REPAIRING AND NOT THROWING AWAY

REPAIRING AND NOT THROWING AWAY

Richtige Fernseher haben Röhren!

Richtige Fernseher haben Röhren!

In Brief: On this site you will find pictures and technical information about Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

If you go into the profession, you will obtain or have access to a variety of tech tips databases HERE IT IS Master Electronics Repair !.

These are an excellent investment where the saying: 'time-is-money' rules. However, to learn, you need to develop a general troubleshooting approach - a logical, methodical, method of narrowing down the problem. A tech tip database might suggest: 'Replace C536' for a particular symptom. This is good advice for a specific problem on one model. However, what you really want to understand is why C536 was the cause and how to pinpoint the culprit in general even if you don't have a service manual or schematic and your tech tip database doesn't have an entry for your sick TV or VCR.

While schematics are nice, you won't always have them or be able to justify the purchase for a one-of repair. Therefore, in many cases, some reverse engineering will be necessary. The time will be well spent since even if you don't see another instance of the same model in your entire lifetime, you will have learned something in the process that can be applied to other equipment problems.
As always, when you get stuck, checking out a tech-tips database may quickly identify your problem and solution.In that case, you can greatly simplify your troubleshooting or at least confirm a diagnosis before ordering parts.

Happy repairing!
Today, the West is headed for the abyss. For the ultimate fate of our disposable society is for that society itself to be disposed of. And this will happen sooner, rather than later.

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..............The bitterness of poor quality is remembered long after the sweetness of todays funny gadgets low price has faded from memory........ . . . . . .....
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Wednesday 10 April 2019

LG AIR CONDITIONER – LG SPLIT AC - LG INVERTER AC - ERROR CODES – CAUSES AND SOLUTION – CH1– CH2

LG air conditioner – LG split AC - LG Inverter AC - Error codes – Causes and solution – CH1– CH2



ERROR CODE CAUSES AND SOLUTION - LG split AC 
CH 01
Indoor air sensor
 Connector connection error
 Faulty PCB
 Faulty sensor (Open / Short)
Normal resistor : 10K Ohms/ at 25 Degree C (Unplugged)
Normal voltage : 2.5Vdc / at 25 Degree C (Plugged)
CH 02
Indoor inlet pipe sensor
 Connector connection error
 Faulty PCB
Faulty sensor (Open / Short)
Normal resistor : 5K Ohms/ at 25 Degree C (Unplugged)
Normal voltage : 2.5Vdc / at 25 Degree C (Plugged)
CH 03
Communication Error (Wired remote controller)
 Connector connection error
 Faulty PCB / Remote controller
 Connection wire break
 Connection of wire
 Main PCB Volt. DC12V
 Noise interference
CH 04
Drain pump/ Float switch
 Float switch open. (Normal : short)
 Water over flow
 The connection of wire (Drain pump/ Float switch)
 Drain pump power input. (220V)
 Drain tube installation.
 Indoor unit installation. (Inclination)
CH 06
Indoor outlet pipe sensor
 Connector connection error
 Faulty PCB
 Faulty sensor (Open / Short)
Normal resistor : 5K Ohms / at 25 Degree C (Unplugged)
Normal voltage : 2.5Vdc / at 25 Degree C (Plugged)
CH 09
EEPROM Check sum (Indoor)
 Check sum error
 Check the poor soldering.
 Change PCB
CH 10
BLDC motor fan lock (Indoor)
 Fan motor break down
 Fan motor & PCB poor contact
 Obstruction to the fan
 Check the indoor fan motor.
 Check the connection status between
 PCB and fan motor.
CH 05/21
DC Peak
 Instant over current
 Over Rated current
 Poor insulation of IPM
 An instant over current in the U,V,W phase
- Comp lock
- The abnormal connection of U,V,W
  Over load condition
- Overcharging of refrigerant
- Pipe length.
 Poor insulation of compressor
CH 53
Communication
(Indoor <>Outdoor)
 The connector for trans mission is disconnected.
 The connecting wires are misconnected.
 The communication line is break
 Outdoor PCB is abnormal.
 Indoor PCB is abnormal.
 Check power input AC 230V. (Outdoor, Indoor)
 Check connector for transmission
 Check wires are misconnecting.
 Check transmission circuit of outdoor PCB
 Check transmission circuit of indoor PCB
CH 22
Max. C/T
 Over current
 Malfunction of compressor
 Blocking of pipe
 Low voltage input
 Refrigerant, pipe length, blocked,
CH 40
C/TInternal circuit
 Initial current error
 Malfunction of current detection circuit. (Open / Short)
 The voltage of “C01N” Is 4.0Vdc (25A) .
CH 23
DC Link Low voltage.
 1ph : DC link volt. Is 140Vdc .
 3ph : DC link volt. Is 250Vdc
 Check the power source.
 Check the components.
CH 28
DC Link High voltage
 1ph : DC link volt. is 140Vdc .
 3ph : DC link volt. is 250Vdc .
 Check the power source.
 Check the components.
CH 25
Input voltage
 Abnormal Input voltage (140Vac , 300Vac )
 Check the power source.
 Check the components.
CH 24
Press S/W Open
 Low / High press S/W open.
 Check the connection of “CN_PRESS”
 Check the SVC V/V open.
 Check the leakage of refrigerant.
CH 26
DC Compressor Position
 Compressor position detect error
 Check the connection of comp wire “U,V,W”
 Malfunction of compressor
 Check the component of “IPM”, detection parts.
CH 27
PSC Fault
PFC Fault
 Over current at “IGBT”/PFC module
 Check the component of “IGBT” /PFC module.
 Check the components.
CH 29
Inverter compressor over current
Inverter compressor input current is over 30A
1. Overload operation
(Pipe clogging/Covering/EEV defect/Ref. over charge)
2. Compressor damage(Insulation damage/Motor damage)
3. Input voltage low
4. ODU inverter PCB assembly damage
CH 32
D-pipe (Inverter) temp. high (105 Degree C )
 Discharge sensor (Inverter) temp. high
 Check the discharge pipe sensor for INV.
 Check the install condition for over load.
 Check the leakage of refrigerant.
 Check the SVC V/V open.
CH 33
D-pipe (Constant) temp. high (105 Degree C )
 Discharge sensor (Cons.) temp. high
 Check the discharge pipe sensor for Cons.
 Check the install condition for over load.
 Check the leakage of refrigerant.
 Check the SVC V/V open.
CH 39
Transmission Error
Between (PFC Micom  >INV Micom)
Communication Error Between PFC Micom and INV Micom.
1. Micom defect/Circuit defect
2. Different Micom S/W Version
3. ODU inverter PCB assembly damage
CH 41/47
D-pipe sensor(Inv)
D-pipe sensor(Cons)
 Connector connection error
 Faulty PCB
 Faulty sensor (Open / Short)
 Normal resistor : 200K Ohms/ at 25 Degree C (Unplugged)
 Normal voltage : 4.5Vdc / at 25 Degree C (plugged)
CH 44
Air sensor
 Connector connection error
 Faulty PCB
 Faulty sensor (Open / Short)
Normal resistor : 10K Ohms/ at 25 Degree C (Unplugged)
 Normal voltage : 2.5Vdc / at 25 Degree C (plugged)
CH 45/46
Condenser Pipe sensor Suction Pipe sensor
 Connector connection error
 Faulty PCB
 Faulty sensor (Open / Short)
 Normal resistor : 5K Ohms/ at 25 Degree C (Unplugged)
 Normal voltage : 2.5Vdc / at 25 Degree C (plugged)
CH 65
Heat sink sensor
 Connector connection error
 Faulty PCB
 Faulty sensor (Open / Short)
 Normal resistor : 5K Ohms/ at 25 Degree C (Unplugged)
 Normal voltage : 2.5Vdc / at 25 Degree C (plugged)
Posted By: FRANK at 01:56
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