Display = E1
Failure = EEPROM error
Display = E2
Failure = Zero crossing detection error
Display = E3
Failure = Indoor fan error
Display = E5
Failure = Room temp sensor open or short
Display = E6
Failure = Indoor coil sensor open or short
Display = EC
Failure = Refrigerant leak detected
2. Atlantic Midwall units
Display = E1
Failure = Outdoor tube sensor fault
Display = E2
Failure = Room temp sensor open or short
Display = E3
Failure = Indoor coil sensor open or short
Display = E5
Failure = Indoor fan fault
Display = E6
Failure = EEPROM error
Display = E7
Failure = External feedback fault - Check interconnecting wiring
Display = E8
Failure = Overheat detection / defrosting
3. Inverter midwall units
Display = E0
Failure = EEPROM error
Display = E1
Failure = Indoor and outdoor communication error
Display = E2
Failure = Zero crossing detection error
Display = E3
Failure = Indoor fan error
Display = E4
Failure = Indoor room temp sensor open or short
Display = E5
Failure = Indoor coil sensor open or short
Display = EC
Failure = Refrigerant leak detected
Display = F1
Failure = Outdoor temp sensor open or short
Display = F2
Failure = Condensor coil sensor open or short
Display = F3
Failure = Compressor discharge sensor open or short
Display = F4
Failure = Outdoor EEPROM error
Display = P0
Failure = IPM malfunction or IGBT over current
Display = P1
Failure = Over or under voltage protection
Display = P2
Failure = Temperature protection of compressor top (normally short of refrigerant)
Display = P4
Failure = Inverter compressor drive error
4. Fixed speed under ceiling/cassette/ducted units
Display = E1
Failure = EEPROM error
Display = E2
Failure = Zero crossing detection error
Display = E3
Failure = Indoor fan error
Display = E5
Failure = Room temp sensor open or short
Display = E6
Failure = Indoor coil sensor open or short
Display = EC
Failure = Refrigerant leak detected
Indoor
Oper.=
Time =
Def./Fan =
Alarm = Flash
Fault = Drain pump or float switch
Oper.=
Time = Flash
Def./Fan =
Alarm =
Fault = Return air sensor open or short
Oper.= Flash
Time =
Def./Fan =
Alarm =
Fault = Indoor coil sensor open or short
Oper.= Flash
Time = Flash
Def./Fan =
Alarm =
Fault = EEPROM error
Oper.=
Time =
Def./Fan = Flash
Alarm =
Fault = Outdoor coil sensor open or short
Oper.= Flash
Time = Flash
Def./Fan = Flash
Alarm = Flash
Fault = Electrical abnormality
Oper.= Flash
Time = Flash
Def./Fan =
Alarm = Flash
Fault = Over current protection
Outdoor
LED 1 = Flash
LED2 =
LED3 =
Fault = Phase rotation/phase missing error
LED 1 =
LED2 = Flash
LED3 =
Fault = HP swith open circuit
LED 1 =
LED2 =
LED3 = Flash
Fault = Overcurrent protection
LED 1 = Flash
LED2 = Flash
LED3 =
Fault = LP switch open circuit
LED 1 = Flash
LED2 = Flash
LED3 = Flash
Fault = High temperature of compressor discharge (Short of gas)
LED 1 = On
LED2 =
LED3 = On
Fault = Normal operation
LED 1 =
LED2 = Flash
LED3 = Flash
Fault = Outdoor ambient sensor open or short
5. Inverter under ceiling/cassette/ducted units
Display = E0
Failure = Communication between indoor and outdoor
Display = E1
Failure = Phase rotation/phase missing
Display = E2
Failure = Communication error between indoor unit and master unit
Display = E4
Failure = Outdoor temp sensor error
Display = E5
Failure = Compressor discharge temp sensor
Display = E8
Failure = Outdoor unit address error
Display = E9
Failure = Power volt error
Display = H0
Failure = Communication malfunction between IR341 and 780034
Display = H1
Failure = Communication between 0537 or 9177 and 780034
Display = H2
Failure = Quantity of outdoor unit decreases
Display = H3
Failure = Quantity of outdoor unit increases
Display = H4
Failure = P6 protection detected 3 times
Display = H5
Failure = P2 detected 3 times in 30 minutes
Display = H6
Failure = P4 detected 3 times in 100 minutes
Display = H7
Failure = Indoor unit decrease error
Display = H8
Failure = Discharge pressure sensor error
Display = H9
Failure = P9 detected 3 times in 30 minutes
Display = P0
Failure = Inverter compressor top temperature protection
Display = P1
Failure = HP protection
Display = P2
Failure = LP protection
Display = P3
Failure = Inverter compressor current protection
Display = P4
Failure = Compressor discharge temp protection (short of refrigerant)
Display = P5
Failure = Outdoor condensor high temp protection
Display = P6
Failure = Inverter module protection
Display = P7
Failure = Current protection No.1 Fixed compressor
Display = P8
Failure = Current protection No.2 Fixed compressor
Display = P9
Failure = Fan motor protection
Display = L0
Failure = DC inverter module protection
Display = L1
Failure = DC supply low voltage
Display = L2
Failure = DC supply high voltage protection
Display = L4
Failure = MEC Failure
Display = L8
Failure = Frequency protection
Display = L9
Failure = Frequency protection
6. MAC Cassette units
Display = E2
Failure = Room temp sensor failure
Display = E3
Failure = Coil temp sensor failure
Display = E4
Failure = Condensor sensor failure
Display = E5
Failure = Water pump temp sensor
Display = E6
Failure = Outdoor malfunction
Display = E7
Failure = EEPROM malfunction
Display = E8
Failure = Water-level alarm
7. Package units
Display = E0
Failure = Phase rotation/phase missing
Display = E1
Failure = Outdoor coil sensor in system A
Display = E2
Failure = Outdoor coil sensor in system B
Display = E5
Failure = Indoor coil sensor in system A
Display = E6
Failure = Indoor coil sensor in system B
Display = E9
Failure = Indoor temp sensor error
Display = EA
Failure = Outdoor ambient sensor error
Display = EB
Failure = Wire controller output error
Display = P0
Failure = Overcurrent protection in system A
Display = P1
Failure = Overcurrent protection in system B
Display = P2
Failure = Overcurrent protection for outdoor fan
Display = P3
Failure = Comprehensive protection for outdoor fan
Display = P4
Failure = Protection for HP/LP or discharge temp in system A
Display = P5
Failure = Protection for HP/LP or discharge temp in system B
Display = P6
Failure = HP protection initiated inT2 evaporator stops the outdoor unit fan
Display = P7
Failure = HP protection initiated inT2 evaporator stops the outdoor unit fan and compressor
Display = P8
Failure = Protection for condenser at high temp in system A
Display = P9
Failure = Protection for condenser at high temp in system B
Display = PC
Failure = Anti-freezing protection for evaporator in system A
Display = PD
Failure = Anti-freezing protection for evaporator in system B
Display = PF
Failure = Defrosting
8. Portable units
Display = HP
Failure = HP alarm
Display = Ft
Failure = Full tray or full tank
Display = Pf
Failure = Probe failure
Display = Lt
Failure = Low temp
Display = E1
Failure = Room temp sensor
Display = E2
Failure = Evaporator temp sensor
Display = E3
Failure = Condensor temp sensor
Display = P1
Failure = Bottom tray is full
8. Water heaters (Retro fit)
Display = E1
Failure = Phase reversal/phase missing error
Display = E2
Failure = Communication error between unit and wired control or sensor damaged
Display = E3
Failure = Outlet water temp sensor error
Display = E4
Failure = Water temp sensor failure in the water tank
Display = E5
Failure = Condensor temp sensor error
Display = E6
Failure = Outdoor ambient temp sensor error
Display = E7
Failure = Sensor failure at water pump outlet
Display = E9
Failure = T8 temp sensor error
Display = Ed
Failure = Sensor failure at double pipe refrigerant outlet
Display = P1
Failure = HP protection/air in system/pump not starting/no water
Display = P2
Failure = System current protection
Display = P4
Failure = Tt HP protection
Display = P5
Failure = Condenser HP protection
Display = P8
Failure = Protection for over temp at condenser outlet
Display = P9
Failure = Anti-freezing protection
Display = Pb
Failure = Anti-freezing protection
Display = H0
Failure = Indoor and outdoor units unmatched
Swimming pooll heaters
Display = E1
Failure = Phase rotation/phase missing
Display = E2
Failure = Outdoor unit and wire controller communication error
Display = E3
Failure = Outlet water temp sensor error
Display = E4
Failure = Inlet water temp sensor error
Display = E5
Failure = Evaporator pipe temp sensor error
Display = E7
Failure = Ambient temp sensor error
Display = E9
Failure = Water flow switch error
Display = EE
Failure = Discharge pipe temp sensor error
Display = P0
Failure = Discharge pressure over-high protection
Display = P1
Failure = Low pressure protection
Display = P4
Failure = Compressor over current protection
Display = P6
Failure = Evaporator over temp protection
Display = Pb
Failure = Anti-freeze protection
Display = Pf
Failure = Discharge temp protection (too high)
Integrated water heater
Display = E0
Failure = Error of sensor T5U
Display = E1
Failure = Error of sensor T5L
Display = E2
Failure = Tank and wired controller communication error
Display = E4
Failure = Condensor pipe temp sensor error
Display = E5
Failure = Outdoor ambient temp sensor error
Display = E6
Failure = Sensor Tp error
Display = E8
Failure = Electric leakage protection
Display = LA
Failure = Ambient temp is outside of range 5° _ 43°
Display = P0
Failure = Condensor pipe temp overflow protection
Display = P2
Failure = High dicharge temp
Display = P3
Failure = Open compressor circuit protection
Display = P4
Failure = Compressor overcurrent protection
Display = P8
Failure = Open upper e-heater circuit protection
Display = P9
Failure = Upper e-heater overloaded protection
Display = Pa
Failure = Open lower e-heater circuit protection
Display = Pb
Failure = Lower e-heater overloaded protection
Commercial water heater
Display = E1
Failure = Phase rotation/phase missing
Display = E2
Failure = Communication failure between wired remote and main unit
Display = E3
Failure = Outlet water temp sensor failure
Display = E4
Failure = Water temp sensor in the water tank failure
Display = E5
Failure = Condenser temp sensor failure
Display = E6
Failure = Outdoor ambient temp sensor failure
Display = E7
Failure = Electric heating pipe temp sensor failure
Display = Ec
Failure = Water inlet temp sensor error
Display = Eb
Failure = Exhaust temp sensor error (TP temp)
Display = P0
Failure = System LP protection
Display = P1
Failure = System HP protection (deficient circulating pump/pump faulty also possible)
Display = P2
Failure = Current protection for system 2
Display = P3
Failure = Current protection for system 1
Display = P8
Failure = Protection for excessive high outlet water temp
Display = Pb
Failure = Anti-freezing protection
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