Heat Controller DMC24SB-1 manual

Wall Mounted Mini-Split System Single-Zone Air Conditioning/Heat Pump Service Manual DMC09SB-0/DMH09SB-0 DMC12SB-0/DMH12SB-0 DMC18SB-1/DMH18SB-1 DMC24SB-1/DMH24SB-1 Befor e servicing the unit, r ead the “safety pr ecautions” in this manual. Only for authorized service personnel. HEA T CONTR OLLER, INC.[...]

2 Room Air Conditioner Air Conditioner Ser vice Manual T ABLE OF CONTENTS Safety Precautions .......................................................................................................................................... 3 Dimensions .........................................................................................................[...]

Ser vice Manual 3 Saf ety Precautions Safety Precautions T o pre v ent injur y to the user or other people and proper ty damage, the f ollo wing instructions must be f ollow ed. ■ Incorrect operation due to ignoring instruction will cause har m or damage. The seriousness is classified by the f ollowing indications . ■ Meanings of symbols used i[...]

4 Room Air Conditioner Saf ety Precautions ■ Operation Be sure the installation area does not deteriorate with age. • If the base collapses , the air condi- tioner could f all with it, causing prop- er ty damage, product f ailure, and personal injur y . Install the indoor unit on the wall where the height from the floor s more than 8ft(2.4m) ?[...]

Ser vice Manual 5 Saf ety Precautions Stop operation and close an y win- dow in storm or hurricane bef ore the hurricane arrives. • There is risk of proper ty damage, f ailure of product, or electric shock. Do not open the inlet grill of the product during operation. (Do not touch the electr ostatic filter , if the unit is so equipped.) • There[...]

6 Room Air Conditioner Saf ety Precautions Alwa ys chec k f or gas(refrigerant) leakage after installation or repair of product. • Lo w refrigerant le vels ma y cause product f ailure. Install the drain hose to ensure that water is drained awa y pr operly . • A bad connection ma y cause water leakage. Keep le vel even when installing the produc[...]

Ser vice Manual 7 Saf ety Precautions Use a soft cloth to c lean. Do not use harsh deter gents, sol- vents, etc. • There is risk of fire, electric shock or damage to the plastic par ts of the product. Do not touch the metal parts of the product when remo ving the air fil- ter . They are very sharp! • There is risk of personal injur y . Do not s[...]

8 Room Air Conditioner Dimensions Dimensions D H W Installation plate W mm(inch) 840(33.1) 894(35.2) 894(35.2) H mm(inch) 270(10.6) 295(11.6) 295(11.6) D mm(inch) 153(6.0) 165(6.5) 165(6.5) Model Dimension 9 Btu Series (C/O) 9 Btu Series (H/P) 12 Btu Series Indoor Unit[...]

Ser vice Manual 9 Dimensions D H W Installation plate W mm(inch) 1090(42.9) 1090(42.9) H mm(inch) 300(11.8) 300(11.8) D mm(inch) 178(7.0) 178(7.0) Model Dimension 18 Btu Series 24 Btu Series[...]

10 Room Air Conditioner Dimensions Outdoor Unit 1. 9k, 12k W L2 L3 L1 D H L4 L5 Gas side (3-way valve) Liquid side (2-way valve) MODEL 9k, 12k DIM unit W mm(inch) 770(30.3) H mm(inch) 540(21.3) D mm(inch) 245(9.6) L1 mm(inch) 287(11.3) L2 mm(inch) 64(2.5) L3 mm(inch) 518(20.4) L4 mm(inch) 10(0.4) L5 mm(inch) 100(3.9)[...]

Ser vice Manual 11 Dimensions 2. 18k, 24k W L6 L5 L7 L8 D L1 L2 L9 L10 L3 L4 H MODEL 18k, 24k DIM W mm(inch) 870(34.3) H mm(inch) 655(25.8) D mm(inch) 320(12.6) L1 mm(inch) 370(14.6) L2 mm(inch) 25(1.0) L3 mm(inch) 630(24.8) L4 mm(inch) 25(1.0) L5 mm(inch) 546(21.5) L6 mm(inch) 162(6.4) L7 mm(inch) 162(6.4) L8 mm(inch) 54(2.1) L9 mm(inch) 74.5(2.9)[...]

12 Room Air Conditioner Introduction Intr oduction This symbol alerts you to the risk of electric shoc k. This symbol alerts you to hazar ds that may cause harm to the air condi- tioner . This symbol indicates special notes. NOTICE Symbols Used In This Manual Features Air Intake Vents Air Outlet Vents Connecting Wires Piping Drain Hose Base Plate A[...]

Ser vice Manual 13 Introduction Type "A" screw and plastic anchor Type "B" screw Remote Control Holder Installation plate Figure Figure Name Screw driver Electric Drill Measuring Tape, Knife Hole Core Drill Spanner Torque wrench Ohmmeter Hexagonal wrench Ammeter Gas Leak Detector Thermometer, Level Flaring Tool Set Name Installa[...]

14 Room Air Conditioner Installation Installation Map Base Plate Air Inlet Vents Air Outlet Vents Installation parts you should purchase. Air Discharge Forced Operation Button Operation Indication Lamps/ Signal Receptor Vinyl tape (Wide) • Apply after carrying out a drainage test. • To carry out the drainage test, remove the air filters and pou[...]

Ser vice Manual 15 Installation 1. Check the quality label on the indoor and outdoor unit. 2. Make certain that the refr igerant is R-410A. THIS PRODUCT CONT AINS R-410A REFRIGERANT 1) Diff erent compressor oil - R-410A(P olyol ester) / R-22(Mineral). - Do not mix the e xisting mineral oil. - Do not apply used pipe, tools and gauges co v ered with [...]

16 Room Air Conditioner Outdoor unit 1. If an a wning is built o v er the unit to pre v ent direct sunlight or rain e xposure, make sure that heat radiation from the condenser is not restricted. 2. Ensure that the space around the bac k and sides is more than 10cm(3.9in). The front of the unit should hav e more than 70cm(27.6in) of space. 3. Do not[...]

Ser vice Manual 17 Piping Length And Elev ation • Capacity is based on standard length and maximum allo wance length is on the basis of reliability . • Oil trap should be installed e ver y 5~7meters (16.4~23.0ft). In case more than 5m(16.4ft) Outdoor unit Indoor unit A B A Oil trap Outdoor unit Indoor unit B Pipe Size Capacity (Btu/h) Suction E[...]

18 Room Air Conditioner The wall y ou select should be strong and solid enough to pre v ent vibration 1. Mount the installation plate on the wall with type "A" screws . If mounting the unit on a concrete wall, use anchor bolts . • Mount the installation plate horizontally b y aligning the centerline using a lev el. How T o Mount Install[...]

Ser vice Manual 19 Flaring W ork Cut the pipes and the cable. 1. Use the piping kit accessor y or the pipes purchased locally . 2. Measure the distance between the indoor and the out- door unit. 3. Cut the pipes a little longer than measured distance. 4. Cut the cable 1.5m(59.1in) longer than the pipe length. Burrs remo val 1. Completely remov e al[...]

20 Room Air Conditioner Indoor 1. Prepare the indoor unit's piping and drain hose f or installation through the wall. 2. Remo ve the plastic tubing retainer(see the illus- tration b y) and pull the tubing and drain hose aw a y from chassis. 3. Replace only the plastic tubing holder 1, not the holder 2 in the original position. Route the indoor[...]

Ser vice Manual 21 Wrap the insulation material around the connecting portion. • Ov erlap the connection pipe insulation mater ial and the indoor unit pipe insulation material. Bind them together with vinyl tape so that there is no gap . Route the indoor tubing and the drain hose to the required piping hole position. Plastic bands Insulation mate[...]

22 Room Air Conditioner Insert the connecting cable into the indoor unit. • Don't connect the cable to the indoor unit. • Make a small loop with the cab le for easy con- nection later . T ape the drain hose and the connecting cable . • Connecting cable Connecting the pipings to the indoor unit and the drain hose to drain pipe. • Put a [...]

Ser vice Manual 23 Reroute the pipings and the drain hose across the bac k of the chassis. Reroute the pipings and the drain hose across the bac k of the chassis. Drain hose Vinyl tape(narrow) Pipe Wrap with vinyl tape(wide) • Bundle the piping and drain hose together b y wrapping them with cloth tape o ver the r ange within which they fit into t[...]

24 Room Air Conditioner Installation Inf or mation. F or left piping. F ollow the instruction below . Correct case • Press on the upper side of clamp and unf old the tubing to downw ard slowly . Incorrect case • F ollowing bending type from right to left ma y cause damage to the tubing. Installation[...]

Ser vice Manual 25 Put a couple drops of refrigerant oil on the face of the flare before assemb ling taking care not to add an y contaminants. Align the center of the pipings and suffi- ciently tighten the flare n ut by hand. • The drain hose can be connected at tw o diff erent positions. Use the most con v enient position and, if necessar y , e [...]

26 Room Air Conditioner Connection Of The Cable 1 Indoor Unit Outdoor Unit 2 3 4 1 2 3 4 5 6 G To branch circuit Ground P ower supply a L1 * L2 Connecting cable(Lo w voltage) b T erminal (4P) T erminal (6P) Outdoor unit Wiring Diagram T er minal b lock Over 5mm (0.2") Cov er control Conduit panel Connecting cable P ower supply cord * L1 is neu[...]

Ser vice Manual 27 After the confir mation of the abov e conditions, prepare the wiring as follo ws: 1) Never fail to ha ve an individual po wer cir cuit specifically for the air conditioner . As for the method of wiring, be guided by the cir cuit diagram posted on the inside of control co ver . 2) The screw whic h fasten the wiring in the casing o[...]

28 Room Air Conditioner Chec king The Drainage • P our a glass of water on the drain pan. • Ensure the water flo ws through the drain hose of the indoor unit without an y leakage and goes out the drain e xit. Drain piping • The drain hose should point do wnward f or easy drain flow . Drain pan Drain hose Leakage checking Connecting area drain[...]

Ser vice Manual 29 Forming The Piping Form the piping by wrapping the connect- ing portion of the indoor unit with insula- tion material and secure it with two kinds of vinyl tapes. • If you w ant to connect an additional drain hose , the end of the drain outlet should be routed abov e the ground. Secure the drain hose appro- priately . In cases [...]

30 Room Air Conditioner Air Purging Air purging With V acuum Pump Lo Hi Indoor unit Outdoor unit Manifold valve Charge hose Nitrogen gas cylinder(in vertical standing position) Pressure gauge Air and moisture remaining in the refrigerant system hav e undesirable eff ects as indicated below . • Pressure in the system rises. • Operating current r[...]

Ser vice Manual 31 Ev acuation • Connect the charge hose end described in the preceding steps to the v acuum pump to e vacuate the tubing and indoor unit. Confir m the "Lo" knob of the manif old v alv e is open. Then, run the vacuum pump . The operation time f or ev acuation v aries with tub- ing length and capacity of the pump . The f [...]

32 Room Air Conditioner Charging ■ Each outdoor unit is f actor y charged (nameplate charge) f or the e v aporator as well as a 7.5m(25ft) line set. Any time a line set is used either shor ter or longer then the nominal 7.5m(25ft) line set length the refrigerant charge has to be adjusted. ■ Whether the line set is made shor ter or longer you mu[...]

Ser vice Manual 33 Outside ambient TEMP. The pressure of the gas side service valve 95°F(35°C) 8.5~9.5kg/cm 2 G(120~135 P.S.I.G.) Settlement of outdoor unit ■ Anchor the outdoor unit with a bolt and nut(ø10mm(0.39in) tightly and horizontally on a concrete or rigid mount. ■ When installing on the wall, roof or rooftop , anchor the mounting ba[...]

Operation Function of Contr ols Operation • DISPLA Y 1) C/O Model Operation Indicator • ON while in appliance operation, OFF while in appliance pause . • Flashing while in disconnection or shor t in Ther mistor . (3 sec off / 0.5 sec on) Timer Indicator • ON while in timer mode (on/off), OFF when timer mode is completed or canceled. Comp. R[...]

Ser vice Manual 35 Operation • While in compressor off , the indoor f an repeats low airflow speed and pause. • While the intak e air temp is between compressor on temp . and compressor off temp., 10-min dehu- midification operation and 4-min compressor off repeat. Compressor ON T emp . ➲ Setting T emp+0.5°C(0.9°F) Compressor OFF T emp . ?[...]

36 Room Air Conditioner ■ Airflow Speed Selection • The airflo w speed of the indoor f an is set to high, medium, low , or chaos (auto) by the input of the airflow speed selection k e y on the remote control. ■ Sleep Timer Operation • When the sleep time is reached after <1,2,3,4,5,6,7,0(cancel) hr> is input b y the remote control whi[...]

Ser vice Manual 37 Operation ■ Forced operation • Operation procedures when the remote control can't be used. • The operation will be star ted if the pow er button is pressed. • If you w ant to stop operation, re-press the b utton. • While in f orced operation, the ke y input by the remote control has no eff ect and the buzz er sound[...]

38 Room Air Conditioner Self-diagnosis Function Displa y Function 1. Heating Model 2. Cooling Model • Cooling, Soft Dry, Fan, Heating • Cooling, Soft Dry, Fan • Hot-start, Deice Operation Indicator Deicer Indicator Operation Indicator Compressor on Indicator 3sec 3sec 3sec (once) Error Code 1 Error Displa y LED (Indoor body operation LED) Err[...]

Ser vice Manual 39 Operation Remote Contr ol Operations The controls will look like the f ollowing. 1. ST ART/ST OP BUTT ON Operation star ts when this button is pressed and stops when the button is pressed again. 2. OPERA TION MODE SELECTION BUTT ON Used to select the operation mode . 3. ROOM TEMPERA TURE SETTING BUTT ONS Used to select the room t[...]

40 Room Air Conditioner Disassembl y Indoor Unit Disconnect the unit from power supply before mak- ing 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. • Remove the securing screws. • To remove the [...]

Ser vice Manual 41 Disassembly 2. T o remove the Contr ol Bo x. • Remove securing screws. • Pull the control box out from the chassis carefully. 3. T o remove the Disc harge Grille. • Unhook the discharge grille and pull the discharge grille out from the chassis carefully. 4. T o remove the Ev aporator . • Remove 3 screws securing the evapo[...]

42 Room Air Conditioner • 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. T o remove the Motor Co ver • Remove 2 securing screw. • Pull the motor cover out from the chassis carefully. 6. T o remove the Cr oss-Flow Fan • Loosen the screw securi[...]

Ser vice Manual 43 T roubleshooting Guide T r oub leshooting Guide INDOOR UNIT OUTDOOR UNIT INDOOR UNIT OUTDOOR UNIT HEAT EXCHANGE (EVAPORATOR) HEAT EXCHANGE (EVAPORATOR) HEAT EXCHANGE (CONDENSER) HEAT EXCHANGE (CONDENSER) COMPRESSOR COMPRESSOR ACCUMU LATOR GAS SIDE GAS SIDE 3-WAY VALVE LIQUID SIDE LIQUID SIDE 3-WAY VALVE CAPILLARY TUBE CAPILLARY T[...]

44 Room Air Conditioner T roubleshooting Guide 2-wa y , 3-way V alve 2-way Valve (Liquid Side) 3-way Valve (Gas Side) Shaft position Shaft position Service port Closed Closed Closed (with valve cap) (with valve cap) (with cap) Open Closed Open (counter-clockwise) (clockwise) (push-pin or with vacumm pump) Open Open Closed (with valve cap) (with val[...]

Ser vice Manual 45 T roubleshooting Guide • Procedure (1) Confirm that both the 2-way and 3-way valves are set to the open position. – Remove the v alve stem caps and confirm that the v alve stems are in the r aised posi- tion. – Be sure to use a he xagonal wrench to operate the v alv e stems. (2) Operate the unit for 10 to 15 minutes. (3) St[...]

46 Room Air Conditioner T roubleshooting Guide Balance Refrigerant of the 3-way V alve (Gas leakage) • Procedure (1) Confirm that both the 2-way and 3-way valves are set to the bac k seat. (2) Connect the charge set to the 3-way valve ’ s por t. – Leav e the valv e on the charge set closed. – Connect the charge hose to the ser vice por t. ([...]

Ser vice Manual 47 T roubleshooting Guide Ev acuation (All amount of refrigerant leaked) • Procedure (1) Connect the vacuum pump to the center hose of char ge set center hose (2) Evacuation for appr oximatel y one hour . – Confir m that the gauge needle has mov ed tow ard -76 cmHg (v acuum of 4 mmHg or less). (3) Close the valve (Lo side) on th[...]

48 Room Air Conditioner T roubleshooting Guide Gas Charging (After Evacuation) • Procedure (1) Connect the charge hose to the charging cylinder . – Connect the charge hose which you dis- connected from the v acuum pump to the v alve at the bottom of the cylinder . – If y ou are using a gas cylinder , also use a scale and re v erse the cylinde[...]

Ser vice Manual 49 T roubleshooting Guide Additional gas c harging (Gas leakage) • When refrigerant is insufficient b y leakage, recharge the unit with the refrigerant up to normal oper- ating suction pressure. • Use the gr aph or the equation below to get oper ating suction pressure according to indoor and out- door temperature . Suction press[...]

50 Room Air Conditioner T roubleshooting Guide T rouble anal ysis 1. Check temperature diff erence between intake and discharge air and operating current. Temp. Difference Temp. difference : approx. 0°F(0°C) Current : less than 80% of rated current Temp. difference : approx. 14°F(8°C) Current : less than 80% of rated current Temp. difference : [...]

Ser vice Manual 51 T roubleshooting Guide Electr onic P ar ts (9k model) Pr oduct does not operate at all. (* Refer to Electr onic Contr ol Device dra wing and Schematic diagram.) Turn off Main Power Turn on Main Power Does "beeping" sound is made from the Indoor Unit? Primarily, the operating condition of Micom is OK. Check the voltage o[...]

52 Room Air Conditioner T roubleshooting Guide Electr onic P ar ts (18k model) Pr oduct does not operate at all. (* Refer to Electr onic Contr ol Device dra wing and Schematic diagram.) Turn off Main Power Turn on Main Power Does "beeping" sound is made from the Indoor Unit? Primarily, the operating condition of Micom is OK. Check the vol[...]

Ser vice Manual 53 T roubleshooting Guide The pr oduct 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. Caused by other parts except the remote controller Cause by the remote controller When the mark( ) is[...]

54 Room Air Conditioner T roubleshooting Guide Compressor/Outdoor F an are unable to drive.(9k Model) 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 [...]

Ser vice Manual 55 T roubleshooting Guide Compressor/Outdoor F an are unable to drive.(18k Model) 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 [...]

56 Room Air Conditioner T roubleshooting Guide When indoor F an does not operate . Check connecting condition of the CN-MOTOR CON- NECTOR Does the voltage of terminal of CN-DC/DC CONNECTOR in Indoor unit corresponds to the values in the table of page 56 Do the voltage of terminal of CN-DC/DC CONNECTOR in Outdoor unit corresponds to the values in th[...]

Ser vice Manual 57 T roubleshooting Guide When V er tical 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 • Check the soldering con[...]

58 Room Air Conditioner T roubleshooting Guide • 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. Check for the commun[...]

Ser vice Manual 59 T roubleshooting Guide The phenomena in case of connecting err or INDOOR UNIT Connector Type Condition Open and connecting error Open Open Open Open Short between terminals ( and ) of ROOM-TH. Short between terminals ( and ) of PIPE-TH. Short between terminals • The same as the phenomenon of Outdoor Unit. • The up/down vane d[...]

60 Room Air Conditioner OUTDOOR UNIT Connector Type Condition OPEN • PWB pattern is damaged when applying the power. Connecting reversely Connecting reversely OPEN OPEN OPEN OPEN Connecting error ( ) Connecting error ( ) Connecting error ( ) Connecting error ( ) Connecting error ( ) Connecting error ( ) • All functions stop. • The operation w[...]

Ser vice Manual 61 Schematic Diagram Schematic Dia gram Electric Contr ol Device ■ Indoor[...]

62 Room Air Conditioner Schematic Diagram ■ Outdoor (9k, 12k)[...]

Ser vice Manual 63 ■ Outdoor (18k, 24k) Schematic Diagram[...]

64 Room Air Conditioner Schematic Diagram Wiring Diagram ■ Indoor Unit Models: 9k, 12k, 18k, 24k[...]

Ser vice Manual 65 ■ Outdoor Unit Models: 9k(C/O) Models: 12k(H/P), 12k(C/O , H/P) Schematic Diagram[...]

66 Room Air Conditioner Models: 18k(C/O) Models: 18k(H/P), 24k(C/O , H/P) Schematic Diagram[...]

Ser vice Manual 67 Schematic Diagram Components Location ■ Indoor MAIN P .W .B ASSEMBL Y • T OP VIEW • BO TT OM VIEW[...]

68 Room Air Conditioner ■ Outdoor(9k, 12k) • T OP VIEW • BO TT OM VIEW Schematic Diagram[...]

Ser vice Manual 69 Schematic Diagram ■ Outdoor(18k, 24k) • T OP VIEW • BO TT OM VIEW[...]

70 Room Air Conditioner DISPLA Y ASSEMBL Y – 6870A90240D – 6870A90240E Schematic Diagram[...]

Ser vice Manual 71 Product Specifications Pr oduct Specifications Power Supply Ø, V, Hz Cooling Capacity BTU/h Input W Running Current A COMP. Locked Rotor AMP. A S.E.E.R Air Circulation m 3 G/min(cfm) Moisture Removal l/h(pts/hr) Noise Level Indoor, High dB(A) (Sound Pressure, 1m) Med dB(A) Low dB(A) Outdoor, Max dB(A) Features Temperature Contro[...]

72 Room Air Conditioner Product Specifications Cooling & Heating Items Unit DMH09SB-0 DMH12SB-0 DMH18SB-1 DMH24SB-1 Power Supply ø, V, Hz Cooling Capacity BTU/h Heating Capacity BTU/h Input Cooling W Heating W Running Current Cooling A Heating A COMP. Locked Cooling A Rotor AMP. Heating A S.E.E.R H.S.P.E Air Circulation m 3 /min(cfm) Moisture [...]

Specifications and performance data subject to change without notice. HEA T CONTROLLER, INC. 1900 WELL WOR TH A VENUE • JA CKSON, MICHIGAN 49203 THE QU ALITY LEADER IN CONDITIONING AIR P/No.:3828A20390T[...]