Heat Controller Energy Knight B/A-HMC09AS Service Manual

Wall mounted mini-split system air conditioning/heat pump
Hide thumbs Also See for Energy Knight B/A-HMC09AS:
Table of Contents

Advertisement

®
Wall Mounted
Mini-Split System
Air Conditioning/Heat Pump

Service Manual

B/A-HMC09AS
B/A-HMC12AS, B/A-HMH12AS
B/A-HMC18AS, B/A-HMH18AS
B/A-HMC24AS, B/A-HMH24AS
Before servicing the unit, read the
"safety precautions" in this manual.
Only for authorized service personnel.

Advertisement

Table of Contents
loading

Summary of Contents for Heat Controller Energy Knight B/A-HMC09AS

  • Page 1: Service Manual

    ® Wall Mounted Mini-Split System Air Conditioning/Heat Pump Service Manual B/A-HMC09AS B/A-HMC12AS, B/A-HMH12AS B/A-HMC18AS, B/A-HMH18AS B/A-HMC24AS, B/A-HMH24AS Before servicing the unit, read the “safety precautions” in this manual. Only for authorized service personnel.
  • Page 2: Table Of Contents

    Contents Functions............................3 Product Specifications ........................ 5 Dimensions........................... 7 Refrigeration Cycle Diagram..................... 10 Wiring Diagram .......................... 12 Operation Details ........................15 Display Function ........................22 Self-diagnosis Function ......................22 Installation ..........................23 Operation ............................ 38 Disassembly of the Parts(Indoor Unit)..................40 Cycle Troubleshooting Guide ....................
  • Page 3: Functions

    Functions Indoor Unit Operation ON/OFF by Remote controller Sensing the Room Temperature • Room temperature sensor (THERMISTOR) Room temperature control • Maintains the room temperature in accordance with the Setting Temp. Starting Current Control • Indoor fan is delayed for 5 seconds at the starting. Time Delay Safety Control •...
  • Page 4: Remote Controller

    Remote Controller Operation ON/OFF Operation Mode Selection Cooling Operation Mode.( Auto Operation Mode.( (Cooling (Heating Healthy Dehumidification Operation Mode.( Heating Operation Mode.( model only) model only) Fan Speed Selection (Low) (Med) (High) (CHAOS) Room, Temperature Display : (High: 39°C(98°F) LOW : 12°C(54°F) Temperature Setting Down to 18°C(64°F) Down to 16°C(60°F)
  • Page 5: Product Specifications

    Product Specifications(Cooling Only) Items Unit B/A-HMC09AS B/A-HMC12AS B/A-HMC18AS B/A-HMC24AS Power Supply ø, V, Hz 1, 115V, 60 1, 115, 60 1, 230/208, 60 1, 230/208, 60 Cooling Capacity BTU/h 9,000 12,000 18,000/17,800 23,000/22,600 Input 1,290 1,900/1,870 2,550/2,500 Running Current 11.7 8.5/9.0...
  • Page 6 Product Specifications(Cooling & Heating) Items Unit B/A-HMH12AS B/A-HMH18AS B/A-HMH24AS Power Supply ø, V, Hz 1, 115, 60 1, 230/208, 60 1, 230/208, 60 Cooling Capacity BTU/h 12,000 18,000/17,800 23,000/22,600 Heating Capacity BTU/h 12,000 19,000/18,700 23,000/22,600 Input Cooling 1,290 1,900/1,870 2,550/2,500 Heating 1,290 1,900/1,870...
  • Page 7: Dimensions

    Dimensions (1) Indoor Unit Installation plate Tubing hole cover Tubing hole cover MODEL 18K, 24K mm(inch) 802(31.6") 888(35.0") 1,080(42.5") mm(inch) 262(10.3") 287(11.3") 314(12.4") mm(inch) 165(6.5") 170(6.7") 181(7.1") - 7 -...
  • Page 8 (2) Outdoor Unit 1. 9K, 12K Gas side (3-way valve) Liquid side (2-way valve) MODEL 9K, 12K unit mm(inch) 770(30.3) mm(inch) 540(21.3) mm(inch) 245(9.6) mm(inch) 287(11.3) mm(inch) 64(2.5) mm(inch) 518(20.4) mm(inch) 10(0.4) mm(inch) 100(3.9) - 8 -...
  • Page 9 2. 18K, 24K Gas side 3-way valve Liquid side 3-way valve MODEL 18K, 24K mm(inch) 870(34.3) mm(inch) 655(25.8) mm(inch) 320(12.6) mm(inch) 370(14.6) mm(inch) 25(1.0) mm(inch) 630(24.8) mm(inch) 25(1.0) mm(inch) 546(21.5) mm(inch) 162(6.4) mm(inch) 162(6.4) mm(inch) 54(2.1) mm(inch) 74.5(2.9) mm(inch) 79(3.1) - 9 -...
  • Page 10: Refrigeration Cycle Diagram

    Refrigeration Cycle Diagram • Cooling Only Models INDOOR UNIT OUTDOOR UNIT LIQUID SIDE CAPILLARY TUBE HEAT EXCHANGER HEAT (EVAPORATOR) EXCHANGER (CONDENSER) COMPRESSOR GAS SIDE Pipe size(Diameter:ø) Piping length Elevation MODEL Liquid Rated Rated 9K, 12K 1/2" 1/4" 7.62m(25ft) 15m(50ft) 5m(16ft) 8m(26ft) (Cooling Only) 5/8"...
  • Page 11 • Cooling & Heating Models OUTDOOR UNIT INDOOR UNIT LIQUID SIDE CAPILLARY TUBE CHECK VALVE HEAT HEAT EXCHANGER EXCHANGER (EVAPORATOR) (CONDENSER) GAS SIDE REVERSING VALVE COOLING COMPRESSOR HEATING Pipe size(Diameter:ø) Piping length Elevation MODEL Liquid Rated Rated 9K, 12K 1/2" 1/4"...
  • Page 12: Wiring Diagram

    Wiring Diagram (1) Indoor Unit 1. 9K, 12K, 18K, 24K(Cooling Only Models, Cooling & Heating Models) - 12 -...
  • Page 13 (2) Outdoor Unit • Cooling Only Models 1. 9K, 12K MAIN P.C.B T/B 1 MOTOR FUSE 3.15A RY-COMP CN-POWER CN-DC/DC RD BR BK BL FUSE 2.5A ( N ) ( L ) TERMINAL BLOCK O.L.P COMP. TO INDOOR UNIT POWER INPUT OUTDOOR WIRING DIAGRAM 3854A30077Z...
  • Page 14 • Cooling & Heating Models 1. 9K, 12K MAIN P.C.B RY-4WAY T/B 3 4WAY- VALVE T/B 4 RY-FAN RY-HEATER T/B 1 FUSE MOTOR 3.15A T/B 2 RY-COMP CN-POWER CN-DC/DC CRANK RD BR BK BL CASE HEATER FUSE 2.5A ( N ) ( L ) TERMINAL BLOCK...
  • Page 15: Operation Details

    Operation Details (1) The function of main control 1. Time delay Safety Control • 3min.; The compressor operation is delayed for 3 minutes to balance the pressure of cycle. (Protection of compressor) • 5sec.; The indoor fan is delayed for 5 seconds, when operating initially, to prevent noises occurred by the vertical louver and wind.
  • Page 16 4. Auto Operation (Electronic control mode) • The operation procedure is shown below. (Cooling & Heating Model) Press Start/Stop Button Select Auto Operation Mode Check the Room temperature Operation mode Indoor fan speed are decided automatically by the unit electronic control. Setting temperature Intake-air Over...
  • Page 17 Auto Operation for Dehumidification(only Heating Model) • The Setting temperature will be same that of the auto operation for cooling. - Compressor ON temperature; Setting temperature +2°F - Compressor OFF temperature; Setting temperture -1°F Intake-air temp. below 68°F Over 68°F~below 70°F over 86°F Setting temp.
  • Page 18 5. Healthy Dehumidification • When the dehumidification operation input by the remote control is received, the intake air temperature is detected and the setting temp is automatically set according to the intake air temperature. 26°C Intake Air Temp 25°C 24°C Intake Intake Air Temp<26°C Intake Air Temp-1°C 18°C...
  • Page 19 6. Heating Operation Mode(only Heating Model) The unit will operate according to the setting conditions by the remote controller. The operation diagram is shown below. INTAKE AIR TEMP. SETTING TEMP. + 6°F (Compressor OFF) SETTING TEMP. (Compressor ON) minimum minimum minimum 1 min.
  • Page 20 7. Cooling or Heating Mode with Sleep Mode Auto Control • When selecting the Cooling( ) or the Heating( ) combined with the Sleep Mode Auto Control( ), the operation diagram is as following. Cooling Mode with the Sleep Mode •...
  • Page 21: Forced Operation

    8. Forced Operation Operation procedures when the remote control can't be used. Slide Switch Open the front panel upward and move the Slide Switch FORCED to the Forced Operation position. OPERATION Slide If you want to stop operation, move the Slide Switch to AUTO Switch RESTART...
  • Page 22: Display Function

    Display Function Operation Indicator • Cooling, Soft Dry, Fan, Heating Sleep timer Indicator • Sleep Mode Timer Indicator • Timer Mode : Cooling & Heating Model only Defrost Indicator or Hot start Indicator : only Cooling Model DOOR • Hot-start, Defrost •...
  • Page 23: Installation

    Installation IMPORTANT! Please read this instruction sheet completely before installing the product. This air conditioning system meets strict safety and operating standards. As the installer or service person, it is an important part of your job to install or service the system so it operates safely and efficiently. WARNING •...
  • Page 24 (1) Installation Parts Provided More than 60cm(24") More than 10cm(4") More than 1. Type "A" screw 10cm(4") 2. Installation Plate More More than than 60cm(24") 70cm(28") 3. Type "B" screw Rooftop Installations: 4. Holder Remote Control If the outdoor unit is installed on a roof structure, be sure to level the unit.
  • Page 25 3) How to fix installation plate 18, 24K Btu The wall you select should be strong and solid enough to prevent vibration Left rear piping Right rear piping 1. Mount the installation plate on the wall with four A,B,C type A screws. If mounting the unit on a concrete wall, use anchor bolts.
  • Page 26 (3) Flaring work and connection 4. Flaring work Carry out flaring work using flaring tool as shown below. of piping 1) Flaring work Outside diameter Main cause for gas leakage is due to defect in flaring inch work. Carry out correct flaring work in the following pro- cedure.
  • Page 27 2) Connection of piping --Indoor 3. Tape the tubing, drain hose and the connecting cable. Be sure that the drain hose is located at the Preparing the indoor unit's piping and drain hose for lowest side of the bundle. Locating at the upper side installation through the wall.
  • Page 28 Tighten the flare nut with a wrench. Wrap the area which accommodates the rear piping hous- ing section with vinyl tape. Spanner (fixed) Indoor Connection unit pipe pipe Flare nut Wrap with vinyl tape Vinyl tape Connection (wide) Torque pipe wrench Connecting cable Indoor...
  • Page 29: Indoor Unit

    3. Insert the connecting cable into the indoor unit. Capacity Pipe Size[Torque] Don't connect the cable to the indoor unit. (Btu/h) LIQUID Make a small loop with the cable for easy connection later. 1/2"[5.5kg.m] 1/4"[1.8kg.m] 1/2"[5.5kg.m] 1/4"[1.8kg.m] 4. Tape the drain hose and the connecting cable. 5/8"[6.6kg.m] 1/4"[1.8kg.m] 5/8"[6.6kg.m]...
  • Page 30: Outdoor Unit

    Bundle the piping and drain hose together by wrapping 3) Connection of the pipes-Outdoor them with cloth tape over the range within which they fit into the rear piping housing section. 1. Align the center of the pipings and sufficiently tighten the flare nut by hand Pipe Drain hose...
  • Page 31 (4) Connecting the cable between indoor unit and outdoor unit 1. Remove the cover control from the unit by loosen- Wiring Diagram ing the 3 screws. Connecting cable(Low voltage) 2. Dismount caps on the conduit panel. Indoor Unit Outdoor Unit 3.
  • Page 32 Connection method of the connecting cable(Example) (1) Dismount two-caps on the conduit panel. (2) Make a hole appropriate for the passage of connection cable through on cap by tool. (for low voltage line) (3) Pass the connecting cable through the hole. (4) Properly connect the cable on the terminal block.
  • Page 33: Connect The Cable To The Indoor Unit

    CAUTION If a power plug is not to be used, provide a circuit breaker between power source and the unit as shown below. Main power source Circuit Breaker Conditioner Use a circuit breaker or time delay fuse. Connect the cable to the indoor unit 1.
  • Page 34 (5) Checking the Drainage and forming the pipings 2) Form the piping 1) Checking the drainage 1. Form the piping by wrapping the connecting por- 1. To remove the front panel from the indoor unit, tion of the indoor unit with insulation material and remove the front panel from the indoor unit cabinet.
  • Page 35: Leak Test

    (6) Air Purging Air and moisture remaining in the refrigerant system have undesirable effects as indicated below. • Pressure in the system rises. Indoor unit • Operating current rises. • Cooling(or heating) efficiency drops. • Moisture in the refrigerant circuit may freeze and block capillary tubing.
  • Page 36 Evacuation 1. Connect the charge hose end described in the pre- ceding steps to the vacuum pump to evacuate the tubing and indoor unit. Confirm the "Lo" knob of the manifold valve is Indoor unit open. Then, run the vacuum pump. The operation time for evacuation varied with the tubing length and capacity of the pump.
  • Page 37 (7) Test running 3. Evaluation of the performance Operate unit for 15~20 minutes, then check the system refrigerant charge: 1. Check that all tubing and wiring have been properly 1. Measure the pressure of the gas side service valve. connected. 2.
  • Page 38: Operation

    Operation (1) Name and Function-Remote Control (Cooling Models) Remote Controller Signal transmitter. Transmits the signals to the room air conditioner. ON/OFF TIMER BUTTONS Signal transmitter Used to set the time of starting and stopping operation. TIME SETTING BUTTONS Used to adjust the time. TIMER SET/CANCEL BUTTONS Used to set the timer when the desired time is obtained and to cancel the Timer operation.
  • Page 39 (2) Name and Function-Remote Control (Heat Pump Models) Remote Controller Signal transmitter. Transmits the signals to the room air conditioner. ON/OFF TIMER BUTTONS Signal transmitter Used to set the time of starting and stopping operation. TIME SETTING BUTTONS Used to adjust the time. TIMER SET/CANCEL BUTTONS Used to set the timer when the desired time is obtained and to cancel the Timer operation.
  • Page 40: Disassembly Of The Parts(Indoor Unit)

    Disassembly of the parts (Indoor unit) (1) 9K, 12K Models(Cooling Only, Cooling & Heating) Warning : Disconnect the unit from power supply before making any checks. Be sure the power switch is set to “OFF”. To remove the Grille from the Chassis. •...
  • Page 41 2. To remove the Control Box. • Remove 2 securing screws. • Pull the control box out from the chassis careful- 3. To remove the Discharge Grille. • Unhook the discharge grille and pull the dis- charge grille out from the chassis carefully. 4.
  • Page 42 • Unhook the tab on the right inside of the chassis at the same time, slightly pull the evaporator toward you until the tab is clear of the slot. 5. To remove the Cross-Flow Fan • Loosen the screw securing the cross-flow fan to the fan motor (do not remove).
  • Page 43 (2) 18K, 24K, Models Cooling Only, Cooling & Heating) Warning : Disconnect the unit from power supply before making any checks. Be sure the power switch is set to “OFF”. To remove the Grille from the Chassis. • Set the up-and-down air discharge louver to open position (horizontally) by finger pressure.
  • Page 44 2. To remove the Control Box. • Remove 2 securing screws. • Pull the control box out from the chassis carefully. 3. To remove the Discharge Grille. • Remove the securing screw. • Pressing the right side of the discharge grille downward slightly, unhook the discharge grille.
  • Page 45 • Unhook the tab on the right inside of the chassis at the same time, slightly pull the evaporator toward you until the tab is clear of the slot. 5. To remove the Cross-Flow Fan • Loosen the screw securing the cross-flow fan to the fan motor (do not remove).
  • Page 46: Cycle Troubleshooting Guide

    Cycle Troubleshooting Guide 1. Trouble analysis 1. Check temperature difference between intake and discharge air and operating current. Temp. difference :approx. 0°F All amount of refrigerant leaked out. Current :less than 80% of Check refrigeration cycle. rated current Temp. Difference Temp.
  • Page 47 2. Product does not operate at all. (* Refer to Electronic Control Device drawing and Schematic diagram.) Turn off Main Power (After 10 seconds) Turn on Main Power Does "beeping" sound is made from the Indoor Unit? Primarily, the operating condition of Micom is OK. Check the voltage of power(About AC 208V/AC230V, 60Hz) •...
  • Page 48 3. The product is not operate with the remote controller. Turn on Main Power While the compressor has been stopped, the compressor does not operate owing to the delaying function for 3 minutes after stopped. When the compressor stopped Indoor Fan is driven by a low speed. At this point the wind speed is not controlled by the remote controller.
  • Page 49 4. Compressor/Outdoor Fan are unable to drive. Turn on Main Power Operate "Cooling Mode( )" by setting the desired temperature of the remote controller is less than one of the indoor temperature by 2°F at least. When in Fan Mode, Compressor/Outdoor Fan is stopped. Check the sensor for indoor temperature is attached as close as to be effected by the temperature of Heat Exchanger(EVA).
  • Page 50 5. When Indoor Fan does not operate. Does the voltage of each terminals of CN-MOTOR CONNECTOR in Indoor unit corresponds to values in the Table of page 51? Does the voltage of terminal of CN-DC/DC CONNECTOR in Check connecting condition of the CN-MOTOR CON- Indoor unit corresponds to the values in the table of page 51? NECTOR Do the voltage of terminal of...
  • Page 51 6. When Vertical Louver does not operate. • Confirm that the Vertical Louver is normally geared with the shaft of Stepping Motor. • If the regular torque is detected when rotating the Vertical Louver with hands Normal • Check the connecting condition of CN-UP/DOWN Connector •...
  • Page 52 7. When a comunication error occurs. • The operation indicator of Indoor unit blinks five times. • The red indicator of Outdoor unit blinks five times. Check the connecting wires between Indoor and Outdoor unit for the connecting error and the contacting condition. Check the installation condition of outdoor unit.
  • Page 53 8. The phenomena in case of connecting error INDOOR UNIT Connector Type Phenomena Condition CN-DC/DC Open and connecting error • The same as the phenomenon of Outdoor Unit. Blue Black Brown • The indoor fan does not operate. CN-MOTOR Open •...
  • Page 54 OUTDOOR UNIT Connector Type Phenomena Condition • All functions stop. • The operation with the remote controller, forced and OPEN test one do not operate. CN-POWER Connecting reversely • PWB pattern is damaged when applying the power. • All functions stop or the compressor does not operate. OPEN •...
  • Page 55 9. Voltage of Connectors according to Indoor Fan Speed CN-MOTOR - 55 -...
  • Page 56: Electronic Control Device

    Electronic Control Device (1) MAIN PWB ASSY(Indoor Unit) • PWB ASSY SVC PART LIST OPTIONAL FUNCTION MODEL P/No. OR1H OR2H OR3H OR4H OR5H OR6H 24K Heating Model 6871A10035A OPEN OPEN OPEN OPEN 24K Cooling Model 6871A10035B OPEN OPEN OPEN 18K Heating Model 6871A10035C OPEN 6.8K...
  • Page 57 (2) MAIN PWB ASSY(Outdoor Unit) • PWB ASSY SVC PART LIST OPTIONAL FUNCTION MODEL P/No. OR4H OR5H OR6H OR7H OR 8H FUSE RY-FAN CN-TH HEATER 4WAY 4WAY 12K Heaing Model 6871A10036E 6.8K 5.1K OPEN 39K 125V 12K Cooling Model 6871A10036F 6.8K 5.1K OPEN 39K 3.15A...
  • Page 58 (3) DISPLAY PWB ASSY <9K, 12K, 18K, 24K> (P/No: 6871A30009C) - 58 -...
  • Page 59: Schematic Diagram

    Schematic Diagram 1. Indoor Unit - 59 -...
  • Page 60: Outdoor Unit

    2. Outdoor Unit - 60 -...
  • Page 61: Exploded View And Replacement Parts List

    Exploded View and Replacement Parts List 1. Indoor Unit (9K) - 61 -...
  • Page 62 Parts List(9K) REMARK HEAT CONTROLLER Q/TY ("R"means LOCATION NO. PART NAME service parts) PART NO B-HMC09AS 131410 CHASSIS ASSY 2021-0188 135311 GRILLE ASSY,DISCHARGE(INDOOR) 2020-0033 135312 GRILLE ASSY,FRONT(INDOOR) 2020-0034 135314 GRILLE ASSY,INLET SUB 2020-0035 146811 MOTOR ASSY,STEP 2010-0029 152302 FILTER(MECH),A/C 2040-0123...
  • Page 63 2. Indoor Unit(12K) - 63 -...
  • Page 64 Parts List(12K) REMARK HEAT CONTROLLER Q/TY ("R"means LOCATION NO. PART NAME service parts) PART NO B-HMC12AS B-HMH12AS 131410 CHASSIS ASSY 2021-0189 135311 GRILLE ASSY, DISCHARGE(INDOOR) 2020-0037 135312 GRILLE ASSY, FRONT 2020-0038 2020-0039 135314 GRILLE ASSY, INLET 2020-0040 2020-0041 146811 MOTOR ASSY, STEP...
  • Page 65 3. Indoor Unit(18K, 24K) - 65 -...
  • Page 66 Parts List(18K, 24K) REMARK HEAT CONTROLLER Q/TY ("R"means LOCATION NO. PART NAME service parts) PART NO B-HMC18AS B-HMH18AS B-HMC24AS B-HMH24AS 131410 CHASSIS ASSY 2021-0190 135311 GRILLE ASSY,DISCHARGE(INDOOR) 2020-0044 135312 GRILLE ASSY,FRONT(INDOOR) 2020-0045 2020-0046 135314 GRILLE ASSY,INLET SUB 2020-0047 2020-0048 146811...
  • Page 67 4. Outdoor Unit(9K, 12K) - 67 -...
  • Page 68 Parts List(9K, 12K) REMARK HEAT CONTROLLER Q/TY ("R"means LOCATION NO. PART NAME service parts) PART NO A-HMC09AS A-HMC12AS A-HMH12AS 552116 TUBE ASSY,REVERSING 2035-0034 552202 VALVE,REVERSING 2034-0001 552203-1 VALVE,SERVICE 2033-0012 2033-0013 552203-3 VALVE,SERVICE 2033-0009 2033-0010 553000 HEATER,SUMP 2019-0007 554031 CONDENSER ASSY,BENT...
  • Page 69 5. Outdoor Unit(18K) - 69 -...
  • Page 70 Parts List(18K) REMARK HEAT CONTROLLER Q/TY ("R"means LOCATION NO. PART NAME service parts) PART NO A-HMC18AS A-HMH18AS 261704 TRANSFORMER, POWER 2012-0018 430411 BASE ASSY,WELD[OUTDOOR] 2021-0177 435511 COVER ASSY,CONTROL(OUTDOOR) 2021-0180 435512 COVER ASSY,TOP(OUTDOOR) 2021-0181 437210 PANEL ASSY,FRONT(OUTDOOR) 2021-0183 437212 PANEL ASSY,REAR...
  • Page 71 6. Outdoor Unit(24K) - 71 -...
  • Page 72 Parts List(24K) REMARK HEAT CONTROLLER Q/TY ("R"means LOCATION NO. PART NAME service parts) PART NO A-HMC24AS A-HMH24AS 261704 TRANSFORMER,POWER 2012-0002 430411 BASE ASSY,WELD[OUTDOOR] 2021-0178 435511 COVER ASSY,CONTROL(OUTDOOR) 2021-0180 435512 COVER ASSY,TOP(OUTDOOR) 2021-0181 437210 PANEL ASSY,FRONT(OUTDOOR) 2021-0183 437212 PANEL ASSY,REAR 2021-0186...
  • Page 73 Specifications and performance data subject to change without notice.

Table of Contents