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SERVICE MANUAL

PET12C1PR1

AIR CONDITIONER

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Summary of Contents for PET12C1PR1

Page 1: ...SERVICE MANUAL PET12C1PR1 AIR CONDITIONER ...

Page 2: ...3 Protection function 11 6 4 Fan only mode function requirement 11 6 5 Cooling mode function requirement 11 6 6 Drying mode 12 6 7 Heating mode 13 6 8 Sensor malfunction 13 6 9 Some standard functions synopsis 14 7 Installation details 15 7 1 Installation instructions 15 7 2 Care and maintenance 23 8 Basic test procedure 25 8 1 Defective compressor 25 8 2 Sealed refrigeration system repairs 27 8 3...

Page 3: ...fire or electric shock Install the panel and the cover of control box securely There is risk of fire of electric shock Always install a dedicated circuit and breaker Improper wiring or installation may cause fore or electric shock Use the correctly rated breaker of fuse There is risk of fire or electric shock Do not modify or extend the power cable There is risk of fire or electric shock Do not in...

Page 4: ...ce near the power cable There is risk of fire and electric shock Do not allow water to run into electric parts It may cause fire failure of the product or electric shock Do not store or use flammable gas or combustible near the product There is risk of fire or failure of product Do not use the product in a tightly closed space for a long time Oxygen deficiency could occur When flammable gas leaks ...

Page 5: ...igerant levels may cause failure of product Install the drain hose to ensure that water is drained away properly A bad connection may cause water leakage Keep level even when installing the product To avoid vibration of water leakage Do not install the product where the noise or hot air from the outdoor unit could damage the neighborhoods It may cause a problem for your neighbors Use two or more p...

Page 6: ...ts that could cause personal injury Do not drink the water drained from the product It is not sanitary could cause serious health issues Use a firm stool or ladder when cleaning or maintaining the product Be careful and avoid personal injury Replace the all batteries in the remote control with new ones of the same type Do not mix old and new batteries or different types of batteries There is risk ...

Page 7: ...tion Anti freezing control in cooling or drying mode Prevent the water being freezed on evaporator by sensing the evaporator pipe temperature in cooling or drying mode 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: ...Swing button Use this button to initiate cancel the auto swing feature 3 Up and Down button Used to adjust increasing decreasing temperature settings 1 C 1 F increments in a range of 17 62 to 30 86 or the TIMER setting in a range of 0 24hrs 4 ION button optional Press the ION button the ion generator is energized and will help to remove pollen and impurities from the air and trap them in the filte...

Page 9: ...Y and FAN modes it shows the room temperature Error codes E1 Room temperature sensor error Unplug the unit and plug it back in If error repeats call for service E2 Evaporator temperature sensor error Unplug the unit and plug it back in If error repeats call for service E4 Display panel communication error Unplug the unit and plug it back in If error repeats call for service P1 Bottom tray is full ...

Page 10: ...8 3 Dimension Dimension Mode W mm H mm D mm 9K 10K 11K 12K 443 840 355 ...

Page 11: ...ion 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 LIQUID SIDE GAS SIDE EVAPORATOR CONDENSER COMPRESSOR CAPILIARY TUBE ...

Page 12: ...03 P04 P05 P06 P07 P08 ION Y G 3 4 RY2 3 4 RY1 HEATER Red Black P4 Black Red Optional Black or brown White or blue POWER Green or Y G M P1 Red Black MOTOR Y G M Y G Red COMPRESSOR Black Blue CAP CN1 CN2 Yellow TRANSFORMER Red SU EL SW2 CN5 CN4 SW1 Optional M CN9 SWING CN3 Ambient sensor Avaporator sensor CN6 P3 P2 CN10 MAIN BOARD Blue 202025190073 ...

Page 13: ...ction with a delay of three minutes 6 3 2 Sensor protection at open or short circuit 6 3 3 Evaporator anti icing protection at cooling mode 6 4 Fan only mode function requirement 6 4 1 The compressor and outdoor fan are OFF at Fan only mode except P1 protection 6 4 2 The speed of indoor fan can be optionally chosen as High Mid Low 6 4 3 The ION TIMER functions are valid at the fan only mode 6 5 Co...

Page 14: ... at the cooling mode 6 6 Drying mode 6 6 1 When the unit starts to operate at drying mode the compressor will start while the room temperature is over 13 After the compressor started the compressor will operate as below TA 15 13 Compressor on Operation conditon Compressor off 6 6 1 1 When TA 13 the compressor stops And the outdoor fan will stop after delaying for 5 seconds when it operates for 3 m...

Page 15: ... 2 1 When TA TS the indoor fan operates firstly and then the heater operates after 4 seconds 6 7 2 2 If TA TS 1 the heater stops Then the heater turns to be off after 10 seconds When the unit is off at the heating mode the indoor fan motor stops delaying for 10 seconds 6 7 3 The ION TIMER functions are valid at the heating mode 6 8 Sensor malfunction Malfunction display When the malfunction happen...

Page 16: ...will register in 5 second and the system will automatically revert back to display the previous temperature setting Turning the unit ON or OFF at any time or adjusting the timer setting to 0 0 will cancel the Auto Start Stop timed program When the malfunction E1 or E2 occurs the Auto Start Stop timed program will also be cancelled 6 9 2 Sleep function Press this button the selected temperature wil...

Page 17: ...ugh to support the unit The unit has casters to aid placement but it should only be rolled on smooth flat surfaces Use caution when rolling on carpet surfaces Do not attempt to roll the unit over objects The unit must be placed within reach of a properly rated grounded socket Never place any obstacles around the air inlet or outlet of the unit Allow at least 30cm of space from the wall for efficie...

Page 18: ...w 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 Window slider kit can be fixed with a bolt see Fig 3a Window slider kit Installation ...

Page 19: ...t the foam seal adhesive type to the proper length and attach it to the window stool Fig 4 2 Attach the window slider kit to the window stool Adjust the length of the window slider kit according to the width of window Short the adjustable window kit if the width of window is less than 27 inches Open the window sash and place the window slider kit on the window stool Fig 5 Installation in a double ...

Page 20: ... 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 Show as in Fig 7 ...

Page 21: ...h of the window slider kit according to the width of window Short the adjustable window kit if the width of window is less than 27 inches Open the window sash and place the window slider kit on the window stool See Fig 9 3 Cut the foam seal adhesive type to the proper length and attach it on the top of the window Show as in Fig 10 Installation in a sliding sash window ...

Page 22: ...h and outer window sash Show as in Fig 11 The exhaust hose and adaptor must be installed or removed in accordance with the usage mode 1 Install the window Exhaust adaptor B onto the exhaust hose as shown in Fig 12 or Fig 13 Refer to the previous pages for window kit installation Cool mode Install Fan or dehumidify mode Remove Exhaust hose installation ...

Page 23: ...into the wall Not applicable to the units without adaptor A expansion plugs and wooden screws of Accessories 1 Prepare a hole in the wall Install the wall Exhaust adaptor A onto the wall outside by using 4 expansion plugs and wooden screws be sure to fix thoroughly See Fig 15 2 Attach the Exhaust hose to wall Exhaust adaptor A ...

Page 24: ...IMPORTANT DO NOT OVER BEND THE DUCT SEE Fig 16 During dehumidifying modes remove the drain plug from the back of the unit install the drain connector 5 8 universal female mender with 3 4 hose locally purchased For the models without drain connector just attach the drain hose to the hole Place the open end of the hose directly over the drain area in your basement floor Please refer to Fig 17 18 Wat...

Page 25: ...vice 7 2 Care and maintenance Important 1 Be sure to unplug the unit before cleaning or servicing 2 Do not use gasoline thinner or other chemicals to clean the unit 3 Do not wash the unit directly under a tap or using a hose It may cause electrical danger 4 If the power cord is damaged it should be repaired by manufacture or its agency 1 Air filter Clean the air filter at least once every two week...

Page 26: ...ong time Remove the rubber plug at the back of the unit and attach a hose to drain outlet Place the open end of the hose directly over the drain area in your basement floor See Fig 17 18 Remove the plug from the bottom drain outlet all the water in the bottom tray would drain out See Fig 19 Keep the appliance running on FAN mode for half a day in a warm room to dry the appliance inside and prevent...

Page 27: ...ontinuity across the following Terminal C and S no continuity Open winding replace compressor Terminal C and R no continuity Open winding replace compressor Terminal R and S no continuity Open winding replace compressor 8 1 2 Ground test Use an ohmmeter to set on its highest scale Touch one lead to the compressor body clean point of contact as a good connection is a must and the other probe in tur...

Page 28: ...e compressor body The overload is wired in series with the common motor terminal The overload senses both major amperage and compressor temperature High motor temperature or amperage heats the disc causing it to open and break the circuit to the common motor terminal Heat generated within the compressor shell is usually due to 1 High amperage 2 Low refrigerant charge 3 Frequent recycling 4 Dirty c...

Page 29: ... 1 Voltmeter 2 Ammeter 3 Ohmmeter 4 E P A Approved Refrigerant Recovery System 5 Vacuum Pump capable of 200 microns or less vacuum 6 Acetylene Welder 7 Electronic Halogen Leak Detector G E Type H 6 or equivalent 8 Accurate refrigerant charge measuring device such as a Balance Scales 1 2 oz accuracy b Charging Board 1 2 oz accuracy 9 High Pressure Gauge 0 400 lbs 10 Low Pressure Gauge 30 150 lbs 11...

Page 30: ...with dry nitrogen 7 Leak test complete system with electric halogen leak detector correcting any leaks found 8 Reduce the system to zero gauge pressure 9 Connect vacuum pump to high side and low side of system with deep vacuum hoses or copper tubing Do not use regular hoses 10 Evacuate system to maximum absolute holding pressure of 200 microns or less NOTE This process can be speeded up by use of ...

Page 31: ...terminal markings are on the cover gasket Use your wiring diagram to insure correct connections 8 2 6 Refrigerant charge 1 The refrigerant charge is extremely critical It must be measured charge carefully as exact as possible to the nameplate charge 2 The correct method for charging the rotary is to introduce liquid refrigerant into the high side of the system with the unit off Then start compress...

Page 32: ...d fan motor A single capacitor can be used for each motor or a dual rated capacitor can be used for both The capacitor s primary function is to reduce the line current while greatly improving the torque characteristics of a motor The capacitor also reduces the line current to the motor by improving the power factor of the load Run capacitor hook up line side of the capacitor is marked with a red d...

Page 33: ...756 17 14 6181 44 4 3874 9 58 7079 18 13 918 45 4 2126 8 56 3694 19 13 2631 46 4 0459 7 52 2438 20 12 6431 47 3 8867 6 49 3161 21 12 0561 48 3 7348 5 46 5725 22 11 5 49 3 5896 4 44 23 10 9731 50 3 451 3 41 5878 24 10 4736 51 3 3185 2 39 8239 25 10 52 3 1918 1 37 1988 26 9 5507 53 3 0707 0 35 2024 27 9 1245 54 2 959 1 33 3269 28 8 7198 55 2 8442 2 31 5635 29 8 3357 56 2 7382 3 29 9058 30 7 9708 57 ...

Page 34: ...m are not closed Make sure all the windows and doors are closed There are heat sources inside the room Remove the heat sources if possible Exhaust air duct is not connected or blocked Connect the duct and make sure it can function properly Temperature setting is too high Decrease the set temperature 2 Not cool enough Air filter is blocked by dust Clean the air filter 3 Noisy or vibration The groun...

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