innovair PET12C1PR1 Service Manual
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innovair PET12C1PR1 Service Manual

Air conditioner
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SERVICE MANUAL

PET12C1PR1
AIR CONDITIONER

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Summary of Contents for innovair PET12C1PR1

  • Page 1: Service Manual

    SERVICE MANUAL PET12C1PR1 AIR CONDITIONER...

  • Page 2: Table Of Contents

    CONTENTS 1. Precaution............................. 1 1.1 Safety Precaution..........................1 1.2 Warning............................1 2. Function and control panel ......................... 4 2.1 Function .............................. 4 2.2 Control panel ............................5 3. Dimension ............................. 8 4 Refrigerant Cycle Diagram........................9 5 Wiring Diagram............................ 10 6 Electronic function..........................11 6.1 Terms and definitions ........................11 6.2 Electric Control working environment....................11...

  • Page 3: Precaution

    1. Precaution 1.1 Safety Precaution To prevent injury to the user or other people and property damage, the following instructions must be followed. Incorrect operation due to ignoring instruction will cause harm or damage. Before service unit, be sure to read this service manual at first. 1.2 Warning Installation Do not use a defective or underrated circuit breaker.
  • Page 4 It may cause injury, accident, or damage to the product. Be sure the installation area does not deteriorate with age. If the base collapses, the air conditioner could fall with it, causing property damage, product failure, and personal injury. Do not let the air conditioner run for a long time when the humidity is very high and a door or a window is left open.
  • Page 5 There is risk of physical injury, electric shock, or product failure. When the product is soaked (flooded or submerged), contact an Authorized service center. There is risk of fire or electric shock. Be caution that water could not enter the product. There is risk of fire, electric shock, or product damage.

  • Page 6: Function And Control Panel

    There is risk of damage or loss of property. Do not block the inlet or outlet of air flow. It may cause product failure. Use a soft cloth to clean. Do not use harsh detergents, solvents, etc. There is risk of fire, electric shock, or damage to the plastic parts of the product. Do not touch the metal parts of the product when removing the air filter.

  • Page 7: Control Panel

    Auto-restart. When the power supply is interrupted and then restore, the air conditioners automatically restore the previous function setting. Time Delay Safety. Restarting is for approx. 3 minutes. 2.2 Control panel PET12C1PR1...
  • Page 8 (1) Mode select button Selects the appropriate operating mode. Each time you press the button, a mode is selected in a sequence that goes from AUTO, COOL, DRY, FANandHEAT(cooling only models without) .The mode indicator light illuminates under the different mode setting. (2) Swing button Use this button to initiate/cancel the auto swing feature (3) Up(...
  • Page 9 (7) Speed button Press to select the fan speed in four steps- AUTO/LOW/MED (on some models) and HIGH. The fan speed indicator light illuminates under different fan settings except AUTO speed. When select AUTO fan speed, all the fan indicator lights turn dark. (8) Sleep button Used to initiate the SLEEP operation (9) LED Display...

  • Page 10: Dimension

    3. Dimension Dimension Mode W(mm) H(mm) D(mm) 9K/10K/11K/12K...

  • Page 11: Refrigerant Cycle Diagram

    4 Refrigerant Cycle Diagram The figure below is a brief description of the important components and their function in what is called the refrigeration system. This will help to understand the refrigeration cycle and the flow of the refrigerant in the cooling cycle. CAPILIARY TUBE LIQUID SIDE CONDENSER...

  • Page 12: Wiring Diagram

    5 Wiring Diagram PET12C1PR1 202025190073 Display board Ambient sensor Avaporator sensor SWING Down Fan Black Yellow (White) Brown Blue Optional Down Up Fan Black CN10 MOTOR Brown Blue P01 P02 Black P03 P04 Black P05 P06 P07 P08 Yellow Black...

  • Page 13: Electronic Function

    6 Electronic function 6.1 Terms and definitions TC: Temperature of evaporator (T2). TA: Temperature of indoor ambient (T1). TS: The set temperature. TE: Temperature of condenser (T3) 6.2 Electric Control working environment Input voltage: 187~264V for 50Hz models and 97~127V for 60Hz models; 6.3 Protection function 6.3.1 The compressor functions protection with a delay of three minutes.

  • Page 14: Drying Mode

    Operation conditon Compressor on (TA-Ts) ¥ Compressor off 6.5.2.1 If TA TS+1 , the outdoor fan operates. After 15 seconds, the compressor operates. ¦ ¡ 6.5.2.2 If TA TS after the compressor operates, this compressor will stop. If the outdoor fan operates §...

  • Page 15: Heating Mode

    6.7 Heating mode 6.7.1. The speed of indoor fan can be optionally chosen as High/Mid/Low. The compressor and outdoor fan keep on stop (except P1 protection) 6.7.2. Electric heater operates as below. Operation conditon (TA-Ts) Heater off Heater on 6.7.2.1. When TA TS, the indoor fan operates firstly, and then the heater operates after 4 seconds.

  • Page 16: Some Standard Functions Synopsis

    6.9 Some standard functions synopsis 6.9.1. Timer function When the unit is on, firstly press the Timer button, the TIMER OFF indicator light illuminates. It indicates the Auto Stop program is initiated. When the unit is off, firstly press the Timer button, the TIMER ON indicator light illuminates. It indicates the Auto Start program is initiated.

  • Page 17: Installation Details

    7 Installation details 7.1 Installation instructions Location The air conditioner should be placed on a firm foundation to minimize noise and vibration. For safe and secure positioning, place the unit on a smooth, level floor strong enough to support the unit. The unit has casters to aid placement, but it should only be rolled on smooth, flat surfaces.
  • Page 18 Window slider kit Installation Your window slider kit has been designed to fit most standard "Vertical" and "horizontal" window applications. However, it may be necessary for you to improvise/modify some aspects of the installation procedures for certain types of window. Please refer to Fig. 2 & Fig.3 for minimum and maximum window openings.
  • Page 19 Note: If the window opening is less than the mentioned minimum length of the window slider kit, cut that one with a hole in it short to fit for the window opening. Do never cut out the hole in window slider kit. Installation in a double-hung sash window 1.
  • Page 20 3. Cut the foam seal (adhesive type) to the proper length and attach it on the top of the window. Show as in Fig.6 4. Close the window sash securely against the window. 5. Cut the foam seal to an appropriate length and sealing the open gap between the top window sash and outer window sash.
  • Page 21 Installation in a sliding sash window 1. Cut the foam seal (adhesive type) to the proper length and attach it to the window frame. See Fig.8. 2. Attach the window slider kit to the window stool. Adjust the length of the window slider kit according to the width of window.
  • Page 22 4. Close the sliding sash securely against the window. 5. Cut the foam seal to an appropriate length and sealing the open gap between the top window sash and outer window sash. Show as in Fig.11. Exhaust hose installation The exhaust hose and adaptor must be installed or removed in accordance with the usage mode. Cool mode Install Fan or dehumidify mode...
  • Page 23 2. Push the Exhaust hose into the air outlet opening along the arrow direction (See Fig.14) The exhaust hose can be installed into the wall (Not applicable to the units without adaptor A, expansion plugs and wooden screws of Accessories). 1.
  • Page 24 Note: Cover the hole using the adaptor cap when not in use. The duct can be compressed or extended moderately according to the installation requirement, but it is desirable to keep the duct length to a minimum. IMPORTANT: DO NOT OVER BEND THE DUCT (SEE Fig.16) Water drainage During dehumidifying modes, remove the drain plug from the back of the unit, install the drain connector(5/8...

  • Page 25: Care And Maintenance

    When the water level of the bottom tray reaches a predetermined level, the unit beeps 8 times, the digital display area shows "P1". At this time the air conditioning/dehumidification process will immediately stop. However, the fan motor will continue to operate (this is normal). Carefully move the unit to a drain location, remove the bottom drain plug and let the water drain away (Fig.19).
  • Page 26 Cleaning Wash the air filter by immersing it gently in warm water (about 40 /104 ) with a neutral detergent. ¡ ¤ Rinse the filter and dry it in a shady place. Mounting Install the upper air filter after cleaning and install the lower filter by using the screw. NOTE: The grill and the air filer are connected and can’t be separated.

  • Page 27: Basic Test Procedure

    8 Basic test procedure 8.1 Defective compressor Compressors are single phase, depending on the model unit. All compressor motors are permanent split capacitor type using only a running capacitor across the start and run terminal. All compressors are internally spring mounted and externally mounted on rubber isolators. 8.1.1 Compressor wiring test Remove compressor terminal box cover and disconnect wires from terminals.
  • Page 28 discharge valves, reducing the ability of the compressor to pump refrigerant gas. This condition can be checked as follows: 1. Install a piercing valve on the suction and discharge or liquid process tube. 2. Attach gauges to the high and low sides of the system. 3.

  • Page 29: Sealed Refrigeration System Repairs

    connected in series with the common motor terminal. Should the internal temperature and/or current draw become excessive; the contacts in the overload will open, turning off the compressor? The overload will automatically reset, but may require several hours before the heat is dissipated. 8.1.7 Checking the internal overload 1.
  • Page 30 8.2.3 Hermetic compressor replacement. The following procedure applies when replacing components in the sealed refrigeration circuit or repairing refrigerant leaks. (Include Compressor, condenser, evaporator, capillary tube, refrigerant leaks, etc.) 1. Recover the refrigerant from the system at the process tube located on the high side of the system by installing a line tap on the process tube.

  • Page 31: Fan Motor

    2. Remove compressor, capillary tube and filter drier from the system. 3. Flush evaporator condenser and all connecting tubing with dry nitrogen or equivalent, to remove all contamination from system. Inspect suction and discharge line for carbon deposits. Remove and clean if necessary. 4.

  • Page 32: Capacitor

    2. Disconnect fan motor wires from fan speed switch or system switch. 3. Apply "live" test cord probes on black wire and common terminal of capacitor. Motor should run at high speed. 4. Apply "live" test cord probes on red wire and common terminal of capacitor. Motor should run at low speed.

  • Page 33: Characteristic Of Temperature Sensor

    4. Reverse the leads of the probe and momentarily touch the capacitor terminals. The deflection of the pointer should be two times that of the first check if the capacitor is good. 5. Repeat steps 3 and 4 to check fan motor capacitor. NOTE: A shorted capacitor will indicate a low resistance and the pointer will move to the "0"...

  • Page 34: Troubleshooting

    10 Troubleshooting In general, possible trouble is classified in three kinds. One is called Starting Failure which is caused from an electrical defect, another is ineffective Air Conditioning caused by a defect in the refrigeration circuit and improper application, and the other is called the Structure Damage. TROUBLES POSSIBLE CAUSES SUGGEST REMEDIES...

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