoor unit. 1. Remove the screw(s) on the bottom of the unit under the front cover. Number of screws will depend on model. 2. - Page 74 4. When removing the front cover housing, be aware there is a wire connecting the cover housing and the indoor PCB. Be sure to disconnect this connector. 5. When the front cover housing is removed, the unit can be properly serviced.
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Page 75: Removing The Indoor Pcb
10.1.3 Removing the Indoor PCB First follow the steps to remove the front cover housing from the previous section, then follow the steps below to remove the indoor PCB. 1. First, remove the screw holding the cover on the electronics box. - Page 76 2. Pay attention to the clip on the top of the box holding the cover in. Unhook the clip. 3. Lift the cover up from the bottom and pull out to remove cover. The picture on the right shows what the electronics box looks like with the cover removed.
- Page 77 4. Disconnect the transformer secondary 5. Disconnect the (white) horizontal louver connector. connector from the PCB board. 6. Disconnect the power, signal, and ground wires 7. Disconnect the transformer primary connector. going to the top of the terminal block. 8. Disconnect the (CN3) evaporator coil sensor. 9.
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Page 78: Removing The Electronics Box
10.1.4 Removing the Electronics Box Follow the steps shown in the “Removing the Indoor PCB” in the previous section. The transformer and circuit board power wires do not need to be disconnected to remove the electronics box, however, they may need to be disconnected to gain access to other connectors that need to be disconnected. -
Page 79: Outdoor Unit
10.2 Outdoor Unit 10.2.1 Removing the Outdoor PCB 1. Remove the nine (9) screws on the top lid of the condenser unit. 2. Lift and remove the lid from the top of the unit. 3. Remove the two screws on the side panel of the outdoor unit. - Page 80 4. There are hooks on the side edges of the side panel. First push down on the panel to “unhook” it and then pull it forward to remove. Picture of outdoor unit with side panel removed...
- Page 81 5. Remove the wires from the clips holding them in place. 6. There are four tabs that hold the plastic of the PCB in place. Use a flathead screwdriver or some kind of wedging tool, if necessary, to unhook the tabs.
- Page 82 7. Then lift the PCB assembly off the unit. NOTE: All wires are still connected.
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