Sanyo CH1872 User Manual

IMPORTANTThese air conditioners employ newrefrigerant R410A.Pay special attention whenservicing the unit.TECHNICAL & SERVICE MANUALKHS1872 + CH187

Indoor Unit KHS1872MP24Z3-12VFlap MotorType Stepping MotorRating ModelCoil Resistance Ohm(Ambient Temp. 77 °F (25 °C))Each Pair of Terminal : 400 +/-

14Hole in wallBent partNarrow tubeWide tubeRear panelFig. 38Drain capDrain hoseFig. 39I Left-side tubing(1) Lead the tubing and drain hose through the

15To unmount indoor unitPress the 2 LL marks on the lower part of the indoor unitand unlatch the tabs. Then lift the indoor unit andunmount. (Fig. 42)

164. How to Install the Outdoor UnitFirst refer to Section 2. Installation Site Selection.4-1. Wiring Instructions for the Outdoor UnitRegulations o

175. Refrigerant Tubing5-1. Use of the Flaring MethodMany of the conventional split system air conditionersemploy the flaring method to connect refr

185-4. Connecting Tubing between Indoor and Outdoor Unitsa) Tightly connect the indoor side refrigerant tubing exten-ded from the wall with the outdoo

196. Air PurgingAir and moisture remaining in the refrigerant systemhave undesirable effects as indicated below. Therefore,they must be purged comple

20(5) With the vacuum pump still running, close the “Lo”knob of the manifold valve. Then stop the vacuumpump.(6) With the accessory hex wrench, turn t

21How to Test Run the Air ConditionerAfter turning on power to the air conditioner, use the remotecontroller and follow the steps below to conduct the

22I Pump DownPump down means collecting all refrigerant gas in thesystem back into the outdoor unit without losing any ofthe gas. Pump down is used wh

237. Remote Control Unit Installation PositionThe remote control unit can be operated from either anon-fixed position or a wall-mounted position.To e

Indoor Unit KHS2472MP24Z3-12VFlap MotorType Stepping MotorRating ModelCoil Resistance Ohm(Ambient Temp. 77 °F (25 °C))Each Pair of Terminal : 400 +/-

248. Address Switch8-1. Address Setting of the Remote Control UnitThe address can be set in order to prevent interferencebetween remote controllers

SANYO Commercial SolutionsA Division of SANYO North America Corporation1300 Michael Drive, Suite AWood Dale, IL 60191, U.S.A.Sanyo Canada Inc.1-300 Ap

Outdoor Unit CH18722-2-2. Outdoor UnitControl PCBControl Circuit Fuse ControlsPart No.Microprocessor250V 25ACB-CH1872DATA SUBJECT TO CHANGE WITHOUT N

Outdoor Unit CH2472Control PCBControl Circuit Fuse ControlsPart No.Microprocessor250V 25ACB-CH2472DATA SUBJECT TO CHANGE WITHOUT NOTICE.Pints (cc) - M

2-3. Other Component Specifications Indoor Unit KHS1872 KHS2472Outdoor Unit CH1872 CH2472032 50 68 86 104 122 140 158 176 194(0) (10) (20) (30) (

3. DIMENSIONAL DATAIndoor Unit  KHS1872 KHS2472Unit: inch(mm)15

Narrow tube service valvedia.1/4" (6.35)Wide tube service valvedia.1/2" (12.70)4-3/8 2-5/326-17/325-23/323/3226-3/8(670)23/321-13/1634-21/32

Wide tube service valvedia.5/8" (15.88)Narrow tube service valvedia.1/4" (6.35)4-7/165-29/322-1/32 4-1/229-1/8(740)23/321-21/3235-7/16(900)2

Compressor4-wayvalveAccumulatorHigh pressureswitchWide tubeservicevalveWide tubeNarrowtubeservicevalveNarrow tubeHeat exchangerHeat exchangerMufflerCa

5. PERFORMANCE DATA5-1. Temperature ChartsIndoor Unit KHS1872Outdoor Unit CH1872• Check each performance value in test-run mode. Electrical perfor

When WiringELECTRICAL SHOCK CAN CAUSE SEVERE PERSONAL INJURY OR DEATH. ONLY A QUALIFIED, EXPERIENCED ELECTRICIAN SHOULD ATTEMPT TO WIRE THIS SYSTEM.SP

Indoor Unit KHS1872Outdoor Unit CH1872• Check each performance value in test-run mode. Electrical performance values represent a combined indoor/o

Indoor Unit KHS2472Outdoor Unit CH2472Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (60Hz, 230V)(1) Low pressure performance cha

Indoor Unit KHS2472Outdoor Unit CH247270°F (21°C)63°F (17°C)Indoor air temp.73°F (23°C)63°F (17°C)Indoor air temp.73°F (23°C)70°F (21°C)63°F (17°C

Indoor Unit : KHS1872Outdoor Unit : CH1872Power Supply : 230V Single Phase 60Hz< Cooling Capacity >5-2. Cooling CapacityRATING CAPACITY:

Indoor Unit : KHS2472Outdoor Unit : CH2472Power Supply : 230V Single Phase 60Hz< Cooling Capacity >TC : Total Cooling Capacity (BTU/h) S

Indoor Unit : KHS1872Outdoor Unit : CH1872Power Supply : 230V Single Phase 60Hz< Cooling Capacity (Low Ambient) >5-3. Cooling Capacity (L

Indoor Unit : KHS2472Outdoor Unit : CH2472Power Supply : 230V Single Phase 60Hz< Cooling Capacity (Low Ambient) >TC : Total Cooling Capaci

Indoor Unit : KHS1872Outdoor Unit : CH1872Power Supply : 230V Single Phase 60Hz< Heating Capacity >5-4. Heating CapacityTH : Total Heatin

Indoor Unit : KHS2472Outdoor Unit : CH2472Power Supply : 230V Single Phase 60Hz< Heating Capacity >TH : Total Heating Capacity (BTU/h)1.Ra

Horizontal distance (ft.)Axis air velocity (ft./sec.)Vertical distance (ft.)Room air temp. :70°F (21.1°C)Fan speed : HighHeatingHorizontal distance (f

Table of Contents1. OPERATING RANGE2. SPECIFICATIONS2-1. Unit Specifications 2-2. Major Component Specifications 2-3. Other Component Specifica

Horizontal distance (ft.)Axis air velocity (ft./sec.)Vertical distance (ft.)Room air temp. :70°F (21.1°C)Fan speed : HighHeatingHorizontal distance (f

6. ELECTRICAL DATA6-1. Electrical CharacteristicsIndoor UnitKHS1872Outdoor UnitCH1872Indoor Unit Outdoor UnitFan Motor Fan Motor + CompressorPerfo

Indoor UnitKHS2472Outdoor UnitCH2472Indoor Unit Outdoor UnitFan Motor Fan Motor + CompressorPerformance at 230V Single-phase 60HzRating conditions

EVAPORATORTERMINAL BASETO OUTDOOR UNITGRN/YELLAMP10P(WHT)FLAP5P (WHT)FLAPCONNECTORFLAP MOTORREDPNKBLUBRNYEL12345123451234512345AC1 AC2 SIWHTREDWHTWHTW

8FA2-5257-64000-2REACTANCE3211 2 3CMCOMPRESSORMOTORRED (PNK)WHTBLURED(PNK)WHTBLUFERRITECORE3P-CONNECTOR (WHT)RSTWW WWWWCONTROLLER1 2 3 41 21 21 23 455

8FA2-5257-69200-3REACTANCE3211 2 3CMCOMPRESSORMOTORRED (PNK)WHTBLURED(PNK)WHTBLUFERRITECORE3P-CONNECTOR (WHT)UVWWW WWWWCONTROLLER1 2 3 41 21 21 23 455

Test run modeSelf-diagnostic modeAddress setting modeFig. 13Fig. 14Fig. 15TabACL buttonIONbuttonACL (Reset) buttonON/OFFoperationbutton1 HR.TIMERbutto

One of the two types of connectors illustrated at left is used. Theirbasic structure is the same for each. How to DisconnectHold the resin connector c

Emergency operation SENSOR DRYAUTO cooling/heating operation Selecting the operation mode During DRY operation, the system adjusts the room temperat

HIGH POWERNIGHT SETBACKLamp colorsTimer backupThis function acts to raise the power but keeps the AC system in the same operating mode.This function i

10. CHECKING ELECTRICAL COMPONENTS10-1. Measurement of Insulation Resistance10-2. Checking Continuity of Fuse on PCB Ass'y11. REFRIGERANT R410A

Overload prevention during heatingDuring HEAT operation, the temperature of the indoor heat exchanger is used to control the frequency and lessen the

This function prevents the circuit breaker or fuse from operating to open the circuit. This function works when electrical current has increased due t

1HR.TIMERbuttonON/OFFoperationbuttonACL(Reset)buttonIONbutton< Clock display >Test run modeSelf-diagnostics mode9. TROUBLESHOOTING9-1. Precaut

Since the indications cover various units, the corresponding parts listed below may not be present in some models.REMOTE CONTROL receiver(1) OPERAT

(2) If the self-diagnostics function fails to operateCheck the indoor unit.Is the fuse blown?Replace the controller.Replace the circuitboard or the fu

9-3. Checking the Indoor and Outdoor Units(1) Checking the indoor unit(2) Checking the outdoor unit Using the TEST/T-RUN terminalsControlNo. Check ite

(3) Serial Communication Error Identification ProcedureRefer to "Method of Self-Diagnostics" for the self-diagnostics procedure.(3-1) Condit

What is the latest self-diagnosis result ?Condition: E12Defect in the outdoor unitP. C. board.Condition: E01Defect or connection errorin the inter-uni

(3-2) Condition: E12Troubleshooting Serial Communication1. Turn off the power and wait until the power lamp (LED) of the outdoor unit controller is

[Trouble symptom 3] Motor rotates for some time (several seconds), but then quickly stops, when the indoor unit operates.(There is trouble in the sys

95 °F D.B. / 71 °F W.B.67 °F D.B. / 57 °F W.B.80 °F D.B. / 67 °F W.B. _ D.B. / _ W.B.1. OPERATING RANGEMaximumMinimumMaximumMinimum115 °F D.B.0 °

9-4-2. Outdoor Fan MotorThis outdoor DC fan motor contains an internal control PCB. Therefore, it is not possible to measure the coil resistance, and

9-5. Noise Malfunction and Electromagnetic InterferenceAn inverter A/C operates using pulse signal control and high frequencies. Therefore, it is sus

Insulation testerProbeClipGround wireTerminal plateCoppertube ormetallic partClipInsulation testerProbeFig. 1Fig. 2Fig. 3Fig. 4Coppertube ormetallic p

FusePCB Ass'yFig. 5Fig. 6Fuse10-2. Checking Continuity of Fuse on PCB Ass'yRemove the PCB Ass'y from the electrical component box. The

11. REFRIGERANT R410A: SPECIAL PRECAUTIONS WHEN SERVICING UNIT11-1. Characteristics of New Refrigerant R410A11-1-1. What is New Refrigerant R410A?R

Tubing precautionsRefrigerant R410A is more easily affected by dust or moisture compared with R22, thus be sure to temporarily cover the ends of the t

11-3. Tools Specifically for R410A For servicing, use the following tools for R410AGauge manifoldCharging hoseGas leak detectorRefrigerant cylinderCh

11-5. In Case of Compressor Malfunction CAUTIONShould the compressor malfunction, be sure to make the switch to a replacement compressor as quickly a

ValveSingle valveCharge liquid refrigerant with cylinder in up-side-down position.Single valve (with siphon tube)Charge with cylinder in normal positi

Length of tubingEvacuation timeLess than 33 ft. (10 m)More than 10 minutesMore than 33 ft. (10 m)More than 15 minutes11-6. In Case Refrigerant is Le

2. SPECIFICATIONS2-1. Unit SpecificationsIndoor Unit KHS1872Outdoor Unit CH1872< 230V >DATA SUBJECT TO CHANGE WITHOUT NOTICE.Remarks: Rating c

11-7. Charging Additional Refrigerant11-7-1. When Tubes are ExtendedObserve the proper amount of refrigerant as stated in this service manual or the

INSTRUCTION MANUALKHS1872 + CH1872KHS2472 + CH2472(OI-852-6-4180-801-00-2)APPENDIX AA-1

2FeaturesThis air conditioner is an inverter type unit that automatically adjusts capacity as appropriate. Details on these functions are provided bel

3ContentsPageFeatures...2Product Infor

4Installation Location• We recommend that this air conditioner be installed properly by qualified installation technicians in accordance with the Inst

5Names of PartsThis illustration is based on the external view of a standard model.Consequently, the shape may differ from that of the air conditioner

6Unit Display and Operation ButtonREMOTE CONTROL receiver This section picks up infrared signals from the remote control unit (transmitter).OPERATION

7Remote Control Unit (Display)(1) Operation modeAUTO ...HEAT...MILD DRY .

8Remote Control UnitThe illustration above pictures the remote control unit after the cover has been opened.Transmitter When you press the buttons on

9Remote Control Unit (continued)Temperature setting buttons(TEMP.)Press the button to increase the set temperature.Press the button to reduce the

Indoor Unit KHS1872Outdoor Unit CH1872< 208V >DATA SUBJECT TO CHANGE WITHOUT NOTICE.Remarks: Rating conditions are:Cooling: Indoor air temperatu

10Remote Control Unit (continued)Using the Remote Control UnitSENSOR button When you press this button (use a small-tipped object such as a ballpoint

11Using the Remote Control Unit (continued)How to Use the RemoteControl UnitWhen using the remote control unit, always point the unit’s transmitter he

12Operation with the Remote Control Unit1. Automatic OperationThis unit automatically switches between cooling operation and heating operation accordi

13Operation with the Remote Control Unit (continued)2. Manual OperationCheck that the circuit breaker on the power panel is turned on.If the automati

14Operation with the Remote Control Unit (continued)• Choose the best position in the room for the remote control unit, which also acts as the sensor

15Operation with the Remote Control Unit (continued)5. Night Setback ModeNight Setback Mode is used for saving energy.Press the NIGHT SETBACK button

16Operation with the Remote Control Unit (continued) 6. QUIET ModeQUIET Mode is used to reduce the fan sound of the indoor unit. Press the QU

17Special RemarksHow it works? • Once the room temperature reaches the level that was set, the unit’s operation frequency is changed automatically.• D

18Setting the Timer In the descriptions below, the following settings are used for the temperature and time indicator selector button on the bottom fr

19Setting the Timer (continued)3. How to set the ON time(Example) To start operation at 7:10 am.4. How to set DAILY ON/OFF REPEAT timer(Example) To st

Indoor Unit KHS2472Outdoor Unit CH2472< 230V >DATA SUBJECT TO CHANGE WITHOUT NOTICE.Remarks: Rating conditions are:Cooling: Indoor air temperatu

20Using the 1-Hour OFF TimerTips for Energy Saving1. 1-Hour OFF Timer This function causes the unit to operate for one hour and then stop, regardless

21Adjusting the Airflow Direction1. Horizontal The horizontal airflow can be adjusted by moving the vertical vanes with your hands to the left or righ

22Operation without the Remote Control UnitCare and CleaningINDOOR UNIT If you have lost the remote control unit or it has trouble, follow the steps b

23Care and Cleaning (continued)Anti-Mold Filter The anti-mold filter behind the air intake grille should be checked and cleaned at least once every tw

24Care and Cleaning (continued)Air Clean Filter The air clean filter removes dust and dirt from the air, and reduces odors and smoke from tobacco.This

25TroubleshootingIf your air conditioner does not work properly, first check the following points before requesting service. If it still does not work

INSTALLATION INSTRUCTIONSKHS1872 + CH1872KHS2472 + CH2472(II-852-6-4189-989-00-3)APPENDIX BA-2

This air conditioner uses the new refrigerant R410A.Refrigerant service valve size = 5/16"NOTE85264189989003 © SANYO 2007SANYO Commercial Solut

2IMPORTANT! Please Read Before StartingThis air conditioning system meets strict safety and operatingstandards. As the installer or service person, it

31. GeneralThis booklet briefly outlines where and how to install theair conditioning system. Please read over the entire setof instructions for the

Indoor Unit KHS2472Outdoor Unit CH2472< 208V > DATA SUBJECT TO CHANGE WITHOUT NOTICE.Remarks: Rating conditions are:Cooling: Indoor air temperat

41-5. Additional Materials Required for Installation1. Refrigeration (armored) tape2. Insulated staples or clamps for connecting wire(See local codes

Fig. 5dAir intakeConcreteor equalAbout 4" (10 cm)Min. 4" (10 cm)Anchor bolts(4 pcs.)About 1'4" (40 cm)(CH1872)Fig. 5eAir intakeCon

6Set screw only for transportationFig. 6Rear panelmarksFig. 7Left tubingRight tubingDownward tubingRight-rear tubing(recommended)Left-rear tubingFig.

7IndoorsideOutdoorsideHole should be made at a slight downward slant to theoutdoor side.NOTEFig. 10Plastic coverINSIDE OUTSIDEWallSlightanglePVC pipe(

83-4. Remove the Grille to Install the Indoor UnitBasically, these models can be installed and wired with-out removing the grille. If access to any i

93-5. Shape the Indoor Side Tubing(1) Arrangement of tubing by directiona) Right or left tubingCut out the corner of the right/left frame with ahacks

(A)+(B) (A) Power Supply Wiring Length (ft) (C) ControlFuse or Circuit AWG(B) Power Line Length (ft) Line Length (ft)Model (#14) (#12) (#14)Breaker Ca

113-8. Wiring Instructions for Inter-unit Connections(1) Insert the inter-unit wiring (according to local codes)into the through-the-wall PVC pipe. R

12When connecting each power wire to the correspondingterminal, follow the instructions “How to connect wiringto the terminal” and fasten the wire sec

133-9. Mounting(1) To install the indoor unit, mount the indoor unit ontothe 2 tabs on the upper part of the rear plate. (2) Hold down the air discha