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CONVECTAIR 500004479 Service Manual

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IMPORTANT SAFETY INFORMATION:
Read this manual first before attempting to install or use this electric fireplace. Always comply with the
warnings and safety instructions contained in this manual to prevent personal injury or property damage.
7401290100R00R00
Service Manual
Model
Indoor Unit
9K
500004479
12K
500004491
18K
500004493
24K
500004495
Outdoor Unit
500004490
500004492
500004494
500004496

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  • Page 1 Service Manual Model Indoor Unit Outdoor Unit 500004479 500004490 500004491 500004492 500004493 500004494 500004495 500004496 IMPORTANT SAFETY INFORMATION: Read this manual first before attempting to install or use this electric fireplace. Always comply with the warnings and safety instructions contained in this manual to prevent personal injury or property damage.

  • Page 3: Table Of Contents

    Table of Contents Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 .

  • Page 5: Safety Precautions

    Safety Precautions Contents 1 . Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 .

  • Page 6: Precautions

    1. Precautions To prevent personal injury, or property or unit damage, CAUTION adhere to all precautionary measures and instructions • While unpacking be careful of sharp edges around the outlined in this manual . Before servicing a unit, refer to unit as well as the edges of the fins on the condenser and this service manual and its relevant sections .
  • Page 7 1. Precautions CSA B52 . All field joints shall be accessible for inspection WARNING For Using Flammable Refrigerant prior to being covered or enclosed . 1 . Installation (Space) - that protection devices, piping, and fittings shall be protected as far as possible against adverse - That the installation of pipe-work shall be kept to a environmental effects, for example, the danger of water minimum .

  • Page 8: Information Servicing (For Flammable Materials)

    2. Information Servicing (For flammable materials) 14 . Qualification of workers which flammable refrigerant can possibly be released to the surrounding space . Any maintenance, service and repair operations must be required qualification of the working personnel . Every • Prior to work taking place, the area around the equipment working procedure that affects safety means shall only be is to be surveyed to make sure that there are no carried out by competent persons that joined the training...
  • Page 9 2. Information Servicing (For flammable materials) 2.10 Sealed electrical components shall set at a percentage of the LFL of the refrigerant and shall be calibrated to the refrigerant employed, and be replaced the appropriate percentage of gas (25 % maximum) is •...
  • Page 10 2. Information Servicing (For flammable materials) 2.15 Charging procedures • Do not exceed the maximum working pressure of the cylinder, even temporarily . • In addition to conventional charging procedures, the • When the cylinders have been filled correctly and the following requirements shall be followed: process completed, make sure that the cylinders and - Works shall be undertaken with appropriate tools...
  • Page 11 2. Information Servicing (For flammable materials) 2.19 Transportation, marking and storage for units Transport of equipment containing flammable refrigerants Compliance with the transport regulations Marking of equipment using signs Compliance with local regulations Disposal of equipment using flammable refrigerants Compliance with national regulations Storage of equipment/appliances The storage of equipment should be in accordance with the manufacturer’s instructions .

  • Page 12: Specifications

    Specifications Contents 1 . Model Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 .

  • Page 13: Model Reference

    Model Reference 1. Model Reference Refer to the following table to determine the specific indoor and outdoor unit model . Indoor Unit Model Outdoor Unit Model Capacity (Btu/h) Power Supply MSAG11A-09HRFN10-B1E MOX230-09HFN10-B1E 9k Entry Tier Series MSAG11B-09HRFN10-B1 MOX230-09HFN10-B1E 9k Energy Star Series 115V~, 60Hz, 1Phase MSAG11B-12HRFN10-B1 MOX230-12HFN10-B1...

  • Page 14: Pipe Length And The Drop Height

    Pipe Length and Drop Height 2. Pipe Length and Drop Height The length and elevation of connection pipe are shown in the table below . If the pipe length exceeds max pipe length, additional refrigerant should be charged to ensure nominal cooling/heating capacity . Capacity(Btu/h) Standard Length Max Pipe Length...

  • Page 15: Air Velocity And Temperature Distributions

    Air Velocity and Temperature Distributions 3. Air Velocity and Temperature Distributions 6k-Cooling (ID: 27°C/80 .6°F, OD: 35°C/95°F) Discharge Angle 58° Airflow velocity distributions Velocity (ft/s) Flow Distance (ft) Temperature distributions Temperature (F) Flow Distance (ft)
  • Page 16 Air Velocity and Temperature Distributions 6k-Heating (ID: 20°C/68°F, OD: 7°C/44 .6°F) Discharge Angle 90° Airflow velocity distributions Velocity (ft/s) Flow Distance (ft) Temperature distributions Temperature (F) Flow Distance (ft)
  • Page 17 Air Velocity and Temperature Distributions 9k-Cooling (ID: 27°C/80 .6°F, OD: 35°C/95°F) Discharge Angle 58° Airflow velocity distributions Velocity (ft/s) Flow Distance (ft) Temperature distributions Temperature (F) Flow Distance (ft)
  • Page 18 Air Velocity and Temperature Distributions 9k-Heating (ID: 20°C/68°F, OD: 7°C/44 .6°F) Discharge Angle 90° Airflow velocity distributions Velocity (ft/s) Flow Distance (ft) Temperature distributions Temperature (F) Flow Distance (ft)
  • Page 19 Air Velocity and Temperature Distributions 12k-Cooling (ID: 27°C/80 .6°F, OD: 35°C/95°F) Discharge Angle 58° Airflow velocity distributions Velocity (ft/s) Flow Distance (ft) Temperature distributions Temperature (F) Flow Distance (ft)
  • Page 20 Air Velocity and Temperature Distributions 12k-Heating (ID: 20°C/68°F, OD: 7°C/44 .6°F) Discharge Angle 90° Airflow velocity distributions Velocity (ft/s) Flow Distance (ft) Temperature distributions Temperature (F) Flow Distance (ft)
  • Page 21 Air Velocity and Temperature Distributions 18k-Cooling (ID: 27°C/80 .6°F, OD: 35°C/95°F) Discharge Angle 50° Airflow velocity distributions Velocity (ft/s) Flow Distance (ft) Temperature distributions Temperature (F) Flow Distance (ft)
  • Page 22 Air Velocity and Temperature Distributions 18k-Heating (ID: 20°C/68°F, OD: 7°C/44 .6°F) Discharge Angle 84° Airflow velocity distributions Velocity (ft/s) Flow Distance (ft) Temperature distributions Temperature (F) Flow Distance (ft)
  • Page 23 Air Velocity and Temperature Distributions 24k-Cooling (ID: 27°C/80 .6°F, OD: 35°C/95°F) Discharge Angle 50° Airflow velocity distributions Velocity (ft/s) Flow Distance (ft) Temperature distributions Temperature (F) Flow Distance (ft)
  • Page 24 Air Velocity and Temperature Distributions 24k-Heating (ID: 20°C/68°F, OD: 7°C/44 .6°F) Discharge Angle 77° Airflow velocity distributions Velocity (ft/s) Flow Distance (ft) Temperature distributions Temperature (F) Flow Distance (ft)
  • Page 25 Air Velocity and Temperature Distributions 30k/33k-Cooling (ID: 27°C/80 .6°F, OD: 35°C/95°F) Discharge Angle 55° Airflow velocity distributions Velocity (ft/s) Flow Distance (ft) Temperature distributions Temperature (F) Flow Distance (ft)
  • Page 26 Air Velocity and Temperature Distributions 30k/33k-Heating (ID: 20°C/68°F, OD: 7°C/44 .6°F) Discharge Angle 75° Airflow velocity distributions Velocity (ft/s) Flow Distance (ft) Temperature distributions Temperature (F) Flow Distance (ft)
  • Page 27 Air Velocity and Temperature Distributions 36k-Cooling (ID: 27°C/80 .6°F, OD: 35°C/95°F) Discharge Angle 55° Airflow velocity distributions Velocity (ft/s) Flow Distance (ft) Temperature distributions Temperature (F) Flow Distance (ft)
  • Page 28 Air Velocity and Temperature Distributions 36k-Heating (ID: 20°C/68°F, OD: 7°C/44 .6°F) Discharge Angle 75° Airflow velocity distributions Velocity (ft/s) Flow Distance (ft) Temperature distributions Temperature (F) Flow Distance (ft)

  • Page 29: Refrigerant Cycle Diagrams

    Refrigerant Cycle Diagrams 4. Refrigerant Cycle Diagrams MOX230-06HFN10-M1X, MOX330-09HFN10-M1X, MOX330-12HFN10-M1X, MOX230-09HFN10-B1, MOX230-12HFN10-B1, MOX230-09HFN10-M1, MOX230-12HFN10-M1 Liquid side Strainer Strainer 2-Way Valve Indoor Heat Muffler Outdoor Heat 4-Way Valve Exchanger Exchanger T4-Sensor T1-Sensor (Outdoor) (Indoor) T3-Sensor (Condensor) TP-Sensor (Discharge) T2-Sensor (Evaporator) Gas side Heating 3-Way Valve Cooling...
  • Page 30 Refrigerant Cycle Diagrams MOX430-18HFN10-M1X, MOX430-18HFN10-M1 Cold Plate Liquid side Throttle orifice Strainer 2-Way Valve Indoor Heat Muffler Outdoor Heat 4-Way Valve Exchanger Exchanger Muffler T4-Sensor T1-Sensor (Outdoor) (Indoor) T3-Sensor (Condensor) TP-Sensor (Discharge) T2-Sensor (Evaporator) Gas side Heating 3-Way Valve Cooling Compressor MOX330-18HFN10-M1E Liquid side...
  • Page 31 Refrigerant Cycle Diagrams MOD30-24HFN10-M1X, MOD30-30HFN10-M1E Cold Plate Liquid side Throttle orifice Strainer Strainer 2-Way Valve Indoor Heat Outdoor Heat 4-Way Valve Exchanger Exchanger Muffler T4-Sensor T1-Sensor (Outdoor) (Indoor) T3-Sensor (Condensor) TP-Sensor (Discharge) T2-Sensor (Evaporator) Gas side Heating 3-Way Valve Cooling Compressor MOX430-24HFN10-M1E Cold Plate...
  • Page 32 Refrigerant Cycle Diagrams MOD30-24HFN10-M1 Cold Plate Liquid side Throttle orifice Strainer 2-Way Valve Indoor Heat Outdoor Heat 4-Way Valve Exchanger Exchanger Muffler T4-Sensor T1-Sensor (Outdoor) (Indoor) T3-Sensor (Condensor) TP-Sensor (Discharge) T2-Sensor (Evaporator) Gas side Heating 3-Way Valve Cooling Compressor MOD30-33HFN10-M1X Cold Valve Liquid side Throttle orifice...
  • Page 33 Refrigerant Cycle Diagrams MOD30-36HFN10-M1E Cold Plate Liquid side Throttle orifice Strainer Strainer 2-Way Valve Indoor Heat Outdoor Heat 4-Way Valve Exchanger Exchanger P-Sensor Muffler T4-Sensor T1-Sensor P-Sensor (Outdoor) (Indoor) T3-Sensor (Condensor) TP-Sensor (Discharge) T2-Sensor (Evaporator) Gas side Heating 3-Way Valve Cooling Accumulator Compressor...

  • Page 34: Electrical Wiring Diagrams

    Electrical Wiring Diagrams 5. Electrical Wiring Diagrams Indoor and outdoor unit wiring diagram Indoor Unit Outdoor Unit IDU Model IDU Wiring Diagram ODU Model Power Supply MSAG11A-09HRFN10-B1E MOX230-09HFN10-B1E 16022000040773 MSAG11B-12HRFN10-B1E MOX230-12HFN10-B1E MSAG11B-09HRFN10-B1 MOX230-09HFN10-B1 16022000040956 MSAG11B-12HRFN10-B1 MOX230-12HFN10-B1 MSAG11A-09HRFN10-M1E MOX230-09HFN10-M1E MSAG11B-12HRFN10-M1E MOX230-12HFN10-M1E 16022000040610 MSAG11C-18HRFN10-M1E MOX330-18HFN10-M1E...
  • Page 35 Electrical Wiring Diagrams Outdoor unit printed circuit board diagram Outdoor Unit ODU Model ODU Printed Circuit Board MOX230-09HFN10-B1 MOX230-12HFN10-B1 17122000062141 MOX230-09HFN10-B1E MOX230-12HFN10-B1E MOX230-09HFN10-M1E MOX230-09HFN10-M1 MOX230-12HFN10-M1 MOX230-12HFN10-M1E 17122000057661 MOX330-18HFN10-M1E MOX230-06HFN10-M1X MOX330-09HFN10-M1X MOX330-12HFN10-M1X MOX430-18HFN10-M1 17122000048066 MOX430-18HFN10-M1X MOD30-24HFN10-M1 17122000048064 MOX430-24HFN10-M1E MOD30-24HFN10-M1X MOD30-30HFN10-M1E 17122300007152 MOD30-33HFN10-M1X MOD30-36HFN10-M1E...
  • Page 36 Electrical Wiring Diagrams Indoor unit wiring diagram: 16022000040253...
  • Page 37 Electrical Wiring Diagrams Indoor unit wiring diagram: 16022000040232...

  • Page 38: Main Control Board

    Electrical Wiring Diagrams Outdoor unit wiring diagram: 16022000040773 WIRING DIAGRAM INDOOR UNIT POWER SUPPLY FUSE BLUE FUSE CRANKCASE CHASSIS REVERSING EARTH TEMP_SENSOR HEATER HEATER VALVE MAIN CONTROL BOARD TEST PORT DC FAN COMPRESSOR MOTOR REACTOR CN1A INPUT 115 V AC DC FAN MOTOR CN17 OUTPUT 115 V AC...
  • Page 39 Electrical Wiring Diagrams Outdoor unit wiring diagram: 16022000040956 WIRING DIAGRAM INDOOR UNIT POWER SUPPLY FUSE BLUE FUSE CRANKCASE CHASSIS REVERSING EARTH TEMP_SENSOR HEATER HEATER VALVE MAIN CONTROL BOARD COMPRESSOR TEST PORT DC FAN MOTOR REACTOR CN1A INPUT 115 V AC DC FAN MOTOR CN17 OUTPUT 115 V AC...
  • Page 40 Electrical Wiring Diagrams Outdoor unit wiring diagram: 16022000040610 WIRING DIAGRAM INDOOR UNIT POWER SUPPLY FUSE BLUE FUSE CRANKCASE CHASSIS REVERSING EARTH TEMP_SENSOR HEATER HEATER VALVE MAIN CONTROL BOARD TEST PORT COMPRESSOR DC FAN MOTOR CN1A INPUT 230 V AC DC FAN CN17 OUTPUT 230 V AC MOTOR U V W...
  • Page 41 Electrical Wiring Diagrams Outdoor unit wiring diagram: 16022000040790 WIRING DIAGRAM INDOOR UNIT POWER SUPPLY FUSE BLUE FUSE CRANKCASE CHASSIS REVERSING TEMP_SENSOR EARTH HEATER HEATER VALVE MAIN CONTROL BOARD COMPRESSOR TEST PORT DC FAN MOTOR CN2 / 7 / 8 INPUT 230 V AC DC FAN CN16 OUTPUT 230 V AC MOTOR...
  • Page 42 Electrical Wiring Diagrams Outdoor unit wiring diagram: 16022000040311 WIRING DIAGRAM INDOOR UNIT POWER SUPPLY FUSE BLUE FUSE CRANKCASE CHASSIS REVERSING EARTH TEMP_SENSOR HEATER HEATER VALVE MAIN CONTROL BOARD COMPRESSOR TEST PORT DC FAN MOTOR CN1A INPUT 230 V AC CN17 OUTPUT 230 V AC DC FAN MOTOR CN60 OUTPUT 230 V AC...
  • Page 43 Electrical Wiring Diagrams Outdoor unit wiring diagram: 16022000040313 WIRING DIAGRAM INDOOR UNIT POWER SUPPLY FUSE BLUE FUSE CRANKCASE CHASSIS REVERSING TEMP_SENSOR HEATER HEATER VALVE EARTH MAIN CONTROL BOARD COMPRESSOR DC FAN TEST PORT MOTOR CN2 / 7 / 8 INPUT 230 V AC CN16 OUTPUT 230 V AC DC FAN CN60 OUTPUT 230 V AC...
  • Page 44 Electrical Wiring Diagrams Outdoor unit wiring diagram: 16022000040331 BLACK OPTIONAL BLUE OPTIONAL: OPTIONAL TOP TEMPERATURE PROTECTION OF COMPRESSOR COMP-TOP OPTIONAL OPTIONAL YELLOW OPTIONAL YELLOW BLACK BLUE OPTIONAL MAIN CONTROL BOARD HEAT 1 The electric heating belt of compressor WHITE OPTIONAL HEAT 2 WHITE The electric heating...
  • Page 45 Electrical Wiring Diagrams Outdoor unit wiring diagram: 16022000040650 COMPRESSOR WHITE BLUE YELLOW BLACK BLUE HIGH / LOW CHASSIS HEATER CRANKCASE HEATER REVERSING VALVE COMPRESSOR PRESSURE SWITCH MAIN CONTROL BOARD TEMP_SENSOR DC FAN MOTOR BLUE BROWN WHITE BROWN BLUE FUSE FUSE DC FAN TEST PORT MOTOR...
  • Page 46 Electrical Wiring Diagrams Outdoor unit printed circuit board diagram: 17122000062141...
  • Page 47 Electrical Wiring Diagrams Name CN # Meaning TESTPORT Used for testing (Output: 0~5 V DC) DC-FAN Connect to DC fan (Output: 0~310 V AC) Connect to pipe temperature sensor T3, ambient temperature sensor TP T4 T3 CN21 T4, exhaust temperature sensor TP(Output: 0~5 VDC) HEAT1 CN17 Connect to compressor heater, 115V AC when is ON...
  • Page 48 Electrical Wiring Diagrams Outdoor unit printed circuit board diagram: 17122000057661...
  • Page 49 Electrical Wiring Diagrams Name CN # Meaning TESTPORT Used for testing Connect to electric expansion valve (Output: 0~2V DC) DC-FAN Connect to DC fan (Output: 0~310 V AC) Connect to pipe temperature sensor T3, ambient temperature sensor TP T4 T3 CN21 T4, exhaust temperature sensor TP(Output: 0~5 VDC) HEAT1...
  • Page 50 Electrical Wiring Diagrams Outdoor unit printed circuit board diagram: 17122000048064& 17122000048066 RC 2 VU B...
  • Page 51 Electrical Wiring Diagrams Name CN # Meaning Earth: connect to Ground Power Supply CN67 N_in: connect to N-line (230V AC input) L_in: connect to L-line (230V AC input) S: connect to indoor unit communication (230V AC input) 4-WAY CN60 Connect to 4 way valve (Output: 230V AC) AC-FAN Connect to AC fan HEAT2...
  • Page 52 Electrical Wiring Diagrams Outdoor unit printed circuit board diagram: 17122300007152...
  • Page 53 Electrical Wiring Diagrams Name CN # Meaning COMPRESSOR Connect to compressor (Output: 0~310V AC) DC-FAN1 CN32 Connect to DC fan (Output: 0~310V AC) TESTPORT CN45 Used for testing HEAT_Y CN38 Connect to compressor heater (Output: 230V AC) CN37 Connect to 4 way valve 1 (Output: 230V AC) 4-WAY CN25 Connect to 4 way valve 2 (Output: 230V AC)
  • Page 54 Electrical Wiring Diagrams Name CN # Meaning EEVA CN17 EEVB CN16 EEVC CN22 EEVD CN14 EEVE CN13 Connect to electric expansion valve (Output: 0~12V DC) EEVF EEV1 CN53 EEV2 CN44 EEV3 H_YL CN49 Connect to high pressure sensor DC-FAN2 CN10 Connect to DC fan (Output: 0~310V AC) Note: This section is for reference only.

  • Page 55: Product Features

    Product Features Contents 1 . Display Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 .

  • Page 56: Display Function

    1. Display Function Unit display functions CN # Meaning When Wireless Control feature is activated(For APP control units) Displays temperature, operation feature and Error codes • TIMER ON is set. (if the unit is OFF, remains on when TIMER ON is set ) (for 3 seconds •...

  • Page 57: Safety Features

    2. Safety Features Compressor three-minute delay at restart Compressor functions are delayed for up to ten seconds upon the first startup of the unit, and are delayed for up to three minutes upon subsequent unit restarts . Automatic shutoff based on discharge temperature If the compressor discharge temperature exceeds a certain level for a period of time, the compressor ceases operation .

  • Page 58: Basic Features

    3. Basic Functions 3.1 Abbreviation 2) When the compressor runs continuously for more than 120 minutes . Unit element abbreviations - If the following conditions are satisfied, the Abbreviation Element compressor ceases operation . Indoor room temperature - Calculated frequency (fb) is less than minimum limit frequency (FminC) .

  • Page 59: Heating Mode(Heat Pump Units)

    3. Basic Functions For AC fan motor units: 3.3.5 Evaporator Temperature Protection T1-Tsc T1-Tsc Resume Hold (H-L)x3/4+L (H-L)x3/4+L (H-L)x2/4+L Decrease (H-L)x2/4+L (H-L)x1/4+L (H-L)x1/4+L • Off: Compressor stops . • Decrease: Decrease the running frequency to the lower level per 1 minute . T1-Tsc 3.3.3 Outdoor Fan Control •...
  • Page 60 3. Basic Functions 3.4.3 Outdoor Fan Control: • The outdoor unit will be run at different fan speed according to T4 and compressor running frequency . • For different outdoor units, the fan speeds are different . Setting fan speed TEH5- TE1 TEH4- TE1 TEL5- TE1...

  • Page 61: Auto-Mode

    3. Basic Functions • Condition 6, if any one of the following conditions is satisfied, defrosting ends and the machine switches to normal heating mode: Cooling - Unit runs for 10 minutes consecutively in defrosting Ts+3 Cooling Drying mode . Ts+2 - T3 rises above 10°C (50°F) .

  • Page 62: Timer Function

    3. Basic Functions 3.10 Auto-Restart function • Forced defrosting mode: - Press AUTO/COOL button continuously for 5 • The indoor unit has an auto-restart module that seconds under forced cooling mode to enter this allows the unit to restart automatically . The module mode .

  • Page 63: Eco Function (Optional)

    3. Basic Functions 3.15 ECO function (Optional) • Used to enter the energy efficient mode . - Under cooling mode, press ECO button, the remote controller will adjust the temperature automatically to 24°C/75 .2°F, fan speed of Auto to save energy (but only if the set temperature is less than 24°C/75 .2°F) .

  • Page 64: Maintenance

    Maintenance Contents 1 . First Time Installation Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 .

  • Page 65: First Time Installation Check

    Maintenance 1. First Time Installation Check To prevent air and moisture from affecting the air conditioner’s performance, the indoor unit, as well as the Air and moisture trapped in the refrigerant system affects pipes between the indoor and outdoor unit, must be leak the performance of the air conditioner by: tested and evacuated .
  • Page 66 Maintenance Procedure: • If the pressure successfully reaches -0 .1 MPa (14 .5 Psi), fully close the Handle Lo valve, then Tighten the flare nuts of the indoor and outdoor units, cease vacuum pump operations . and confirm that both the 2- and 3-way valves are b .

  • Page 67: Refrigerant Recharge

    Maintenance 2. Refrigerant Recharge (Liquid side) (Outdoor unit) (Indoor unit) Two-way valve Open (Gas side) Three-way valve Check valve Open Charging cylinder OPEN close Temperature m A A CO M sensor Electronic Scale Procedure: Operate the air conditioner in cooling mode to charge the system with liquid refrigerant .

  • Page 68: Re-Installation

    Maintenance 3. Re-Installation 3.1 Indoor Unit Collecting the refrigerant into the outdoor unit (Liquid side) (Indoor unit) (Outdoor unit) Two-way valve Close (Gas side) Three way valve Open close close Procedure: Close the 3-way valve so that the gauge rests between 0 .3 MPa (43 .5 Psi) and 0 .5 MPa (72 .5 Psi) .
  • Page 69 Maintenance Air purging with vacuum pump (Liquid side) (Outdoor unit) (Indoor unit) Two-way valve Close (Gas side) Manifold valve Three-way valve Compound meter Pressure Close gauge -0 .1MPa Handle Lo Handle Hi Charge hose Charge hose Vacuum pump Vacuum pump Procedure: •...

  • Page 70: Outdoor Unit

    Maintenance 3.2 Outdoor Unit Evacuation for the whole system (Liquid side) (Indoor unit) (Outdoor unit) Two-way valve Open (Gas side) Three way valve Open OPEN Vacuum pump CLOSE Procedure: Wait for 5 minutes then check whether the gauge needle moves after turning off the vacuum pump . If Confirm that the 2- and 3-way valves are opened .

  • Page 71: Refrigerant Charging

    Maintenance Refrigerant charging (Liquid side) (Indoor unit) (Outdoor unit) Two-way valve Open (Gas side) Three way valve Check valve Open Charging cylinder OPEN CLOSE Temperature m A A CO M Sensor Electronic Scale Procedure: Fully open the Handle Lo manifold valve, 2- and 3-way valves .
  • Page 72 Troubleshooting Contents 1 . Safety Caution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 .

  • Page 73: Troubleshooting

    Troubleshooting TS12-S Inverter compressor drive error diagnosis and solution TS26-INV System Pressure protection(low or high pressure) diagnosis and solution TS14 IDUs mode conflict Diagnosis and Solution LP Low temperature protection of outdoor uni diagnosis and solution TS27-INV: High temperature protection of condenser diagnosis and solution TS30: PFC module protection diagnosis and solution TS31: Communication error between outdoor main chip and compressor driven chip diagnosis and solution...

  • Page 74: Safety Caution

    Troubleshooting 1. Safety Caution WARNING Be sure to turn off all power supplies or disconnect all wires to avoid electric shock . While checking indoor/ outdoor PCB, please equip oneself with antistatic gloves or wrist strap to avoid damage to the board . WARNING Electricity remains in capacitors even when the power supply is off .

  • Page 75: General Troubleshooting

    Troubleshooting 2. General Troubleshooting 2.1 Error Display (Indoor Unit) When the indoor unit encounters a recognized error on different models, an error code will be displayed; These error codes are described in the following tables: Name CN # Defrost Active clean Heating in room temperature under 8°C Normal Display, not error code...
  • Page 76 Troubleshooting Name CN # PC 01 ODU voltage protection TS10-S PC 02 Compressor top (or IPM) temp. protection TS11-S-INV PC 04 Inverter compressor drive error TS12-S PC 03 Pressure protection(low or high pressure)(for some models) TS26-INV PC 0L Low ambient temperature protection(for some models) ---- IDUs mode conflict(Multi-zone) TS14...
  • Page 77 Troubleshooting 2.2 Error Display (Outdoor Unit with auxiliary board) Malfunction or Protection CN # Defrost Normal Display, not error code Forced cooling EC 51 ODU EEPROM parameter error TS01-ODU EL 01 IDU & ODU communication error TS02-S-INV PC 40 Communication error between outdoor main chip and compressor driven chip TS31 PC 08 ODU overcurrent protection...

  • Page 78: Outdoor Unit Point Check Function

    Troubleshooting 3. Outdoor Unit Point Check Function • A check switch is included on the auxiliary board . • Push SW1 to check the unit’s status while running . The digital display shows the following codes each time the SW1 is pushed .

  • Page 79: Complain Record Form

    Troubleshooting 4. Complain Record Form Complain Record Form Request No . : Date: Installation Date: Service Date: Customer Information Name: Telephone No . : Home Address: Email: Product Information Indoor Unit Model: Outdoor Unit Model: Serial No . of Indoor Unit Serial No .
  • Page 80 Troubleshooting Parameter Checking information by Remote controller Displaying code Displaying code meaning Display value Display value meaning Room temperature Indoor coil temperature Outdoor coil temperature Ambient temperature Discharge temperature Targeted Frequency Actual Frequency Compressor current Outdoor AC voltage Indoor capacity test Reserve Outdoor fan speed EXV opening steps...

  • Page 81: Information Inquiry

    Troubleshooting 5. Information Inquiry & Setting • To enter engineer mode, in power-on or standby mode, and in non-locked state, press the key combination “ON/OFF + Air Speed” for 7 seconds: • After entering the engineer mode, the remote control will display icons of “Auto, Cool, Dry, Heat”, and the Battery icon; at the same time, it will also display the numeric code of the current engineer mode (for the initial engineer mode, the numeric code displayed is 0), and all other icons are inactive .
  • Page 82 Troubleshooting Code Query Content Advanced Function Setting Press “On/Off” for 2 seconds to enter the Max . Set Temperature Selector, press the Up/Down key to select “25°C~30°C”, press “OK” to confirm, and the Max . Set Temperature can be memorized when the remote control is TP temperature powered on and power lost;...
  • Page 83 Troubleshooting Code Query Content Advanced Function Setting Press “On/Off” for 2 seconds to enter Model Selection the code displayed is WIFI signal “Ch”, then press “OK” to send the Model Selection code, press the Up/Down strength key to select,such as 23, 26, 32, 35, 51, 72, 120 etc; and press “On/Off” for 2 seconds to exit .
  • Page 84 Troubleshooting • In Channel 1~30 settings of the engineer mode, long press the “On/Off” key to return the previous engineer mode . • When the setting is successful, “CS” will be displayed; When the setting fails, “CF” will be displayed . Exit of engineer mode: 1) In engineer mode, press the key combination of “On/Off + Air speed”...
  • Page 85 Troubleshooting Display Error Information pc 00 ODU IPM module protection pc 10 ODU low AC voltage protection pc 11 ODU main control board DC bus high voltage protection pc 12 ODU main control board DC bus low voltage protection/341 MCE error pc 02 Compressor top (or IPM) temp .

  • Page 86: Error Diagnosis And Troubleshooting Without Error Code

    Troubleshooting 6. Error Diagnosis and Troubleshooting Without Error Code WARNING Be sure to turn off unit before any maintenance to prevent damage or injury . 6.1 Remote maintenance SUGGESTION: When troubles occur, please check the following points with customers before field maintenance . Problem Solution Unit will not start...

  • Page 87: Field Maintenance

    Troubleshooting 6.2 Field maintenance Problem Solution Unit will not start TS19 - TS20 Compressor will not start but fans run TS19 - TS20 Compressor and condenser (outdoor) fan will not start TS19 - TS20 Evaporator (indoor) fan will not start TS19 - TS20 Condenser (Outdoor) fan will not start TS19 - TS20...
  • Page 88 Troubleshooting 1. Remote Maintenance Electrical Circuit Refrigerant Circuit Possible causes of trouble Unit will not start     The power switch is on but fans will not start    The temperature on the display board cannot be set ...
  • Page 89 Troubleshooting 1. Remote Maintenance Other Possible causes of trouble Unit will not start The power switch is on but fans will not start  The temperature on the display board cannot be set Unit is on but the blowing air is not cold (hot) Unit runs, but shortly stops The unit starts up and stop frequently ...
  • Page 90 Troubleshooting 2. Field Maintenance Refrigerant Circuit Other Possible causes of trouble Unit will not start Compressor will not start but fans run  Compressor and condenser (outdoor) fan will not start Evaporator (indoor) fan will not start Condenser (outdoor) fan will not start Unit runs, but shortly stops ...
  • Page 91 Troubleshooting 2. Field Maintenance Electrical Circuit Possible causes of trouble Unit will not start       Compressor will not start but fans run      Compressor and condenser (outdoor) fan will not start ...

  • Page 92: Quick Maintenance By Error Code

    Troubleshooting 7. Quick Maintenance by Error Code If you do not have the time to test which specific parts are faulty, you can directly change the required parts according the error code . You can find the parts to replace by error code in the following table . Error Code Part requiring EH 00/...
  • Page 93 Troubleshooting Part requiring pc 06 pc 08/44/49 pc 0a pc 0f PC 40 replacement Outdoor PCB √ √ √ √ √ Outdoor fan motor √ √ T3 Sensor √ TP Sensor √ Pressure sensor Reactor √ √ Compressor IPM module board √...

  • Page 94: Troubleshooting By Error Code

    Troubleshooting 8. Troubleshooting by Error Code TS01-IDU: IDU EEPROM malfunction or indoor EEPROM parameter error diagnosis and solution Description: Indoor PCB main chip does not receive feedback from EEPROM chip . Recommended parts to prepare: • Indoor PCB Troubleshooting and repair: Shut off the power supply and turn it on 2 minutes later .
  • Page 95 Troubleshooting TS01-ODU: ODU EEPROM parameter error diagnosis and solution Description: Outdoor PCB main chip does not receive feedback from EEPROM chip . Recommended parts to prepare: • Outdoor PCB Troubleshooting and repair: Shut off the power supply and turn it on 2 minutes later . Is it still The unit is displaying the...
  • Page 96 Troubleshooting TS02-S-INV: IDU & ODU communication error diagnosis and solution Description: Indoor unit can not communicate with outdoor unit . Recommended parts to prepare: • Indoor PCB • Outdoor PCB • Short-circuited component Troubleshooting and repair: Power off, then restart the unit after 2 minutes Does the Solved...
  • Page 97 Troubleshooting Remarks • Use a multimeter to test the DC voltage between 2 port (or S or L2 port) and 3 port (or N or S port) of outdoor unit . The red pin of multimeter connects with 2 port (or S or L2 port) while the black pin is for 3 port (or N or S port) . •...
  • Page 98 Troubleshooting TS03: Zero crossing detection error diagnosis and solution Description: When PCB does not receive zero crossing signal feedback for 4 minutes or the zero crossing signal time interval is abnormal . Recommended parts to prepare: • Connection wires • Indoor main PCB Troubleshooting and repair: Check the connections and power supply...
  • Page 99 Troubleshooting TS04-S-IDU: The Indoor fan speed is operating outside of normal range diagnosis and solution) Description: When indoor fan speed keeps too low or too high for a certain time, the LED displays the failure code and the AC turns off . Recommended parts to prepare: •...
  • Page 100 Troubleshooting Index: 1. Indoor or Outdoor DC Fan Motor(control chip is in fan motor) Power on and when the unit is in standby, measure the voltage of pin1-pin3, pin4-pin3 in fan motor connector . If the value of the voltage is not in the range showing in below table, the PCB must has problems and need to be replaced . •...
  • Page 101 Troubleshooting TS04-ODU: The outdoor fan speed is operating outside of normal range diagnosis and solution) Description: When outdoor fan speed keeps too low or too high for a certain time, the LED displays the failure code and the AC turns off . Recommended parts to prepare: •...
  • Page 102 Troubleshooting Index: 1. Outdoor DC Fan Motor (control chip is in outdoor PCB) Release the UVW connector . Measure the resistance of U-V, U-W, V-W . If the resistance is not equal to each other, the fan motor must has problems and need to be replaced . Otherwise the PCB must has problems and need to be replaced .
  • Page 103 Troubleshooting TS05-IDU: Open circuit or short circuit of indoor temperature sensor (T1, T2) diagnosis and solution Description: If the sampling voltage is lower than 0 .06V or higher than 4 .94V, the LED displays the failure code . Recommended parts to prepare: •...
  • Page 104 Troubleshooting TS05-ODU: Open circuit or short circuit of outdoor temperature sensor (T3, T4, TP, T2B,TH) diagnosis and solution Description: If the sampling voltage is lower than 0 .06V or higher than 4 .94V, the LED displays the failure code . Recommended parts to prepare: •...
  • Page 105 Troubleshooting TS06-INV: System lacks refrigerant diagnosis and solution Description: Judging the abnormality of the refrigeration system according to the number of compressor stops and the changes in operating parameters caused by excessive exhaust temperature . Recommended parts to prepare: • Indoor PCB •...
  • Page 106 Troubleshooting TS07: Indoor PCB / Display board communication error diagnosis and solution Description: Indoor PCB does not receive feedback from the display board . Recommended parts to prepare: • Communication wire • Indoor PCB • Display board Troubleshooting and repair: Power off, then restart the unit 2 minutes later Is it still displaying...
  • Page 107 Troubleshooting TS08-S: Current overload protection diagnosis and solution Description: An abnormal current rise is detected by checking the specified current detection circuit . Recommended parts to prepare: • Connection wires • Reactor • Outdoor fan • Outdoor PCB Troubleshooting and repair: Was the protection activated in standby? Restart the unit when the power...
  • Page 108 Troubleshooting TS05-N10: Refrigerant sensor error or Refrigerant sensor is out of range diagnosis and solution Description: Indoor unit receives fault signal for 10 seconds or indoor unit does not receive feedback from refrigerant sensor for 150 seconds . Recommended parts to prepare: •...
  • Page 109 Troubleshooting TS06-N10: Refrigerant sensor detects leakage or Refrigerant sensor is out of range and leakage is detected diagnosis and solution Description: The refrigerant sensor detects a concentration higher than or equal to 10%*LFL for 10 seconds or the refrigerant sensor detects a concentration higher than or equal to 20%*LFL or the multi model receives the refrigerant leakage protection fault sent by the outdoor unit .
  • Page 110 Troubleshooting TS09-S: ODU IPM module protection diagnosis and solution Description: When the voltage signal the IPM sends to the compressor drive chip is abnormal, the LED displays the failure code and the AC turns off . Recommended parts to prepare: •...
  • Page 111 Troubleshooting TS10-S: ODU voltage protection diagnosis and solution Description: Abnormal increases or decreases in voltage are detected by checking the specified voltage detection circuit . Recommended parts to prepare: • Power supply wires • IPM module board • PCB • Reactor Troubleshooting and repair: Check the power supply .
  • Page 112 Troubleshooting TS11-S-INV: Compressor top (or IPM) temp. protection diagnosis and solution Description: If the temperature of IPM module is higher than a certain value, the LED displays the failure code . Recommended parts to prepare: • Connection wires • Outdoor PCB •...
  • Page 113 Troubleshooting TS12-S: Inverter compressor drive error diagnosis and solution Description: An abnormal inverter compressor drive is detected by a special detection circuit, including communication signal detection, voltage detection, compressor rotation speed signal detection and so on . Recommended parts to prepare: •...
  • Page 114 Troubleshooting TS26-INV: System Pressure protection(low or high pressure) diagnosis and solution Description: Outdoor pressure switch cut off the system because high pressure is higher than 4 .4 MPa or outdoor pressure switch cut off the system because low pressure is lower than 0 .13 MPa, the LED displays the failure code . Recommended parts to prepare: •...
  • Page 115 Troubleshooting High pressure protection Connect high pressure switch Are the high pressure switch and main and main control board control boar wired correctly? Is the high pressure protector broken? Method: Disconnect the plug . Measure the resistance of the Replace high pressure protector high pressure protector, if the protector is normal the value is "o"...
  • Page 116 Troubleshooting Low pressure protection Are the low pressure Reconnect the low pressure protector protector and main control and main control board board wired properly? Is the low pressure protector broken? Method: Disconnect the plug . Measure the resistance of the low pressure protector .
  • Page 117 Troubleshooting TS14: IDUs mode conflict (match with multi outdoor unit) Description: The indoor units cannot work cooling mode and heating at same time . Heating mode has a priority . • Suppose Indoor unit A working in cooling mode or fan mode, and indoor unit B is set to heating mode, then A will change to off and B will work in heating mode .
  • Page 118 Troubleshooting TS27-INV: High temperature protection of condenser diagnosis and solution Description: When the outdoor pipe temperature is more than 65°C, the unit stops . It starts again only when the outdoor pipe temperature is less than 52°C . Recommended parts to prepare: •...
  • Page 119 Troubleshooting TS30: PFC module protection diagnosis and solution Description: When the voltage signal that IPM send to compressor drive chip is abnormal, the LED displays the failure code and the AC turns off . Recommended parts to prepare: • Connection wires •...
  • Page 120 Troubleshooting TS31: Communication error between outdoor main chip and compressor driven chip diagnosis and solution Description: The main PCB cannot detect the IPM board . Recommended parts to prepare: • Connection wires • IPM board • Outdoor main PCB • Electric control box Troubleshooting and repair: Is there at least one LED in the compressor driven chip light?
  • Page 121 Troubleshooting TS32: Discharge temperature protection of compressor diagnosis and solution Description: If the compressor discharge temperature exceeds a certain level for nine seconds, the compressor ceases operation, the LED displays the failure code . Recommended parts to prepare: • Connection wires •...
  • Page 122 Troubleshooting TS38: Lack phase failure of ODU DC fan motor diagnosis and solution Description: When the three-phase sampling current of the DC motor is abnormal, especially when the current of one or more phases is always small and almost 0, the LED displays the failure code . Recommended parts to prepare: •...
  • Page 123 Troubleshooting TS39: ODU compressor lack phase protection diagnosis and solution Description: When the three-phase sampling current of the compressor is abnormal, especially when the current of one or more phases is always small and almost 0, the LED displays the failure code Recommended parts to prepare: •...
  • Page 124 Troubleshooting TS40: ODU IR chip drive failure diagnosis and solution Description: When the IR chip detects its own parameter error, the LED displays the failure code when power on . Recommended parts to prepare: • Inverter module PCB . Troubleshooting and repair: Power off,then restart the unit 2 minutes later .

  • Page 125: Check Procedures

    Troubleshooting 9. Check Procedures 9.1 Temperature Sensor Check WARNING Be sure to turn off all power supplies or disconnect all wires to avoid electric shock . Operate after compressor and coil have returned to normal temperature in case of injury . 1 .
  • Page 126 Troubleshooting KTF235D22UMT Resistance KSM135D23UFZ KTN110D42UFZ KSN140D21UFZ KTM140D78UFZ3 ATF235D22TMT KTM240D46UKT2 Value KTF250D22UMT Blue-Red Blue-Black 1 . 7 2Ω 1 . 8 2Ω 1 . 2 8Ω 1 . 5 Ω 0 . 7 5Ω 1 . 0 4Ω Red-Black Resistance KSN140D58UFZ KTM240D43UKT KSN98D64UFZ3 ASN140D35TFZ...
  • Page 127 Troubleshooting 9.3 IPM Continuity Check WARNING Electricity remains in capacitors even when the power supply is off . Ensure the capacitors are fully discharged before troubleshooting . 1 . Turn off outdoor unit and disconnect power supply . 2 . Discharge electrolytic capacitors and ensure all energy-storage unit has been discharged . 3 .
  • Page 128 Troubleshooting Note: The picture and the value are only for reference, actual condition and specific value may vary . 9.4 4-way Valve Check Power on, use a digital tester to measure the voltage, when the unit operates in cooling, it is 0V . When the unit operates in heating, it is about 230VAC .
  • Page 129 Troubleshooting Turn off the power, use a digital tester to measure the resistance . The value should be 1 .8~2 .5 KΩ .
  • Page 130 Troubleshooting 9.5 EXV Check WARNING Electricity remains in capacitors even when the power supply is off . Ensure the capacitors are fully discharged before troubleshooting . 1 . Disconnect the connector from outdoor PCB . 2 . Measure the resistance value of each winding using a multi-meter . 3 .

  • Page 131: Appendix

    Appendix Contents i) Temperature Sensor Resistance Value Table for TP (°C --K) . . . . . . . . . . . . . . . . . . . . . . . . . . 130 ii) Other Temperature Sensors Resistance Value Table (°C –...

  • Page 132: I) Temperature Sensor Resistance Value Table For T1, T2, T3 And T4 (°C - K)

    Appendix i) Temperature Sensor Resistance Value Table for TP (°C -- K) °C °F K Ohm °C °F K Ohm °C °F K Ohm °C °F K Ohm 542 . 7 68 . 6 6 13 . 5 9 3 . 7 02 511 .

  • Page 133: Ii) Temperature Sensor Resistance Value Table For Tp (For Some Units) (°C - K)

    Appendix ii) Other Temperature Sensors Resistance Value Table (°C – K) °C °F K Ohm °C °F K Ohm °C °F K Ohm °C °F K Ohm 115 . 2 66 12 . 6 431 2 . 3 5774 0 . 6 2973 108 .

  • Page 134: Iii) Pressure On Service Port

    Appendix iii) System Pressure Table-R454B Pressure Temperature Pressure Temperature °C °F °C °F 58 . 1 96 0 . 5 8 8 . 4 4 935 . 2 3 9 . 3 5 135 . 6 4 46 . 4 61 .
  • Page 135 Appendix Pressure Temperature Pressure Temperature °C °F °C °F 422 . 3 1 4 . 2 2 61 . 2 5 3 . 2 2956 . 5 29 . 5 7 428 . 7 9 125 . 6 437 . 9 2 4 .
  • Page 136 1-888-346-7539 | www.dimplex.com In keeping with our policy of continuous product improvement, we reserve the right to make changes without notice. © 2025 Glen Dimplex Americas...

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