LG PTAC Type Product Data Book page 49

Control Device
• Electrical Controls
Fault Description of
Codes Inspection
Indoor Air
CH 01
Thermistor Error
Indoor Coil
CH 02
Thermistor Error
Themostat
CH 07
Wiring Error
EEPROM Check
CH 09
Sum Error
CH 10 Indoor Fan Error
High Pressure
CH 34
Switch Error
Outdoor Air
CH 44 Thermistor Error
(PTHP Only)
Outdoor Coil
CH 45 Thermistor Error
(PTHP Only)
Outdoor Fan
CH 67
Error
Note:
• Overheating Protection
This feature prevents melting of unit by electrical heater located inside of the unit at the remote mode (when the unit is
connected with wall thermostat). LED on the control panel displays "OP"
• Freeze Protection
This feature prevents freezing of room at low temperature. LED on the control panel displays "FP"
49
Cause of Error
Indoor air temperature sensor fault is occurred
by indoor air temperature ≤ -35
indoor air temperature ≥ 100°C
Indoor pipe temperature sensor fault is
occurred by indoor pipe temperature ≤ -35
or the indoor pipe temperature ≥ 100°C
During operating Remote mode, if PTAC receives
control commands that can not be drive from
Themostat, Themostat error occurred.
EEPROM Check Sum Error is occurred by
unmatching between the original checksum
and the calculated checksum.
Indoor fan lock error is occurred by no
feedback signal from Hall sensor located
BLDC Motor in 50 seconds delay time or
feedback signal lower than 50RPM. (Applied
in model using BLDC Motor)
If opening high pressure switch for 65
miliseconds is generated more than 10 times
in 1 hour, High Pressure Switch Error
occurred.
Outdoor air temperature sensor fault is
occurred by outdoor air temperature ≤ -35
or the indoor air temperature ≥ 100°C
Outdoor pipe temperature sensor fault is
occurred by outdoor pipe temperature ≤ -35
or the outdoor pipe temperature ≥ 100°C
Outdoor fan lock error is occurred by no
feedback signal from Hall sensor located
BLDC Motor in 50 seconds delay time or
feedback signal lower than 50RPM. (Applied
in model using BLDC Motor)
• Check the error after change sensor.
or the
• Check the insertion of PCB Connector
Wafer.
• Check the error after change sensor.
• Check the insertion of PCB Connector
Wafer.
• Check the connection with Themostat
comparing with manual.
• Check the insertion of EEPROM.
• Unplug and plug the power code
• Check the insertion of BLDC Connector.
• Check whether the output voltage between the
two terminals 4-5pins in CN-MOTOR-ODF is 15V.
• Check whether the output voltage between
the two terminals 4-6pins is over 2V.
• Check whether the output voltage between
the two terminals 4-7pins is exist or not.
• Check the existence of short key between
CN-PRESS.
• Check the insertion of PCB Connector
Wafer.
• Check the error after change sensor.
• Check the insertion of PCB Connector
Wafer.
• Check the error after change sensor.
• Check the insertion of PCB Connector
Wafer.
• Check the insertion of BLDC Connector.
• Check whether the output voltage between the two
terminals 4-5pins in CN-MOTOR-ODF is 15V.
• Check whether the output voltage between
the two terminals 4-6pins is over 2V.
• Check whether the output voltage between
the two terminals 4-7pins is exist or not.
PTAC
6RWU0-03A
Check Point
Product Data