90 Sanyo air conditioner error codes + troubleshooting

Table of Contents

Sanyo air conditioner error code EE

Possible cause: Indoor machine EE fault.

Sanyo air conditioner error code E0

Possible cause: Outdoor EE fault.

Sanyo air conditioner error code E01

Possible cause: Indoor fan fault.

Sanyo air conditioner error code E02

Possible cause: Serial comms error, mis-setting, RC is detecting error signal from IU, error in transmitting serial comm signal.

Sanyo air conditioner error code E03

Possible cause: IU is detecting error signal from remote controller (and system controller)rror signal from IU, error in transmitting serial comm signal.

Sanyo air conditioner error code E04

Possible cause: IU is detecting error signalled from OU, error in receiving serial comms signal.

Sanyo air conditioner error code E05

Possible cause: IU is detecting error signalled from OU, error in transmitting serial comms signal.

Sanyo air conditioner error code E06

Possible cause: OU is detecting error signalled from IU, error in receiving serial comms signal (inc unit qty verification failure).

Sanyo air conditioner error code E07

Possible cause: OU is detecting error signalled from IU, error in transmitting serial comms signal.

Sanyo air conditioner error code E08

Possible cause: Improper setting of IU or RC,IU address is duplicated.

Sanyo air conditioner error code E09

Possible cause: Improper setting of IU or RC, remote controller setting is duplicated.

Sanyo air conditioner error code E10

Possible cause: IU is detecting error signalled from signal option, error in transmitting serial comms signal.

Sanyo air conditioner error code E11

Possible cause: IU is detecting error signalled from signal option, error in receiving comms signal.

Sanyo air conditioner error code E12

Possible cause: IU is detecting error signalled from signal option, because auto address setting is in process in a different system, auto address is setting start is prohibited.

Sanyo air conditioner error code E14

Possible cause: Setting error, main unit duplication in simultaneous-operation multi control (detected by outdoor unit).

Sanyo air conditioner error code E15

Possible cause: Automatic address setting failed, IU capacity too low.

Sanyo air conditioner error code E16

Possible cause: Automatic address setting failed, IU capacity too high.

Sanyo air conditioner error code E17

Possible cause: An IU detected trouble in the signal from another IU, error in transmitting serial comms signal.

Sanyo air conditioner error code E18

Possible cause: An IU detected trouble in the signal from another IU, error in receiving serial comms signal.

Sanyo air conditioner error code E20

Possible cause: Automatic address setting failed, no signal received from another IU.

Sanyo air conditioner error code E24

Possible cause: Auto address error, Main OU is detecting error signal from sub OU.

Sanyo air conditioner error code E25

Possible cause: Auto address error, of OU address setting.

Sanyo air conditioner error code E26

Possible cause: Auto address error, the number of connected main and sub OU do not correspond to the number set at the main OU PCB.

Sanyo air conditioner error code E29

Possible cause: Auto address error, sub OU in receiving serial comm signal from main OU.

Sanyo air conditioner error code F01

Possible cause: Thermistor fault, indoor coil temp. sensor (E1).

Sanyo air conditioner error code F02

Possible cause: Thermistor fault, indoor coil temp. sensor (E2).

Sanyo air conditioner error code F03

Possible cause: Thermistor fault, indoor coil temp. sensor (E3).

Sanyo air conditioner error code F04

Possible cause: Outdoor thermistor open circuit, discharge TD1.

Sanyo air conditioner error code F05

Possible cause: Outdoor thermistor open circuit, discharge TD2.

Sanyo air conditioner error code F06

Possible cause: Outdoor thermistor open circuit, heat exchanger temperature C1.

Sanyo air conditioner error code F07

Possible cause: Outdoor thermistor open circuit, heat exchanger temperature C2.

Sanyo air conditioner error code F08

Possible cause: Thermistor fault, outdoor air temp. sensor (air temp).

Sanyo air conditioner error code F09

Possible cause: Outdoor DC fan fault.

Sanyo air conditioner error code F10

Possible cause: Thermistor fault, indoor suction air (room) temp sensor (TA).

Sanyo air conditioner error code F11

Possible cause: Thermistor fault, indoor discharge air temp. sensor (BL).

Sanyo air conditioner error code F12

Possible cause: Outdoor thermistor open circuit, intake temperature TS.

Sanyo air conditioner error code F16

Possible cause: Thermistor fault, outdoor high pressure senso.

Sanyo air conditioner error code F17

Possible cause: Thermistor fault, outdoor unit low pressure sensor.

Sanyo air conditioner error code F22

Possible cause: Thermistor fault, outdoor unit compressor 3 (constant speed) discharge temp sensor.

Sanyo air conditioner error code F23

Possible cause: Thermistor fault, outdoor No. 2 coil gas temp (EXG2).

Sanyo air conditioner error code F24

Possible cause: Thermistor fault, outdoor No. 2 coil liquid temp. sensor (EXL2).

Sanyo air conditioner error code F25

Possible cause: Thermistor fault, outdoor unit heat exchanger 3 gas temp sensor.

Sanyo air conditioner error code F26

Possible cause: Thermistor fault, outdoor unit heat exchanger 3 liquid temp sensor.

Sanyo air conditioner error code F29

Possible cause: Indoor EEPROM error.

Sanyo air conditioner error code F31

Possible cause: Outdoor EEPROM error.

Sanyo air conditioner error code H01

Possible cause: AC1 compressor protection, overload current was detected.

Sanyo air conditioner error code H02

Possible cause: AC1 compressor protection, lock current was detected.

Sanyo air conditioner error code H03

Possible cause: AC1 compressor protection, no current was detected when the compressor was ON (CT1 circuit failure).

Sanyo air conditioner error code H05

Possible cause: The compressor discharge sensor has become disconnected (detected only for the AC1 compressor).

Sanyo air conditioner error code H06

Possible cause: Low pressure switch activated on AC1, AC2 compressor.

Sanyo air conditioner error code H07

Possible cause: Protective device for compressor is activated, low oil level.

Sanyo air conditioner error code H08

Possible cause: Protective device for compressor is activated, compressor no. 1 oil sensor fault (disconnection, etc).

Sanyo air conditioner error code H11

Possible cause: AC2 compressor protection, overload current was detected.

Sanyo air conditioner error code H12

Possible cause: AC2 compressor protection, lock current was detected.

Sanyo air conditioner error code H13

Possible cause: AC2 compressor protection, no current was detected when the compressor was ON (CT2 circuit failure.

Sanyo air conditioner error code H15

Possible cause: The AC2 compressor discharge sensor has become disconnected.

Sanyo air conditioner error code H21

Possible cause: Outdoor protective device, overload current detected on compressor 3 (constant speed).

Sanyo air conditioner error code H22

Possible cause: Outdoor protective device, lock current detected on compressor 3 (constant speed).

Sanyo air conditioner error code H23

Possible cause: Outdoor protective device, no current detected when compressor 3 (constant speed) was on.

Sanyo air conditioner error code H25

Possible cause: Outdoor protective device, discharge temp. sensor trouble, Compressor 3 (constant speed).

Sanyo air conditioner error code H27

Possible cause: Protective device for compressor is activated, compressor no. 2 oil sensor fault (disconnection, etc).

Sanyo air conditioner error code H28

Possible cause: Connection failure of oil detection sensor, compressor no 3 (contestant speed).

Sanyo air conditioner error code H31

Possible cause: Outdoor unit protection IPM trip (IPM current or temperature) HIC Alarm trouble.

Sanyo air conditioner error code L02

Possible cause: Mis-setting error, IU/OU type mismatch.

Sanyo air conditioner error code L03

Possible cause: Mis-setting error, main unit duplication in group control (detected by IU).

Sanyo air conditioner error code L04

Possible cause: Mis-setting error, OU address duplication (system address).

Sanyo air conditioner error code L05

Possible cause: Improper setting, there are 2 or more IU RC which have operation mode priority in refrigeration circuit, priority set remote control.

Sanyo air conditioner error code L06

Possible cause: Improper setting, there are 2 or more IU RC which have operation mode priority in refrigeration circuit, non-priority set remote control.

Sanyo air conditioner error code L07

Possible cause: Mis-setting error, group wiring connected for independent IU.

Sanyo air conditioner error code L08

Possible cause: Mis-setting error, IU address not set or group not set.

Sanyo air conditioner error code L09

Possible cause: Mis-setting error, IU capacity not set.

Sanyo air conditioner error code L10

Possible cause: Mis-setting error, OU capacity not set or setting error.

Sanyo air conditioner error code L11

Possible cause: Mis-setting error, miswiring in group control wiring.

Sanyo air conditioner error code L13

Possible cause: Mis-setting error, IU type setting error.

Sanyo air conditioner error code L17

Possible cause: Mis-match connection of outdoor units which have a different kind of refrigerant.

Sanyo air conditioner error code L18

Possible cause: 4-way valve operation failure.

Sanyo air conditioner error code P01

Possible cause: Indoor fan protective thermostat.

Sanyo air conditioner error code P02

Possible cause: The AC compressor or AC1, AC2 compressor internal protection thermostat was activated: or low voltage was detected.

Sanyo air conditioner error code P03

Possible cause: Discharge temperature trouble on outdoor.

Sanyo air conditioner error code P04

Possible cause: High pressure sensor operation on AC, AC1 or AC2 compressor.

Sanyo air conditioner error code P05

Possible cause: Open phase detected, AC power trouble.

Sanyo air conditioner error code P09

Possible cause: Ceiling panel connection failure.

Sanyo air conditioner error code P10

Possible cause: Indoor float switch.

Sanyo air conditioner error code P12

Possible cause: Indoor fan overload (check for packaging on new cass install).

Sanyo air conditioner error code P16

Possible cause: Compressor running failure resulting from missing phase in the compressor wiring etc (start failure not caused by IPM or no GAS) negative (defective) N phase.

Sanyo air conditioner error code P17

Possible cause: Incorrect discharge temperature (comp no 2).

Sanyo air conditioner error code P22

Possible cause: Outdoor unit fan (missing phase in the HALL IC or other problem) causing the fan to lock.

Sanyo air conditioner error code P26

Possible cause: Overcurrent at time of compressor runs more than 80hz (DCCT secondary current or ACCT primary current at a time other than when IPM has tripped).

Sanyo air conditioner error code P29

Possible cause: Inverter for compressor is unusual (DC compressor does not operate).

Sanyo air conditioner error code P31

Possible cause: A flexible control error occurred.

Sanyo air conditioner troubleshooting

Sanyo air conditioner does not operate

Possible causes:

1. Circuit breaker trips (or fuse blows)

When the circuit breaker is set to ON, it is tripped soon. (Resetting is not possible.)

  • There is a possibility of ground fault.
  • Check insulation resistance.

If resistance value is 2MΩ or less, insulation is defective (“NO”).

Circuit breaker trips in several minutes after turning the air conditioner on.

2. Neither indoor nor outdoor unit runs

Power is not supplied.

Check “OPERATION selector” switch in the indoor unit.

Check remote control unit.

Check fuse on the indoor PCB Ass’y.

Check TIMER on the remote control unit

3. Only outdoor unit does not run

Check setting temperature.

Check PCB Ass’y in either indoor or outdoor unit.

4. Only indoor unit does not run

Sanyo air conditioner indoor fan does not run

Sanyo air conditioner flap motor does not run

Measure resistance of flap motor winding.

Sanyo air conditioner outdoor fan speed control does not work properly

Check thermostat in outdoor unit.

Sanyo air conditioner outdoor fan does not run

Sanyo air conditioner compressor does not run

Sanyo air conditioner does not switch from HEAT to COOL (or COOL to HEAT)

Sanyo air conditioner poor cooling or heating

Sanyo air conditioner excessive cooling or heating

Sanyo air conditioner indoor coil temp. thermistor (TH1) is defective

Operation lamp on the front side of the indoor unit will flash on and off when the indoor coil thermistor is defective. At the same time the outdoor unit will stop. Indoor unit will operate only for ventilation

Sanyo air conditioner room temp thermistor (TH2) is defective

Open:

When thermistor opens, the air conditioner will be in the following conditions as the controller tries to detect extremely low room temperature.

  • In Cooling mode: The air conditioner soon stops and will not start again. (Thermo.OFF) Neither outdoor fan nor compressor runs.
  • In Heating mode: The air conditioner continues to operate (Thermo.ON). Both the outdoor fan and compressor do not stop. As a result, the room becomes too warm.

Short:

When thermistor is short, the air conditioner will be in the following conditions as the controller tries to detect extremely high room temperature.

  • In Cooling mode: The air conditioner continues to operate (Thermo.ON). Both the outdoor fan and compressor do not stop. As a result, the room becomes too cold.
  • In Heating mode: The air conditioner soon stops and will not start again (Thermo.OFF). Neither outdoor fan nor compressor runs.

Definition of Open or Short Circuit of Sensor (Thermistor):

Open: A lead wire is broken or disconnected or the circuit inside the temperature sensor is open.

Short: The protective cover of a lead wire has been damaged, and the exposed wire is touching another metal part, or both lead wires have become exposed and are touching each other. Alternatively, the circuit inside the temperature sensor is closed.

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