Troubleshooting Guide
Table Of Contents
For 2015 or earlier Concealed Duct / Cassette / Floor Ceiling Models:
RB012GMFI16HLD, RB018GMFI16HLD (2015 and earlier)
CB012GMFI16HLD, CB018GMFI16HLD (2015 and earlier)
UB012GMFI16HLD, UB018GMFI16HLD (2015 and earlier)
Operation Timer
De-
frost
Alar
m
Failure
Display
ODU Error
code
★
X X X
Indoor room temperature sensor (T1
) malfunction
E0 ——
X X
★
X
Evaporator coil temperature sensor
(T2) malfunction
E1 ——
X
★
X X
Communication malfunction
between indoor and outdoor units
E2 E2
X X X
★
Water-level alarm malfunction E3 ——
★ ★
X X
Indoor unit EEPROM parameter
error
E4 ——
★
X X
Inverter module (IPM) malfunction E5 P6
★
X X
Outdoor temperature sensor(coil
sensor T3 or ambient temperature
sensor T4) malfunction or Outdoor
unit EEPROM parameter error
E6 E0,E4
★
★
X
Outdoor fan speed has been out of
control
E7 E8
★
X
Indoor fan speed has been out of
control
F5 ——
★
X
Over-voltage or under-voltage
protection
P0 E5
★
X
X
Compressor top high temperature
protection (OLP)
P1 P0
★ ★ ★
X Current overload protection P2 P3
★ ◎
X X Compressor drive malfunction P4 ——
★
X
Indoor units mode conflict P5 ——
★ flash at 2.5Hz, light, X extinguished,,◎flashat0.5Hz