Wednesday, July 10, 2019

ALLIANCE ERROR CODES


1. Fixed speed Vertu midwall 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

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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Asa on October 17, 2020 at 6:13 PM said...

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My Alliance midwall split unit is displaying P6,i checked all comms and power connections still nothing,what might be the problem

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