TCL FMA-42I5HD/DVO Service Manual
  1. Manuals
  2. Brands
  3. TCL Manuals
  4. Air Conditioner
  5. FMA-42I5HD/DVO
  6. Service manual

TCL FMA-42I5HD/DVO Service Manual

Multi inverter air conditioner
Hide thumbs
Table of Contents

Advertisement

Quick Links

Air Conditioner Service Manual
Multi Inverter air conditioner
Service Manual
OUTDOOR Models：
FMA-18I2HD/DVO
FMA-27I3HD/DVO
FMA-32I4HD/DVO
FMA-42I5HD/DVO
INDOOR Models：
FMA-09CHSD/XAB1IN
FMA-12CHSD/XAB1IN
FMA-18CHSD/XAB1IN
FMA-09ZHRH/DVI
FMA-12ZHRH/DVI
FMA-18ZHRH/DVI
FMA-09D5RD/DVI
FMA-12D5RD/DVI
FMA-18D5RD/DVI
FMA-09CRD/DVI
FMA-12CRD/DVI
FMA-18CRD/DVI
0

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the FMA-42I5HD/DVO and is the answer not in the manual?

Questions and answers

Related Manuals for TCL FMA-42I5HD/DVO

Summary of Contents for TCL FMA-42I5HD/DVO

  • Page 1 Air Conditioner Service Manual Multi Inverter air conditioner Service Manual OUTDOOR Models： FMA-18I2HD/DVO FMA-27I3HD/DVO FMA-32I4HD/DVO FMA-42I5HD/DVO INDOOR Models： FMA-09CHSD/XAB1IN FMA-12CHSD/XAB1IN FMA-18CHSD/XAB1IN FMA-09ZHRH/DVI FMA-12ZHRH/DVI FMA-18ZHRH/DVI FMA-09D5RD/DVI FMA-12D5RD/DVI FMA-18D5RD/DVI FMA-09CRD/DVI FMA-12CRD/DVI FMA-18CRD/DVI...

  • Page 2: Table Of Contents

    Air Conditioner Service Manual CONTENTS 1. Important Notice 2. Refrigeration cycle diagram 3. Operation details 4. Wiring diagram 5. Precaution 6. Names of parts 7. Installation manual 8. Trouble shooting 9. Main parts inspection and check...

  • Page 3: Important Notice

    Air Conditioner Service Manual 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. The manufacturer or seller cannot be responsible for the interpretation of this information, nor can it assume any liability in connection with its use.

  • Page 4: Refrigeration Cycle Diagram

    Air Conditioner Service Manual 2. Refrigeration cycle diagram TIN1 PMV1 TIN2 PMV2 PMV3 TIN3 PMV4 CONDENSER TIN4 PMV5 TIN5 T2B1 T2B2 T2B3 T2B4 T2B5 liquid storage Optional...

  • Page 5: Operation Details

    Air Conditioner Service Manual 3. Operation details Electronic Controller Safety Protection (1) Time Delay for Safety protection 3 minutes delay for compressor ---The compressor is ceased for 3minutes before restarting ⚫ to balance the pressure in the refrigeration cycle in order to protect the compressor. 150 seconds delay for 4-way valve---The 4-way valve will be ceased for 150 seconds ⚫...
  • Page 6 Air Conditioner Service Manual of compressor is controlled by electronic controller. When room temperature is much higher than set temperature, the compressor will start at a high frequency, and as room temperature goes down, the compressor running frequency will go down. When room temperature is lower than set temperature, the compressor will run at very low frequency.
  • Page 7 Air Conditioner Service Manual seconds since the stop of compressor. 2) Auto fan control (heating) In heating mode (include in “feel” mode) , fan speed is determined by t as the following: δ δt come up RT-ST δt come down ℃...
  • Page 8 Air Conditioner Service Manual lower frequency firstly, then the compressor shuts down. In defrosting, all protection function are available. Drop frequency Rise Stop Times 2-11Min Rise frequency or stop frequency Defrost In defrosting, LED showing by winking. No matter what AC come into or out of defrosting, indoor fan motor speed is the same as Cold Air Prevention C ontrol.
  • Page 9 Air Conditioner Service Manual When the remote controller missing, failed or the batteries run down, press the EMERGENCY Operation switch on front of the indoor unit for function test. NOTE: Do not press the EMERGEMCY Operation switch during normal operation. 6.
  • Page 10 Air Conditioner Service Manual Error list ⚫ CASSETTE Outdoor light Indoor LED Failure Type blink time (n) LED1 LED2 LED3 LED4 Code ● ● ● ◎ Indoor and outdoor communication failure ◎ ◎ ● ● Outdoor communication failure ● ● ●...
  • Page 11 Air Conditioner Service Manual ⚫ Outdoor failure display There is a LED on outdoor power board, it blinks 1s ON and 1s OFF while compressor standby and it always light (ON) while compressor running; If there is failure happened on ODU, The indicator (LED) alerts the fault in a cycle as such that it is bright for 0.5 seconds, dark for 0.5 seconds, blinks “n”...

  • Page 12: Wiring Diagram

    Air Conditioner Service Manual 4. Wiring diagram INDOOR UNIT: Wall split type: 9K, 12K,18K Console type: 9K, 12K,18K...
  • Page 13 Air Conditioner Service Manual Cassette, Duct type： 9K, 12K,18K OUTDOOR UNIT ONE TO 2 TYPE:...
  • Page 14 Air Conditioner Service Manual ONE TO 3 TYPE: ONE TO 4 TYPE: ONE TO 5 TYPE:...

  • Page 15: Precaution

    Air Conditioner Service Manual Precaution 5.1 SAFETY RULES AND RECOMMENDATIONS FOR THE INSTALLATION ⚫ Read this guide before installing and using the appliance. ⚫ During the installation of the indoor and outdoor units the access to the working area should be forbidden to children.
  • Page 16 Air Conditioner Service Manual ⚫ The air conditioner must be installed by professional or qualified persons. Do not install the appliance at a distance of less than 50 cm from inflammable substances (alcohol, etc.) Or from pressurized containers (e.g. spray cans). ⚫...
  • Page 17 Air Conditioner Service Manual to cold air could be dangerous for your health .Particular care should be taken in the rooms where there are children, old or sick people. ⚫ If the appliance gives off smoke or there is a smell of burning, immediately cut off the power supply and contact the Service Centre.

  • Page 18: Names Of Parts

    Air Conditioner Service Manual thus causing electrocution. ⚫ Do not climb onto or place any objects on the outdoor unit ⚫ Never insert a stick or similar object into the appliance. It could cause injury. ⚫ Children should be supervised to ensure that they do not play with the appliance. If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard.
  • Page 19 Air Conditioner Service Manual Display Name Power Sleep Temperature display Timer Cassette type Indoor Unit Outdoor Unit Outdoor unit Name Electronic box cover 2-way valve 3-way vale...
  • Page 20 Air Conditioner Service Manual Display INFRARED S IG NAL R EC EIVER LIGHT ING ON PRE-DEF indic ator Tim er ind ic ato r Pum p ind ic a tor Ope ration ind ic ator O N when pres et time fo r switc hing ON /OF F the unit T ime r indic a to r Ope ration ind ic at or ON w hen the uni t is power o n...

  • Page 21: Installation Manual

    Air Conditioner Service Manual DISPLAY Defrosting/ preheat light Manual Sw itch Nixie tube Running light Timing light warning light 7. Installation manual 7.1 Installation Details Connecting pipe length Pipe size(Inch) Model Liquid 7/16 7/16 5/8，3/4 7/16 Indoor unit Outdoor unit Pipe length i s Pipe length is 15 meters Max.
  • Page 22 Air Conditioner Service Manual 15g/m 15g/m 15g/m Connecting cables The power cord should be selected according to the following specifications sheet. Appliance Amps Wire Size AWG21/0.75 mm2 AWG18/1.0 mm2 AWG15 /1. 5 mm2 AWG14/1.6 mm2 AWG12/2.0 mm2 AWG10/2.5 mm2 7.2 Installation for the first time Indoor unit Wall type: ⚫...
  • Page 23 Air Conditioner Service Manual To install, proceed as follows: 7.2.1 Installation of the mounting plate. Duct Wall Flammable Fire-proof or Fire-proof material nonflammable material structure materials Above 5cm Above 5cm Above 5cm Above 100cm Above 100cm Wall split type: • By using a level, put the mounting plate in a OUTDOOR UNIT perfect square position vertically and horizontally.
  • Page 24 Air Conditioner Service Manual New Concrete Bricks Inlaying or embedding the screw bolts. (Blade shape (Slide insertion) Duct insertion) Steel bar Embedding screw bolt How to mount outlet pipe. (Pipe hanging and embedding screw bolt) ⚫ Generally, we have two types of outlet pipe Steel roof beam structure available, i.e.
  • Page 25 Air Conditioner Service Manual vibration of ceiling board, as shown in figure below. Rivet Re turn air pipe Un it Unit Ca nvas air conduit Ca nvas air conduit Re turn air pipe Re turn air win dow Ri vet Installation mode for sidewise air intake 7.2.2 Drilling a hole in the wall for the piping 1) Decide where to drill the hole in the wall for the...
  • Page 26 Air Conditioner Service Manual 1).Remove the indoor unit pipe cap (check that installed every 1.5 to 2m to prevent winding. ⚫ there is no debris inside). Refer to the following figures about the 2).Insert the fare nut and create a flange at the installation of the pipes.
  • Page 27 Air Conditioner Service Manual 7.2.10 Bleeding Air and humidity left inside the refrigerant circuit can cause compressor malfunction. After having connected the indoor and outdoor units, bleed the air and humidity from the refrigerant circuit by using a vacuum pump. The air and humidity left inside the refrigerant circulation can cause compressor malfunction.

  • Page 28: Trouble Shooting

    Air Conditioner Service Manual 8. Trouble shooting 8.1 Outdoor control diagram 8.2 The structure of ODU PCB ONE TO 2 TYPE Sensor Expansion Compressor 4-way valve Motor circuit valve driving Communication Communication Communication LP HP Communication Switch power supply Switch power supply Filter circuit for Rectifying filtering circuit...
  • Page 29 Air Conditioner Service Manual ONE TO 3/4 TYPE: Expansion Sensor 4-Way valve Compressor valve circuit LP HP Motor driving Switch power supply Communication EEPROM Rectifying filtering Filter circuit for circuit heavy current 8.3 Examples of repairing 8.3.1 Display E1 or E2 Reasons: 1) The sensor connection terminal loose or not plugged in.
  • Page 30 Air Conditioner Service Manual Fail 3) The PCB fail. Solution: Replace the indoor main PCB. 8.3.2 Display E6 Reasons: 1) The indoor motor connection terminal loose or not plugged in. Solution: Check the connecter of indoor motor and slot (CN3) and (CN4), if loose or not plugged in, please connect again.
  • Page 31 Air Conditioner Service Manual 8.3.3 Display E3, E7 Reasons: 1) Outdoor pipe temp sensor, outdoor temp sensor & exhaust temp sensor connection terminal loose or not plugged in. Solution: Check the connecter of sensor and slot, if loose or not plugged in, please connect again. 2) Outdoor pipe temp sensor, outdoor temp sensor &...
  • Page 32 Air Conditioner Service Manual terminal L and N (before display of E0 fault). If the voltage is “0”, please replace indoor main PCB. 2) If the 1 & N which connect to indoor unit voltage is normal, measure the voltage between the outdoor terminal 1A, 1B, 1C, 1D and N.
  • Page 33 Air Conditioner Service Manual Any of 2 pins should be no short circuit Any of 2 pins should be no short circuit Any of 2 pins should be no short circuit 6) Test the DC voltage between DC+ and DC-. If the voltage is less than 50V approximately, please replace outdoor PCB.
  • Page 34 Air Conditioner Service Manual Heat radiation problem easily happened while the screw is not fixed tightly. Fixing screw 3) Check the system pressure, recharge refrigerant if the pressure is low, and discharge some refrigerant if the pressure is too high. 4) Check the outdoor ventilation and if there is any obstruction that affects the normal radiating of the air conditioner, and installation again.
  • Page 35 Air Conditioner Service Manual 8.3.11 Display EC Reason: The signal communication fault between power module and IPM module. Solution: Please replace the outdoor PCB. 8.3.12 Display EP Reason: The compressor top temperature high or the sensor fault. Solution: Check and replace the sensor or add some gas. 8.3.13 Display PA Reason: Two or three machine modes collide.

  • Page 36: Main Parts Inspection And Check

    Air Conditioner Service Manual 9. Main parts inspection and check 9.1 MALFUNCTION (PARTS) CHECK METHOD 9.1.1 Procedure for determining defective outdoor unit IPM/compressor The following flow chart shows a procedure for locating the cause of a malfunction when the compressor does not start up and a DC overcurrent indication error occurs.
  • Page 37 Air Conditioner Service Manual 9.1.2 DC Over Current Error Error memory is recorded Start Are valves (2-way or 3-war) close? Full open stop valves Does compressor rotates? Does compressor rotates more than 30 seconds? floating IPM PWB from the heat sink? with screws IPM PWB...
  • Page 38 Air Conditioner Service Manual 9.1.3 E0,E5 Error Replace inverter board and power Display E5 Start supply board or outdoor PCB assembly Display E0 Display E5 Display E5 Shut off power and supply Shut off power Replace inverter board again and and supply again observe 10 Mins Display E0...
  • Page 39 Air Conditioner Service Manual 9.2 THERMISTOR TEMPERATURE CHARACTERISTICS 1. Indoor unit and outdoor exchange temperature and outside air temperature sensor temperature characteristics TEMP. Resistance Voltage of TEMP. Resistance Voltage of TEMP. Resistance Voltage of ℃ ℃ ℃ (k Ohm) resistance (k Ohm) resistance (k Ohm)
  • Page 40 Air Conditioner Service Manual ℃ Resistance at 25 : wall split type 5 kΩ, cassette and duct 10kΩ. TH1: indoor room temperature sensor and outside air temperature sensor TH2: indoor exchange temperature sensor and outside exchange temperature sensor Before measuring resistance, disconnect connectors as shown above. 2.
  • Page 41 Air Conditioner Service Manual 63.74 70.48 77.87 6.309 6.655 7.013 1.073 1.12 1.168 60.69 67.05 6.08 6.409 6.748 1.042 1.089 1.136 57.81 63.8 70.34 5.861 6.173 6.495 1.013 1.058 1.104 55.08 60.72 66.88 5.651 5.947 6.253 0.9833 1.028 1.074 52.49 57.81 63.61 5.449...

Table of Contents