Sanyo CH0971, CH1271 service manual Left-side tubing, Switching drain hose and drain cap, Drain cap

Page 93

Left-side tubing

(1)Lead the tubing and drain hose through the wall, allowing sufficient length for connection. Then bend the tubing using a tube bender to make the attach- ment. (Fig. 38)

(2)Switch the drain hose and drain cap.

Switching drain hose and drain cap

(a)Locate the drain hose and the drain cap. (Fig. 39)

(b)Remove the screws fastening the drain hose on the right side, and pull out the drain hose to remove it. (Fig. 39)

(c)Apply moderate force to pull off the drain cap on the left side. (If you cannot pull it off by hand, use a long-nose pliers.)

(d)Reattach the drain hose to the left side and the drain cap to the right side. (Fig. 40a)

Drain hose

Slide the drain hose fully onto the drain pan outlet until the drain hose edge is pushed into the insula- tion. Check that the screw holes in the drain bracket and the drain pan outlet are aligned and securely in contact, then fasten them with the screw. (After attaching the drain hose, check that it is attached securely.) (Fig. 40c)

Drain cap

Use a Phillips screwdriver to push the drain cap in firmly. (If it is difficult to push in, wet the cap with water first.)

(3)Install the indoor unit on the rear panel.

(4)Connect the tubing and wiring led inside from out- doors.

(5)After completing a leak test, bundle the tubing together with armoring tape and store it inside the tubing storage area at the back of the indoor unit and hold it with clamps. (Figs. 40a and 41)

Rear panel

Hole in wall

Bent part

Wide tube

 

Narrow tube

Fig. 38

Drain cap

Drain hose

Fig. 39

Drain hose

Clamp

Drain cap

Fig. 40a

Screw hole

Drain pan outlet

Insulation

 

 

Drain bracket

Drain bracket

Drain hose

 

 

 

Drain hose

Screw

 

Fig. 40c

 

Fig. 40b

 

 

Refrigerant tubing

 

 

Inter-unit wiring

 

Conduit

 

Fig. 41

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Contents Indoor Model No. Product Code No DC Inverter Split System AIR ConditionerPlease Read Before Starting Table of Contents Checking Electrical Components Indoor Air Intake Temp Outdoor Air Intake Temp Operating RangeUnit Specifications SpecificationsKHS0971 CH0971CH1271 KHS1271Indoor Unit Major Component SpecificationsCB-KHS1271 Microprocessor 250V 3A Outdoor Unit CH0971 Outdoor UnitCompressor External FinishOutdoor Unit CH1271 Indoor heat exchanger sensor Other Component SpecificationsCompressor temp sensor Outdoor air temp sensorIndoor Unit KHS0971 Dimensional Data21-3/16 10-13/16 Refrigerant Flow Diagram Refrigerant Flow DiagramInsulation of Refrigerant Tubing After a tube has been insulated To break or crackPerformance Data Temperature ChartsHigh pressure performance chart Indoor Unit KHS1271 Outdoor Unit CH1271 493 Tube service Cooling Capacity Power Supply 115V Single Phase 60Hz Cooling Capacity11,900 BTU/h Cooling Capacity Low Ambient SHC Sensible Heat Capacity BTU/h Power Supply 115V Single Phase 60Hz Heating Capacity Heating CapacityTH Total Heating Capacity BTU/h 14,300 BTU/h Cooling Vertical distance ft Air Throw Distance ChartsRoom air temp F 26.7C Fan speed High Horizontal distance ft Heating Vertical distance ftHeating Electrical Characteristics Electrical DataCH0971 Cooling Electric Wiring Diagrams Indoor Unit KHS0971 KHS12718FA2-5257-71600-0 WHT RED Outdoor Unit CH0971 CH1271Address Setting of the Remote Control Unit MaintenanceON/OFF operation button HR.TIMER button ACL Reset button ION buttonHow to Connect How to DisconnectOperation Functions FunctionsEmergency operation Auto cooling/heating operationLamp colors Timer backupProtective Functions Compressor discharge temperature controlOverload prevention during heating Cold-air prevention during heatingDefrost detection and release CT Peak current cut-off controlReverse-Cycle Defrosting Troubleshooting Precautions before Performing Inspection or RepairMethod of Self-Diagnostics Indoor Unit Self-diagnostics LampsChecking the Indoor and Outdoor Units Using the TEST/T-RUN terminalsReplace the controller Replace the circuit board or the fuseOff Blinking Illuminated Serial Communication Error Identification ProcedureBefore the Operation Condition E01Terminal board Outdoor Unit Condition E12 Outdoor Fan Motor Trouble Diagnosis of Fan MotorNoise malfunction Noise Malfunction and Electromagnetic InterferenceElectromagnetic interference Locations most susceptible to noise Trouble CorrectionChecking Electrical Components Power Supply CordMeasurement of Insulation Resistance Measurement of Insulation Resistance for Electrical PartsChecking Continuity of Fuse on PCB Assy Characteristics of New Refrigerant R410A Refrigerant R410A Special Precautions When Servicing UnitWhat is New Refrigerant R410A? CharacteristicsChecklist before Servicing Tools Specifically for R410A Tubing Installation ProceduresCase of Compressor Malfunction Procedure for Replacing CompressorUnit. This may cause Never charge a large amountDamage to the compressor ExampleCase Refrigerant is Leaking Welding leaking pointsRecharging Charging Additional Refrigerant When Tubes are ExtendedRetro-Fitting Existing Systems Use of Existing UnitsOI-852-6-4180-802-00-2 Features Contents Alert SymbolsProduct Information Installation Location Safety InstructionsElectrical Requirements Outdoor Unit Names of PartsQuiet lamp Unit Display and Operation ButtonRemote Control Unit Display Remote Control Unit Hour OFF TimerOn Time Heat AutoDRY CoolTemperature Display Selector Using the Remote Control UnitHow to Install Batteries Button Time Display Selector buttonUsing the Remote Control Unit Operation with the Remote Control Unit StepPress the ON/OFF operation button Press the Mode selector button and select the desired mode Operation with the Remote Control UnitPress the TEMP. setting buttons to change the temperature Set the FAN Speed selector button to the setting you wantAdjusting the Fan Speed Night Setback Mode is used for saving energy Cooling and DRY ModeQuiet Mode Special Remarks Setting the Timer Example To set to 1030 pmOperation Indication How to set the on time Example To start operation at 710 am Setting the TimerTo cancel a timer program Press the Cancel button 1030 pm 710 am 1100 am Present timeSetting procedure Using the 1-Hour OFF TimerCancellation procedure Operation together with the Daily ON/OFF Repeat TimerCool Sweep DRY FAN Heat Adjusting the Airflow DirectionOperation without the Remote Control Unit Care and CleaningWhen the air conditioner is not running Cleaning Care and CleaningGrasp both ends of the air Intake grilleNegative ion generator metal electrodes inside plastic case Follow the steps below when the generator has become dirtyOperating Range TroubleshootingTrouble Possible Cause Remedy Max DB / 71 F WB Min DB / 57 F WBAppendix B Installation Instructions Contents Installation InstructionsPlease Read Before Starting Accessories Supplied with Unit Table Tools Required for Installation not suppliedGeneral Optional Copper Tubing KitInstallation Site Selection Additional Materials Required for InstallationAvoid Hole of the bottom plate Solid base must not coverTrical wiring or conduits are How to Install the Indoor UnitRemove the Rear Panel from the Unit Make a HoleInstall the Rear Panel on the Wall If Wooden WallIf Block, Brick, Concrete or Similar Type Wall How to replace the grille Remove the Grille to Install the Indoor UnitShape the Indoor Side Tubing Wiring Instructions General precautions on wiringWiring System Diagram Recommended Wire Length and DiameterWiring Instructions for Inter-unit Connections How to connect wiring to the terminal For Indoor Unit For Outdoor Unit For solid core wiring or F-cableFor stranded wiring Right-side tubing MountingSwitching drain hose and drain cap Left-side tubingDrain cap Tubing and wiring to the out Do not supply power toTo unmount indoor unit Unit or operate it until allHow to Install the Outdoor Unit First refer to . Installation Site SelectionWiring Instructions for the Outdoor Unit To 0.5 mm Adjust so that the amount of tube Flaring Procedure with a Flare ToolRefrigerant Tubing Use of the Flaring MethodFinishing the Installation Connecting Tubing between Indoor and Outdoor UnitsInsulation of Refrigerant Tubing To prevent heat loss and wet floors due to dripping of conAir Purging with a Vacuum Pump for Test Run Air PurgingTem. The valve core is similar to Those used in automobile tiresHex wrench before Be sure to completely insertThis may cause the refriger Ant gas to leak. In order toOperation lamp Timer lamp Quiet lamp ION lamp How to Test Run the Air ConditionerPump Down Basic Functions of the Service ValvesMounting on a Wall Remote Control Unit Installation PositionAddress Setting of the Remote Control Unit Address Switch