Instruction/ maintenance manual of the product VMC30SB-1/VMH30SB-1 Heat Controller
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Wall Mounted Mini-Split System Single-Zone Air Conditioning/Heat Pump Service Manual(General) VMC09SB-1/VMH09SB-1 VMC12SB-1/VMH12SB-1 VMC18SB-1/VMH18SB-1 VMC24SB-1/VMH24SB-1 VMC30SB-1/VMH30SB-1 Befor e servicing the unit, r ead the “safety pr ecautions” in this manual.
- 2 - Only for training and service purposes Air Conditioner Ser vice Manual CONTENTS P art 1 General Information 1. Safety Precautions ........................................................................................................4 P art 2 Functions & Controls 1.
- 3 - Only for training and service purposes 1. Safety Precautions ....................................................................................
- 4 - Only for training and service purposes P ar t 1 General Inf or mation 1. Safety Precautions 1.1 Cautions in Repair To prevent injury to the user other people and property damage, the following instructions must be followed. ■ Incorrect operation due to ignoring instruction will cause harm or damage.
- 5 - Only for training and service purposes P ar t 1 General Inf or mation Do not tur n on the break er when the front panel and cabinet are remov ed. Be sure to ground the air conditioner with an ground/earth conductor connected to the ground/ear th ter minal.
- 6 - Only for training and service purposes P ar t 1 General Inf or mation Check to see if the par ts are mounted correctly and wires are connected. Improper installation and connections can cause an electric shock or an injur y . Check whether the installation platf or m or frame has corroded.
- 7 - Only for training and service purposes P ar t 2 Functions & Contr ols 1. List of Controls & Functions ..........................................................................................8 2. Basic Mode Controls ....................
- 8 - Only for training and service purposes P ar t 2 Functions & Controls 1. List of Functions & Contr ols Cooling Mode Heating Mode Healthy Dehumidification Auto Changeover Jet Cool Jet Heat.
- 9 - Only for training and service purposes P ar t 2 Functions & Controls 2. Basic Mode Contr ols 2.1 Cooling Mode Setting Temp. -0.5 ° C(-1 ° F) +0.
- 10 - Only for training and service purposes P ar t 2 Functions & Controls 2.3 Health y Dehumidification operation • When the dehumidification operation is set by the remote controller, the intake air temperature is detected and the set- ting temp.
- 11 - Only for training and service purposes P ar t 2 Functions & Controls 3. Special Mode Contr ols 3.1 Jet Cool operation • In the heating mode or Fuzzy operation, the Jet cool function does not work. When it is input while in other mode of operation (cooling, dehumidification, ventilation), the Jet cool operation takes place.
- 12 - Only for training and service purposes P ar t 2 Functions & Controls 4. Utility Functions 4.1 For ced operation • To operate the appliance manually if the remote control is lost. The forced operation selection switch is on the main unit of the appliance and will operate the appliance in the standard conditions.
- 13 - Only for training and service purposes Setting temp . ( ˚ C) 1.0 ˚ C(2 ˚ F) up 1.0 ˚ C(2 ˚ F) up Cooling ON temp . (Setting temp . +0.5 ˚ C(+1 ˚ F)) Cooling OFF temp . (Setting temp . -0.5 ˚ C(-1 ˚ F)) 0.5 1 Sleep time ( hour ) P ar t 2 Functions & Controls 4.
- 14 - Only for training and service purposes P ar t 2 Functions & Controls 4.6.2 Sleep timer operation for heating c ycle Heatpump Onl y • While in heating mode, 60 min. after the start of the sleep timer, the setting temperature decreases by 1 ° C(2 ° F) .
- 15 - Only for training and service purposes P ar t 2 Functions & Controls 5.1 Five Seconds Stand-b y (fan) • The indoor unit fan will begin to rotate after 5 seconds of the unit being turned on. 5.2 T wo Minutes Stand-b y (comp.) • After the compressor cycles off, it will not restart for a minimum of 2 minutes.
- 16 - Only for training and service purposes P ar t 2 Functions & Controls 5.5 Compressor Preheating Heatpump Only 5.5.1 9,12kBtu/h Model With low outdoor temperature, preheating the compressor compressor is neccessary to maintain the oil viscosi- ty before the unit starts.
- 17 - Only for training and service purposes P ar t 2 Functions & Controls 5.5 A utomatic defrost Heatpump Onl y 5.5.1 9,12kBtu/h Model • While in heating mode operation, in order to protect the evaporator pipe of the outdoor unit from freezing, the unit is reversed to the cooling cycle to defrost the evaporator pipe of the outdoor unit.
- 18 - Only for training and service purposes P ar t 2 Functions & Controls 5.5.2 18,24,30kBtu/h Model • Starting the defrosting operation 1) Defrost operation will start when the conditions below are met: a) Accumulation time of operation and the period after completion of defrost = 35 min.
- 19 - Only for training and service purposes P ar t 2 Functions & Controls • Defrosting Contr ol Algorithm 1) Lowering the compressor frequency starts the defrosting operation. Constant speed compressor is ON 10 seconds. 2) The EEV has an opening 350 pulse (Option) when starting the defrosting operation.
- 20 - Only for training and service purposes P ar t 2 Functions & Controls 5.6 P ower Rela y Control • Power relay turns on 1 second later after the power is supplied to the outdoor unit. • Control sequence : power on → PTC operating → power relay on 5.
- 21 - Only for training and service purposes P ar t 2 Functions & Controls 5.8 Overheating Pr otection (P ower Module) 5.8.1 9,12kBtu/h Model • If the temperature of the heat sink thermistor reaches over Toff, the Compressor stop instantly. • The compressor operating frequency is limited according to the heat sink thermistor.
- 22 - Only for training and service purposes P ar t 2 Functions & Controls 5.8.2 18,24,30kBtu/h Model • Function : Power module failure is protected by checking the temperature of heat sink via a temperature sensor.
- 23 - Only for training and service purposes P ar t 2 Functions & Controls 5.9 T otal Current Contr ol (Over Current Pr otection) 5.9.1 9,12kBtu/h Model 1) CT1 control • If the operating current reaches CT1, the operating frequency of the compressor decreases.
- 24 - Only for training and service purposes P ar t 2 Functions & Controls 5.9.2 18,24,30kBtu/h Model 1) Detection : check the output DC voltage of Current Transformer(CT). 2) Current Transformer Sensing Error a) In initial power input, if the CT output is over 4.
- 25 - Only for training and service purposes P ar t 2 Functions & Controls 5.10 DC P eak control 5.10.1 DC P eak Current Error b y a fault signal of IPM • If the operating current of IPM reaches 35A ± 3A, the compressor stops instantly.
- 26 - Only for training and service purposes P ar t 2 Functions & Controls 5.11.2 In ver ter Compressor (18,24,30kBtu/h Model) 1) There can be two situations (a) Temperature sensor is failed (Error Code 41) (b) Abnormal high temperature discharge temperature (error code for high discharge will be generated) Both cases unit will stop.
- 27 - Only for training and service purposes P ar t 2 Functions & Controls 5.11.3 Constant Compressor (only 30kBtu/h Model) 1) There can be two situations (a) Temperature sensor is failed (Error Code 41) (b) Abnormal high temperature discharge temperature (error code for high discharge will be generated) Both cases unit will stop.
- 28 - Only for training and service purposes P ar t 2 Functions & Controls 5.12 Low Ambient contr ol 5.12.1 9,12kBtu/h Model • If outdoor temperature drops below a certain temperature, liquid return is prevented by On/Off control of outdoor fan.
- 29 - Only for training and service purposes P ar t 2 Functions & Controls 5.14 Oil equalizing contr ol(30kBtu/h Model) Operating condition : 1) When the continuous inverter compressor running time at under 40 Hz(option) is over 2 hours(option) in 2 com- pressor system, oil restoring operation begins.
- 30 - Only for training and service purposes P ar t 3 T est Run P ar t 3 T est Run 1. Check bef ore T est Run ...................................................................................................31 2. T est Run Flo w chart .............
- 31 - Only for training and service purposes P ar t 3 T est Run Check to see whether there is any refrigerant leakage, and check whether the power or transmission cable is connected properly. Check whether the liquid pipe and gas pipe valves are fully opened.
- 32 - Only for training and service purposes P ar t 3 T est Run Is cold air discharged for more than 3 minutes ? START Test operation for indoor unit Operation mode change to Heating mode Operate the unit in cooling mode.
- 33 - Only for training and service purposes P ar t 3 T est Run 1. Check that all tubing and wiring have been properly con- nected. 2. Check that the gas and liquid side service valves are fully open. Settlement of outdoor unit • Anchor the outdoor unit with a bolt and nut Ø 0.
- 34 - Only for training and service purposes P ar t 4 T r ouble Shooting 1. 2-W ay , 3-W ay V alve ........................................................................................................3 5 2. Pumping Down ...........................
- 35 - Only for training and service purposes P ar t 4 T roub le Shooting 2-way Valve (Liquid Side) 3-way Valve (Gas Side) Shaft position Shaft position Service port Closed Closed Closed (with valve c.
- 36 - Only for training and service purposes P ar t 4 T roub le Shooting • 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.
- 37 - Only for training and service purposes P ar t 4 T roub le Shooting • Procedure (1) Connect the vacuum pump to the center hose of charge set center hose (2) Evacuation for approximately one hour. – Confirm that the gauge needle has moved toward 0.
- 38 - Only for training and service purposes P ar t 4 T roub le Shooting Lo Charging cylinder Outdoor unit Indoor unit Liquid side Gas side Open 3-Way valve 3-Way valve OPEN Open Check valve (1) CLOSE Vacuum Gage • Procedure (1) Connect the charge hose to the charging cylinder.
- 39 - Only for training and service purposes P ar t 4 T roub le Shooting T roub le analysis 1. Check temperature difference between intake and discharge air, and operating current.
- 40 - Only for training and service purposes P ar t 4 T roub le Shooting The Product doesn ’ t operate at all. (9~30kBtu/h Model) Turn off the main power and wait until LED on outdoor PCB is off.
- 41 - Only for training and service purposes P ar t 4 T roub le Shooting Turn on main power. Wait 2 minutes for the compressor to turn on. When the compressor is stopped stopped, the Indoor Fan is driven by a low speed. At this point the air speed is not controlled by the remote controller.
- 42 - Only for training and service purposes P ar t 4 T roub le Shooting Turn on the main power. When in air circulation mode, compressor/outdoor fan is stopped. Turn off main power. Check the electrical wiring diagram of Outdoor side. Check the open or short of connecting wires between Indoor and Outdoor.
- 43 - Only for training and service purposes P ar t 4 T roub le Shooting Turn on the main power. When in air circulation mode, compressor/outdoor fan is stopped. Turn off main power. Check the electrical wiring diagram of Outdoor side. Check the open or short of connecting wires between Indoor and Outdoor.
- 44 - Only for training and service purposes P ar t 4 T roub le Shooting When indoor Fan does not operate.(9~30kBtu/h Model) T r ouble 5 Check the SSR high speed operation by remote control. (the Indoor Fan Motor is connected) Turn off main power. Check the connection of CN-FAN.
- 45 - Only for training and service purposes P ar t 4 T roub le Shooting 7. Self-diagnosis Function ■ Error Indicator • The error indicator assists with self-diagnoisis of the air conditioner and identifies if there is any trouble.
- 46 - Only for training and service purposes P ar t 4 T roub le Shooting ■ 18,24,30kBtu/h Model Indoor Error 00 No Error ● ON 01 Indoor Room themistor error ● 1time ◑ OFF 02 Indoor in-piping .
- 47 - Only for training and service purposes P ar t 4 T roub le Shooting Case of error LED02G (Green) LED01G (Red) Contents Error code CT Circuit malfunction Open / Short Open / Short Open / Short Open / Short Open / Short Communication Poorly Check sum mismatching Cond.
- 48 - Only for training and service purposes ■ T roub leshooting Guide(9,12kBtu/h Model) P ar t 4 T roub le Shooting Description Cause of error 1 • Indoor thermistor (sensor) is short or open • Indoor thermistor (sensor) is not connected to the indoor pcb assembly • Damage or defect on the sensing circuit of indoor pcb assembly.
- 49 - Only for training and service purposes P ar t 4 T roub le Shooting 4 • Heat-sink thermistor is damaged(short or open). • Heat-sink Temp. is over 95 ° C(203 ° F) • Damage or defect on the sensing circuit of outdoor pcb assembly. (R01H, R02H, C01H) Heat-sink Temp.
- 50 - Only for training and service purposes P ar t 4 T roub le Shooting 5 • Wrong or missing wiring between indoor and outdoor unit cable • Defect of communication components in indoor pcb assem.
- 51 - Only for training and service purposes P ar t 4 T roub le Shooting Cause of error 6 • Supplied power is not normal • Comp Connector (CN-U,V,W) is disconnected or inserted into the wrong pos.
- 52 - Only for training and service purposes P ar t 4 T roub le Shooting 7 • Supplied power is not normal • Indoor/outdoor fan is locked • Too much refrigerant • Defect in current sensing cir.
- 53 - Only for training and service purposes P ar t 4 T roub le Shooting 8 • Indoor fan is locked or separated • Fan connector is not connected to indoor pcb assembly • Defective DC-fan driving.
- 54 - Only for training and service purposes P ar t 4 T roub le Shooting 10 • Discharge pipe temp. is short or open • Discharge pipe temp. is not connected to the outdoor pcb assembly • Damage or defect on the sensing circuit of outdoor pcb assembly Discharge pipe temp.
- 55 - Only for training and service purposes P ar t 4 T roub le Shooting 1) T roub leshooting CH01, CH02, CH06 Ω 10k Ω Check the resistance Check the voltage V 2.
- 56 - Only for training and service purposes P ar t 4 T roub le Shooting 2) T roub leshooting CH05, CH53 05 / 53 Communication (Indoor → Outdoor) • Communication poorly • Power input AC 208~230V. (Outdoor, Indoor) • The connector for transmission is disconnected.
- 57 - Only for training and service purposes P ar t 4 T roub le Shooting 3) T roub leshooting CH21 Ω Comp Copper pipe Resistance( Ω ) at 20°C(68°F) Resistance( Ω ) at 20 ° C(68 °F) 0.64 0.64 0.64 Inverter comp. V-W W-U U-V Terminal 0.8 0.8 0.
- 58 - Only for training and service purposes P ar t 4 T roub le Shooting 4) T roub leshooting CH21, CH22 V 21 22 DC_Peak C/T Internal circuit Compressor output current over.(30A ↑ ) Initial current error check if the compressor is locked or operating.
- 59 - Only for training and service purposes P ar t 4 T roub le Shooting 5) T roub leshooting CH23, CH28 V 23 28 DC Link Low voltage. DC Link High voltage • DC link volt. is 140VDC or lower. • DC link volt. is 140VDC or higher. • Check the power source.
- 60 - Only for training and service purposes P ar t 4 T roub le Shooting 6) T roub leshooting CH24, CH25 CN TRNAS1 CN PRESS TRANS1 60Hz, DC12V 24 25 Press S/W Open Input voltage • Low / High press S/W open. • Abnormal Input voltage (140VAC or lower 300VAC or higher).
- 61 - Only for training and service purposes P ar t 4 T roub le Shooting 7) T roub leshooting CH26, CH27 ‘ B ’ ‘ A ’ 26 27 DC Compressor Position PSC Fault • Compressor position detect erro.
- 62 - Only for training and service purposes P ar t 4 T roub le Shooting 8) T roub leshooting CH32, CH33, CH40 LEV Openness (Pulse) COMP Frequency (Hz) Toff(105) ° C T1(90) ° C T2(95) ° C OFF Normal OFF Control Normal Normal Normal Discharge pipe temp.
- 63 - Only for training and service purposes P ar t 4 T roub le Shooting 9) T roub leshooting CH41, CH44, CH45, CH46, CH47, CH65 Ω 41 44 45 46 47 65 Discharge pipe sensor (Inverter) Air sensor Cond.
- 64 - Only for training and service purposes P ar t 4 T roub le Shooting 10) T roub leshooting CH51, CH60 60 EEPROM Check sum • Check sum error • Check the PCB ASM P/No. • Check for poor soldering. Display code Title Cause of error Check point & Normal condition Chec k P oint • CH 60 1.
- 65 - Only for training and service purposes P ar t 4 T roub le Shooting 11) T roub leshooting CH61, CH62 61 62 Condenser pipe sensor temp. high Heat sink sensor temp. high • Condenser pipe sensor detected high temp.(65 ° C(149 ° F)) • Heat sink sensor detected high temp.
P/NO : MFL41161604 20/02/2008 Specifications and performance data subject to change without notice. HEA T CONTROLLER, INC. 1900 WELL W ORTH A VENUE • JA CKSON, MICHIGAN 49203 THE QU ALITY LEADER IN .
An important point after buying a device Heat Controller VMC30SB-1/VMH30SB-1 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Heat Controller VMC30SB-1/VMH30SB-1 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Heat Controller VMC30SB-1/VMH30SB-1 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Heat Controller VMC30SB-1/VMH30SB-1 you will learn all the available features of the product, as well as information on its operation. The information that you get Heat Controller VMC30SB-1/VMH30SB-1 will certainly help you make a decision on the purchase.
If you already are a holder of Heat Controller VMC30SB-1/VMH30SB-1, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Heat Controller VMC30SB-1/VMH30SB-1.
However, one of the most important roles played by the user manual is to help in solving problems with Heat Controller VMC30SB-1/VMH30SB-1. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Heat Controller VMC30SB-1/VMH30SB-1 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
