KFR-32GW/CBPY Inverter Split Unit 5D

Eighteen

KF(R) - 35, 50, 60GW/B01

Serial number Fault phenomenon Fault display (Power indicator light flashing)

1 Indoor pipe temperature resistor failure (IRT) Flashes 1 time/8 seconds

2 Indoor room temperature resistor failure (RT) Flashes 2 times/8 seconds

3 Compressor protection, i.e., when the compressor runs for 8 minutes and IRT-RT ≤ 5℃, then it is judged as system abnormality, machine stops Flashes 4 times/8 seconds

4 Indoor fan fault (If during operation the indoor fan feedback signal cannot be detected within 12 seconds, it is judged as an indoor fan fault), machine stops Flashes 6 times/8 seconds

Nineteen KF(Rd) - 50GW/D010

Serial number Fault phenomenon Fault display

1 Indoor room temperature resistor failure (IRT) E1

2 Indoor pipe temperature resistor failure (IRT) E2

3 Machine phase loss, incorrect phase, overcurrent, high/low pressure protection E3

4 Poor cooling, (When the compressor runs continuously for 15 minutes during cooling, IPT ≥ 25℃ and lasts for 1 minute, the machine stops) E4

5 Poor heating (When the compressor runs continuously for 15 minutes during heating, IPT ≤ 20℃ and lasts for 1 minute, the machine stops) E6

Twenty

KF(Rd) - 70, 75, 120LW/D020(S)

Serial number Fault phenomenon Fault display

1 Indoor room temperature resistor failure (System detects return air temperature below -45℃ or above 90℃) E3

2 Indoor pipe temperature resistor failure (System detects coil temperature below -45℃ or above 90℃) E4

3 Compressor current protection occurs four times within one hour (Machine operating current exceeds its rated current by two times or more) P1

4 Outdoor unit abnormal protection (Phase loss protection, incorrect phase protection, high/low pressure switch protection, etc.) P6

Midea Air Conditioner Fault Codes Midea KFR-25, 35F, F1 Series

Sequence: Operation light, timer light, defrost light. ☆ flashes ○ lights ×; off

Current protection (PRI-5MIN PRI-3SEC)

☆ ☆ × Fan speed out of control

☆ ○ × Zero crossing detection error

☆ ☆ × Main chip and computer communication failure

☆ ○ × Indoor evaporator temperature sensor open circuit or short circuit

☆ × × Indoor room temperature sensor open circuit or short circuit

○ ☆ × Temperature fuse break protection (FUSED)

☆ ○ × Indoor evaporator high temperature protection or low temperature protection

☆ × × Dehumidification mode indoor temperature too low protection

× ○ ○ Write EEPROM parameters error at power-on

○ ○ ○ Read EEPROM parameters error at power-on

○ × ☆ Write EEPROM parameters error during operation

KFR--40GW/BPY-R

E0 Parameter error

E1 Communication fault between indoor and outdoor units

E2 Zero crossing detection error

E3 Fan speed out of control

E4 Temperature fuse break protection

E5 Outdoor temperature sensor fault

E6 Indoor temperature sensor fault

P0 Module protection

P1 Voltage too high or too low protection

P2 Compressor top temperature

Midea KFR-75LW/BD Maintenance Data 1. Fault indication function: When the system is in a certain fault or protection state, "Check" and the type of fault are displayed on the LCD display (using the time display segment, but the clock still operates internally without displaying). Other displays are not shown. At the same time, the operating status is retained. During protection, no key other than ON/OFF is responded to; LED1 on the switch board flashes quickly. After the protection recovers, the operation returns to normal. 2. Fault type display on the switch board.

Fault Type Display Code

Outdoor Unit Fault 01 Power Over/Under Voltage 02 Cooling Mode Evaporator Temperature Too Low 03 Heating Mode Evaporator Temperature Too High 04 Indoor Outlet Temperature Too High 05 Communication Failure Between Indoor Control Board and Pre-display Board 06 Indoor Unit Circuit Fault 07 Note: Fault Codes

The two digits of the minute in the clock indicate the fault type, the clock does not display. When there is an outdoor unit fault, LED2 on the indoor mainboard flashes quickly, turn off the outdoor unit, while notifying the switch board of the fault type, LED3 on the outdoor mainboard flashes quickly, turn off the outdoor unit, while notifying the indoor mainboard of the protection type. Meanwhile, the content indicated by the fault type display lights (LED4, 5, 6) is as follows: LED6 LED5

LED4

Protection Type

Overcurrent Protection

ON Outdoor Protection

Undercurrent Protection

ON Outdoor Protection

Pipeline Overpressure

ON Outdoor Protection

Pipeline Underpressure

ON ON

Outdoor Protection

Voltage Overvoltage

ON Voltage Over/Under Voltage

Voltage Undervoltage

ON ON

Voltage Over/Under Voltage

Phase Sequence Error

ON ON

ON

Outdoor Protection

Phase A Missing

Flashing

Outdoor Protection

Phase B Missing

Flashing

Outdoor Protection

Phase C Missing

Flashing

Outdoor Protection

Other

Outdoor Protection

Midea Air Conditioner Fault Codes Summary Table of Midea Inverter Air Conditioner Fault Codes

One, Inverter Split Units

1, KFR-28GW/BPY, KFR-32GW/BPY, KFR-45GW/BPY Indoor Unit Fault Indication

1.1 Indoor Unit Fault Display Function

KFR-28GW/BPY, KFR-32GW/BPY, Beijing Mitsubishi Air Conditioning After-sales Service Hotline, KFR-45GW/BPY Indoor Unit Fault Indication

Defrost Light Timer Light Auto Light Operation Light LED Status

× × ○ ☆ Module Protection

○ × × ☆ Compressor Top Temperature Protection

× ○ × ☆ Outdoor Temperature Sensor Open Circuit or Short Circuit

○ × ○ ☆ Cooling or Heating Outdoor Temperature Too Low or Too High

× ○ ○ ☆ Voltage Too High or Too Low Protection

○ ○ ○ ☆ Current Protection

○ ○ ○ ☆ Room Temperature, Evaporator Temperature Sensor Open Circuit or Short Circuit

○ × ☆ ☆ Indoor Evaporator High Temperature or Low Temperature Protection

× ○ ☆ ☆ Dehumidification Mode Indoor Temperature Too Low Protection

○ ○ ☆ ☆ Fan Speed Out of Control

☆ × ○ ☆ Zero Crossing Detection Error

☆ ○ × ☆ Temperature Fuse Break Protection

☆ ○ ☆ ☆ Model Mismatch

☆ ☆ ☆ ☆ Communication Protection Between Indoor and Outdoor Units

○----Bright ×----Off ☆----Flash

1.2 Outdoor Main Control Board LED Display

L4 Operation/Standby Indicator Light

Operation----Always Bright Standby----Flashing

KFR-28GW/BPY, KFR-32GW/BPY, KFR-45GW/BPY Outdoor Main Control Board Fault Indication

L3 L2 L1 Fault Description

① ② ③ (LED indicator light from left to right)

× × × Normal Operation

○ ○ ○ Normal Standby

× × ○ Current Protection

× ☆ ☆ Environmental Temperature Sensor Fault

☆ × ☆ Coil Temperature Sensor Fault

☆ 4I S6○ ☆ ○ Outdoor Voltage Too High or Too Low

☆ × ○ × IPM Module Protection

☆ × ○ ○ Compressor Top Temperature Protection

☆ ○ × × Two-minute Communication Fault Protection

☆ × ☆ × Preheating

☆ ○――Always Bright ☆――Flashing ×――Always Off

☆ 2, KFR-26GW/I1BPY, KFR-32GW/I1BPY, KFR-26GW/CBPY, KFR-32GW/CBPY Inverter Split Units

☆ _6N0W m&q9^2.1 Indoor Unit Fault Display Function

KFR-26GW/I1BPY, Beijing Mitsubishi Air Conditioning After-sales Phone, KFR-32GW/I1BPY, KFR-26GW/CBPY, KFR-32GW/CBPY Indoor Unit Fault Indication Indoor Unit Fault Indication

☆ Defrost Light Timer Light Auto Light (or Ventilation Light) Note1 Operation Light LED Status

× × ○ ☆ Module Protection

○ × × ☆ Compressor Top Temperature Protection

× ○ × ☆ Outdoor Temperature Sensor Open Circuit or Short Circuit

× ○ ○ ☆ Voltage Too High or Too Low Protection

○ ○ ○ ☆ Room Temperature, Evaporator Temperature Sensor Open Circuit or Short Circuit

○ ○ ☆ ☆ Fan Speed Out of Control

☆ × ○ ☆ Zero Crossing Detection Error

☆ ○ × ☆ Temperature Fuse Break Protection

× × ☆ ☆ EEPROM Parameter Error Indication

☆ ○ ☆ ☆ Model Mismatch

☆ ☆ ☆ ☆ ☆ Communication Protection Between Indoor and Outdoor Units

○――Always Bright ☆――Flashing ×――Always Off

Note1: For KFR-26GW/I1BPY, KFR-32GW/I1BPY, it's Automatic Light; For KFR-26GW/CBPY, KFR-32GW/CBPY, it's Automatic Ventilation and Continuous Ventilation Light

2.2 Outdoor Main Control Board LED Display

Only L4 Operation/Standby/Indicator Light outdoors

Operation: Always Bright Standby: 0.5HZ Flashing Fault: 1HZ Flashing

3, KFR-26GW/BPY-R, KFR-35GW/BPY-R, KFR-26GW/BPY-S, KFR-35GW/BPY-S, KFR-26GW/BPUYP-V, KFR-32GW/BPUYP-V Inverter Split Units

3.1 Indoor Unit Fault Display

KFR-26GW/BPY-R, KFR-35GW/BPY-R, KFR-26GW/BPY-S, KFR-35GW/BPY-S Indoor Unit Fault Indication

Display Content Fault or Protection

E0 EEPROM Parameter Error

☆ E1 Communication Fault Between Indoor and Outdoor Units

E2 Zero Crossing Detection Error

☆ E3 Fan Speed Out of Control

E4 Temperature Fuse Break Protection

E5 Outdoor Temperature Sensor Fault

E6 Indoor Temperature Sensor Fault

P0 Module Protection

P1 Voltage Too High or Too Low Protection

P2 Compressor Top Temperature Protection

3.2 Outdoor Main Control Board LED Display

Only L4 Operation/Standby/Indicator Light outdoors

Operation: Always Bright Standby: 0.5HZ Flashing Fault: 1HZ Flashing

3.3 KFR-26GW/BPY-R1, KFR-35GW/BPY-R1 Indoor Unit Fault Indication

Defrost Light Timer Light Drying Anti-Mold Light Strong Light LED Status

☆ X X X EEPROM Parameter Error

☆ O O O Module Protection

☆ O X X Compressor Top Temperature Protection

☆ X X O Outdoor Temperature Sensor Open Circuit or Short Circuit

☆ X O O Voltage Too High or Too Low Protection

☆ X O X Indoor Temperature Sensor Open Circuit or Short Circuit

☆ O X O Fan Speed Out of Control

☆ O O X Zero Crossing Detection Error

☆ ☆ ☆ ☆ Communication Protection Between Indoor and Outdoor Units

Note

O―――Always Bright ☆―――2HZ Flashing X―――Always Off

4, KFR-26GW/BP2UYP-U, KFR-32GW/BP2UYP-U, KFR-26GW/BP2UYP-V, KFR-32GW/BP2UYP-V DC Inverter Split Units

4.1 Indoor Unit Fault Display

KFR-26GW/BP2UYP-U, KFR-32GW/BP2UYP-U, KFR-26GW/BP2UYP-V, KFR-32GW/BP2UYP-V Indoor Unit Fault Indication

Display Content Fault or Protection

E0 EEPROM Parameter Error

E1 Communication Fault Between Indoor and Outdoor Units

E2 Zero Crossing Detection Error

E3 Fan Speed Out of Control

E4 Temperature Fuse Break Protection

E5 Outdoor Temperature Sensor Fault

E6 Indoor Temperature Sensor Fault

E7 Outdoor Fan Stall Fault (For V-type Full DC Inverter)

P0 Module Protection

P1 Voltage Too High or Too Low Protection

P2 Compressor Top Temperature Protection

P3 Outdoor Temperature Too Low Protection (Reserved)

P4 Compressor Position Detection Fault

4.2 Outdoor Main Control Board LED Display

There are 4 LED lights outdoors, which are Power Light (LED1), Status Lights (LED2, LED3, LED4)

Outdoor LED Display Function

LED1 Power Light Always Bright after Power On

LED4 LED3 LED2 Fault Description

Green Yellow Red (LED indicator light from left to right)

X X X Normal Operation

○ ○ ○ Normal Standby

○ X X Current Protection

☆ X X Exhaust Temperature Sensor Fault

☆ ☆ X Environmental Temperature Sensor Fault

☆ X ☆ Condenser Temperature Sensor Fault

0○ ☆ ○ Voltage Protection

X ○ X IPM Module Protection

○ ○ X Compressor Top Temperature Protection

X X ○ 2-minute Communication Fault Protection

☆ ☆ ○ Compressor Drive Protection

☆ X ○ Outdoor DC Fan Stall Protection

Note: ○――Always Bright ☆――Flashing X――Always Off

Flashing Frequency is 2Hz/s

Two, Inverter Console Units KFR-50LW/BPY, KFR-50LW/FBPY, KFR-61LW/FBPY Inverter Console Units

1.1 Indoor Unit LCD Display

Protection Information Code (Recoverable Protection)

KFR-50LW/BPY, KFR-50LW/FBPY, KFR-61LW/FBPY Indoor Unit Fault Indication

Code Content

P01 Communication Protection Between Indoor Board and Outdoor Board for 2 Minutes

P02 IPM Module Protection

P03 High/Low Voltage Protection

P04 Indoor Temperature Sensor Open Circuit or Short Circuit (Room, Temperature)

P05 Outdoor Temperature Sensor Open Circuit or Short Circuit (Condenser, Environment, Exhaust Temperature)

P06 Indoor Evaporator Temperature Protection Turn Off Compressor (High Temperature or Low Temperature)

P07 Outdoor Condenser High Temperature Protection Turn Off Compressor

P08 Dehumidification Mode Indoor Temperature Too Low Turn Off Compressor

P09 Outdoor Exhaust Temperature Too High Turn Off Compressor

P10 Compressor Top Temperature Protection

P11 Defrost or Prevent Cold Wind

P12 Indoor Fan Temperature Too Hot

P13 Communication Protection Between Indoor Board and Switch Board for 3 Minutes

1.2 Indoor Main Control Board LED Display

The indoor unit is equipped with 5 LEDs, where LED0 is the working indicator light, normally LED0 is lit, abnormally LED0 flashes at a frequency of 5HZ

KFR-50LW/BPY, KFR-50LW/FBPY, KFR-61LW/FBPY Indoor Main Control Board Fault Indication

LED4 LED3 LED2 LED1 LED0 LED Status

× × × ○ ☆ Module Protection

× × ○ × ☆ Compressor Top Temperature Protection

× ○ × × ☆ Indoor Room Temperature, Evaporator Temperature Sensor Open Circuit or Short Circuit

○ × × × ☆ Outdoor Temperature Sensor Open Circuit or Short Circuit

× × ○ ○ ☆ Cooling or Heating Outdoor Temperature Too Low or Too High

× ○ × ○ ☆ Exhaust Temperature Too High

× ○ ○ × ☆ Voltage Too High or Too Low Protection

○ × ○ × ☆ Current Protection

○ ○ × × ☆ Indoor Evaporator High/Low Temperature Protection!

× ○ ○ ○ ☆ Model Mismatch

○ × ○ ○ ☆ Dehumidification Mode Indoor Temperature Too Low Protection

○ ○ × ○ ☆ Communication Protection Between Indoor and Outdoor Units

○ ○ ○ × ☆ Communication Protection Between Indoor Unit and Switch Board P

○ ○ ○ ○ ☆ Temperature Fuse Break Protection

× × × × ○ Normal State (Frequency Value is Zero)

○ ○ × × ○ Normal State (Frequency Value is Not Zero)

○----Bright ×----Off ☆----Flash

1.3 Outdoor Main Control Board LED Display

L4 Operation/Standby/Indicator Light

Operation----Always Bright Standby----0.5HZ Flashing KFR-50LW/BPY, KFR-50LW/FBPY, KFR-61LW/FBPY Indoor Main Control Board Fault

Indication

L3 L2 L1 Fault Description

① ② ③ (LED indicator light from left to right)

× × × Normal Operation

○ ○ ○ Normal Standby U

× × ○ Current Protection

× ☆ ☆ Environmental Temperature Sensor Fault

☆ × ☆ Coil Temperature Sensor Fault

○ ☆ ○ Outdoor Voltage Too High or Too Low

× ○ × IPM Module Protection

× ○ ○ Compressor Top Temperature Protection

○ × × Two-minute Communication Fault Protection

× ☆ × Preheating

○――Always Bright ☆――Flashing ×――Always Off

2, KFR-50LW/F2BPY Inverter Console Unit

2.1 Indoor Unit Fault Display R

KFR-50LW/F2BPY Indoor Unit Fault Indication

LED Indication Fault Operation Light Timer Light Preheat Defrost Light

Current Protection × ☆ ☆

Compressor Top Temperature Protection ☆ × ☆

Outdoor Unit Sensor Fault × × ☆

Indoor Unit Temperature Sensor Fault × ☆ ×

Module Protection ☆ × ×

Voltage Protection ○ ☆ ☆

Indoor/Outdoor Unit Model Mismatch ☆ ☆ ×

Indoor/Outdoor Unit Communication Protection ☆ ☆ ☆

○――Always Bright ☆――Flashing ×――Always Off

2.2 Outdoor Main Control Board LED Display

Only L4 Operation/Standby/Indicator Light outdoors

Operation: Always Bright Standby: 0.5HZ Flashing Fault: 1HZ Flashing

3. KFR-50LW/MBPY, KFR-60LW/MBPY Inverter Console Units

3.1 Indoor Unit Fault Display

KFR-50LW/MBPY, KFR-60LW/MBPY Indoor Unit Fault Indication

Protection Content Fault Content

P1 Indoor/Outdoor 2-minute Communication Protection E1 Indoor Temperature Sensor Fault

P2 Module Protection E2 Reserved

P3 High/Low Voltage Protection E3 Reserved

P4 Indoor Evaporator High or Low Temperature Protection E4 Outdoor Temperature Sensor Fault

P5 Outdoor Condenser High Temperature Protection E5 Indoor Board and Display Board 3-minute Communication Fault

P6 Reserved E6 Reserved

P7 Outdoor Exhaust Temperature Too High Protection E7 Reserved

P8 Compressor Top Temperature Protection E8 Static Electricity Dust Removal Fault

P9 Defrost E9 EEPROM Fault

3.2 Outdoor Main Control Board LED Display

Only L4 Operation/Standby/Indicator Light outdoors

Operation: Always Bright Standby: 0.5HZ Flashing Fault: 1HZ Flashing

4.KFR-50LW/BPY-R, KFR-60LW/BPY-R Inverter Console Units

4.1 Indoor Unit Fault Display

When the air conditioner has a fault, the fault protection code is automatically displayed in the temperature display area for 5 seconds, then disappears, restoring the set temperature display

Press the "Test Run" key to enter the inspection status, then press the "▲" or "▼" key to check T1 (Indoor Temperature), T2 (Indoor Pipe Temperature), T3