Samsung Electronics 108Troubleshooting4-3-24 Low Pressure sensor error (Open/Short)1. Low Pressure sensor Open/Short error determination method1) Identifies from when power is supplied or 2 minutes after RESET, and only when set is stopped.2) An Open/Short error will occur if the input voltage standard range of 0.5V ~ 4.95V is exceeded.2. Inspection MethodReplace Low Pressure sensorPlease re-inspect after connectingthe connector to the PBANoYesLow pressuresensor connector (CN41)connected to PBA?Refill refrigerant after vacuumNoYesIs there refrigerant inside the set?(Please check by connecting the Manifold gaugeto the service valve)Replace PBANoYesLow pressure sensor terminal of PBA : Is thevoltage between 3 and 4 pins 5V?The ف mark is the 1st pin on the PBA.Outdoor unitdisplayIndoorunitdisplayDuct, Cassette (1/2 Way),Console, Celing Cassette (4/Mini4 Way) Wall-mounted (NeoForte)Operation Defrost Timer Fan Filter/MPI Operation Defrost Timer Filter Operation Timer Turbo: ON : Flash ×: OFFJudgmentMethod ∙ Detect according to temperature detected with the low pressure sensor.Cause ofproblem ∙ Disconnection or breakdown of relevant sensor.4-3 Appropriate Measures for Different Symptom (cont.)
