1 |
Indoor air sensor |
• Open / Short • Soldered poorly • Internal circuit error |
Normal resistor: 10KS2/ at 25°C (Unplugged) Normal voltage : 2.5Vdc / at 25°C (plugged) |
2 |
Indoor inlet pipe sensor |
• Open / Short • Soldered poorly |
Normal resistor: 5K£2/ at 25°C (Unplugged) Normal voltage : 2.5Vdc / at 25°C (plugged) |
6 |
Indoor outlet pipe sensor |
• Internal circuit error |
– |
3 |
Communication |
• Open / Short |
• Connection of wire |
3 |
Wired R/C |
• Wrong connection |
• Main PCB Volt. DC 12V • Noise interference |
4 |
Drain pump/Float switch |
• Float switch Open. (Normal: short) |
• The connection of wire(Drain pump/ Float switch) • Drain pump power input. (220V) • Drain tube installation. • Indoor unit installation. (Inclination) |
апр.53 |
Communication (Indoor – Outdoor) |
• Communication poorly |
• Power input AC 220V. (Outdoor, Indoor) • The connector for transmission is disconnected. • The connecting wires are misconnected. • The GND1,2 is not connected at main GND. • The communication line is shorted at GND. • Transmission circuit of outdoor PCB is abnormal. • Transmission circuit of indoor PCB is abnormal. |
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 |
22 |
Max. C/T |
Over current (14A) |
Malfunction of compressor Blocking of pipe Low voltage input Refrigerant, pipe length, blocked |
40 |
CfT Internal circuit |
Initial current error |
Malfunction of current detection circuit. (Open / Short) The voltage of “C01N” Is 4.0Vdc(25A). |
23 |
DC Link |
• DC link volt, is 140Vdc. |
• Check the power source. |
23 |
Low voltage. |
– |
• Check the components. |
28 |
DC Link High voltage |
• DC link volt, is 420Vdc T |
– |
24 |
Press S/W Open |
• Low / High press |
• Check the connection of “CN_Press”. • Check the components. |
25 |
Input voltage |
• Abnormal Input voltage |
• Check the power source. • Check the components. |
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. |
27 |
PSC Fault |
• Over current at “IGBT” |
• Check the component of “IGBT”. • Check the components. |
32 |
D-pipe (Inverter) temp, high (105°C t) |
• 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. |
33 |
D-pipe (Constant) temp, high (105°C I) |
• 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. |
41 |
D-pipe sensor (Inverter) |
• Open / Short • Soldered poorly • Internal circuit error |
• Normal resistor: 200K£2 / at 25°C (Unplugged) • Normal voltage : 4.5Vdc / at 25°C (plugged) |
44 |
Air sensor |
– |
• Normal resistor: 10K£2 / at 25°C (Unplugged) • Normal voltage : 2.5Vdc / at 25°C (plugged) |
45 |
Condenser Pipe sensor |
– |
• Normal resistor: 5K£2 / at 25°C (Unplugged) |
46 |
Suction Pipe sensor |
– |
• Normal voltage : 2.5Vdc / at 25°C (plugged) |
47 |
D-pipe sensor (Constant) |
– |
• Normal resistor: 200K£2 / at 25°C (Unplugged) • Normal voltage : 4.5Vdc / at 25°C (plugged) |
65 |
Heat sink sensor |
– |
• Normal resistor: 10K£2 / at 25°C (Unplugged) • Normal voltage : 2.5Vdc / at 25°C (plugged) |
51 |
Over capacity |
• Over capacity |
• Check the indoor unit capacity. • Check the combination table. |
60 |
EEPROM Check sum |
• Check sum error |
• Check the PCB ASM P/No. • Check the poor soldering. |
61 |
Condenser pipe sensor temp, high |
• Condenser pipe sensor detected high temp.(65°C) |
• Check the load condition. • Check the sensor of Condenser pipe sensor. |
62 |
Heat sink sensor temp, high |
• Heat sink sensor detected high temp.(85°C) |
• Check the fan is locked. • Check the sensor of heat sink. |
май.53 |
Title Communication (Indoor – Outdoor) |
• Communication poorly |
• Power input AC 220V. (Outdoor, Indoor) • The connector for transmission is disconnected. • The connecting wires are misconnected. • The communication line is shorted at GND. • Transmission circuit of outdoor PCB is abnormal. • Transmission circuit of indoor PCB is abnormal. |
21 |
DC PEAK (IPM Fault) |
• 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 • Overload condition – Overcharging of refrigerant Pipe length. Outdoor Fan is stop • Poor insulation of compressor |