Tags: air  conditioning  Heat  Pump  
Channel: Education
Uploaded: December 31, 1969 at 6:59 pm
Author: learnhvac
Length: 07:33
Rating: N/A
Views: 486
Heat Pump - Problem 85Hint: Measure Amps, Volts, Ohms, Temperatures, Pressures and determine the problem with this system.Abbreviations:LO Low Side PressureCOR Corresponding Temperature of LOSLT Suction Line TemperatureSH SuperheatHI High Side PressureCOR Corresponding Temperature of HILLT Liquid Line TemperatureSC SubcoolingDLT Discharge Line TemperatureEEA Entering Evaporator Air TemperatureLEA Leaving Evaporator Air TemperatureETD Evaporator Temperature Drop (air)ECA Entering Condenser Air TemperatureLCA Leaving Condenser Air TemperatureCTD Condenser Temperature Difference (air)AMP Amperage Draw (compressor, actual amps)DLT Discharge Line TemperatureLO 42COR20SLT32SH12HI190COR98LLT8 SC13EEA68LEA82ETD14ECA45LCA35CTD10AMP7.2DLT133SCHEMATIC AND PIPING DIAGRAMC CommonCAP CapacitorCR Current RelayCFM Condenser Fan MotorCOMPR CompressorEFM Evaporator Fan MotorHPC High Pressure ControlL LineLPC Low Pressure ControlLLSV Liquid Line Solenoid ValveN NeutralR RunS StartSW SwitchT-STAT ThermostatVAC Volts Alternating CurrentCorrect Diagnosis![No Faults]This heat pump is in the heating mode and is operating well. There is adequate superheat and subcooling and a reasonable amount of temperature rise through the indoor coil. Note that the wiring diagram only shows the outdoor unit components. The indoor blower motor, the control voltage transformer and more control components are located in the air handling unit (not shown).