1. Manuals
  2. Brands
  3. Rio Manuals
  4. Air Conditioner
  5. RIO09HP115V1A
  6. Installation, service & troubleshooting

Rio RIO09HP115V1A Installation, Service & Troubleshooting

Ductless
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
DUCTLESS SYSTEM
Installation, Service & Troubleshooting
Models:
RIO09HP115V1A
RIO12HP115V1A
RIO09HP230V1A
RIO09HP230V1B
RIO12HP230V1A
RIO12HP230V1B
RIO18HP230V1A
RIO24HP230V1A

Advertisement

Table of Contents
loading

Summary of Contents for Rio RIO09HP115V1A

  • Page 1 DUCTLESS SYSTEM Installation, Service & Troubleshooting Models: RIO09HP115V1A RIO12HP115V1A RIO09HP230V1A RIO09HP230V1B RIO12HP230V1A RIO12HP230V1B RIO18HP230V1A RIO24HP230V1A...

  • Page 2: Table Of Contents

    Table of Contents Safety Precautions & Warnings......................... Model Number Identification..........................Physical & Electrical Data..........................5 - 7 Product Introduction............................Refrigeration Cycles and Components......................9 - 13 Indoor & Outdoor Components........................14 - 15 Basic & Protection Functions..........................16 - 21 Remote Control Operation..........................

  • Page 3: Safety Precautions & Warnings

    Safety Precautions & Warnings Warning Caution Installing, starting up, and servicing air conditioner can be • Never install the unit in a place where a combustible hazardous due to system pressure, electrical components, gas might leak, or it may lead to fire or explosion. and equipment location, etc.

  • Page 4: Model Number Identification

    Model Number Identification Product Catalog Number-Nomenclature Example RIO24HP230V1AH 230V S - System O - Outdoor H - Indoor High Wall D - Indoor Duct C - Indoor Cassette F - Indoor Floor/Ceiling TERRA Revision Level Style/Color Designation 09 - 9,000 btuh 12 - 12,000 btuh 18 - 18,000 btuh 24 - 24,000 btuh...

  • Page 5: Physical & Electrical Data

    Physical & Electrical Data, cont. Model RIO09HP115V1A RIO12HP115V1A System Type Heat Pump Power Supply 115v / 60Hz 115V / 60Hz Rated Current Cooling Amps 15.0 Rated Current Heating Amps 15.5 System Performance Cooling Cap (Min/Max) Btu/h 9,000 (3,500-11,000) 11,800 (3,300-12,500)
  • Page 6 Physical & Electrical Data, cont. RIO12HP230V1A & 1B Model RIO09HP230V1A & 1B System Type Heat Pump Power Supply 208-230v / 60Hz 208-230V / 60Hz Rated Current Cooling Amps Rated Current Heating Amps System Performance Cooling Cap (Min/Max) Btu/h 9,000 (3,800-11,500) 12,000 (3,300-12,500) Heating Cap (Min/Max) Btu/h...
  • Page 7 Physical & Electrical Data, cont. Model RIO18HP230V1A RIO24HP230V1A System Type Heat Pump Power Supply 208-230v / 60Hz 208-230V / 60Hz Rated Current Cooling Amps 11.5 Rated Current Heating Amps 11.8 13.0 System Performance Cooling Cap (Min/Max) Btu/h 18,000 (4,500-21,000) 22,000 (6,400-24,000) Heating Cap (Min/Max) Btu/h 19,200 (4,000-23000)

  • Page 8: Product Introduction

    9000 btuh to 24,000 btuh providing heating and cooling. All comfort settings Indoor Display are controlled by a remote control. The RIO unit has many features to enhance comfort and efficiency. The operation of these features will be explained later in this service manual.

  • Page 9: Refrigeration Cycles And Components

    Refrigeration Cycles and Components Refrigeration Components Outdoor Unit Indoor Unit Strainer Temperature Sensor Heat Exchanger Temperature Sensor Heat Exchanger 4-way Electronic Expansion Valve Discharge Sensor Accumulator Compressor Note: Component locations may vary depending on models.

  • Page 10: Cooling Mode

    Cooling Mode Refrigeration Cycles and Components Cooling Mode Outdoor Unit Strainer Indoor Unit Temperature Heat Sensor Strainer Exchanger *Electronic expansion valve Heat Exchanger 4-way 4-way valve valve Temperature Sensor Discharge Silencer Discharge Temperature Sensor Accumulator not on all sizes...
  • Page 11 Refrigeration Cycles and Components Cooling Mode A. Hot gas is discharged from the compressor. The temperature of the gas is monitored by the Discharge Temperature sensor and sent to the outdoor control panel. B. The hot gas is directed through the 4-way valve, then enters the outdoor coil. The hot gas will be slightly subcooled, however there are no pressure ports to take measurements.
  • Page 12 Refrigeration Cycles and Components Heating Mode Outdoor Unit Filter Temperature Heat Indoor Unit Sensor Exchanger *Electronic expansion valve Heat Exchanger 4-way 4-way valve valve Temperature Sensor Discharge Silencer Discharge Temperature Sensor Accumulator not on all sizes...
  • Page 13 Refrigeration Cycles and Components Heating Mode A. Hot gas is discharged from the compressor. The temperature of the gas in monitored by the Discharge Temperature sensor and sent to the outdoor control panel. B. The hot gas is directed through the 4-way valve to the appropriate indoor coil making the line a hot gas line. C.

  • Page 14: Indoor & Outdoor Components

    Indoor Unit Components Indoor Unit Components RIO 12,000 btuh model Other RIO models may very slightly. Indoor Circuit Board Fan Motor Indoor Tube Thermistor Swing Motor Ambient Temperature Sensor Note: Component locations may vary depending on models.
  • Page 15 Outdoor Unit Components Outdoor Unit Components RIO 12,000 btuh Outdoor Unit Other RIO models may very slightly. Outdoor Sensor, (mounted AP1 Board on outside of coil) Outdoor Fan 4-Way Valve Capacitors Expansion Valve Exhaust Temp Sensor Outdoor Tube Crankcase Heater...

  • Page 16: Basic & Protection Functions

    Basic & Protection Functions Basic Functions The compressor should stay off for at least 3 minutes before starting the unit. The compressor circuit has a 3 minute delay if the compressor is de-energized during a run cycle. If the compressor starts from a de-energized cycle, there will be no time delay.
  • Page 17 Basic & Protection Functions Basic Functions 3)Heating Mode Heating Process When the indoor ambient drops 40 F below the preset temperature, the unit will start the heating cycle. The outdoor fan, compressor and 4-way valve will operate. The indoor fan will operate in the “Cold Air Prevention” mode in which the indoor fan will have a 2 minute delay after the call for heating.
  • Page 18 Basic & Protection Functions Basic Functions Defrost Process You may force a defrost in heat mode by pressing the “+” and “-” buttons alternately three times within 5 seconds. 1) The unit will enter defrost when the following conditions are met: A.
  • Page 19 Basic & Protection Functions Basic Functions Cold Air Prevention (Heating mode with compressor running) The system guards against discharging cold air in heating mode. It will delay the indoor fan until the evaporator coil has warmed up to discharge warm, comfortable air into the room. 1) When the T ambient <...
  • Page 20 Basic & Protection Functions Protection Functions Common Protection Functions and Fault Displays Coil High Temperature Protection = measured temperature of outdoor coil in cooling mode, measured temperature of indoor coil in heating mode. tube 1) Outdoor Coil High Temperature Protection - In cooling mode the software will monitor the outdoor coil for an abnormal high temperature condition.
  • Page 21 Basic & Protection Functions Protection Functions 8) Communication Fault If the unit fails to receive correct signals for a 3 minutes, communication fault will occur and the whole system will stop and a “E6” will be displayed on the front panel of the indoor unit.

  • Page 22: Remote Control Operation

    Remote Control Operation Remote Buttons Note: This remote control is used in other models and some features may or may not be available. Consult the owners manual for specific features for your model. There should be no obstructions between the remote control and the indoor unit for proper operation.
  • Page 23 Remote Control Operation Display Icons 15. Mode icons 16. Lock icon 17. Light icon 18. Sleep icon 19. Temperature icon 20. Up & down swing icon 21. Left & right swing icon 22. Set time icon 23. Digital display 24. Fan speed icon Replacing Batteries: 1.
  • Page 24 Product Introduction Remote Control Functions 1)On/Off The on-off state will change with each button press. 2) Mode Setting Each time you press this button, a mode is selected in a sequence that goes from AUTO, COOL, DRY, FAN,and HEAT After energization, AUTO mode is defaulted. In AUTO mode, the set temperature will not be displayed on the LCD, and the unit will automatically select the suitable operation mode in accordance with the room temperature to make indoor room comfortable.
  • Page 25 Product Introduction Remote Control Functions 9) X-Fan Allows fan to run after cooling cycle to dry off the coil and inhibit the growth of bacteria and mildew. Works with “Auto” mode. 10)Temp Button Toggles the display between set temperature, indoor temperature and outdoor temperature. 11) Timer On Button Press TIMER button at unit ON to set TIMER OFF;...

  • Page 26: Refrigerant Lines Connection, Evacuating And Charging

    Refrigerant Lines Connection, Evacuating and Charging Refrigerant Lines Preparation & Connection The refrigerant lines should be kept sealed until ready to be connected. Follow the following steps to ensure a quality leak proof installation: Step 1. Refrigerant Line Connection Carefully bend and cut the tubing to prepare for flaring. Use a flaring tool designed for R410a, following the recommended manufacturer’s procedure.
  • Page 27 1. Determine addition refrigerant charge. The RIO single zone units contain a factory charge adequate for up to a total length of refrigerant line as indicated in the chart below. Additional refrigerant will need to be added for total lengths over the listed length.
  • Page 28 Refrigerant Charging Procedure 2. Leak Testing Follow the procedures for leak testing with nitrogen prior to adding charge on a new installation or existing one suspected for leaks. See preceding page. 3. Attach hoses to the unit and vacuum pump 5/16”...
  • Page 29 Refrigerant Charging Procedure, cont. 5. Begin adding additional refrigerant Charging should be completed with the unit off (not running) and through the liquid side with liquid refrigerant. If there are no ports on the liquid side, use the gas side port connection, charging with liquid. Record the amount of additional charge for future reference.

  • Page 30: Installation And Filter Maintenance

    Installation Proper installation site is vital for correct and efficient operation of the unit. Avoid the following sites where: • Strong heat sources, vapors, flammable gas or volatile liquids are emitted. • High-frequency electro-magnetic waves are generated by radio equipment, welders and medical equipment. •...
  • Page 31 Installation Mounting Plate Installation 1. The mounting plate should be installed horizontally and level. 2. Measure the center of the indoor unit. Please note, that depending on model, the center of the bracket may not correspond with the center of the unit. 3.
  • Page 32 Installation Install Drain Hose 1. Connect the drain hose to the outlet pipe of the indoor unit using appropriate connections. 2. Insulate the condensate to prevent condensation. 3. Fasten the condensate, lineset and wring together to prevent damage and movement. Slant the drain hose downward for smooth drainage.
  • Page 33 Installation Pressure and Leak Test 1. Use only dry nitrogen with a pressure regulator for pressurizing unit. Pressurize with 150 psi of dry nitrogen. 2. Apply soap and water to check whether the joints are leaky. A leak detector can also be applied for a leakage test.
  • Page 34 Installation Connect the Outdoor Wiring 115 volt unit shown 115 Volt unit 1. Remove the handle on the right side plate of the outdoor unit. 2. Connect wiring from indoor unit to 1,2,3 & ground, being careful to match color code of indoor connections.
  • Page 35 Filter Maintenance and Emergency Operation Cleaning Air Filter 1. Lift open the front panel as shown on the picture 2. The first stage filter can be cleaned with a vacuum cleaner or by washing with a mild soap and < 113º F water. 3.

  • Page 36: Electrical Schematics

    Electrical Schematics 9K, 12K 115V Indoor Board Symbol Color Symbol Symbol Color Symbol White Brown Yellow Blue Black YEGN Yellow/Green Protective Earth These circuit diagrams are subject to change without notice, please refer to the one supplied with the unit.

  • Page 37: Outdoor Unit

    Electrical Schematics 9K, 12K 115V Outdoor Unit Symbol Parts Name Symbol Parts Name Neutral Wire, 110v Live Wire White 4-Way Valve Yellow Electric Expansion Valve Reactor Brown COMP Compressor Blue Protective Earth Black Overload YEGN Yellow/Green These circuit diagrams are subject to change without notice, please refer to the one supplied with the unit.
  • Page 38 Electrical Schematics 9K, 12K 230V Indoor Board 9 & 12k These circuit diagrams are subject to change without notice, please refer to the one supplied with the unit.
  • Page 39 Electrical Schematics 9K, 12K 230V Outdoor Unit These circuit diagrams are subject to change without notice, please refer to the one supplied with the unit.
  • Page 40 Electrical Schematics Indoor Unit These circuit diagrams are subject to change without notice, please refer to the one supplied with the unit.
  • Page 41 Electrical Schematics Indoor Unit...
  • Page 42 Electrical Schematics Indoor Unit...
  • Page 43 Electrical Schematics 18K, 24K These circuit diagrams are subject to change without notice, please refer to the one supplied with the unit.
  • Page 44 Electrical Schematics 18K, 24K These circuit diagrams are subject to change without notice, please refer to the one supplied with the unit.

  • Page 45: Outdoor Circuit Board

    Printed Circuit Boards AP-1 Circuit Board Compressor Heater Band N2 - Voltage Terminal 4-Way Valve Compressor Wires Thermistor wires...

  • Page 46: Troubleshooting Indoor Components

    Troubleshooting Indoor Components Indoor Fan Motor Troubleshooting To check the condition of the indoor fan motor voltage measurements and resistance measurements can be compared to the following charts. Care must be taken when checking voltage measurements, all wires and terminals must be isolated for safety.
  • Page 47 Troubleshooting Indoor Components Step Motor Troubleshooting To check the condition of the indoor step (swing) motor resistance measurements may be compared to the following chart. Resistance measurements must be taken with power off and the connector removed from the board. The following charts indicate approximate readings and may vary with different models.

  • Page 48: Troubleshooting Outdoor Components

    Troubleshooting Outdoor Components EEV Troubleshooting Heating Mode Cooling Mode Input Output Output Input To check the operation of the EEV Valve in cooling To check the operation of the EEV Valve in heating mode, using a digital thermometer record the mode, using a digital thermometer record the temperature of the input line and the output line temperature of the input line and the output line...
  • Page 49 Troubleshooting Outdoor Components 4-Way Valve Troubleshooting Heating Mode Cooling Mode To Accumulator To Accumulator To Condenser To Condenser Suction Line Suction Line Coil Coil Compressor Compressor Discharge Discharge Checking the 4-way valve in cooling mode requires Checking the 4-way valve in heating mode requires the measurement of 4 readings.
  • Page 50 Troubleshooting Outdoor Components Temperature Sensor Check Temperature Sensor Using a glass of ice water, place the sensor into the glass with a digital thermometer. Wait a few minutes for the reading to stabilize. Compare the readings to the sensor tables in Appendix “A”, it the reading are not comparable, replace the sensor.
  • Page 51 Troubleshooting Outdoor Components Compressor Windings Compressor Windings Red, Yellow & Blue Wires Slightly depress tab for easy removal Compressor Winding Resistance Check: Remove the compressor wires from the AP1 circuit board. The wires red to yellow, yellow to blue & red to blue should have readings from 2 - 4 ohms.
  • Page 52 Troubleshooting Outdoor Components Outdoor Fan Motor Outdoor Motor Winding Resistance Check: Disconnect power to the unit, all reading are made with no power and fan motor wires disconnected from circuit board. The chart below will indicate the approximate resistance values in ohms. This motor is a brush-less DC motor, readings may vary slightly for different models.
  • Page 53 Troubleshooting Outdoor Components Compressor Crankcase Heater Check Compressor Crankcase Heater Resistance Check: Unplug the wire connector from the circuit board. The resistance should read approximately 2.15K ohms. There should be no reading from either wire to ground. If readings vary from these measurements, replace the heater. Refrigerant Temperature Sensors These sensors are a negative coefficient thermistor that decrease in resistance as the temperature increases.
  • Page 54 Troubleshooting Outdoor Components Liquid Line Temperature Sensors These sensors are a negative coefficient thermistor that decrease in resistance as the temperature increases. The sensors are used to monitor the temperature of the refrigerant leaving the EEV to maintain a correct superheat operation.
  • Page 55 Troubleshooting Outdoor Components Exhaust Temperature Sensor The exhaust temperature sensor monitors the refrigerant discharge temperature and will send information to the inverter control board for system operation. The following actions can occur: Exhaust Temperature > 208 F - Compressor will not rise above present level Exhaust Temperature >...
  • Page 56 Troubleshooting Outdoor Components Outdoor Temperature Sensor This sensor is a negative coefficient thermistor that will decrease in resistance as the temperature increases. This sensor will monitor the temperature of the outdoor air. The reading will be used by the inverter board to adjust frequency calculations.

  • Page 57: Fault Codes & Status Displays

    Fault Displays Troubleshooting Faults Observe all electrical precautions during service of indoor and outdoor units. During Static service (serving nit without power applied), wait 10 minutes before service units. During dynamic service (servicing while unit is energized), be sure unit is properly grounded. Troubleshooting procedure: 1.
  • Page 58 Fault Displays 9,000 and 12,000 btuh units Display Method of Indoor Unit Display Method of Outdoor Unit Indicator has 3 kinds of display A/C Status Possible Causes Indicator Display (during status and during blinking, ON Malfuntiuon blinking, ON 0.5s and OFF 0.5s) Dual-8 0.5ws and OFF 0.5s Name...
  • Page 59 Fault Displays 9,000 and 12,000 btuh units Display Method of Indoor Unit Display Method of Outdoor Unit Indicator has 3 kinds of display A/C Status Possible Causes Indicator Display (during status and during blinking, ON Malfuntiuon blinking, ON 0.5s and OFF 0.5s) Dual-8 0.5ws and OFF 0.5s Name...
  • Page 60 Fault Displays 9,000 and 12,000 btuh units Display Method of Indoor Unit Display Method of Outdoor Unit Indicator has 3 kinds of display A/C Status Possible Causes Indicator Display (during status and during blinking, ON Malfuntiuon blinking, ON 0.5s and OFF 0.5s) Dual-8 0.5ws and OFF 0.5s Name...
  • Page 61 Fault Displays 9,000 and 12,000 btuh units Display Method of Indoor Unit Display Method of Outdoor Unit Indicator has 3 kinds of display A/C Status Possible Causes Indicator Display (during status and during blinking, ON Malfuntiuon blinking, ON 0.5s and OFF 0.5s) Dual-8 0.5ws and OFF 0.5s Name...
  • Page 62 Fault Displays 9,000 and 12,000 btuh units Display Method of Indoor Unit Display Method of Outdoor Unit Indicator has 3 kinds of display A/C Status Possible Causes Indicator Display (during status and during blinking, ON Malfuntiuon blinking, ON 0.5s and OFF 0.5s) Dual-8 0.5ws and OFF 0.5s Name...
  • Page 63 Fault Displays 9,000 and 12,000 btuh units Display Method of Indoor Unit Display Method of Outdoor Unit Indicator has 3 kinds of display A/C Status Possible Causes Indicator Display (during status and during blinking, ON Malfuntiuon blinking, ON 0.5s and OFF 0.5s) Dual-8 0.5ws and OFF 0.5s Name...
  • Page 64 Fault Displays 9,000 and 12,000 btuh units Display Method of Indoor Unit Display Method of Outdoor Unit Indicator has 3 kinds of display A/C Status Possible Causes Indicator Display (during status and during blinking, ON Malfuntiuon blinking, ON 0.5s and OFF 0.5s) Dual-8 0.5ws and OFF 0.5s Name...
  • Page 65 Fault Displays 9,000 and 12,000 btuh units Display Method of Indoor Unit Display Method of Outdoor Unit Indicator has 3 kinds of display A/C Status Possible Causes Indicator Display (during status and during blinking, ON Malfuntiuon blinking, ON 0.5s and OFF 0.5s) Dual-8 0.5ws and OFF 0.5s Name...
  • Page 66 Fault Displays 9,000 and 12,000 btuh units Display Method of Indoor Unit Display Method of Outdoor Unit Indicator has 3 kinds of display A/C Status Possible Causes Indicator Display (during status and during blinking, ON Malfuntiuon blinking, ON 0.5s and OFF 0.5s) Dual-8 0.5ws and OFF 0.5s Name...
  • Page 67 Fault Displays 9,000 and 12,000 btuh units If malfunction occurs, corresponding code will display and the unit will resume normal until protection or malfunction disappears. Compressor starts (normal) Yellow indicator blinks once Yellow indicator blinks twice Defrosting (normal display of indoor unit) Anti-freezing protection (normal disply of Yellow indicator blinks 3 times indoor unit)
  • Page 68 Fault Displays 18,000 and 24,000 btuh units Indoor Unit Displaying Method Outdoor Unit Display (LED) Indicator Display (during Indicator has 3 kinds of display status and Malfunction Dual-8 blinking, ON 0.5s and OFF 0.5s during blinking, ON 0.5s and OFF 0.5s A/C Status Malfunctions Name...
  • Page 69 Fault Displays 18,000 and 24,000 btuh units Indoor Unit Displaying Method Outdoor Unit Display (LED) Indicator Display (during Indicator has 3 kinds of display status and Malfunction Dual-8 blinking, ON 0.5s and OFF 0.5s during blinking, ON 0.5s and OFF 0.5s A/C Status Malfunctions Name...
  • Page 70 Fault Displays 18,000 and 24,000 btuh units Indoor Unit Displaying Method Outdoor Unit Display (LED) Indicator has 3 kinds of display status Indicator Display (during Malfunction and during blinking, ON 0.5s and Dual-8 blinking, ON 0.5s and OFF 0.5s A/C Status Malfunctions Name OFF 0.5s...
  • Page 71 Fault Displays 18,000 and 24,000 btuh units Indoor Unit Displaying Method Outdoor Unit Display (LED) Indicator has 3 kinds of display Indicator Display (during Malfunction status and during blinking, ON 0.5s Dual-8 blinking, ON 0.5s and OFF 0.5s A/C Status Malfunctions Name and OFF 0.5s...
  • Page 72 Fault Displays 18,000 and 24,000 btuh units Indoor Unit Displaying Method Outdoor Unit Display (LED) Indicator has 3 kinds of display status Indicator Display (during Malfunction and during blinking, ON 0.5s and OFF Dual-8 blinking, ON 0.5s and OFF 0.5s A/C Status Malfunctions Name...
  • Page 73 Fault Displays 18,000 and 24,000 btuh units Indoor Unit Displaying Method Outdoor Unit Display (LED) Indicator has 3 kinds of display Indicator Display (during Malfunction status and during blinking, ON Dual-8 blinking, ON 0.5s and OFF 0.5s A/C Status Malfunctions Name 0.5s and OFF 0.5s Code...
  • Page 74 Fault Displays 18,000 and 24,000 btuh units Indoor Unit Displaying Method Outdoor Unit Display (LED) Indicator has 3 kinds of display status Indicator Display (during Malfunction and during blinking, ON 0.5s and OFF Dual-8 blinking, ON 0.5s and OFF 0.5s A/C Status Malfunctions Name...
  • Page 75 Fault Displays 18,000 and 24,000 btuh units Indoor Unit Displaying Method Outdoor Unit Display (LED) Indicator has 3 kinds of display Indicator Display (during Malfunction status and during blinking, ON 0.5s Dual-8 blinking, ON 0.5s and OFF 0.5s A/C Status Malfunctions Name and OFF 0.5s...
  • Page 76 Fault Displays 18,000 and 24,000 btuh units Indoor Unit Displaying Method Outdoor Unit Display (LED) Indicator has 3 kinds of display status Indicator Display (during Malfunction and during blinking, ON 0.5s and OFF Dual-8 blinking, ON 0.5s and OFF 0.5s A/C Status Malfunctions Name...
  • Page 77 Fault Displays 18,000 and 24,000 btuh units Indoor Unit Displaying Method Outdoor Unit Display (LED) Indicator has 3 kinds of display Indicator Display (during Malfunction status and during blinking, ON 0.5s Dual-8 blinking, ON 0.5s and OFF 0.5s A/C Status Malfunctions Name and OFF 0.5s...
  • Page 78 Fault Displays 18,000 and 24,000 btuh units Indoor Unit Displaying Method Outdoor Unit Display (LED) Indicator has 3 kinds of display status Indicator Display (during Malfunction and during blinking, ON 0.5s and OFF Dual-8 blinking, ON 0.5s and OFF 0.5s A/C Status Malfunctions Name...

  • Page 79: Troubleshooting Flow Charts

    Troubleshooting 9,000 & 12,000 Units Indoor Fan does not Operate Is the indoor control board fastened securely and wired correctly? Are the input voltages within 10% of rated value? Energize the unit Proper Voltage between Check power L & N supply Check connection on Repair connections...
  • Page 80 Troubleshooting 9,000 & 12,000 Units Temperature Sensor Malfunction Temperature sensor malfunction Start Temperature Sensor Troubleshooting F1 & F2 will relate to indoor sensor faults F4 & F5 will relate to outdoor sensor faults Is the sensor wire plug loose from control board Insert the plug correctly Is problem corrected?
  • Page 81 Troubleshooting 9,000 & 12,000 Units Start Failure Malfunction Energize and start the unit Is the stop duration of the compressor longer than 3 minutes. Are the wire connections Reconnect the wires on the compressor according to the wiring connected properly diagram Eliminate the malfunction Is the unit overcharged...
  • Page 82 Troubleshooting 9,000 & 12,000 Units Desynchronizing of Compressor after Unit is Started Desynchronizing of compressor 1. Check the resistance of the compressor Status: terminals and connections to the compressor During cooling mode, compressor will stop, 2. Check for overcharge of refrigerant indoor fan will run.
  • Page 83 Troubleshooting 9,000 & 12,000 Units Desynchronizing of Compressor During Operation Desynchronizing of compressor 1. Check the resistance of the compressor Status: terminals and connections to the compressor During cooling mode, compressor will stop, 2. Check for overcharge of refrigerant indoor fan will run. Heating mode all units 3.
  • Page 84 Troubleshooting 9,000 & 12,000 Units Overload and Discharge Malfunction Start Is the Overload connections OK Check the resistance between the two ends of the overload protector in ambient temperature. Is the resistance below 1K Is the wiring of the Reconnect according to the electronic expansion valve wring diagram connected well...
  • Page 85 Troubleshooting 9,000 & 12,000 Units Communication Failure Communication Failure 1. Improper voltages Status: 2. Mis-matched indoor and outdoor units Cooling operation, compressor stops while 3. Improper wiring between indoor and outdoor indoor fans runs. Heating operation, complete units unit stops Communication failure of some units De-energize, check the wire...
  • Page 86 Troubleshooting 18,000 & 24,000 Units Temperature sensor malfunction Start Temperature Sensor Troubleshooting Is the sensor wire plug loose from the control board? Insert the plug correctly Is problem corrected? Is there a short or open circuit in the wire or sensor? Replace sensor or correct wire problem Is problem corrected?
  • Page 87 Troubleshooting 18,000 & 24,000 Units Indoor fan does not operate Possible causes: 1. Fan motor locked 2. The control or feedback terminal of PG not connected properly 3. Damaged motor 4. Main board malfunction Energize the unit Does fan turn freely? Find obstruction Is the feedback terminal PG motor...
  • Page 88 Troubleshooting 18,000 & 24,000 Units Jumper Cap Malfunction Jumper Cap Malfunction 1. No jumper cap inserted on board Status: 2. Jumper cap not fully seated Wireless remote will not send command to 3. Jumper cap damaged indoor unit. 4. Bad control board Start Troubleshooting Is there a jumper cap on the Install a matching...
  • Page 89 Troubleshooting 18,000 & 24,000 Units Overcurrent Protection Fault & Status Possible Causes Overcurrent Protection 1. Supply voltage is unstable Status: 2. Supply voltage is too low During cooling & dehumidifying, indoor unit 3. Coils are dirty operates while other functions stop; During 4.
  • Page 90 Troubleshooting 18,000 & 24,000 Units Capacity Charging Malfunction Charging Malfunction of Capacitor 1. Improper input voltage Status: 2. Poor connection on reactor During cooling mode, compressor will stop, 3. Reactor damaged indoor fan will run. Heating mode all units 4. Bad AP1 control board stop.
  • Page 91 Troubleshooting 18,000 & 24,000 Units IPM Protection Malfunction (unit will not run) Fault & Status Possible Causes 1. Dirty indoor and outdoor coils IPM Protection Status: 2. Faulty indoor or outdoor fans During cooling mode, compressor will stop, 3. High system pressure indoor fan will run.
  • Page 92 Troubleshooting 18,000 & 24,000 Units Compressor Overload, Discharge Protection Malfunction 1. Check the resistance of the compressor terminals and connections to the compressor 2. Check for overcharge of refrigerant 3. Check for correct voltage 4. Check for dirty coils and filters Start Is the Overload connections OK Check the resistance between the...
  • Page 93 Troubleshooting 18,000 & 24,000 Units Desynchronize Malfunction, continued next page 1. Check the resistance of the compressor Desynchronizing of compressor Status: terminals and connections to the compressor During cooling mode, compressor will stop, 2. Check for overcharge of refrigerant indoor fan will run. Heating mode all units 3.
  • Page 94 Troubleshooting 18,000 & 24,000 Units Desynchronize Malfunction, continued Desynchronizing of compressor 1. Check the resistance of the compressor Status: terminals and connections to the compressor During cooling mode, compressor will stop, 2. Check for overcharge of refrigerant indoor fan will run. Heating mode all units 3.
  • Page 95 Troubleshooting 18,000 & 24,000 Units Anti-High Temperature, Overload Protection High Discharge Temperature Protection of 1. Is unit running in proper outdoor ambient range Compressor. 2. Faulty outdoor temperature sensor Status: 3. Refrigerant leak Cooling operation, compressor stops while 4. Poor airflow of outdoor unit indoor fans runs.
  • Page 96 Troubleshooting 18,000 & 24,000 Units Unit Will Not Start Ensure proper voltage, should be withing 10% Power voltage low of nameplate Check fuses or circuit Outdoor unit will not start No power breakers Poor electrical connection Check wire connections Controller fuse open Replace fuse Defective controller board Replace controller board...
  • Page 97 Troubleshooting 18,000 & 24,000 Units Startup Failure Energize and start the unit Is the stop duration of the compressor longer than 3 minutes. Are the wire connections Reconnect the wires on the compressor according to the wiring connected properly diagram Eliminate the malfunction Is the unit overcharged Charge the unit according...
  • Page 98 Troubleshooting 18,000 & 24,000 Units Compressor Overload, Discharge Protection Malfunction Start Is the Overload connections OK Check the resistance between the two ends of the overload protector in ambient temperature. Is the resistance below 1K Is the wiring of the Reconnect according to the electronic expansion valve wring diagram...
  • Page 99 Troubleshooting 18,000 & 24,000 Units PFC Malfunction (correction for power factor) PFC (Power Factor Correction) Protection 1. Check for damage to the reactor and PFC Status: capacitor of the outdoor unit During cooling & dehumidifying, indoor unit 2. Refer to troubleshooting procedure below operates while other functions stop;...
  • Page 100 Troubleshooting 18,000 & 24,000 Units Communication Malfunction of Indoor Unit, continued next page for Outdoor Unit Communication Failure 1. Improper voltages Status: 2. Mis-matched indoor and outdoor units Cooling operation, compressor stops while 3. Improper wiring between indoor and outdoor indoor fans runs.
  • Page 101 Troubleshooting 18,000 & 24,000 Units Communication Malfunction of Outdoor Unit E6 Error Code continued Communication failure outdoor units De-energize, check the wire connections of indoor and outdoor units and power to outdoor unit Did this correct the Are all connections correct? Correct connections problem? De-energize, check the wire connection between...
  • Page 102 General Troubleshooting Miscellaneous Malfunctions Fan capacitor has open circuit or Replace capacitor damaged Motor overload protector faulty Replace motor The fan does not run when set to run Motor winding open Replace motor Repair connection, wire per Incorrect wiring or bad connection schematic Fan capacitor has open circuit or Replace capacitor...
  • Page 103 General Troubleshooting Miscellaneous Malfunctions, cont. Incorrect refrigerant charge Charge per instructions Faulty metering device Check refrigerant flow The compressor is hot, tripping overload Faulty valve in compressor Replace compressor Faulty protector Replace protector The toque of the swing motor not Replace swing motor sufficient Indoor swing motor...
  • Page 104 General Troubleshooting Miscellaneous Malfunctions, cont. Drainage pipe blocked or broken Repair or replace pipe Water leakage Damaged or insufficient pipe Re-wrap pipe insulation insulation Indoor fan loose or hitting sides Tighten and adjust Foreign object in indoor unit Remove object Abnormal sound and/or shake Adjust support washer of...
  • Page 105 General Troubleshooting Compressor Running Hot Improper installation, bad unit Check for proper installation per ventilation, not level, direct sunlight, manual etc. Ambient temperature too high Check for operational limits Clean indoor coils, filters and Filters or coils dirty outdoor coils Indoor or outdoor fans not Check fan settings and controller operating at correct speeds...

  • Page 106: Disassembly Of Indoor Units

    Disassembly of RIO Indoor Unit 12,000 btuh Other models may vary slightly Warning - Wait 10 minutes after power is disconnected before starting disassembly. Hold On/Off button for 5 seconds to force a cooling operation for approximately 15 minutes. 1. Remove air filters Step 1.
  • Page 107 Disassembly of RIO Indoor Unit 12,000 btuh Other models may vary slightly Warning - Wait 10 minutes after power is disconnected before starting disassembly. 3. Open front panel Step 1. Slide axial bushing and remove bushing. Bend the horizontal louver slightly and remove.
  • Page 108 Disassembly of RIO Indoor Unit 12,000 btuh Other models may vary slightly Warning - Wait 10 minutes after power is disconnected before starting disassembly. Hold On/Off button for 5 seconds to force a cooling operation for approximately 15 minutes. 4. Remove service cover Step 1.
  • Page 109 Disassembly of RIO Indoor Unit 12,000 btuh Other models may vary slightly Warning - Wait 10 minutes after power is disconnected before starting disassembly. 6. Open electrical box Step 1. Disconnect the cable clamp Step 2. Remove the temperature sensor. Disconnect the connection wires.
  • Page 110 Disassembly of RIO Indoor Unit 12,000 btuh Other models may vary slightly Warning - Wait 10 minutes after power is disconnected before starting disassembly. Hold On/Off button for 5 seconds to force a cooling operation for approximately 15 minutes. 7. Remove tubing assembly Step 1.
  • Page 111 Disassembly of RIO Indoor Unit 12,000 btuh Other models may vary slightly Warning - Wait 10 minutes after power is disconnected before starting disassembly. 8. Remove the pressure plate of the motor Step 1. Remove the screws of motor plate, then remove the motor plate.

  • Page 112: Disassembly Of 9,000 & 12,000 Btuh Outdoor Systems

    Disassembly of Outdoor Unit 9,000 & 12,000 btuh Warning - Wait 10 minutes after power is disconnected before starting disassembly. Warning Be sure to wait a minimum of 10 minutes after turning off all power supplies before disassembly 1. Remove tubing assembly 1.
  • Page 113 Disassembly of Outdoor Unit 9,000 & 12,000 btuh Warning - Wait 10 minutes after power is disconnected before starting disassembly. 3. Remove grille and front panel 1. Loosen screws and remove the discharge grille 2. Loosen the 5 screws holding the front panel. 4.
  • Page 114 Disassembly of Outdoor Unit 9,000 & 12,000 btuh Warning - Wait 10 minutes after power is disconnected before starting disassembly. 5. Remove fan motor and axial blade 1. Remove the screws of the fan and then remove the axial blade along with motor assembly. 2.
  • Page 115 Disassembly of Outdoor Unit 9,000 & 12,000 btuh Warning - Wait 10 minutes after power is disconnected before starting disassembly. 7. Remove the partition plate 1. Loosen the two screws 2. The partition plate has a hook on the lowers side. Lift and pull the partition plate to remove.
  • Page 116 Disassembly of Outdoor Unit 9,000 & 12,000 btuh Warning - Wait 10 minutes after power is disconnected before starting disassembly. 8. Remove compressor 1. Remove 4-way valve and tubinge by un-soldering. Properly remove all refrigerant. 2. Remove the 3 footing screws holding compressor, then remove the compressor.
  • Page 117 Disassembly of Outdoor Unit 9,000 & 12,000 btuh Warning - Wait 10 minutes after power is disconnected before starting disassembly. 8. Remove compressor, cont. 3. Remove screws holding gas valve assembly, unsolder the joint between the gas valve and condensor piping, then remove gas valve.

  • Page 118: Disassembly Of 18,000 And 24,000 Btuh Outdoor Systems

    Disassembly of Outdoor Unit 18,000 and 24,000 btuh Warning - Wait 10 minutes after power is disconnected before starting disassembly. Warning Be sure to wait a minimum of 10 minutes after turning off all power supplies before disassembly 1. Remove top cover plate, valve cover and handle 1.
  • Page 119 Disassembly of Outdoor Unit 18,000 and 24,000 btuh Warning - Wait 10 minutes after power is disconnected before starting disassembly. 2. Remove grille and front panel 1. Loosen screws and remove the discharge grille 2. Loosen the screws holding the front panel, loosen the clasp on the right side, rotate to the left then remove the panel.
  • Page 120 Disassembly of Outdoor Unit 18,000 and 24,000 btuh Warning - Wait 10 minutes after power is disconnected before starting disassembly. 4. Remove the axial flow fan 1. Remove the nuts holding the fan blade, then remove the blade. 2. Remove the four screws holding the motor, disconnect the leading wire insert of the motor, then remove the motor.
  • Page 121 Disassembly of Outdoor Unit 18,000 and 24,000 btuh Warning - Wait 10 minutes after power is disconnected before starting disassembly. 6. Remove fireproof electric box and sound proof sponge 1. Remove the screws holding fireproof electric box, then remove box. 2.
  • Page 122 Disassembly of Outdoor Unit 18,000 and 24,000 btuh Warning - Wait 10 minutes after power is disconnected before starting disassembly. 8. Remove the 4 way valve assembly 1. Remove the screws holding the 4-way valve coil. Properly remove refrigerant, protect valve from heat damage and remove valve.

  • Page 123: Appendix 1 - 3 Temperature Sensor Resistance Tables

    Disassembly of Outdoor Unit 18,000 and 24,000 btuh Warning - Wait 10 minutes after power is disconnected before starting disassembly. 10.. Remove condenser sub-assembly 1. Remove the screws connecting the support (condenser) and condenser assembly, then remove the support. 2. Carefully remove the chassis sub assembly and condenser sub assembly.
  • Page 124 Appendix 1: Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor Units (15K) Temp Temp Resistance Temp Temp Resistance Temp Temp Resistance (ºC) (ºF) (kΩ) (ºC) (ºF) (kΩ) (ºC) (ºF) (kΩ) -2.2 138.1 91.4 10.63 185.0 1.594 -0.4 128.6 93.2 10.2 186.8...
  • Page 125 Appendix 1: Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor Units (15K) Temp Temp Resistance Temp Temp Resistance Temp Temp Resistance (ºC) (ºF) (kΩ) (ºC) (ºF) (kΩ) (ºC) (ºF) (kΩ) 50.0 29.9 143.6 3.454 237.2 0.678 51.8 28.51 145.4 3.333 239.0...
  • Page 126 Appendix 2: Resistance Table of Outdoor and Indoor Tube Temperature Sensors (20K) Temp Temp Resistance Temp Temp Resistance Temp Temp Resistance (ºC) (ºF) (kΩ) (ºC) (ºF) (kΩ) (ºC) (ºF) (kΩ) -2.2 181.4 91.4 14.18 185.0 2.125 -0.4 171.4 93.2 13.59 186.8 2.059 162.1...
  • Page 127 Appendix 2: Resistance Table of Outdoor and Indoor Tube Temperature Sensors (20K) Temp Temp Resistance Temp Temp Resistance Temp Temp Resistance (ºC) (ºF) (kΩ) (ºC) (ºF) (kΩ) (ºC) (ºF) (kΩ) 50.0 39.87 143.6 4.605 237.2 0.904 51.8 38.01 145.4 4.443 239.0 0.88 53.6...
  • Page 128 Appendix 3: Resistance Table of Outdoor Discharge Temperature Sensor (50K) Temp Temp Resistance Temp Temp Resistance Temp Temp Resistance (ºC) (ºF) (kΩ) (ºC) (ºF) (kΩ) (ºC) (ºF) (kΩ) -20.2 853.5 73.4 53.74 167.0 7.224 -18.4 799.8 75.2 51.41 168.8 6.998 -16.6 77.0 49.19...
  • Page 129 Appendix 3: Resistance Table of Outdoor Discharge Temperature Sensor (50K) Temp Temp Resistance Temp Temp Resistance Temp Temp Resistance (ºC) (ºF) (kΩ) (ºC) (ºF) (kΩ) (ºC) (ºF) (kΩ) 41.0 125.1 134.6 13.58 228.2 2.568 42.8 119.1 136.4 13.09 230.0 2.498 44.6 113.4 138.2...
  • Page 130 Gree Electric Appliances, Inc. (C) 2014 Cat. No. DFS-RIO-HP-2SM...

This manual is also suitable for:

Rio09hp230v1aRio12hp230v1bRio12hp115v1aRio18hp230v1aRio24hp230v1aRio09hp230v1b ... Show all

Table of Contents