Skip to main content
Sanyo Air Conditioner Error Codes
51 error codes for Sanyo air conditioner models. Each links to the full diagnostic procedure from the service manual.
CodeDescription
C5Jumper connection malfunction protectionE1System high pressure protectionE2Anti-freeze protection of indoor unitE4Compressor discharge high temperature protectionE5Overcurrent / low voltage protectionE6Communication malfunction between indoor and outdoor unitsE8Anti-high temperature protection / overload protection of compressor.EEEEPROM read/write malfunctionEUIPM temperature high limit causing compressor speed reduction.F0Lack of Freon or block protection.F1Indoor ambient temperature sensor open or short circuit (continuously measured…F2Indoor evaporator tube temperature sensor open or short circuit (continuously…F3Outdoor ambient temperature sensor open or short circuit (continuously measured…F4Outdoor condenser tube temperature sensor open or short circuit (continuously…F5Outdoor compressor discharge temperature sensor open or short circuit…F6Overload limit causing compressor speed reduction.F8Overcurrent causing compressor speed reduction.F9Compressor discharge temperature high causing compressor speed reduction.FHIndoor freeze protectionH0Heating high temperature protection.MyPros+ Max
Get the full diagnostic procedure for any Sanyo air conditioner error code.
- Step-by-step tests with expected resistance, voltage, and continuity values
- Wiring diagram references and connector pinouts
- Verified part numbers when replacement is required
Get started
$29/month · Cancel anytime · Or $9.95 3-day pass
H1Automatic defrostingH3Compressor overload protectionH4System overload protectionH5IPM module protectionH6Indoor unit DC fan motor does not operateH7Compressor speed reduction protection.HCPFC overcurrent malfunction / protectionL3Outdoor fan module protectionL9High power / over power protectionLCCompressor start-up failure.LPIndoor and outdoor unit match protectionP0Minimum 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 highP7Temperature sensor malfunction of carbon fin.P8Module over temperature protection.PHHigh DC bus voltage protectionPLLow DC bus voltage protectionPUCapacitor charge malfunction.U1Phase current detection malfunction of compressor.U3Low DC bus voltageU5Current detection malfunction of complete unit.U7Four-way valve malfunctionU8Indoor fan speed detection circuit malfunctionU9System 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.