
120
COMMISSIONING
ENGLISH
Inverter PCB error display method
Red LED means error number 10 digits, and green LED
means 1 digit, and if red and green blink at the same time, it
means the unit of 100.
Ex) Inverter compressor IPM defect Error : error number 21
Red LED1: 10 digits
Green LED2: 1 digit
Error
No.
Error Type
Main Reasons
bc21 Inverter compressor IPM defect
Inverter compressor drive IPM defect / inverter compressor
defect
bc22 Inverter compressor overcurrent
Increase of inverter compressor CT value
bc23 Inverter compressor DC Link low voltage
After inverter activation relay is ON, DC voltage recharge
defect
bc25 High/low Inverter input voltage
Inverter input voltage exceeds the unit limit and lasts for 4 s
(173V ~ 289V)
bc26 Inverter compressor activation failure
Inverter compressor error, causing initial activation failure
bc27 Inverter PSC/PFC Fault Error
Error by overcurrent at inverter input
bc28 Inverter DC Link high voltage error
Inverter DC voltage recharge, causing compressor OFF
bc29 Inverter compressor overcurrent
Inverter compressor activation failure or increase of CT
value
bc32
Excessive rise of inverter compressor discharge
temperature
Excessive rise of inverter compressor discharge
temperature, causing compressor OFF
bc34
Excessive rise of high pressure of inverter
compressor
Excessive rise of high pressure of inverter compressor,
causing compressor OFF
bc35
Excessive drop of low pressure of inverter
compressor
Excessive drop of low pressure of inverter compressor,
causing compressor OFF
bc36 Low pressure ratio error of inverter compressor
High pressure/low pressure ratio of inverter compressor is
maintained at below 1.8 for 3 min. or more
bc40 Inverter compressor CT sensor defect
Inverter compressor CT sensor defect
bc41
Inverter compressor discharge pipe temperature
sensor defect
Inverter compressor discharge temperature sensor
disconnection or short circuit
bc42 Low pressure sensor defect of inverter compressor
Low pressure sensor disconnection or short circuit of
inverter compressor
bc43 High pressure sensor defect of inverter compressor
High pressure sensor disconnection or short circuit of
inverter compressor
bc44 Inverter inside air temperature sensor defect
Inverter inside air temperature sensor disconnection or
short circuit
bc46
Inverter compressor suction pipe temperature
sensor defect
Inverter compressor suction temperature sensor
disconnection or short circuit
bc53
Communication error(indoor unit
→
outdoor unit
main PCB)
Outdoor unit does not receive signal from indoor unit
bc60 Inverter PCB EEPROM error
Inverter PCB EEPROM error
bc62 Excessive rise of inverter heatsink temperature
Inverter PCB heat generation, causing the rise of heatsink
temperature
bc65
Inverter heatsink temperature sensor
defect
Inverter heatsink temperature sensor disconnection or short
circuit
bc73 Overcurrent (Peak) detected at inverter input
Error by overcurrent detection at inverter input
Error
Code
Description
LED 1
(Red)
LED 2
(Green)
21
Inverter compressor IPM efect 2times
◑
1time
◑
Содержание THERMA V Series
Страница 16: ...16 GENERAL INFORMATION ENGLISH Parts and Dimensions Indoor unit External unit mm ...
Страница 21: ...21 GENERAL INFORMATION ENGLISH Wiring Diagram Indoor Unit ...
Страница 22: ...22 GENERAL INFORMATION ENGLISH Wiring Diagram Outdoor Unit ...
Страница 123: ......