Fisher FSAIF-BL-91FE3 Service Manual

Fisher FSAIF-BL-91FE3 Service Manual

Inverter air conditioner

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Inverter air conditioner
Service Manual
Models
FSAIF-BL-91FE3/ FSAIF-BL-91FE3
FSAIF-BL-121FE3/ FSAIF-BL-121FE3
FSAIF-BL-181FE3/ FSAIF-BL-181FE3
FI_SM_FSAIF-BL-91-121-181FE3_20240429

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Summary of Contents for Fisher FSAIF-BL-91FE3

  • Page 1 Inverter air conditioner Service Manual Models FSAIF-BL-91FE3/ FSAIF-BL-91FE3 FSAIF-BL-121FE3/ FSAIF-BL-121FE3 FSAIF-BL-181FE3/ FSAIF-BL-181FE3 FI_SM_FSAIF-BL-91-121-181FE3_20240429...
  • Page 2: Table Of Contents

    Air Conditioner Service Manual CONTENTS Part Ⅰ Technical Information ....................3 Important Notice ......................3 1. Product Dimension .................... 4 2. Refrigeration cycle diagram .................... 5 3. Wiring Diagram ........................ 6 4.Electronic Controller Introduction…………………………………..…………..…………..7 4.1 Electronic Controller ....................7 4.2 WIFI OPERATION MAUAL ..................14 PART Ⅱ...
  • Page 3: Part Ⅰ Technical Information

    Air Conditioner Service Manual Part Ⅰ Technical Information 1. Important Notice This service manual is intended for use by individuals possessing adequate backgrounds of electrical, electronic and mechanical experience. Any attempt to repair the appliance may result in personal injury and property damage.
  • Page 4: Product Dimension

    Air Conditioner Service Manual 2. Product Dimensions Indoor Unit: Outdoor Unit: Indoor unit Outdoor unit Model 433.8 433.8 1100 374.9 347.5 58.6...
  • Page 5: Refrigeration Cycle Diagram

    Air Conditioner Service Manual 2. Refrigeration cycle diagram...
  • Page 6: Wiring Diagram

    Air Conditioner Service Manual 3. Wiring Diagram MODEL: FSAIF-BL-91FE3/ FSOAIF-BL-91FE3, FSAIF-BL-121FE3/ FSOAIF-BL-121FE3, FSAIF-BL-181FE3/ FSOAIF-BL-181FE3 = standard options INDOOR UNIT: OUTDOOR UNIT (OPTIONAL) REACTOR DRED RD(WH) RD(WH) GNYE WH(BU) BK(BN) θ GN(GNYE) GNYE(GN) GN(GNYE) θ θ (OPTIONAL) (OPTIONAL) GNYE COMPRESSOR PROTECT SWITCH...
  • Page 7: Electronic Controller Introduction

    Air Conditioner Service Manual 4. Electronic Controller Introduction 4.1 Electronic Controller RT-------Room Temperature. IPT------Indoor Pipe (Coil) Temperature. ST------Indoor Setting Temperature. OPT---Outdoor Pipe Temperature. OAT---Outdoor Ambient Temperature. ODT---Outdoor Discharge Temperature. CRT---Compensated Room Temperature. IDU--- Indoor unit ODU---Outdoor unit. Note: When AC finishing installation, because of the air ventilation and the distance of temperature test sensor to different location of the house, the temperature for IDU PCB control need compensation.
  • Page 8: Dry Mode

    Air Conditioner Service Manual After compressor ceased, the fan motor stops working according to the temperature of OPT and OAT, the max delay for the motor should be less than 160s. 2). When switch on unit on cooling mode, ODU fan motor will delay 5s after compressor starts up. 4.
  • Page 9 Air Conditioner Service Manual 3). The compressor frequency control: Based on relation of RT & ST, and the changing speed of RT. 4). The compressor will also stop working while unit: a. switched off. b. under protection. c. changed to fan mode. 5).
  • Page 10: Fan Mode

    Air Conditioner Service Manual and also the temperature (related to OAT & OPT) tested 3 min continuously meets for defrosting. 1) Defrosting start up: Compressor stops working, and re-starts to working after 50s delay; 2) Conditions for quitting defrosting a. After defrosting 60s, and OAT≥12℃; or b.
  • Page 11: Auto Restart Function

    Air Conditioner Service Manual 4.1.6 Timer The unit has times control, when the unit meet the timer preset, it will be switched on or off automatically. 1. TIMER ON 1). TIMER ON can be set only when the air conditioner is OFF. 2).
  • Page 12 Air Conditioner Service Manual stop-working protection will be reset to zero and start a new counting process. The failure and times for protection will eliminate immediately once the unit to be switched off, on fan mode or changed to be heating mode from others. Note: If the defective failure can’t be recovered, the failure can’t eliminate even if operation mode changed.
  • Page 13 Air Conditioner Service Manual The failure and times for protection will eliminate immediately once the unit to be switched off, or changed to fan mode. Note: If the defective failure can’t be recovered, the failure can’t eliminate even if operation mode changed. 4.1.11 Complementary 4.1.11.1 Energy saving (ECO) Function effective on Cooling and Heating mode only.
  • Page 14: Wifi Operation Maual

    Air Conditioner Service Manual 4.2 WIFI OPERATION MAUAL 4.2.1 The WIFI control logic CLOUD Internet controller Home wireless router TCL AC IDU WIFI module IDU PCB Remote controller 4.2.2 Download and installation Customer can scan the QR in the user manual or from appliance APP store to download the APP and install it in the cell phone, while installation achieved, there would be an icon as picture created on the desktop.
  • Page 15: Part Ⅱ Installation And Maintenance

    Air Conditioner Service Manual PART Ⅱ Installation and Maintenance 1. Notes for installation and maintenance Safety Precautions Important! Please read the safety of precautions carefully before installation and maintenance. The following contents are very important for installation and maintenance. Please follow the instructions bellow. ●...
  • Page 16 Air Conditioner Service Manual 6) Make sure no foreign objects are left in the unit after finishing installation. Improper installation may lead to fire hazard, explosion, electric shock or injury. Safety precautions for Installing and Relocating the unit. To ensure safety, please be mindful of the following precautions. Warnings When installing or relocating the unit, be sure to keep the refrigerant circuit free from air or substances other than the specified refrigerant.
  • Page 17 Air Conditioner Service Manual Introduction R32, R290 air conditioner installation 1) Introduction to Refrigerants R32 & R290 The refrigerants used for air conditioners are environmentally friendly hydrocarbons R32 and R290. The two kinds of refrigerants are combustible and odorless. Moreover, they can burn and explode under certain condition.
  • Page 18: Installation Safety

    Air Conditioner Service Manual Caution:  Please contact the nearest after-sale service center when maintenance is necessary. At the time of maintenance, the maintenance personnel must strictly comply with the Operation Manual provided by the corresponding manufacturer and any non-professional is prohibited to maintain the air conditioner. ...
  • Page 19: Special Tools

    Air Conditioner Service Manual It is necessary to choose the place where the inlet and outlet air of the indoor unit is even.  It is necessary to avoid the places where there are other electrical products, power switch plugs and ...
  • Page 20 Air Conditioner Service Manual of the refrigerant leak detector should not exceed 25% of the lower explosion limit (LEL), the refrigerant leak detector must be working during maintenance. 2) Inspection of air conditioner  It is necessary to ensure that the air conditioner is in reliable ground connection before maintenance. ...
  • Page 21 Air Conditioner Service Manual  It is necessary to provide firefighting devices such as dry powder or carbon dioxide fire extinguisher appropriate for extinguishing the electrical fire and keep such firefighting devices in a usable condition.  Temporary wires and sockets are prohibited on the maintenance location. 6).
  • Page 22 Air Conditioner Service Manual precautionary measures in work. For example, it is prohibited to enter the location with any kindling material and it is prohibited to wear clothing or shoes which easily produce static. Handling suggestions when a large amount of combustible refrigerant leaks: It is necessary to immediately operate the ventilating equipment while cutting off other power supply and ...
  • Page 23: Installation

    Air Conditioner Service Manual 2 Installation 2.1 Installation Dimension Diagram Space to the wall At least 15cm At least 15cm Space to the wall Space to the obstruction Space to the floor Space to the obstruction Drainage pipe Connecting wire...
  • Page 24: Accessory

    Air Conditioner Service Manual 2.2 Accessory Remote controller Remote Batteries Vinyl tape controller supporter OTIONAL Drain hose Hole cover Screw Insulation material 2.3 Tools Picture Picture Picture Tool name Tool name Tool name Standard Pipe Vacuum Pump Wrench Cutter Screw Adjustable/ drivers Crescent...
  • Page 25: Position

    Air Conditioner Service Manual 1) Must follow the electric safety regulations when 2.4 Position installing the unit. Indoor unit 2) According to the local safety regulations, use  Install the indoor unit level on a strong wall that is qualified power supply circuit and air switch. not subject to vibrations 3)...
  • Page 26: Refrigerant Piping Connection

    Air Conditioner Service Manual 9K(770T) The hole must slope downwards towards the exterior. Note: Keep the drain pipe down towards the direction of the wall hole, otherwise leakage may occur. 2.6.3 Electrical connections---Indoor unit 1).Lift the front panel. 2).Take off the cover as indicated in the picture (by removing a screw or by breaking the hooks).
  • Page 27 Air Conditioner Service Manual so that water can flow freely. Capacity Pipe Size (Torque) (Btu/h) Liquid 7/9/12K 3/8" (31-35N.m) 1/4" (15-20N.m) 3/8" (31-35N.m) 1/4" (15-20N.m) 1/2" (45-50N.m ) 1/4" (15-20N.m) Wrap the insulation material around the connecting portion.  Overlap the connection pipe insulation material and the indoor unit pipe insulation material.
  • Page 28: Odu Installation

    Air Conditioner Service Manual 4).If the piping is installed to the right, the pipes, power Outdoor unit condensed water drainage cable and drain hose must be lagged and secured (only for heat pump models) onto the rear of the unit with a pipe connection. The condensed water and the ice formed in the outdoor unit during heating operation can be drained away through the drain pipe.
  • Page 29: Vacuum And Gas Leakage Test

    Air Conditioner Service Manual 2. Leakage Detection connection pipes 1).With leakage detection. Check if there is leakage with leakage detection. flare nuts 2).With soap water. If leakage detection is not liquid tap available, please use soap water for leakage gas tap detection.
  • Page 30: Maintenance

    Air Conditioner Service Manual 3. Maintenance 3.1 Failure code Code Reason Remark IDU & ODU Communication failure The IDU & ODU wiring connection correct? IDU Room Temperature sensor failure.(IDU IDU sensor and PCB. RT failure) IDU Coil temperature sensor failure.(IDU IPT IDU sensor and PCB.
  • Page 31 Air Conditioner Service Manual Cooling system gas flow abnormal Please check the troubleshooting for detail. PROTECTION.. PFC PROTECTION Please check the troubleshooting for detail. The Compressor lack of phase / Anti-phase Please check the troubleshooting for detail. PROTECTION. IPM Module temperature PROTECTION Please check the troubleshooting for detail.
  • Page 32: Trouble Shooting

    Air Conditioner Service Manual 3.2 Trouble shooting 3.2.1 E0 ---IDU & ODU communication failure Start Display E0 IDU wiring Check and re- E0 disappear? connection correct ? connect Check communication Replace/ re- E0 disappear? wiring and the connection, connect in good condition? ODU wiring Check and re- E0 disappear?
  • Page 33 Air Conditioner Service Manual 3.2.2 E1, E2 ---IDU Room temperature sensor and/or coil temperature sensor failure. Start Display E1or E2 Is the sensor well Re-connect connected to PCB E1/E2 disappear? Multi-meter check the Replace the sensor sensor, is it open or short circuit? The malfunction eliminated?
  • Page 34 Air Conditioner Service Manual 3.2.3 E4 --- AC Cooling system abnormal (Gas not enough) Start Display E4 Check the pressure AC pressure correct? Check the sensor short or (cooling:0.8-1.3Mpa,/ open? heating 2.0-3.6Mpa) Replace the sensor Check the valves open or Replace the main PCB Open the valves Lower than 0.8 Mpa in...
  • Page 35 Air Conditioner Service Manual 3.2.4 E6----IDU ventilation failure (PG and DC fan motor only) Start Display E6 Turn the fan blades by hand while power-off condition Adjust the motor and blade Can the fan blades run assembly so that rotor can smoothly? run smoothly.
  • Page 36 Air Conditioner Service Manual 3.2.5 E3, E7 or E8----ODU Coil temperature sensor, Ambient temperature sensor or Discharge temperature sensor failure. When any of the sensor resistance open or short circuit , unit will display failure code as E3/E7 or E8, IDU and ODU turns off.
  • Page 37 Air Conditioner Service Manual 3.2.6 E9---ODU IPM /Compressor drive fault If unit have 6 times stopping works for IPM protection (P0) continuously, it will display E9 error, and unit can’t be recovered to operation, except press ON/OFF button. Display E9 Cut the power and supply again, restart unit.
  • Page 38 Air Conditioner Service Manual 3.2.7 EF---ODU DC fan motor failure Shut off Check the fan blade by Re install the DC motor hand, can it rotate freely Works normal? Fan motor well Re-connect connect to PCB Works normal? 1. For built-in control (5pins) motor: check the V =310V? =15V?
  • Page 39 Air Conditioner Service Manual 3.2.8 EU---ODU voltage test sensor failure After power relay works, when tested voltage effective value less than 50V for 3s continuously, unit will display EU. Start Display EU Test voltage btw ODU Check while voltage terminal L/N, more than become normal 50V~? Unit works?
  • Page 40 Air Conditioner Service Manual 3.2.9 P0---IPM protection When overheat or overcurrent for IPM, AC unit will display P0protection. Display P0 Restart unit. It works normal? Wiring connection Re-connect U/V/W correct? P0 disappear? ODU fan motor no Replace ODU Can compressor works or too slowly? fan motor start up?
  • Page 41: Over / Under Voltage Protection

    Air Conditioner Service Manual 3.2.10 P1--- Over / under voltage protection 1. Test voltage between L &N, When the power supply V>AC260V or V<AC150V, AC will display P1 protection, unit will recover back to previous status while V>AC155V. 2. Test voltage on the big size electrolytic capacitor of ODU PCB, When DC busbar voltage V>DC420V or V <DC150V, unit will recover back to previous status while DC190V<V<DC410V Display P1 Wait until the AC...
  • Page 42 Air Conditioner Service Manual 3.2.11 P2---Over Current protection When the AC unit running current more than I , it will stop and display P2 protection. Note: for different AC model, I has difference valve. Display P2 ODU fan motor Replace fan motor works? P2 disappear? IDU filter or ODU...
  • Page 43 Air Conditioner Service Manual 3.2.12 P4 ---ODU Discharge temperature overheating protection Display P4 Check whether Replace the discharge discharge Temp. P4 disappear? pipe sensor over than 110℃? ODU temperature Normal protection higher than 60℃? ODU location Adjust ODU Enough space for Unit operate? installation acceptable?
  • Page 44 Air Conditioner Service Manual 3.2.13 P5---Sub-cooling protection on Cooling/Dry mode On Cooling or Dry mode, when IDU evaporator coil temperature IPT<1℃ continuously for 3 min after compressor start up for 6 min, CPU will switch off outdoor unit and show P5 failure code. Display P5 Switch on unit after minutes...
  • Page 45 Air Conditioner Service Manual 3.2.14 P6---Overheating protection on Cooling mode On Cooling or Dry mode, when ODU condenser coil temperature OPT≥62℃ , MCU will switch off outdoor unit and show P6 failure code. Display ODU fan motor Fan motor Replace fan motor works normal? broken? P6 disappear?
  • Page 46 Air Conditioner Service Manual 3.2.15 P7---Overheating protection on heating mode ℃ On heating mode, when IDU evaporator coil temperature IPT≥62 , ODU PCB will switch off outdoor unit and show P7 failure code. Display P7 IDU fan motor Fan motor Replace fan motor works normal? broken?
  • Page 47 Air Conditioner Service Manual 3.2.16 P8---Outdoor Overtemperature/Under-temperature protection When environment temperature as below condition, the compressor will stop working, after 200s delay, the IDU will show P8 failure code. (1). On Cooling or Dry mode: ODU ambient temperature: OAT<-20℃ or OAT>63℃; (2).
  • Page 48 Air Conditioner Service Manual 3.2.17 P9---The compressor driving protection (the compressor load abnormal) When compressor start up or in the process of operation, if: (1). MCU can’t test the feedback signal from compressor, or (2). Tested a abnormal signal from compressor, or (3).
  • Page 49 Air Conditioner Service Manual 3.2.18 F4---Cooling system Gas flow abnormal protection When compressor startup, unit will check the variation of IDU coil temperature. If there is mistake installer forgetting to open the 2-way or 3-way valve on ODU, the gas can’t flow in the cooling system, it will show F4 protection. Start Display F4 Check the 2-way...
  • Page 50 Air Conditioner Service Manual 3.2.19 F5---PFC Protection PFC Overcurrent protection F5 Code Check the power supply, Display F5 by is it abnormal? (this is random? normal protection) Display F5 frequently Switch off the unit for 3 Still F5? minutes and re-switch on Still F5? Replace ODU PCB...
  • Page 51 Air Conditioner Service Manual 3.2.20 F6 The Compressor Lack of phase / Anti-phase protection. If ODU PCB can’t test one, or even three phase of compressor current, it will show F6 protection. Display F6 Check compressor Re-connect wiring connector, is it well connected? Problem solved? The Compressor...
  • Page 52 Air Conditioner Service Manual 3.2.21 F7---Module temperature protection. IPM overtemperature protection, when IPM temperature more than 95℃, it will show F7. Display F7 Clean or adjust the gap IPM well contact Any dust or gap btw btw IPM and heat sink to heat sink? IPM &...
  • Page 53 Air Conditioner Service Manual 3.2.22 F8---4-Way Value Reversing abnormal On heating mode, if IDU Coil temperature tested lower than Room temperature 5℃ or even more after compressor works for 8min, unit will show F8 code. Display F8 the 4-way valve wiring connection Re-connect correct?
  • Page 54 Air Conditioner Service Manual 9.2.23 Fy--- Gas leakage protection After compressor works in high frequency for 9 min, if the temperature on IDU evaporator & ODU condenser has only a little variation comparing previous, but, the compressor discharge temperature on high level, then the unit will show Fy failure code.
  • Page 55 Air Conditioner Service Manual 9.2.24 CL---Duty caution Air filter duty, the unit operation Cumulative time 500 hours, the controller will confirmation the filter dirty and display Display CL Check whether the air filter duty? Clean the air filter Cut off the power and supply again...
  • Page 56: Disassembly Idu & Odu

    Air Conditioner Service Manual 4. Disassembly IDU & ODU 4.1. IDU Disassembly Steps Reference photo 1. Before disassembly The original status. 2. Disassemble Front Panel, Display Board. A. Open front panel. B. Remove one screw and take the display box out from panel. C.
  • Page 57 Air Conditioner Service Manual 5. Disassemble the Bottom Plate. Force apart the bottom plate left and right sides with hands towards as RED arrow, you can easily disassemble the bottom plate. (Note: there’re buckles on bottom plate) buckles buckles 6. Disassemble the Flap Assembly Force apart the flap assembly from base plate, you can take the it out.
  • Page 58 Air Conditioner Service Manual 8. Disassemble the Mid Frame Clip A. unfix 2 screws between mid frame and base plate. B. Apart 4 buckles upside mid frame from base plate. C. Apart air outlet the upper Clip side and lower side hooks from base plate shown as picture.
  • Page 59 Air Conditioner Service Manual 11. Disassemble Evaporator (EVP). A. Unfix screw btw EVP and Clip base. B. Loose the EVP left locker Clip with base, you can raise up EVP left side. C. When raise EVP left side up, along with the EVP right side loosen...
  • Page 60: Odu Assembly

    Air Conditioner Service Manual 4.2 ODU Assembly Step Reference picture step1:Remove the PCB Cover , valve Cover and top cover 1). Unfix one screw on the PCB cover, you can take the cover out from unit. 2). Unfix one screw on the valve cover, you can take it out easily.
  • Page 61 Air Conditioner Service Manual ODU middle separate plate and base plate, uplift front panel you can take it out from unit. step3:Disassemble the Left and Right plate. Unfix screws btw Right Plate and the Electric Box assembly, Valve Plate , Base Plate, then you can take the Right plate out.
  • Page 62 Air Conditioner Service Manual step4:Disassemble the Axis Fan Blade Unscrew the fan blade nut, and take the blade out. step5:Disassemble the electric box Unfix screw btw Electric Box and motor supporter etc. loosen the wiring clamp, then you can take the control box out.
  • Page 63 Air Conditioner Service Manual step7:Disassemble the separate plate Unfix the screw btw separate plate and unit, and take it out step8:Disassemble the 2 and 3-way valve Unfix screw btw Valve plate and base, you can take the 2-way and 3-way valve out by welding.
  • Page 64 Air Conditioner Service Manual step10:Disassemble the compressor. Unscrew the nuts and take the compressor out. step11:Remove the fan motor and fan supporter. Unfix screws btw fan motor with supporter, and supporter with base plate. Note: Pay attention to the motor wiring, it can’t be taken out by force.
  • Page 65: Appendix

    Air Conditioner Service Manual APPENDIX Appendix 1 The comparison table of Celsius-Fahrenheit temperature Fahrenheit Fahrenheit Fahrenheit Celsius Celsius Celsius diplay Fahrenheit diplay Fahrenheit diplay Fahrenheit temperature ℃ temperature ℃ temperature ℃ (℉) (℉) (℉) (℉) (℉) (℉) 60.8 69/70 69.8 78/79 78.8 62/63...
  • Page 66: Appendix 3 Pipes Flaring

    Air Conditioner Service Manual Appendix 3 Pipes Flaring Main cause for gas leakage is due to defect in flaring work. Carry out correct flaring work in the following procedure. A. Cut the pipes and the cable. 1) Use the piping kit accessory or the pipes purchased locally. 2) Measure the distance between the indoor and the outdoor unit.
  • Page 67: Appendix 4 Thermistor Temperature Characteristics

    Air Conditioner Service Manual Appendix 4 THERMISTOR TEMPERATURE CHARACTERISTICS 1). Indoor unit and outdoor exchange temperature and outside air temperature sensor temperature characteristics TEMP. R min R(t) R max TEMP. R min R(t) R max TEMP. R min R(t) R max ℃...
  • Page 68 Air Conditioner Service Manual 8.545 8.792 9.044 1.328 1.374 1.421 0.319 0.333 0.349 8.199 8.431 8.667 1.287 1.332 1.378 0.311 0.325 0.340 7.870 8.087 8.308 1.247 1.291 1.336 0.303 0.317 0.332 7.554 7.758 7.965 1.208 1.251 1.295 0.296 0.309 0.324 7.254 7.445 7.639...
  • Page 69 Air Conditioner Service Manual 91.548 103.469 115.391 8.516 9.061 9.606 1.400 1.455 1.509 86.956 98.138 109.320 8.194 8.711 9.228 1.358 1.412 1.465 82.617 93.108 103.600 7.886 8.376 8.866 1.317 1.370 1.423 78.516 88.362 98.209 7.591 8.056 8.520 1.277 1.329 1.382 74.640 83.883 93.126...

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Fsaif-bl-121fe3Fsaif-bl-181fe3

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