49 Product Data
Control Device
PTAC
6RWU0-03A
• Electrical Controls
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"
Fault
Codes
Description of
Inspection
Cause of Error
Check Point
CH 01 Indoor Air
Thermistor Error
Indoor air temperature sensor fault is occurred
by indoor air temperature
≤
-35
℃
or the
indoor air temperature
≥
100°C
•
Check the error after change sensor.
•
Check the insertion of PCB Connector
Wafer.
CH 02 Indoor Coil
Thermistor Error
Indoor pipe temperature sensor fault is
occurred by indoor pipe temperature
≤
-35
℃
or the indoor pipe temperature
≥
100°C
•
Check the error after change sensor.
•
Check the insertion of PCB Connector
Wafer.
CH 07 Themostat
Wiring Error
During operating Remote mode, if PTAC receives
control commands that can not be drive from
Themostat, Themostat error occurred.
•
Check the connection with Themostat
comparing with manual.
CH 09 EEPROM Check
Sum Error
EEPROM Check Sum Error is occurred by
unmatching between the original checksum
and the calculated checksum.
•
Check the insertion of EEPROM.
•
Unplug and plug the power code
CH 10 Indoor Fan Error
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)
•
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.
CH 34 High Pressure
Switch Error
If opening high pressure switch for 65
miliseconds is generated more than 10 times
in 1 hour, High Pressure Switch Error
occurred.
•
Check the existence of short key between
CN-PRESS.
•
Check the insertion of PCB Connector
Wafer.
CH 44
Outdoor Air
Thermistor Error
(PTHP Only)
Outdoor air temperature sensor fault is
occurred by outdoor air temperature
≤
-35
℃
or the indoor air temperature
≥
100°C
•
Check the error after change sensor.
•
Check the insertion of PCB Connector
Wafer.
CH 45
Outdoor Coil
Thermistor Error
(PTHP Only)
Outdoor pipe temperature sensor fault is
occurred by outdoor pipe temperature
≤
-35
℃
or the outdoor pipe temperature
≥
100°C
•
Check the error after change sensor.
•
Check the insertion of PCB Connector
Wafer.
CH 67 Outdoor Fan
Error
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 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.
