Sanyo XMS0972, XMS1272 4. REFRIGERANT FLOW DIAGRAM

O.D. 3/8" (9.52 mm)

O.D. 1/4" (6.35 mm)

O.D. 1/2" (12.7 mm)

O.D. 1/4" (6.35 mm)

4. REFRIGERANT FLOW DIAGRAM

4-1. Refrigerant Flow Diagram

Indoor UnitXMS0972 & PNR-XS1872

XMS1272 & PNR-XS1872

Indoor UnitXS1872 & PNR-XS1872

Cooling cycle

Indoor unit

Cooling cycle

Indoor unit

Heat exchanger

Strainer

Heat exchanger

Strainer

Contents

Main INDOOR UNIT : XMS0972&PNR-XS1872 XMS1272&PNR-XS1872 XS1872&PNR-XS1872 DC INVERTER MULTI-SYSTEM AIR CONDITIONER Semi-Concealed Type Indoor Unit TECHNICAL & SERVICE MANUAL FILE NO. SAFETY PRECAUTIONS Warning Caution TABLE OF CONTENTS () Page APPLICABLE MULTI-OUTDOOR UNITS 1. OPERATING RANGE 2. SPECIFICATIONS 2-1. Unit Specifications Indoor Unit XMS0972 & PNR-XS1872 2-1-1. Indoor Unit XMS0972 & PNR-XS1872 Page Indoor Unit XMS1272 & PNR-XS1872 Page Indoor Unit XS1872 & PNR-XS1872 Indoor Unit (Body) XMS0972 2-2. Major Component Specifications 2-2-1. Indoor Unit Indoor Unit (Body) XMS1272 Indoor Unit (Body) XS1872 2-3. Other Component Specifications 3. DIMENSIONAL DATA Indoor Unit XMS0972 & PNR-XS1872 XMS1272 & PNR-XS1872 XS1872 & PNR-XS1872 A View 24-19/32 (625) Center of 4. REFRIGERANT FLOW DIAGRAM 4-1. Refrigerant Flow Diagram 5. ELECTRICAL DATA 5-1. Electric Wiring Diagrams 2 3 1 Indoor UnitXMS0972 & PNR-XS1872 XMS1272 & PNR-XS1872 XS1872 & PNR-XS1872 6. MAINTENANCE 6-1. Disassembly Procedure 6-1-1. Remove the air intake grill. 6-1-2. Disconnect the connectors in the control box. Warning 6-1-3. Remove the ceiling panel. 6-1-4. Remove the indoor air temperature sensor. 6-1-5. Remove the power box and control box. Page 6-1-6. Remove the main body lower section. 6-1-7. Remove the heat exchanger sensor. 6-1-8. Remove the drain pump and float switch. 6-1-9. Remove the turbo fan and fan motor. 6-1-10. Remove the heat exchanger. Emergency operation SENSOR DRY PAM- control 7. FUNCTIONS 7-1. Operation Functions HIGH POWER NIGHT SETBACK Lamp colors Timer backup Freeze prevention * 7-2. Protective Functions 8. TROUBLESHOOTING 8-1. Precautions before Performing Inspection or Repair NOTE 8-2. Method of Self-Diagnostics Follow the procedure below to perform detailed trouble diagnostics. Page 8-3. Checking the Indoor and Outdoor Units (3) Serial Communication Error Identification Procedure Refer to "Method of Self-Diagnostics" for the self-diagnostics procedure. < Before the Operation > (3-1) Condition: E01 Warning Caution Page (3-2) Condition: E12 8-4. Trouble Diagnosis of Fan Motor 8-4-1. Indoor Fan Motor 8-5. Noise Malfunction and Electromagnetic Interference (1) Noise malfunction (2) Electromagnetic interference Page XMS0972 XMS1272 This air conditioner uses the new refrigerant R410A. 2 Page Page NAMES OF PARTS UNIT DISPLAY AND OPERATION BUTTON Air Intake Air Outlet Remote Control Unit Page Page (FAN) USING THE REMOTE CONTROL UNIT HOW TO INSTALL BATTERIES 1. 2. 3. 1. Operation 2. Adjusting the Fan Speed 3. Fan Only 10 4. Night Setback Mode In Cooling and DRY Mode: ( and ) 5. HIGH POWER Mode How it works? Clicking sound is heard from the air conditioner 11 1. 2. 3. 1. USING THE 1-HOUR OFF TIPS FOR ENERGY SAVING Do not Do ADJUSTING THE AIRFLOW OPERATION WITHOUT THE When the air conditioner is not running CARE AND CLEANING Ceiling panel (Indoor Unit) Cleaning the flaps 14 Air filter Air filter Latch Air intake grille hinge How to remove the filter 1. TROUBLESHOOTING OPERATING RANGE WIRED REMOTE CONTROLLER Temperature Indoor air temperature Outdoor air temperature COOLING Max. 95 F DB / 71F WB 115 F DB Min. 67 F DB / 57F WB 67 F DB Page XS1271 XS1872 This air conditioner uses the new refrigerant R410A. 2 Page IMPORTANT NAMES OF PARTS UNIT DISPLAY AND OPERATION BUTTON Air Intake Air Outlet Remote Control Unit Page Page (FAN) USING THE REMOTE CONTROL UNIT HOW TO INSTALL BATTERIES 1. 2. 3. 1. Operation 2. Adjusting the Fan Speed 3. Fan Only 10 4. Night Setback Mode In Cooling and DRY Mode: ( and ) 5. HIGH POWER Mode How it works? Clicking sound is heard from the air conditioner 11 1. 2. 3. 1. USING THE 1-HOUR OFF TIPS FOR ENERGY SAVING Do not Do ADJUSTING THE AIRFLOW OPERATION WITHOUT THE When the air conditioner is not running CARE AND CLEANING Ceiling panel (Indoor Unit) Cleaning the flaps 14 Air filter Air filter Latch Air intake grille hinge How to remove the filter 1. TROUBLESHOOTING OPERATING RANGE WIRED REMOTE CONTROLLER Page This air conditioner uses the new refrigerant R410A. Refrigerant service valve size = 5/16" Contents INSTALLATION INSTRUCTIONS Inverter Split System Air Conditioner For Indoor Unit IMPORTANT! Please Read Before Starting If Necessary,Get Help In Case of Improper Installation SPECIAL PRECAUTIONS When Wiring 1. General 2. Installation Site Selection Page 3. How to Install the Indoor Unit Page NO Indoor unit Page Page Page Page 4. How to Test Run the Air Conditioner 5. Remote Control Unit Installation Position 6. Address Switch 7. Connecting a Home Automation Device 8. Installation Check Sheet Page STK-RCS-7TWSUA Page Page Page 5 (AUTO) (HEAT) (FAN) 1. Automatic Operation (only for COOL/DRY/HEAT Model) 2. Manual Operation STEP 2 STEP 1 STEP 2 STEP 3 STEP 1 STEP 4 STEP 5 3. Adjusting the Fan Speed 4. Fan Only 5. Night Setback Mode A. In Cooling and DRY Mode: ( and ) B. In Heating Mode: ( ) (only for COOL/DRY/HEAT Model) 5. Backup function 1. ON TIME OFF TIME Present time 2. Page Page IParts supplied with the remote controller IRemote controller installation guidelines IHow to install the remote controller INSTALLATION INSTRUCTIONS Page IHow to wire the remote controller IHow to Test Run the Air Conditioner