Heat Controller VMC18SB-1/VMH18SB-1 Pumping Down, Procedure, Air purging of the charge hose

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Part 4 Trouble Shooting

2. PumpingDown

Indoor unit

Liquid side

 

Open

Outdoor unit

2-Way valve

Gas side

Closed

3-Way valve

Lo

CLOSECLOSE

Purge the air

•Procedure

(1)Confirm that both the 2-way and 3-way valves are set to the open position.

–Remove the valve stem caps and confirm that the valve stems are in the raised position.

–Be sure to use a hexagonal wrench to operate the valve stems.

(2)Operate the unit for 10 to 15 minutes.

(3)Stop operation and wait for 3 minutes, then connect the charge set to the service port of the 3-way valve.

–Connect the charge hose with the push pin to the service port.

(4)Air purging of the charge hose.

–Open the low-pressure valve on the charge set slightly to allow air purge from the charge hose.

(6)Operate the air conditioner at the cooling cycle and stop it when the gauge indicates 1kg/cm2·g (14 PSI).

(7)Immediately set the 3-way valve to the closed position.

–Do this quickly so that the gauge ends up indi- cating 3 to 5kg/cm2·g (42 to 71PSI).

(8)Disconnect the charge set, and mount the 2- way and 3-way valve’s stem nuts and the ser- vice port nut.

–Use torque wrench to tighten the service port nut to a torque of 1.8 kg·m (13 lbf·ft)

–Be sure to check for gas leakage.

(5) Set the 2-way valve to the closed position.

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Only for training and service purposes

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Contents Heat CONTROLLER, INC Contents Part 1 General Information Safety Precautions Be sure not to do Be sure to follow the instructionPart 1 General Information Inspections after Repair Part 2 Functions & Controls List of Functions & Controls Category Function Description RemarkBasic Mode Controls Cooling ModeHeating Mode Heatpump Only Intake air Temp Setting Temp Healthy Dehumidification operationAuto changeover operation Heatpump Only Special Mode Controls Energy saving operation in cooling modeJet Cool operation Jet Heat operation Heatpump OnlyAuto cleaning operation Utility FunctionsForced operation Heat/pump Model Cooling/only ModelAir volume control Sleep mode Auto controlSleep timer operation for cooling cycle Natural Air ControlAuto WindSleep timer operation for heating cycle Heatpump Only Auto restartProtection Functions & Controls Five Seconds Stand-by fanTwo Minutes Stand-by comp Hot start Heatpump OnlyOutdoor Temperature Running Time sec Compressor Preheating Heatpump OnlySump Heater Control 9, 12kBtu/h Model Only Heatpump Only 1 9,12kBtu/h ModelAutomatic defrost Heatpump Only Starting the defrosting operation 2 18,24,30kBtu/h ModelDefrosting Control Algorithm Control algorithm of defrost completionPower Relay Control InverterOverheating Protection Power Module Heat sink sensor failure error Heat sink temperature controlFunction Total Current Control Over Current Protection CT1 controlCT2 control Model KBtu/h Cooling Heating11A 12A 14A 15.5A DC Peak control Discharge Pipe Temp ControlInverter Compressor 18,24,30kBtu/h Model Constant Compressor only 30kBtu/h Model There can be two situationsCompressor working Low Ambient control 12.1 9,12kBtu/h Model12.2 18, 24, 30kBtu/h Model Model Mode-in Condition Mode-out ConditionOil return control30kBtu/h Model Heatpump Only Oil equalizing control30kBtu/h ModelOperating Contion Operation ProcessCheck before Test Run Test Run Flow chart Test Run Detail Part 3 Test RunCheck before Test Run Test Run Flow chart StartPump Down Procedure Test Run DetailSettlement of outdoor unit Evaluation of the performancePart 4 Trouble Shooting Way, 3-Way Valve Way Valve Liquid SideProcedure Pumping DownAir purging of the charge hose Set the 2-way valve to the closed positionEvacuation Mount the valve stem nuts and the service port nut Gas Charging After EvacuationConnect the charge hose to the charging cylinder Purge the air from the charge hoseCycle Troubleshooting Guide Trouble analysisElectronic Parts Troubleshooting Guide Procedure Specification RemedyTrouble Compressor/Outdoor Fan does not operate 9, 12kBtu/h Model Trouble When indoor Fan does not operate.9~30kBtu/h Model Error Indicator Self-diagnosis Function12kBtu/h Model 18,24,30kBtu/h Model Indoor Error Outdoor ErrorError code Descrition Red Green StatusError CodeTroubleshooting Guide9,12kBtu/h Model Description Cause of error Heat-sink Temp. is over Description Cause of error DC Peak Error Description Cause of error Over current Error Description Cause of error Indoor fan is locked Description Cause of error Discharge pipe temp. is Troubleshooting CH01, CH02, CH06 Check PointPart Trouble Shooting Troubleshooting CH05, CH53Troubleshooting CH21 CompCopper Comp pipe Troubleshooting CH21, CH22 Troubleshooting CH23, CH28 Troubleshooting CH24, CH25 Troubleshooting CH26, CH27 ‘B’Troubleshooting CH32, CH33, CH40 Troubleshooting CH41, CH44, CH45, CH46, CH47, CH65 Troubleshooting CH51, CH60 Inverter/ConstantCondenser/Suction Pipe Troubleshooting CH61, CH62 Heat CONTROLLER, INC

VMC12SB-1/VMH12SB-1, VMC18SB-1/VMH18SB-1, VMC24SB-1/VMH24SB-1, VMC09SB-1/VMH09SB-1, VMC30SB-1/VMH30SB-1 specifications

The Heat Controller VMC30SB-1/VMH30SB-1, VMC09SB-1/VMH09SB-1, VMC24SB-1/VMH24SB-1, VMC18SB-1/VMH18SB-1, and VMC12SB-1/VMH12SB-1 are versatile and efficient HVAC systems designed for residential and commercial applications. These units stand out due to their innovative technologies, user-friendly features, and reliable performance, making them an excellent choice for heating and cooling needs.

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