Sanyo Air Conditioner Error Codes



Since the indications cover various units, the corresponding parts listed below may not be present in some models.

Sanyo Air Conditioner Error Codes
Sanyo Air Conditioner Error Codes
Error CodeDiagnostics items
S01Room temperature sensor failure
S02Indoor heat exchanger sensor failure
S03Humidity sensor failure
S04Compressor temperature sensor failure
S05Outdoor heat exchanger sensor failure
S06Outdoor air temperature sensor failure
S07Outdoor electrical current detection faillure
E01lndoor/outdoor communications failure
E02
  • HIC circuit failure

  • Power Tr (transistor) circuit failure
  • E03Outdoor unit external ROM (OTP data) failure
    E04Peak current cut Off
    E05
  • PAM circuit failure

  • Active circuit failure
  • E06Compressor discharge overheat prevention activated
    E07Indoor fan operating failure
    E08
  • 4-way valve switching failure

  • Indoor zero-cross failure
  • E09No-reirigerant protection
    E10DC compressor drive circuit failure
    E11Outdoor fan operating failure
    E12
  • Outdoor system communications failure

  • OLR operation

  • Outdoor power supply open phase

  • Outdoor coil freezing
  • E13Freeze-prevention operation activated



    Sanyo Fault Codes and Possible Cause of Malfunction

    Sanyo AC Fault Codes
    Error CodesPossible Cause of Malfunction
    E01serial comms error, mis-setting, RC is detecting error signal from IU, outdoor system address, indoor system address.
    E02serial comms error, mis-setting, RC is detecting error signal from IU, error in transmitting serial comm signal
    E03IU is detecting error signal from remote controller (and system controller)
    E04IU is detecting error signalled from OU, error in receiving serial comms signal
    E05IU is detecting error signalled from OU, error in transmitting serial comms signal
    E06OU is detecting error signalled from IU, error in receiving serial comms signal (inc unit qty verification failure)
    E07OU is detecting error signalled from IU, error in transmitting serial comms signal
    E08improper setting of IU or RC,IU address is duplicated
    E09improper setting of IU or RC, remote controller setting is duplicated
    E10IU is detecting error signalled from signal option, error in transmitting serial comms signal
    E11IU is detecting error signalled from signal option, error in receiving comms signal
    E12IU is detecting error signalled from signal option, because auto address setting is in process in a different system.
    E14setting error, main unit duplication in simultaneous-operation multi control (detected by outdoor unit)
    E15automatic address setting failed, IU capacity too low
    E16automatic address setting failed, IU capacity too high
    E17an IU detected trouble in the signal from another IU, error in transmitting serial comms signal
    E18an IU detected trouble in the signal from another IU, error in receiving serial comms signal
    E20automatic address setting failed, no signal received from another IU
    E24Auto address error, Main OU is detecting error signal from sub OU
    E25Auto address error, of OU address setting
    E26Auto address error, the number of connected main and sub OU do not correspond to the number set at the main OU PCB
    E29auto address error, sub OU in receiving serial comm signal from main OU
    F01thermistor fault, indoor coil temp. sensor (E1)
    F02thermistor fault, indoor coil temp. sensor (E2)
    F03thermistor fault, indoor coil temp. sensor (E3)
    F04Outdoor thermistor open circuit, discharge TD1
    F05Outdoor thermistor open circuit, discharge TD2
    F06Outdoor thermistor open circuit, heat exchanger temperature C1
    F07Outdoor thermistor open circuit, heat exchanger temperature C2
    F08thermistor fault, outdoor air temp. sensor (air temp)
    F10thermistor fault, indoor suction air (room) temp sensor (TA)
    F11thermistor fault, indoor discharge air temp. sensor (BL)
    F12Outdoor thermistor open circuit, intake temperature TS
    F16thermistor fault, outdoor high pressure sensor
    F17thermistor fault, outdoor unit low pressure sensor
    F22thermistor fault, outdoor unit compressor 3 (constant speed) discharge temp sensor
    F23thermistor fault, outdoor No. 2 coil gas temp (EXG2)
    F24thermistor fault, outdoor No. 2 coil liquid temp. sensor (EXL2)
    F25thermistor fault, outdoor unit heat exchanger 3 gas temp. sensor
    F26thermistor fault, outdoor unit heat exchanger 3 liquid temp. sensor
    F29indoor EEPROM error
    F31outdoor EEPROM error
    H01AC1 compressor protection, overload current was detected
    H02AC1 compressor protection, lock current was detected
    H03AC1 compressor protection, no current was detected when the compressor was ON (CT1 circuit failure)
    H05the compressor discharge sensor has become disconnected (detected only for the AC1 compressor)
    H06low pressure switch activated on AC1, AC2 compressor
    H07protective device for compressor is activated, low oil level
    H08protective device for compressor is activated, compressor no. 1 oil sensor fault (disconnection, etc)
    H11AC2 compressor protection, overload current was detected
    H12AC2 compressor protection, lock current was detected
    H13AC2 compressor protection, no current was detected when the compressor was ON (CT2 circuit failure)
    H15the AC2 compressor discharge sensor has become disconnected
    H21outdoor protective device, overload current detected on compressor 3 (constant speed)
    H22outdoor protective device, lock current detected on compressor 3 (constant speed)
    H23outdoor protective device, no current detected when compressor 3 (constant speed) was on
    H25outdoor protective device, discharge temp. sensor trouble, Compressor 3 (constant speed)
    H27protective device for compressor is activated, compressor no. 2 oil sensor fault (disconnection, etc)
    H28connection failure of oil detection sensor, compressor no 3 (contestant speed)
    H31outdoor unit protection IPM trip (IPM current or temperature) HIC Alarm trouble
    L02mis-setting error, IU/OU type mismatch
    L03mis-setting error, main unit duplication in group control (detected by IU)
    L04mis-setting error, OU address duplication (system address)
    L05improper setting, there are 2 or more IU RC which have operation mode priority in refrigeration circuit.
    L06improper setting, there are 2 or more IU RC which have operation mode priority in refrigeration circuit.
    L07mis-setting error, group wiring connected for independent IU
    L08mis-setting error, IU address not set or group not set
    L09mis-setting error, IU capacity not set
    L10mis-setting error, OU capacity not set or setting error
    L11mis-setting error, miswiring in group control wiring
    L13mis-setting error, IU type setting error
    L17mis-match connection of outdoor units which have a different kind of refrigerant
    L184-way valve operation failure
    P01indoor fan protective thermostat
    P02the AC compressor or AC1, AC2 compressor internal protection thermostat was activated: or low voltage was detected
    P03discharge temperature trouble on outdoor
    P04High pressure sensor operation on AC, AC1 or AC2 compressor
    P05open phase detected, AC power trouble
    P09ceiling panel connection failure
    P10indoor float switch
    P12indoor fan overload (check for packaging on new cass install)
    P16compressor running failure resulting from missing phase in the compressor wiring etc
    P17incorrect discharge temperature (comp no 2)
    P22outdoor unit fan (missing phase in the HALL IC or other problem) causing the fan to lock
    P26overcurrent at time of compressor runs more than 80hz (DCCT secondary current or ACCT primary current at a time other than when IPM has tripped
    P29inverter for compressor is unusual (DC compressor does not operate)
    P31a flexible control error occurred

    Sanyo Air Conditioner Troubleshooting

    If your air conditioner does not work properly, first check the following points before requesting service. If it still does not work properly, contact your dealer or service center.

    1-Trouble




    Air conditioner does not run at all.

    Possible Cause

    1. Power failure.

    2. Leakage breaker tripped.

    3. Line voltage is too low.

    4. ON/OFF operation button is OFF.

    5. Batteries in remote control unit have run down.

    Remedy

    1. Restore power.

    2. Contact service center.

    3. Consult with electrician or dealer.




    4. Press the button again.

    5. Replace batteries.

    2-Trouble

    Compressor runs but soon stops

    Possible Cause

    1. Obstruction in front of condenser coil.

    Remedy

    1. Remove obstruction.

    3-Trouble

    Poor cooling performance.

    Possible Cause

    1. Dirty or clogged air filter.

    2. Heat source (cooker, heater, or electrical appliance) or many people in room.

    3. Doors and/or windows are open.

    4. Obstacle near air intake or air discharge port.



    5. Thermostat is set too high.

    Remedy

    1. Clean the air filter to improve the air flow.

    2. Eliminate heat source if possible.

    3. Shut them to keep the heat out.

    4. Remove it to ensure good air flow.

    5. Set the temperature lower.

    4-Trouble

    OPERATION lamp blinks and air conditioner does not operate.

    Possible Cause

    Trouble in system.

    Remedy

    Contact service center.

    Sanyo Air Conditioner
    Sanyo Air Conditioner

    5-Trouble

    Clicking sound is heard from the air conditioner.

    Possible Cause

    In heating or cooling operation, any plastic parts may expand or shrink due to a sudden temperature change. In this event, a clicking sound may occur.

    Remedy

    This is normal, and the sound will soon disappear.

    6-Trouble

    OPERATION lamp lights but outdoor unit will not run.

    Possible Cause

    The use of cellular phones near the air conditioner may cause disturbance to its normal operation.

    Remedy

    1. Turn off the power then restart the air conditioner after a while.
    2. Consult your dealer.
    Sanyo AC Remote Control Unit (Display)
    Sanyo AC Remote Control Unit (Display)

    Sanyo Split Air Conditioner Troubleshooting PDF






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