Gree TERRA09HP230V1A Installation, Service & Troubleshooting
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Gree TERRA09HP230V1A Installation, Service & Troubleshooting

Ductless system
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Terra
DUCTLESS SYSTEM
Installation, Service & Troubleshooting
Models:
TERRA09HP230V1A
TERRA12HP230V1A
TERRA18HP230V1A
TERRA24HP230V1A

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Summary of Contents for Gree TERRA09HP230V1A

  • Page 1 Terra DUCTLESS SYSTEM Installation, Service & Troubleshooting Models: TERRA09HP230V1A TERRA12HP230V1A TERRA18HP230V1A TERRA24HP230V1A...

  • Page 2: Table Of Contents

    Table of Contents Safety Precautions & Warnings......................... Model Number Identification..........................Physical & Electrical Data..........................5 - 6 Product Introduction (System Overview)...................... Product Introduction (Refrigeration Cycles)....................8 - 10 Indoor & Outdoor Components........................11 - 12 Operational Data..............................13- 16 Basic Functions 9,000/12,000 btuh Systems....................17 - 28 Basic Functions 18,000/24,000 btuh Systems....................

  • 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

    Safety Considerations & Warnings Model Number Identification Product Catalog Number-Nomenclature TERRA 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...

  • Page 5: Physical & Electrical Data

    Physical & Electrical Data, cont. Model TERRA09HP230V1A TERRA12HP230V1A 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 (3,500-9,600) 12,000 (3,100-13,000) Heating Cap (Min/Max)

  • Page 6: Physical & Electrical Data

    Physical & Electrical Data, cont. Model TERRA18HP230V1A TERRA24HP230V1A System Type Heat Pump Power Supply 208-230V / 60Hz 208-230V / 60Hz Rated Current Cooling Amps Rated Current Heating Amps 10.3 System Performance Cooling Cap (Min/Max) Btu/h 18,000 (4,600-22,180) 24,000 (6,826-29,352) Heating Cap (Min/Max) Btu/h 19,000 (3,400-24,900) 25,000 (7,509-37,543)

  • Page 7: Product Introduction (System Overview)

    Product Introduction System Overview The Terra Ductless split heat pumps are a single zone unit available in size from 9000 btuh to 24, 000 btuh providing heating and cooling. All comfort settings Indoor Display are controlled by a remote control. The Terra unit has many features to enhance comfort and efficiency.

  • Page 8: Product Introduction (Refrigeration Cycles)

    Product Introduction Refrigeration Components Outdoor Unit Indoor Unit Strainer Temperature Heat Sensor Exchanger Temperature Sensor Heat Exchanger Electronic Expansion Valve 4-way High Pressure Switch Accumulator Compressor Note; Component locations may vary depending on models.

  • Page 9: Cooling Mode

    D. The subcooled liquid will enter the Electronic Expansion Valve (EEV) and will be regulated to about a 10 de- gree F superheat level. The EEV will adjust its flow based upon the temperature sensor readings. The adjust- ment process and compressor speed are controlled by the outdoor circuit board.

  • Page 10: Heating Mode

    Product Introduction Heating Mode Outdoor Unit Indoor Unit Temperature Heat Filter Sensor Exchanger Electronic Heat Exchanger expansion valve 4-way valve Accumulator not on all sizes A. Hot gas is discharged from the compressor. The temperature of the gas in monitored by the Discharge Tem- perature sensor and sent to the outdoor control panel.
  • Page 11 Product Introduction Indoor Unit Components Terra 9,000 btuh Indoor Unit Other Terra models may very slightly. Indoor Circuit Board Fan Motor Step Motor Horizontal Swing Motor Vertical Swing Ambient Motor Temperature Sensor Indoor Tube Thermistor...
  • Page 12 Product Introduction Outdoor Unit Components Terra 9,000 btuh Outdoor Unit Other Terra models may very slightly. Circuit Board Outdoor Fan Temperature Sensor Accumulator 4-way High Pressure Switch Strainer Compressor Note; Component locations may vary depending on models.

  • Page 13: Operational Data

    Product Introduction Operation Characteristic Curve...
  • Page 14 Product Introduction Capacity Variation Ratio According to Temperature...

  • Page 15: Indoor & Outdoor Components

    Product Introduction Operation Data Cooling Heat Exchanger Compressor Pressure Temperature Condition ( Indoor Fan Outdoor Fan Pipe Temperature Model Speed PSI) Mode Mode (rps) Indoor Outdoor T1 ( T2 ( 57.2 98.6 Turbo High 98.6 Turbo High 80.6/66.6 95/75.2 18/24K 131-160 167-181.4 to 46.4-51.8 to...
  • Page 16 Product Introduction Noise Criteria Curve Tables...

  • Page 17: Basic Functions 9,000/12,000 Btuh Systems

    Product Introduction System Operation 9,000/12,000 btuh Models 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 18 Product Introduction System Operation 9,000/12,000 btuh Models, cont. Basic Functions 3)Heating Mode Heating Process When the indoor ambient drops 20 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 19 Product Introduction System Operation 9,000/12,000 btuh Models, cont. Basic Functions Defrost Process 1) The unit will enter defrost when the following conditions are met: A. Outdoor ambient <= 410 F B. Compressor had accumulated more than 3 hours of operation in heating mode C.
  • Page 20 Product Introduction System Operation 9,000/12,000 btuh Models, cont. Basic Functions System Protection 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.
  • Page 21 Product Introduction System Operation 9,000/12,000 btuh Models, cont. Basic Functions 6)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 abnor- mal high temperature condition.
  • Page 22 Product Introduction System Operation 9,000/12,000 btuh Models, cont. Other Controls 1)On/Off The on-off state will change with each button press. 2)Mode Selection Press the “Mode” button to change from Auto, Cool, Dry, Fan or Hesat Pump 3)Temperature Setting Each time you press the “TEMP+” or “TEMP-” button the temperature setting will change by 10 F. The temperature range is 60.80 F - 860 F.
  • Page 23 Product Introduction System Operation 9,000/12,000 btuh Models, cont. Other Controls 6)Sleep Control The Terra has 3 Sleep mode settings to improve comfort and energy savings. Auto Mode and Fan Mode do not utilize the Sleep Mode Settings Sleep Mode 1 (Gradual Cycle) 1.
  • Page 24 Product Introduction System Operation 9,000/12,000 btuh Models, cont. Other Controls Sleep Mode 2 (Adaptive Cycle) 1. Cool or Dry Mode (Initial setpoint between 610 F. - 740 F.) a) After 1 hour of operation the temperature setting will raise 20 F every hour b) After 3 hours of operation the temperature setting will raise 60 F above initial setpoint and stay at this setting c) After 7 hours of operation, the setpoint will move to 40 F.
  • Page 25 Product Introduction System Operation 9,000/12,000 btuh Models, cont. Other Controls Sleep Mode 3 (Customized Cycle) You will be required to enter 8 room setpoint values for 8 hours of runtime. The last room setpoint value will be main- tained until Sleep Mode is canceled. In Sleep Mode 3, press the “Turbo”...
  • Page 26 Product Introduction System Operation 9,000/12,000 btuh Models, cont. Other Controls Fan Only “Auto” Mode a) T ambient > T + 40 F fan will run on high speed indoor setpoint b) T + 20 F <= T ambient <= T + 40 F fan will run on medium speed setpoint...
  • Page 27 Product Introduction System Operation 9,000/12,000 btuh Models, cont. Other Controls 8) Buzzer Control The buzzer control will send a “Tone” when the air conditioner is powered-up or received information sent by the remote control. You will also hear the tone when there is a button input or if the indoor unit doesn’t receive a signal from the re- mote controller in the Heat Mode.
  • Page 28 Product Introduction System Operation 9,000/12,000 btuh Models, cont. Other Controls 11) Display 1. Operational and Mode Display All the display patterns will display for a time when the power is on, the operation pattern will display in red under standby status.

  • Page 29: Basic Functions 18,000/24,000 Btuh Systems

    Product Introduction System Operation 18,000/24,000 btuh Models 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 30 Product Introduction System Operation 18,000/24,000 btuh Models, cont. Basic Functions 2) Dry Mode Drying Process This feature will not take the place of a dehumidifier, it is intended to dry the filer and slightly cool the air. If the indoor ambient temperature is greater than the preset temperature, the unit will enter the cooling and drying mode, in which case the compressor will operate and the indoor fan will run at a low speed.
  • Page 31 Product Introduction System Operation 18,000/24,000 btuh Models, cont. Basic Functions Heating Process, cont. Stop heating +90 F + 20 F Defrost Process and Oil Return (Indoor display will indicate “H1”, this is not a fault code) 1) The unit will enter defrost when the following conditions are met: A.
  • Page 32 Product Introduction System Operation 18,000/24,000 btuh Models, cont. Basic Functions Defrost Process, cont. 2) When heating has operated continuously for 45 minutes, or accumulated for 90 minutes, the unit will enter defrost mode in 3 minutes after meeting any of the conditions below: A.
  • Page 33 Product Introduction System Operation 18,000/24,000 btuh Models, cont. Basic Functions 5)Auto Mode Auto Mode Process Setting the auto mode will run the unit in heat or cool automatically depending on T ambient indoor 1)Operating Parameters A. If the T ambient >= 790 F the unit will operate in cooling mode. The set temperature is 770 F. indoor B.
  • Page 34 Product Introduction System Operation 18,000/24,000 btuh Models, cont. Basic Functions 6)Common Protection Functions and Fault Displays Overload 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 35 Product Introduction System Operation 18,000/24,000 btuh Models, cont. Other Controls 1)On/Off The on-off state will change with each button press. 2)Mode Selection Press the “Mode” button to change from Auto, Cool, Dry, Fan or Heat Pump 3)Temperature Setting Each time you press the “TEMP+” or “TEMP-” button the temperature setting will change by 10 F. The temperature range is 610 F - 860 F.
  • Page 36 Product Introduction System Operation 18,000/24,000 btuh Models, cont. Other Controls 6)Sleep Control The Terra has 3 Sleep mode settings to improve comfort and energy savings. Auto Mode and Fan Mode do not utilize the Sleep Mode Settings Sleep Mode 1 (Gradual Cycle) 1.
  • Page 37 Product Introduction System Operation 18,000/24,000 btuh Models, cont. Other Controls Sleep Mode 2 (Adaptive Cycle) 1. Cool or Dry Mode (Initial setpoint between 610 F. - 740 F.) a) After 1 hour of operation the temperature setting will raise 20 F every hour b) After 3 hours of operation the temperature setting will raise 60 F above initial setpoint and stay at this setting c) After 7 hours of operation, the setpoint will move to 40 F.
  • Page 38 Product Introduction System Operation 18,000/24,000 btuh Models, cont. Other Controls Sleep Mode 3 (Customized Cycle) You will be required to enter 8 room setpoint values for 8 hours of runtime. The last room setpoint value will be main- tained until Sleep Mode is canceled. In Sleep Mode 3, press the “Turbo”...
  • Page 39 Product Introduction System Operation 18,000/24,000 btuh Models, cont. Other Controls 7) Indoor Fan Control, cont. Fan Only “Auto” Mode a) T ambient > T + 40 F fan will run on high speed indoor setpoint b) T + 20 F <= T ambient <= T + 40 F fan will run on medium speed...
  • Page 40 Product Introduction System Operation 18,000/24,000 btuh Models, cont. Other Controls 8) Buzzer Control The buzzer control will send a “Tone” when the air conditioner is powered-up or received information sent by the remote control. You will also hear the tone when there is a button input or if the indoor unit doesn’t receive a signal from the re- mote controller in the Heat Mode.
  • Page 41 Product Introduction System Operation 18,000/24,000 btuh Models, cont. Other Controls 11) Display 1. Operational and Mode Display All the display patterns will display for a time when the power is on, the operation pattern will display in red under standby status.

  • Page 42: 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 con- trol and the indoor unit for proper operation.
  • Page 43 Remote Control Operation Display Icons 1. IFeel 2. Auto Mode 3. Cool Mode 4. Dry Mode 5. Fan Mode 6. Heat Mode 7. Sleep Mode 8. Quiet Mode 9. X-Fan Mode 10. Display Temperature Mode 11. Timer On 12. Display Light 13.

  • Page 44: 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 insure 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 45 Refrigerant Charging Procedure Please refer to your units installation manual for proper charge. If your lineset exceeds 25’ , additional charge will be required. The charge must we weighed in with a refrigerant charging scale. 1. Determine addition refrigerant charge. Multiply refrigerant charge per ft by total tubing length - 25.
  • Page 46 Refrigerant Charging Procedure, cont. 5. Begin adding additional refrigerant Open the low side manifold valve to begin the charging process. Unit should be charged in liquid state. 6. Charge to the correct weight If the scale was zeroed with the refrigerant tank on the scale, the amount added to the system will be a nega- tive amount since it was removed from the tank.

  • Page 47: Installation

    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 48 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 49 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 50 Installation Pressure and Leak Test 1. Use only dry nitrogen with a pressure regulator for pressurizing unit. Pressurize with 150 psi of dry nitro- gen. 2. Apply soap and water to check whether the joints are leaky. A leak detector can also be applied for a leakage test.
  • Page 51 Installation Connect the Outdoor Wiring 1. Remove the handle on the right side plate of the out- door unit. 2. Connect power wiring form outdoor disconnect to L1, L2 and ground. 3. Connect wiring from indoor unit to 1,2,3 & ground, being careful to match color code of indoor connections.

  • Page 52: Filter Maintenance And Emergency Operation

    Filter Maintenance and Emergency Operation Cleaning Air Filter 1. Remove the front panel as shown on the picture in the left. 2. The first stage filter can be cleaned with a vacu- um cleaner or by washing with a mild soap and <...

  • Page 53: Electrical Schematics

    Electrical Schematics Electrical Legend These circuit diagrams are subject to change without notice, please refer to the one supplied with the unit.

  • Page 54: Electrical Schematics

    Electrical Schematics...
  • Page 55 Electrical Schematics These circuit diagrams are subject to change without notice, please refer to the one supplied with the unit.
  • Page 56 Printed Circuit Boards Indoor Unit These circuit diagrams are subject to change without notice, please refer to the one supplied with the unit.
  • Page 57 Printed Circuit Boards Outdoor Unit These circuit diagrams are subject to change without notice, please refer to the one supplied with the unit.
  • Page 58 Printed Circuit Boards Outdoor Unit These circuit diagrams are subject to change without notice, please refer to the one supplied with the unit.
  • Page 59 Printed Circuit Boards Outdoor Unit These circuit diagrams are subject to change without notice, please refer to the one supplied with the unit.

  • Page 60: 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 cool- To check the operation of the EEV Valve in heating ing mode, using a digital thermometer record mode, using a digital thermometer record the tem- the temperature of the input line and the output perature of the input line and the output line of the...
  • Page 61 Troubleshooting Outdoor Components 4-Way Valve Troubleshooting Heating Mode Cooling Mode Compressor Compressor To Accumulator Discharge Discharge To Accumulator To Condenser To Condenser Coil Suction Line Coil Suction Line Checking the 4-way valve in cooling mode requires Checking the 4-way valve in heating mode re- the measurement of 4 readings.
  • Page 62 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 compara- ble, replace the sensor.
  • Page 63 Troubleshooting Outdoor Components Compressor Windings Compressor Windings Red, Yellow & Blue Wires Compressor Winding Resistance Check: Unplug the wire spade connectors from the circuit board. The spade terminals have a small clip to press for removal. Press this clip slightly inward, then lift straight up on terminal. The wires red to yellow, yellow to blue & red to blue should have readings from 2 - 4 ohms.
  • Page 64 Troubleshooting Outdoor Components Base Pan Heater Check Base Pan Heater Resistance Check: Unplug the wire connector from the circuit board. The resistance should read approximately 740 ohms. There should be no reading from either wire to ground. If readings vary from these measurements, replace the heater. Compressor Crankcase Heater Check Compressor Crankcase Heater Resistance Check: Unplug the wire connector from the circuit board.
  • Page 65 Troubleshooting Outdoor Components Reactor Reactor Resistance Check: The line reactor helps to smooth the inrush current , reduce harmonics and noise, and buffers the system, pro- tecting the electronics from transient voltage noise. The resistance between the coils will be very low, approxi- mately .3 ohms and should not have any resistance to ground.

  • Page 66: Fault & Status Displays

    Fault Displays Outdoor Unit Indicator Display Yellow indicator blinks once Compressor starts (normal) à Yellow indicator blinks twice Defrosting (normal display of indoor unit) à Yellow indicator blinks for 3 Anti-freezing protection (normal display of indoor unit à times Yellow indicator blinks for 4 IPM protection à...
  • Page 67 Fault and Status Display Table 9,000/12,000 Systems Yellow Malfunction Indoor Lamp for Red LED Malfunction Name Lamp for Lamp for Type Display Opera- Lamp Cooling Heating Lamp tion Malfunction of Circuit for zero Blinks for cross detection 17 times Malfunction protection for Blinks for jumper cap 15 times...
  • Page 68 Fault and Status Display Table 9,000/12,000 Systems High pressure protection for the Blinks system once Low pressure protection for the Blinks for system (reserved) 3 times Lock of compressor (for com- mercial air conditioner) Reset of drive module (for com- mercial air conditioner) Overspeed (for commercial air conditioner)
  • Page 69 Fault and Status Display Table 9,000/12,000 Systems Failure of startup of compressor Blinks for 11 times High discharge temperature Blinks for Blinks for protection of compressor 4 times 7 times Overload protection Blinks for Blinks for 8 times 6 times Overcurrent protection for the Blinks for Blinks for...
  • Page 70 Fault and Status Display Table 9,000/12,000 Systems Frequency limit/decrease for Blinks for Blinks for overload 6 times 3 times Frequency limit/decrease for Blinks for Blinks for Blinks for module temperature protection 6 times 6 times 11 times Oil return in cooling Blinks for 7 times Cold air prevention...
  • Page 71 Troubleshooting 18,000/24,000 btuh Units Indoor Unit Display Outdoor Unit Method Display Method (repeated every 5 Malfunction A/C Status Possible Causes seconds) Name Indoor Operation o = Off Display Indicator n = Illuminated « = Blink Possible reasons: 1. Refrig- erant was superabundant; During cooling and drying op- 2.
  • Page 72 Troubleshooting 18,000/24,000 btuh Units, cont. Indoor Unit Display Outdoor Unit Method Display Method (repeated every 5 Malfunction A/C Status Possible Causes seconds) Name Indoor Cool o = Off Display Indicator n = Illuminated « = Blink 1. Loosening or bad contact of indoor ambient temp sensor and main- During cooling and drying...
  • Page 73 Troubleshooting 18,000/24,000 btuh Units, cont. Indoor Unit Display Outdoor Unit Method Display Method (repeated every 5 Malfunction A/C Status Possible Causes seconds) Name Indoor o = Off Cool Indicator Display n = Illuminated « = Blink Limit/decrease All loads operate normally, Refer to the malfunction Off 3S and frequency due...
  • Page 74 Troubleshooting 18,000/24,000 btuh Units, cont. Indoor Unit Display Outdoor Unit Method Display Method (repeated every 5 Malfunction A/C Status Possible Causes seconds) Name Indoor Heating o = Off Display Indicator n = Illuminated « = Blink Defrosting Off 3S and Defrosting will occur in It’s the normal state blink once...
  • Page 75 Troubleshooting 18,000/24,000 btuh Units, cont. Indoor Unit Display Outdoor Unit Method Display Method (repeated every 5 Malfunction seconds) A/C Status Possible Causes Name Indoor Heating o = Off Display Indicator n = Illuminated « = Blink Decrease fre- quency due to All loads operate normally, Refer to malfunction high tempera-...
  • Page 76 Troubleshooting 18,000/24,000 btuh Units, cont. Outdoor Unit Indoor Unit Display Display Method Method (repeated every 5 Malfunction seconds) A/C Status Possible Causes Name o = Off Indoor Heating n = Illuminated Display Indicator « = Blink Malfunction of Off 3s and During cooling and drying Supply voltage is unstable voltage drop-...

  • Page 77: Error Code Diagnostics

    Error Code Diagnostics C5 Error Code 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 78: Error Code Diagnostics

    Error Code Diagnostics EE, EU, FH Error Codes Fault & Status Possible Causes EEProm Malfuntion Status: 1. Faulty outdoor control board, replace AP1 During cooling & dehumidifying, indoor unit operates while other functions stop; During heating operation, complete unit stops 1.
  • Page 79 Error Code Diagnostics E1 - E3 Error Codes Fault & Status Possible Causes High Pressure Protection of System 1. Refrigerant overcharge Status: 2. Dirty outdoor coil During cooling & dehumidifying, indoor unit 3. Blockage of airflow operates while other functions stop; During 4.
  • Page 80 Error Code Diagnostics E4 Error Code High Discharge Temperature Protection of 1. Faulty outdoor temperature sensor Compressor. 2. Refrigerant leak Status: 3. Poor airflow of outdoor unit Cooling operation, compressor stops while 4. Follow Troubleshooting procedure indoor fans runs. Heating operation, complete unit stops Start Troubleshooting Normal protection, outdoor...
  • Page 81 Error Code Diagnostics E5 - E6 Error Codes 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 82 Error Code Diagnostics E6 Error Code 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 Start Troubleshooting Check for proper wiring of Did the unit operate normally before indoor and outdoor units with...
  • Page 83 Error Code Diagnostics E8 Error Code Overload System Protection Problem 1. Incorrect refrigerant charge Status: 2. Metering device problem Cooling operation, compressor stops while 3. Compressor failure indoor fans runs. Heating operation, complete unit stops Start Troubleshooting after unit is powered off for 20 minutes Is the overload protector positioned and wired...
  • Page 84 Error Code Diagnostics F1 - F5 Temperature Sensor Codes See troubleshooting chart next page Fault & Status Possible Causes Indoor ambient temperature sensor is open 1. Loose or bad contact of indoor temperature or short circuited. sensor Status: 2. Sensor wire leads not properly connected During cooling &...

  • Page 85: Troubleshooting

    Temperature Sensor Troubleshooting Start Temperature Sensor Troubleshooting Is the sensor wire plug loose from the AP2 board? Insert the plug correctly Sensor Connections Is problem corrected? Is there a short circuit in the wire or sensor? Replace sensor or correct wire problem Is problem corrected? Do the temperature sensor readings...
  • Page 86 Error Code Diagnostics F6 - F9 Temperature Sensor Codes See troubleshooting chart next page Fault & Status Possible Causes Decrease frequency due to overload. Status: 1. Refer to “E8” troubleshooting procedures All systems operate normal with decrease in capacity Oil Return in Cooling Normal function Decrease frequency due to overcurrent.
  • Page 87 Start-up Failure Troubleshooting Lc - Start-up Failure Start the unit after waiting 5 minutes Are the compressor wires (UVW) connected properly? Repair Connection, Is unit operating properly? Is refrigerant charge correct? Charge Unit according to service manual Does unit startup normally Compressor Terminals Replace the controller AP1...
  • Page 88 Error Code Diagnostics HC Error Code 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; During heating operation, complete unit stops Start Troubleshooting Check wiring of the reactor...
  • Page 89 Error Code Diagnostics H0 - H3 Error Codes Fault & Status Possible Causes Decrease frequency due to overload. Status: 1. Refer to “E8” troubleshooting procedures All systems operate normal with decrease in capacity Defrosting Status: Defrosting will occur in heating mode. Normal function Compressor will operate while indoor fan stops.
  • Page 90 Error Code Diagnostics H4 - H6 Error Codes Fault & Status Possible Causes System is Abnormal Status: 1. Refer to “E8” troubleshooting procedures During cooling mode, compressor will stop, indoor fan will run. Heating mode all units stop. IPM Protection Status: During cooling mode, compressor will stop, 1.
  • Page 91 Error Code Diagnostics H7 Error Code, continued on next page 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 92 Error Code Diagnostics H7 Error Code, 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 93 Error Code Diagnostics U1, U3, U5, U7, U9 Error Codes Fault & Status Possible Causes Compressor Phase Detection Error Status: During cooling mode, compressor will stop, 1. Replace outdoor control panel AP1 indoor fan will run. Heating mode all units stop.
  • Page 94 Error Code Diagnostics PH, PL, P5, P7, P8 Error Codes Fault & Status Possible Causes 1. Measure the voltage on “L” & “N” on line High DC Bus-Bar Voltage voltage, if it is higher then 265vac, correct Status: high voltage. During cooling mode, compressor will stop, 2.
  • Page 95 Error Code Diagnostics PU Error Code 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 96: Disassembly Of Indoor Unit 9,000/12,000 Btuh Models

    Disassembly of Indoor Unit 9,000 & 12,000 btuh Warning - Wait 10 minutes after power is disconnected before starting disassembly. 1. Before disassembly of indoor unit Before disassembly of indoor unit 2. Remove filter Step 1. Open the panel Step 2. Loosen the clasps on the filter, push the filter inward, then pull upward, removing the filter.
  • Page 97 Disassembly of Indoor Unit 9,000 & 12,000 btuh Warning - Wait 10 minutes after power is disconnected before starting disassembly. 3. Remove guide louver, continued Step 2. Remove the rotating shaft of the big guide lover from the groove, slightly bend the big guide Big guide louver louver to remove it.
  • Page 98 Disassembly of Indoor Unit 9,000 & 12,000 btuh Warning - Wait 10 minutes after power is disconnected before starting disassembly. 4. Remove panel, continued Step 2. Remove the screws holding the display. 5. Remove front case Electrical box cover 2 Screw Step 1.
  • Page 99 Disassembly of Indoor Unit 9,000 & 12,000 btuh Warning - Wait 10 minutes after power is disconnected before starting disassembly. 6. Remove swing fan blade Clamp Swing connecting rod Step 1. Remove the four screws holding the pro- tective grille, then remove the grille. Loosen the clamps holding the swing connector and remove Protective grilles` the connecting rod.
  • Page 100 Disassembly of Indoor Unit 9,000 & 12,000 btuh Warning - Wait 10 minutes after power is disconnected before starting disassembly. 7. Remove electrical box sub-assembly Heat exchanger thermistor Bonding wire Step 1. Remove the indoor tube temperature sensor Step 2. Remove the screws holding the bonding wire, then remove the wire Step 3.
  • Page 101 Disassembly of Indoor Unit 9,000 & 12,000 btuh Warning - Wait 10 minutes after power is disconnected before starting disassembly. 8. Remove evaporator sub-assembly Refrigerant piping Pipe clamp Screw Step 1. Remove the screws holding the pipe clamp. Screws Step 2. Remove the screws holding the evapora- tor sub-assembly, slightly reposition the tubing to Refrigerant piping remove the evaporator.
  • Page 102 Disassembly of Indoor Unit 9,000 & 12,000 btuh Warning - Wait 10 minutes after power is disconnected before starting disassembly. 9. Remove indoor fan blade and motor Step 1. Remove the screws holding the up/down Up/down swing motor swing motor to remove motor Step 2.
  • Page 103 Disassembly of Indoor Unit 9,000 & 12,000 btuh Warning - Wait 10 minutes after power is disconnected before starting disassembly. 9. Remove indoor fan blade and motor, cont. Screw Motor clamp Step 3. Remove the screws holding the motor clamp. Step 2.

  • Page 104: Disassembly Of Indoor Unit18,000 Btuh Model

    Disassembly of Indoor Unit 18,000 btuh Warning - Wait 10 minutes after power is disconnected before starting disassembly. 1. Before disassembly of indoor unit Before disassembly of indoor unit 2. Remove filter Step 1. Open the panel Step 2. Loosen the clasps on the filter, push the filter inward, then pull upward, removing the filter.
  • Page 105 Disassembly of Indoor Unit 18,000 btuh Warning - Wait 10 minutes after power is disconnected before starting disassembly. 3. Remove guide louver, continued Step 2. Remove the rotating shaft of the big guide lover from the groove, slightly bend the big guide louver to remove it.
  • Page 106 Disassembly of Indoor Unit 18,000 btuh Warning - Wait 10 minutes after power is disconnected before starting disassembly. 5. Remove front case Electrical box cover 2 Screw Step 1. Remove the screws fastening the electrical box cover to remove cove. Screws Clamps Step 2.
  • Page 107 Disassembly of Indoor Unit 18,000 btuh Warning - Wait 10 minutes after power is disconnected before starting disassembly. 6. Remove swing fan blade Clamp Step 1. Remove the clamps holding the swing fan Swing connecting rod connecting rod to remove the connecting rod. Step 2.
  • Page 108 Disassembly of Indoor Unit 18,000 btuh Warning - Wait 10 minutes after power is disconnected before starting disassembly. 7. Remove electrical box sub-assembly Heat exchanger thermistor Bonding wire Screw Step 1. Remove the indoor tube temperature sensor Step 2. Remove the screws holding the bonding wire, then remove the wire Step 3.
  • Page 109 Disassembly of Indoor Unit 18,000 btuh Warning - Wait 10 minutes after power is disconnected before starting disassembly. 8. Remove evaporator sub-assembly Refrigerant piping Pipe clamp Screw Step 1. Remove the screws holding the pipe clamp. Screws Step 2. Remove the screws holding the evapora- tor sub-assembly, slightly reposition the tubing to Refrigerant piping remove the evaporator.
  • Page 110 Disassembly of Indoor Unit 18,000 btuh Warning - Wait 10 minutes after power is disconnected before starting disassembly. 9. Remove indoor fan blade and motor Step 1. Remove the screws holding the up/down Up/down swing motor swing motor to remove motor Step 2.
  • Page 111 Disassembly of Indoor Unit 18,000 btuh Warning - Wait 10 minutes after power is disconnected before starting disassembly. 9. Remove indoor fan blade and motor, cont. Screw Motor clamp Step 3. Remove the screws holding the motor clamp. Step 4. Remove the fan blade and motor Step 5.

  • Page 112: Disassembly Of Indoor Unit24,000 Btuh Model

    Disassembly of Indoor Unit 24,000 btuh Warning - Wait 10 minutes after power is disconnected before starting disassembly. 1. Before disassembly of indoor unit Before disassembly of indoor unit 2. Remove filter Air Filter Step 1. Open the panel Step 2. Loosen the clasps on the filter, push the Hooks filter inward, then pull upward, removing the filter.
  • Page 113 Disassembly of Indoor Unit 24,000 btuh Warning - Wait 10 minutes after power is disconnected before starting disassembly. 3. Remove guide louver Step 1. Along the groove holding thje front panel, slide the rotor shaft outward to remove the front panel Step 2.
  • Page 114 Disassembly of Indoor Unit 24,000 btuh Warning - Wait 10 minutes after power is disconnected before starting disassembly. 5. Remove Axial bushing Axial bushing Step 1. Remove the axial bushing of horizontal Hooks louver to remove the guide louver Guide louver 6.
  • Page 115 Disassembly of Indoor Unit 24,000 btuh Warning - Wait 10 minutes after power is disconnected before starting disassembly. 7. Remove electrical box sub-assembly Temperature sensor Electrical box cover Step 1. Remove the indoor tube temperature sensor Step 2. Remove the screws holding the bonding wire, then remove the wire Step 3.
  • Page 116 Disassembly of Indoor Unit 24,000 btuh Warning - Wait 10 minutes after power is disconnected before starting disassembly. 8. Remove evaporator sub-assembly Step 1. Remove the clamps connecting the water tray and chassis, then remove the water tray. Step 2. Remove the screws holding the tubing clamp, then remove the clamp.
  • Page 117 Disassembly of Indoor Unit 24,000 btuh Warning - Wait 10 minutes after power is disconnected before starting disassembly. 8. Remove evaporator sub-assembly, cont. Step 4. Turn over the indoor unit and adjust the tubing to the position as shown by the broken line Evaporator Step 5.
  • Page 118 Disassembly of Indoor Unit 24,000 btuh Warning - Wait 10 minutes after power is disconnected before starting disassembly. 9. Remove indoor fan blade and motor, cont. Screws Step 1. Remove the two screws holding the step motor and remove the step motor. Step 2.

  • Page 119: Disassembly Of Outdoor Unit 9,000/12,000 Btuh Models

    Disassembly of Outdoor Unit 9,000 & 12,000 btuh Warning - Wait 10 minutes after power is disconnected before starting disassembly. 4. Remove panel and grille 1. Before Disassembly Remove the screws holding the panel, Remove the screws con- necting the panel grille and panel, then loosen clamp. Panel Grille 5.
  • Page 120 Disassembly of Outdoor Unit, continued 9,000 & 12,000 btuh Warning - Wait 10 minutes after power is disconnected before starting disassembly. 10. Remove electric reactor 7. Remove fan blade Remove the screws holding the reactor to remove Remove the bot holding the fan blade on motor shaft, then re- move gasket and washer.
  • Page 121 Disassembly of Outdoor Unit, continued 9,000 & 12,000 btuh Warning - Wait 10 minutes after power is disconnected before starting disassembly. 13. Remove 4-way valve assembly Properly remove refrigerant charge, then remove valve by heating brazed joints and withdrawing pipe from valve. 4-way valve 14.

  • Page 122: Disassembly Of Outdoor Unit 18,000 Btuh Models

    Disassembly of Outdoor Unit 18,000 btuh Warning - Wait 10 minutes after power is disconnected before starting disassembly. 4. Remove front panel and grille 1. Before Disassembly Remove the screws holding the grille and panel, remove the grille. Remove remaining screws holding the panel, pull panel upward, loosen the clamp on the right side, then rotate panel to the left and remove panel.
  • Page 123 Disassembly of Outdoor Unit 18,000 btuh Warning - Wait 10 minutes after power is disconnected before starting disassembly. 6. Remove fan blade 8. Remove sound proof barrier Remove the bolt holding the blade then remove. Carefully remove barrier Barrier Fan Blade 9.
  • Page 124 Disassembly of Outdoor Unit 18,000 btuh Warning - Wait 10 minutes after power is disconnected before starting disassembly. 11. Remove 4-way valve 14. Remove condenser Remove the screws holding the condenser assembly and chassis, Properly remove refrigerant charge, then remove valve by heating then lift and remove brazed joints and withdrawing pipe from valve.

  • Page 125: Disassembly Of Outdoor Unit 24,000 Btuh Models

    Disassembly of Outdoor Unit 24,000 btuh Warning - Wait 10 minutes after power is disconnected before starting disassembly. 7. Remove electrical box assembly 3. Remove back panel Remove the screws holding the top panel and side panels. Remove Remove crews holding back panel from chassis and motor the screws holding the front panel and remove the panel support Top Panel...
  • Page 126 Disassembly of Outdoor Unit, continued 24,000 btuh Warning - Wait 10 minutes after power is disconnected before starting disassembly. 7a. Remove electrical box (secondary) 6. Remove right side panel Remove screws holding right side panel from chassis, valve sup- Remove screws holding secondary electrical box, then remove port and condenser, then remove panel Electrical box Right Side Panel...
  • Page 127 Disassembly of Outdoor Unit, continued 24,000 btuh Warning - Wait 10 minutes after power is disconnected before starting disassembly. 10. Remove motor and support 12. Remove gas and liquid valves Remove the screws holding the motor, remove wire terminals, Remove the screws holding the valve sub-assembly. Remove any then remove the motor.
  • Page 128 Disassembly of Outdoor Unit, continued 24,000 btuh Warning - Wait 10 minutes after power is disconnected before starting disassembly. 15. Remove condenser support plate Remove the screws holding support plate, then remove plate Support Plate 16. Remove chassis and condenser Pull condenser upward to remove Condenser Chassis...

  • Page 129: Appendix 1 - 3 Temperature Sensor Resistance Tables

    Appendix 1: Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor Units (15K) Temp Temp Resis- Temp Temp Resis- Temp Temp Resis- (ºC) (ºF) tance (ºC) (ºF) tance (ºC) (ºF) tance (kΩ) (kΩ) (kΩ) -2.2 138.1 91.4 10.63 185.0 1.594 -0.4 128.6...
  • Page 130 Appendix 1: Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor Units (15K) Temp Temp Resis- Temp Temp Resis- Temp Temp Resis- (ºC) (ºF) tance (ºC) (ºF) tance (ºC) (ºF) tance (kΩ) (kΩ) (kΩ) 50.0 29.9 143.6 3.454 237.2 0.678 51.8 28.51...
  • Page 131 Appendix 2: Resistance Table of Outdoor and Indoor Tube Temperature Sensors (20K) Temp Temp Resis- Temp Temp Resis- Temp Temp Resis- (ºC) (ºF) tance (ºC) (ºF) tance (ºC) (ºF) tance (kΩ) (kΩ) (kΩ) -2.2 181.4 91.4 14.18 185.0 2.125 -0.4 171.4 93.2 13.59...
  • Page 132 Appendix 2: Resistance Table of Outdoor and Indoor Tube Temperature Sensors (20K) Temp Temp Resis- Temp Temp Resis- Temp Temp Resis- (ºC) (ºF) tance (ºC) (ºF) tance (ºC) (ºF) tance (kΩ) (kΩ) (kΩ) 50.0 39.87 143.6 4.605 237.2 0.904 51.8 38.01 145.4 4.443...
  • Page 133 Appendix 3: Resistance Table of Outdoor Discharge Temperature Sensor (50K) Temp Temp Resis- Temp Temp Resis- Temp Temp Resis- (ºC) (ºF) tance (ºC) (ºF) tance (ºC) (ºF) tance (kΩ) (kΩ) (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...
  • Page 134 Appendix 3: Resistance Table of Outdoor Discharge Temperature Sensor (50K) Temp Temp Resis- Temp Temp Resis- Temp Temp Resis- (ºC) (ºF) tance (ºC) (ºF) tance (ºC) (ºF) tance (kΩ) (kΩ) (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...
  • Page 135 Gree Electric Appliances, Inc. (C) 2014 Cat. No. DFS-TERRA-HP-2SM Version: 2.0...

This manual is also suitable for:

Terra12hp230v1aTerra24hp230v1aTerra18hp230v1a

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