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Error code reference
Sanyo Air Conditioner Error Codes
51 error codes documented with diagnostic procedures.
Have your model number? Get codes specific to your unit.
C5Jumper connection malfunction protection-no jumper on controller, installed improperly…E1System high pressure protection-excess refrigerant, dirty outdoor heat exchanger, or…E2Anti-freeze protection of indoor unit-refrigerant leakage, indoor unit air flow blocked…E4Compressor discharge high temperature protection-low refrigerant, capillary blocked, or…E5Overcurrent / low voltage protection-low or unstable supply voltage, abnormal ambient…E6Communication malfunction between indoor and outdoor units-communication line failure…E8Anti-high temperature protection / overload protection of compressor.EEEEPROM read/write malfunction-the EEPROM on the outdoor PCB mainboard cannot read or…EUIPM temperature high limit causing compressor speed reduction.F0Lack of Freon or block protection.F1Indoor ambient temperature sensor open or short circuit (continuously measured failure…F2Indoor evaporator tube temperature sensor open or short circuit (continuously measured…F3Outdoor ambient temperature sensor open or short circuit (continuously measured failure…F4Outdoor condenser tube temperature sensor open or short circuit (continuously measured…F5Outdoor compressor discharge temperature sensor open or short circuit (continuously…F6Overload limit causing compressor speed reduction.F8Overcurrent causing compressor speed reduction.F9Compressor discharge temperature high causing compressor speed reduction.FHIndoor freeze protection-indoor unit return air blocked or fan speed is too low.H0Heating high temperature protection.H1Automatic defrosting-normal operation indicator for heat pump models.H3Compressor overload protection-compressor overheat, low refrigerant, or capillary blocked.H4System overload protection-abnormal ambient temperature or heat exchanger blocked.H5IPM module protection-IPM module over temperature, low voltage, or silica grease problem.H6Indoor unit DC fan motor does not operate-motor control terminal contact problem, fan…H7Compressor speed reduction protection.HCPFC overcurrent malfunction / protection-overcurrent on PFC circuit.L3Outdoor fan module protection-outdoor fan terminals loose, motor damaged, or fan motor…L9High power / over power protection-system power is too high.LCCompressor start-up failure.LPIndoor and outdoor unit match protection-units are not matched.P0Minimum cooling and heating operational status indicator.P1Nominal cooling and heating operational status indicator.P2Maximum cooling and heating operational status indicator.P3Medium cooling and heating operational status indicator.P5Compressor current too high-compressor terminal loose (resistance should be lower than 1…P7Temperature sensor malfunction of carbon fin.P8Module over temperature protection.PHHigh DC bus voltage protection-DC side voltage is too high.PLLow DC bus voltage protection-DC side voltage is too low or supply voltage below 150VAC.PUCapacitor charge malfunction.U1Phase current detection malfunction of compressor.U3Low DC bus voltage-supply voltage is not stable.U5Current detection malfunction of complete unit.U7Four-way valve malfunction-supply voltage lower than 175VAC, valve terminal loose/broken…U8Indoor fan speed detection circuit malfunction-abnormal speed detection circuit on…U9System current too high / outdoor unit error.UASetting error; indoor and outdoor unit abnormal (not matched).UFZero passage abnormal.UHNo motor of outdoor unit feedback.UUDC over current.
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Common questions
How do I find the error code on my Sanyo Air Conditioner?
Most Sanyo air conditioners show the code directly on the control panel display. If your model has no display, it can be read by entering diagnostic mode with the key sequence for your model. The full procedures include model-specific instructions for reading codes.
Are these codes specific to my model?
The codes here apply broadly to Sanyo air conditioners. Meanings and diagnostic steps can vary by model and production year, so enter your model number for model-specific information and procedures.
What do I do if my code is not listed?
Some codes are model-specific or only appear in diagnostic mode. Enter your model number to get codes specific to your unit, or contact us. We update the database continuously from manufacturer service documentation.
How much does it cost to access the full diagnostic procedures?
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