Carrier 40MFC Service Manual

Also see for 38MFC: Installation instructions Owner's manual

Contents

Carrier 40MFC Service Manual Manual pdf 1 page image

Service Manual40MFC / 38MFC40MFQ / 38MFQHigh---Wall Ductless Split SystemSizes 009 to 022TABLE OF CONTENTSPAGESAFETY CONSIDERATIONS 1. . . . . . . . . . . . . . . . . . . . . . . . .INTRODUCTION 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .MODEL / SERIAL NUMBER NOMENCLATURE 2. . . . . . . . .STANDARD FEATURES AND ACCESSORIES 3. . . . . . . . . . .SPECIFICATIONS -- COOLING ONLY (MFC) 4. . . . . . . . . . . .SPECIFICATIONS -- HEAT PUMP UNITS (MFQ) 5. . . . . . . . .DIMENSIONS 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SERVICE VALVE LOCATIONS 6. . . . . . . . . . . . . . . . . . . . . . . .CLEARANCES 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SYSTEM OPERATING ENVELOPE 8. . . . . . . . . . . . . . . . . . . .ELECTRICAL DATA 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .WIRING 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .CONNECTION DIAGRAMS 9. . . . . . . . . . . . . . . . . . . . . . . . . .WIRING DIAGRAMS 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .REFRIGERATION CYCLE DIAGRAM 14. . . . . . . . . . . . . . . . .REFRIGERANT LINES 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . .SYSTEM EVACUATION AND CHARGING 15. . . . . . . . . . . . .CONTROL SYSTEM 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SYSTEM SAFETIES 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SEQUENCE OF OPERATION 17. . . . . . . . . . . . . . . . . . . . . . . .MODES OF OPERATION 18. . . . . . . . . . . . . . . . . . . . . . . . . . . .TROUBLESHOOTING 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .APPENDIX 32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SAFETY CONSIDERATIONSInstalling, starting up, and servicing air--conditioning equipmentcan be hazardous due to system pressures, electrical components,and equipment location (roofs, elevated structures, etc.).Only trained, qualified installers and service mechanics shouldinstall, start--up, and service this equipment.Untrained personnel can perform basic maintenance functions suchas cleaning coils. All other operations should be performed bytrained service personnel.When working on the equipment, observe precautions in theliterature and on tags, stickers, and labels attached to theequipment.Follow all safety codes. Wear safety glasses and work gloves. Keepquenching cloth and fire extinguisher nearby when brazing. Usecare in handling, rigging, and setting bulky equipment.Read this manual thoroughly and follow all warnings or cautionsincluded in literature and attached to the unit. Consult localbuilding codes and National Electrical Code (NEC) for specialrequirements. Recognize safety information. This is thesafety--alert symbol !! . When you see this symbol on the unit andin instructions or manuals, be alert to the potential for personalinjury.Understand these signal words: DANGER, WARNING, andCAUTION. These words are used with the safety--alert symbol.DANGER identifies the most serious hazards which will result insevere personal injury or death. WARNING signifies hazardswhich could result in personal injury or death. CAUTION is usedto identify unsafe practices which may result in minor personalinjury or product and property damage. NOTE is used to highlightsuggestions which will result in enhanced installation, reliability, oroperation.! WARNINGELECTRICAL SHOCK HAZARDFailure to follow this warning could result in personalinjury or death.Before installing, modifying, or servicing system, mainelectrical disconnect switch must be in the OFFposition. There may be more than 1 disconnect switch.Lock out and tag switch with a suitable warning label.EXPLOSION HAZARDFailure to follow this warning couldresult in death, serious personal injury,and/or property damage.Never use air or gases containingoxygen for leak testing or operatingrefrigerant compressors. Pressurizedmixtures of air or gases containingoxygen can lead to an explosion.! WARNINGCAUTION!EQUIPMENT DAMAGE HAZARDFailure to follow this caution may result in equipmentdamage or improper operation.Do not bury more than 36 in. (914 mm) of refrigerant pipein the ground. If any section of pipe is buried, there must bea 6 in. (152 mm) vertical rise to the valve connections onthe outdoor units. If more than the recommended length isburied, refrigerant may migrate to the cooler buried sectionduring extended periods of system shutdown. This causesrefrigerant slugging and could possibly damage thecompressor at start--up.INTRODUCTIONThis Service Manual provides the necessary information to service,repair, and maintain the 38--40MF family of Puron air conditionersand heat pumps. Section 2 of this manual is an appendix with datarequired to perform troubleshooting. Use the Table of Contents tolocate a desired topic.