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Introduction Table of Contents Safety Precautions ................................4 4 ................................Warning and Caution Icons ................................Introduction to System ................................Specifications for Proper Operation Theory of Operation ................................INTRODUCTION PAGE 3...
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Safety Precautions · Read carefully to ensure correct installation. Failure to follow any WARNING is likely to result in grave consequences such as death or serious injury. WARNING: Failure to follow any CAUTION may in some cases result in grave consequences. CAUTION: The following safety symbols are used throughout this manual: Be sure to observe this instruction...
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Introduction Introduction the System The inverter compressor system in the outdoor unit will vary Single Zone Ductless Split System Heat Pumps feature a wall the refrigerant flow and indoor air volume levels to match mounted indoor unit that receives refrigerant from an inverter the heating or cooling demand inside the conditioned space.
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Outdoor Unit Controls & Components Table of Contents Unit Introduction ................................8 ........8 ......
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Outdoor Unit Introduction The outdoor unit has two circuit boards, an Inverter Power Module (IPM) that drives the compressor and a main control board (PCB) that manages system functions and inverter calculations. Temperature Sensors monitor key temperatures throughout the system to manage operational decisions. 4-Way Valve Accumulator Compressor...
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PCB (1) CN1,CN2-Connector for power N and L CN3-Connector for ground CN22 (09k and 12k), CN23 (18k and 24k) - 5-G-15 VDC connections for power to the IPM CN8 and CN9 (09k and 12k), CN9 and CN10 (18k and 24k) - 230 VAC output from the PCB to the IPM CN21 (09k and 12k), CN22 (18k and 24k) - Connection for the fan motor...
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Compressor Terminal Block The 18K and 24K units are 208/230 volt single phase. The The compressor is a three phase DC inverter-driven rotary. 9K and 12K units are 120 volt. All models use terminals 1 The compressor is capable of variable speed operation. and 2 as incoming power wiring.
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Discharge Temperature Sensor Ambient Temperature Sensor The Ambient Sensor is a negative coefficient thermistor that The Discharge Sensor is a negative coefficient thermistor will change resistance in response to temperature changes. that senses the temperature of the compressor hot gas. The PCB monitors the temperature of the outdoor air to The PCB will make inverter speed changes in response determine outdoor fan speed requirements and compressor...
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During COOL MODE operation, the valve meters low 4-Way Valve pressure refrigerant to the indoor coil. During HEAT MODE operation, the valve meters low pressure refrigerant to the outdoor coil. Accumulator The 4-Way Valve redirects the flow of refrigerant to reverse the functions of the indoor and outdoor coils.
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Indoor Unit Controls and Components Table of Contents Unit Introduction ..................................14 ..............................14 Control Board .................................... 15 Terminal Block .................................. 16 Display ..................................... 16 Ambient Temperature Sensor ............................16 Piping Temperature Sensor .............................. 16 Louver Motor ................................... 17 Fan Motor ..................................
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Indoor Unit Introduction The indoor unit is mounted high on the wall to provide conditioned air to the space.Features of the system include: variable speed blower operation that speeds up and slows down with changes in demand,moving louvers to direct air, indoor air temperature sensing, evaporator coil temperature sensing, consumer operation display,evaporator coil with metering device located in outdoor unit, and an emergency operation switch.
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CN21, CN52-Connector for power N and L SW1- Connector for emergency ON/OFF switch SW2-1-Select remote code A or B CN23-Connector for communication between 2-Select enable or disable room card indoor and outdoor unit 3,4- Select EEPROM code 22,25,33 or 35 CN6-Connector for thermistors CN3 and CN1 (09k and 12k) - transformer connection CN8, CN9 (09k and 12k), or CN9 (18k and 24k) -...
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Terminal Block Ambient Temperature Sensor The terminal block receives electrical power from the outdoor unit.Terminals 1 and 2 are connected to terminals The Ambient Sensor is a negative coefficient thermistor 1 and 2 of the outdoor unit. This wiring supplies power to the that will decrease in resistance with increases in room air indoor unit.
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Stepper Motor and Louver Emergency Button The Stepper Motor moves the louver up and down (09k and 12k), and also right to left (18k and 24k). The motors can be set to move automatically or to several If the remote control is non-functional, the Emergency fixed positions.
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DIP Switch DIP Switch Settings Display Switch Settings The PCB for the indoor unit of the Tempo series of The PCB for the indoor unit of the Tempo series of single zone mini-splits has a set of DIP switches that must be set zone mini-splits has a set of Display switches that must be set when replacing the PCB.
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Sequence of Operation Table of Contents System Power .................................. 20 Cool Mode ..................................20 Overview ......................................20 Indoor Unit ..................................... 20 Temperature Sensors ..................................20 Communication ..................................... 20 Outdoor Unit ....................................20 Temperature Sensors ..................................21 Call to Terminate Cooling ................................21 Freeze Protection....
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Indoor Unit System Power To enter the cool mode, point the infrared remote control at The 240 VAC power for the system connects to terminals the indoor unit , press the power button, then press the COOL 1(N), 2(L), and ground of the outdoor unit terminal block. This button if not already set.
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Temperature Sensors (Tr = room temperature Ts = set temperature) Four temperature sensors provide temperature information operates in cold air proof operation to the PCB for control of the system. If Tr > Ts+, the outdoor unit turns off and the indoor fan The ambient sensor provides the temperature of the air will circulate any residual heat remaining in the coil.
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Temperature Sensors Defrost Four sensors provide temperature information to the main board When the system initiates a call for defrost, the indoor fan for control of the system during heat mode. motor stops. The indoor unit display will not change. The ambient sensor provides the temperature of the air drawn The system will cycle through the defrost operation.Any into the evaporator coil.
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Indoor Unit When a call for defrost initiates, the compressor slowly ramps down, then runs for 30 seconds at a very low speed. The PCB will signal the louver stepper motor to open the to either a stationary position or one of several oscillating 1 minute from the call for defrost, the 4WV switches to cooling, modes.
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3. Compressor Overcurrent Protection If the current draw of the compressor at start-up is greater than the values in the chart below for approximately 3 seconds, the compressor will stop and a code will be indicated at the outdoor unit. After 3 minutes the compressor will restart. If the overcurrent condition occurs 3 times in 20 minutes, the system will lock out.It will be necessary to remove power to the system to reset the lock outcondition.
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System Model Name Outdoor 1U09TE1VHA 1U12TE1VHA 1U18TE2VHA 1U24TE2VHA Indoor AW09TE1VHA AW12TE1VHA AW18TE2VHA AW24TE2VHA Rated Capacity Btu/hr Capacity Range Btu/hr 3,800~12,000 4,100~12,500 5,000~19,000 6,500~26,000 Rated Power Input W Cooling Moisture Removal Pt./h Rated Heating Capacity 47°F Btu/hr Heating Capacity Range Btu/hr 4,100~12,000 4,500~16,000 5,400~22,000...
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Check This First Outdoor Unit ................................29 Check This First Indoor Unit ................................30 Wiring Diagram Reference...................................31 Error Code (Indoor/outdoor) F1/LED1: 2 Flash .....................................32 F2/LED1: 24 Flash ....................................34 F3/LED1: 4 Flash ....................................36 F4/LED1: 8 Flash ....................................38 F6/LED1: 12 Flash F7/LED1: 11 Flash F21/LED1: 10 Flash F25/LED1: 13 Flash E1/LED1: No Flash...
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Troubleshooting Conditions Needed for Basic Operation Check This First Outoor Unit 3-minutes of time delay from the call for heating or cooling Models: ASH109CRAWA Line voltage available at: • 1 (N) and 3 (C): 0-80 ASH112CRAWA uating 1. TERMINAL STRIP - 1(N) & 2 (L) ASH118CRDWA •...
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Indoor Unit relevant color-coded There is 230 VAC (+/- 10%) at terminal Models: test positions. strip connections 1(N) and 2(L), and ASYW09CRAWA no more than a 2% deviation between ASYW12CRAWA each leg and ground? ASYW18CRDWA ASYW24CRDWA Determine source of lost...
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VHA AW12ES2VHA AW18ES2VHA AW24E Indoor Board Diagram Troubleshooting Check This First - Indoor Unit Wiring Diagram Reference Sensor Resistance Table Normal (K °F °C SENSORS SENSORS SENSORS -0.4 75.44 235.90 5494.21 64.30 196.61 4558.19 10.4 54.99 164.40 3795.39 14.0 49.62 146.15 3365.73 21.2...
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Cycle power to the outdoor (IPM power module protection) before the compressor starts? Complete the “Check This First” Flow Chart before continuing. Models: ASYW09CRAWA ASYW12CRAWA Replace IPM DC voltage from P-U, P-V, P-W is 150-160VDC, ASYW18CRDWA DC voltage from N-U, N-V, N-W 150-160VDC?
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Troubleshooting Outdoor Board Diagram Error Code: F1/LED1: 2 Flash Wiring Diagram Reference OUTDOOR UNIT WIRING DIAGRAM 0011509127 COMPRESSOR Electrical Shock Hazard Riesgo de Descarga Eléctrica Risque de choc électrique Capacitor retains charge a er El capacitor re ene carga una vez Le condensateur conserve sa charge après la coupure de l’alimenta on électrique.
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Overcurrent of the Compressor The set temperature is 5°F max. Complete the “Check This First” Flow from the room temperature? Chart before continuing. Models: ASYW09CRAWA ASYW12CRAWA ASYW18CRDWA Does the error code display ASYW24CRDWA before the compressor starts? ASH109CRAWA...
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Troubleshooting Outdoor Board Diagram Error Code: F2/LED1: 24 Flash Wiring Diagram Reference OUTDOOR UNIT WIRING DIAGRAM 0011509127 COMPRESSOR Electrical Shock Hazard Riesgo de Descarga Eléctrica Risque de choc électrique Capacitor retains charge a er El capacitor re ene carga una vez Le condensateur conserve sa charge après la coupure de l’alimenta on électrique.
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Communication Fault Between IPM and test positions. on the PCB (CN2 & CN1)? Outdoor PCB Complete the “Check This First” Flow Chart before continuing. Models: ASYW09CRAWA Check incoming power Line voltage at ASYW12CRAWA from building AC-L OUT & AC-N ASYW18CRDWA...
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Troubleshooting Outdoor Board Diagram Error Code: F3/LED1: 4 Flash Wiring Diagram Reference OUTDOOR UNIT WIRING DIAGRAM 0011509127 COMPRESSOR Electrical Shock Hazard Riesgo de Descarga Eléctrica Risque de choc électrique Capacitor retains charge a er El capacitor re ene carga una vez Le condensateur conserve sa charge après la coupure de l’alimenta on électrique.
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The discharge line temperature test positions. Temperature is below 230°F/110°C? Complete the “Check This First” Flow Chart before continuing. Models: ASYW09CRAWA Refrigerant static test ASYW12CRAWA ASYW18CRDWA indicates head pressure ASYW24CRDWA allow the discharge line to cool converted to temperature is...
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Troubleshooting Outdoor Board Diagram Error Code: F4/LED1: 8 Flash Wiring Diagram Reference OUTDOOR UNIT WIRING DIAGRAM 0011509127 COMPRESSOR Electrical Shock Hazard Riesgo de Descarga Eléctrica Risque de choc électrique Capacitor retains charge a er El capacitor re ene carga una vez Le condensateur conserve sa charge après la coupure de l’alimenta on électrique.
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E2/LED1: No Flash temperature located in the respective Indoor Coil Temperature Sensor Failure chart ? (See Reverse side.) Complete the “Check This First” Flow Chart before continuing. Models: ASYW09CRAWA Replace sensor. ASYW12CRAWA Go to next step ASYW18CRDWA to test the board ASYW24CRDWA...
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Troubleshooting Error Code: F6/LED1: 12 Flash, F7/LED1: 11 Flash, F21/LED1: 10 Flash, F25/LED1: 13 Flash, E1/LED1: No Flash, E2/LED1: No Flash Outdoor Board Diagram Wiring Diagram Reference OUTDOOR UNIT WIRING DIAGRAM 0011509127 COMPRESSOR VHA AW12ES2VHA AW18ES2VHA AW24ES2 Electrical Shock Hazard Riesgo de Descarga Eléctrica Risque de choc électrique Capacitor retains charge a er...
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Complete the “Check This First” Flow Check the incoming voltage. Chart before continuing. Is it 208/230VAC (+/- 10%) between L1/L2? Models: 104/115VAC (+/- 10%) from L1 to GROUND and L2 to GROUND? ASYW09CRAWA ASYW12CRAWA Fix incoming power supply ASYW18CRDWA ASYW24CRDWA Replace the fan motor...
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Troubleshooting Outdoor Board Diagram Error Code: F8/LED1: 9 Flash Wiring Diagram Reference OUTDOOR UNIT WIRING DIAGRAM 0011509127 COMPRESSOR Electrical Shock Hazard Riesgo de Descarga Eléctrica Risque de choc électrique Capacitor retains charge a er El capacitor re ene carga una vez Le condensateur conserve sa charge après la coupure de l’alimenta on électrique.
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Loss of Compressor Synchronization test positions. min. and turned back on, Complete the “Check This First” Flow the compressor runs? Chart before continuing. Models: ASYW09CRAWA ASYW12CRAWA ASYW18CRDWA Momentary loss ASYW24CRDWA A windings or grounding Replace of building power...
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Troubleshooting Outdoor Board Diagram Error Code: F11/LED1: 18 Flash Wiring Diagram Reference OUTDOOR UNIT WIRING DIAGRAM 0011509127 COMPRESSOR Electrical Shock Hazard Riesgo de Descarga Eléctrica Risque de choc électrique Capacitor retains charge a er El capacitor re ene carga una vez Le condensateur conserve sa charge après la coupure de l’alimenta on électrique.
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EEPROM Error relevant color-coded After 10 minutes with the power Complete the “Check This First” Flow test positions. Chart before continuing. power turned back on? Models: ASYW09CRAWA ASYW12CRAWA ASYW18CRDWA ASYW24CRDWA The 10-minute Replace PCB reboot has ASH109CRAWA corrected the...
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There is 5 VDC at CN6 on the Indoor relevant color-coded PCB across the black senor wires? Complete the “Check This First” Flow test positions. Chart before continuing. Models: ASYW09CRAWA ASYW12CRAWA Replace PCB The Coil and Ambient ASYW18CRDWA Sensors’ resistances are ASYW24CRDWA...
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Complete the “Check This First” Flow no splices or loose connections? Chart for both ID and OD units before continuing. Models: ASYW09CRAWA ASYW12CRAWA Is the Indoor PCB LED Reposition on correct ASYW18CRDWA terminals, replace wire if...
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Troubleshooting Outdoor Board Diagram Error Code: E7/LED1: 15 Flash Wiring Diagram Reference OUTDOOR UNIT WIRING DIAGRAM 0011509127 COMPRESSOR Electrical Shock Hazard Riesgo de Descarga Eléctrica Risque de choc électrique Capacitor retains charge a er El capacitor re ene carga una vez Le condensateur conserve sa charge après la coupure de l’alimenta on électrique.
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Check the incoming voltage. Is it 208/230VAC (+/- 10%) between L1/L2? 104/115VAC (+/- Complete the “Check This First” Flow 10%) from L1 to GROUND and L2 to GROUND? Chart before continuing. Models: ASYW09CRAWA ASYW12CRAWA ASYW18CRDWA Fix incoming ASYW24CRDWA the fan by hand. Does it...
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A AW12ES2VHA AW18ES2VHA AW24ES2 Indoor Board Diagram Troubleshooting Error Code: E14 Wiring Diagram Reference PAGE 43 REFERENCE INFORMATION ERROR CODES and Troubleshooting PAGE 52...
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power in the 103 to 126 VAC range. This power remains long Checking System Components enough to switch the valve piston from cooling to heating mode. Since the refrigerant pressure flowing from the valve body NOTE: Component resistance readings shown in this section capillary tube holds the piston in place, allowing hot gas to redirect into the indoor coil, the VAC signal is no longer needed based on model being tested.
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type being tested. wiring and connections to the PFC Reactor as well as the PFC Reactor itself. Repair or replace as necessary. Coil sensor Ambient sensor Step 3 Reconnect the wiring to the module board at the conclusion Step 1 of the test.
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Step 3 test. Step 1 inaccurate readings. Step 2 resistance values. Lead Step 3 test. ERROR CODES AND PROBLEM SOLVING PAGE 55...
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HA AW12ES2VHA AW18ES2VHA AW24ES2 Indoor Board Diagram 18-24K 56 5 Fan motor Ion generator Fresh air W ire controller Up-down stepmotor left stepmotor Room card WiFi EMERGENCY SWITCH RECEIVER DISPLAY AMBIENT TEMP SENSOR PIPING TEMP SENSOR Right stepmotor REFERENCE INFORMATION PAGE 62...
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Module Board Schematic Outdoor Board Diagram CN50 and @2 cannot exist at the same time but must keep one of them. PAGE 65 REFERENCE INFORMATION...