41 Product Data
YA Chassis
PTAC
6RWU0-06A
Error
Code
Descriptions
Cause of Error
Check Point
22
CT 2 (Max CT)
• Over load operation (outdoor fan
constraint, screened, blocked)
• Input voltage error (low voltage)
Burned parts inside PCBA
• Check input voltage
• Check outdoor fan constraint /
screened / flow structure
• Check PCBA current sensor parts
23
DC Link Low Volt
• Input voltage error(low voltage)
• Reactor disconnection / Bad
fastening
• PCBA failure
• Check input voltage
• Reactor wire abnormal/open
• Check PCBA DC Link voltage sensor
part
26
DC Comp Position Error
• Poor connection of compressor
connector
• Compressor failure
• PCBA failure
• Check compressor wire open/short
• Check compressor insulation damage
27
PSC Fault
• Overload outdoor fan constraint,
screened, blocked)
• Bad Reactor fastening
• Burned PCBA internal parts (PSC
module)
• Check outdoor fan constraint /
screened / flow structure
• Check whether the reactor fastening is
bad
• Check for PCBA internal part burn
29
Comp Phase Over-Current
• Over load operation (indoor /
outdoor fan constraint, screened,
blocked, cycle issue)
• Refrigerant leak
• Disconnection / shot-circuit inside
compressor Compressor failure
• Burned parts inside PCBA (IPM
failure)
• Check indoor / outdoor fan constraint,
screened / flow structure
• Check refrigerant leakage
• Check compressor wire open/short
• Check compressor insulation damage
• Check if IPM burned
32
Inverter Compressor D-Pipe
Overheat
• Overload operation (outdoor fan
constraint, screened, blocked)
• Poor INV Comp Discharge sensor
• Refrigerant leakage (insufficient)
• EEV connector displaced / poor
EEV assembly
• Check outdoor fan constraint /
screened / flow structure
• Check refrigerant leakage
• Check if the sensor is normal
• Check the status of EEV assembly
36(38)
Refrigerant Leakage Detection
• Pipe break damage
• Bad connection of the pipe
• Pipe damage due to the corrosion
• Corrosion damage of the heat
exchanger
• Compressor damage (Crack)
• EEV body clogging
• Refrigerant shortage
• Defect of each thermostat
• Check the connection status of the pipe
• Check the pipe break / damage faulty
status
• Check the status of the indoor / outdoor
heat exchangers
• Check the compressor leakage
• Check EEV body clogging
• Check proper refrigerant quantity
• Check the quantity of the refrigerant
additionally charged
41
D-Pipe Sensor Error
• Sensor mis-wiring / Short
• Moisture penetration / Bad canning
sheath
• Check whether the sensor connector
was wired wrongly
• Bad canning sheath of the sensor wire /
Short part check
• Sensor faulty check
44
Outdoor Air Sensor Error
• The Outdoor Air Thermistor Error
occurs when the outdoor air
temperature is ≤ -35°C or ≥ 100°C.
• Check the error after change sensor.
• Check the insertion of PCB Connector
Wafer.
