R3250Hz Universal Outdoor Series Technical Manual
45
GD Chigo Heating & Ventilation Equipment Co., Ltd.
12. Trouble shooting
12.1 Fault codes table
Table 1: Indoor unit (digital display)
When unit is standby after first time power on, running light flash slowly, after operation, all the lights off
when the unit is off or standby.
When unit is running, running light flashes, digital tube shows setting temperature in cooling and heating
mode, digital tube shows indoor temperature in fan only mode; defrost light turns on when defrosting, timer
light turns on when in timer mode.
Display
Error description
Display
Error description
E0
Phase protection
F0
(reserve)
E1
Communication error between
outdoor unit and indoor unit
F1
(reserve)
E2
Indoor room temperature (T1)
sensor error
F2
(reserve)
E3
Indoor coil middle temperature (T2)
sensor error
F3
Outdoor unit current error cannot
recover
Display P3 error for 3 times within
60 minutes
E4
Indoor coil outlet temperature
(T2B) sensor error
F4
Outdoor temperature (T4) sensor
error
E5
Outdoor unit error
F5
(reserve)
E6
Zero speed protection
F6
Outdoor unit condenser outlet
(T3) sensor error
E7
EERPOM error
F7
Secondary side current
protection
E8
Indoor fan motor speed lose
protection
F8
Heat T2 temp. protection
E9
Wired controller communication
error
F9
Outdoor unit voltage error
EE
Water level alarm error
EF
EF(Reserve)
Table 2: Indoor unit (LED display)
Error description
Display
content
Indoor unit waiting for address assignment
LED timer and running flash together
(reserve)
LED timer, running, protection, defrost
flash together
Communication error between outdoor unit and indoor unit LED timer flash quickly
Fan motor stall protection
LED timer flash slowly
Indoor unit temperature sensor error
LED run flash
Water level alarm
LED protection flash
(reserve)
LED defrost flash
Outdoor unit error
LED protection flash slowly
EEPROM error
LED defrost flash slowly
