Heat Controller VMC30SB-1/VMH30SB-1 service manual Description Cause of error Over current Error

Page 52

Part 4 Trouble Shooting

Error code

Description

Cause of error

 

 

 

 

Over current Error

• Supplied power is not normal

7

• Indoor/outdoor fan is locked

(CT2)

• Too much refrigerant

 

 

 

• Defect in current sensing circuit in outdoor pcb assembly

 

 

 

Check flow

Supplied voltage to Outdoor pcb is about AC 208~230V ?

No

Check power source

YES

Does indoor / outdoor fan work normally ?

No

Check indoor / outdoor fan and adjust.

YES

Refrigerant pressure is right ?

No

Check refrigerant pressure and adjust.

YES

Current sensing circuit is right ?

No

Check current sensing circuit.

-check CT is damaged in outdoor pcb (output wire is disconnected to pin or not)

-BD01N is inserted in right position

(refer to marking on pcb and component)

-Spec of R01N (1k), R02N (1.65k) is correct

-Direction of diode (D01N, D02N) is right

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Only for training and service purposes

Image 52
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 RemarkCooling Mode Basic Mode ControlsHeating Mode Heatpump Only Healthy Dehumidification operation Intake air Temp Setting TempAuto 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 temperature control Heat sink sensor failure errorFunction 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 There can be two situations Constant Compressor only 30kBtu/h ModelCompressor 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 Self-diagnosis Function Error Indicator12kBtu/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, CH53Comp Troubleshooting CH21Copper 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 Inverter/Constant Troubleshooting CH51, CH60Condenser/Suction Pipe Troubleshooting CH61, CH62 Heat CONTROLLER, INC

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