Model reference

Sanyo DLF4H

Air Conditioner

1 document45 error codes

Available documentation

Service Manual

SERVICE MANUAL R−410A Ductless Split System Air Conditioner and Heat Pump81 pg
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Test values, resistance specs, and wiring references
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C5 on my Sanyo DLF4H

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Jumper connection malfunction

From Service Manual 298270, p.42:

1.Access service mode to confirm the active fault code and read stored error history.

2.Measure control board supply voltage at test points. Expected: 12 VDC and 5 VDC.

3.Inspect all connectors on the main control for corrosion or backed-out pins.

Part WPW10804018

Electronic control board

Error codes (45)

CodeMeaning

C5Jumper connection malfunction protection E1System high pressure protection E2Anti-freeze protection of indoor unit E4Compressor discharge high temperature protection E5Overcurrent / low voltage protection E6Communication malfunction between indoor and outdoor units E8Anti-high temperature protection / overload protection of compressor.EEEEPROM read/write malfunction EUIPM temperature high limit causing compressor speed reduction.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 protection H0Heating high temperature protection.H1Automatic defrosting H3Compressor overload protection H4System overload protection H5IPM module protection H6Indoor unit DC fan motor does not operate H7Compressor speed reduction protection.HCPFC overcurrent malfunction / protection L3Outdoor fan module protection L9High power / over power protection LCCompressor start-up failure.LPIndoor and outdoor unit match protection

View all 45 error codes

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 P7Module sensor circuit malfunction.P8Module over temperature protection.PHHigh DC bus voltage protection PLLow DC bus voltage protection PUCapacitor charge malfunction.U1Compressor current circuit malfunction.U3Low DC bus voltage U7Four-way valve malfunction U8Indoor fan speed detection circuit malfunction U9System current too high / outdoor unit error.

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