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Summary of Contents for Friedrich Hazardgard SH15L30-C
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Page 1: Service Manual
Service Manual Model: SH15L30-C Room Air Conditioners SH15L30-D SH20L30-C SH20L30-D HG-ServMan (04-09) - Page 2 TECHNICAL SUPPORT CONTACT INFORMATION FRIEDRICH AIR CONDITIONING CO. Post Office Box 1540 · San Antonio, Texas 78295-1540 4200 N. Pan Am Expressway · San Antonio, Texas 78218-5212 (210) 357-4400 · FAX (210) 357-4490 www.friedrich.com Printed in the U.S.A.
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Page 3: Table Of Contents
Table Of Contents Important Safety Information ........................2-4 Introduction ..............................4 Unit Identification ............................5 Performance Specifications and Installation Data ..................6 Electrical Data ..............................7 HazardGard Special Features ........................8 Control Panel ..............................8 Component Definitions ..........................9 Component Testing ..........................10-11 Sealed System Refrigeration Repairs ......................12 Refrigerant Charging ..........................12-15 Compressor Checks ..........................16-17 Compressor Replacement ..........................18 Routine Maintenance ..........................19-20... -
Page 4: Important Safety Information
IMPORTANT SAFETY INFORMATION The information contained in this manual is intended for use by a qualified service technician who is familiar with the safety procedures required for installation and repair, and who is equipped with the proper tools and test instruments required to service this product. Installation or repairs made by unqualified persons can result in subjecting the unqualified person making such repairs as well as the persons being served by the equipment to hazards resulting in injury or electrical shock which can be serious or even fatal. - Page 5 • Do not spray or pour water on the return air grille, discharge air grille, evaporator coil, control panel, and sleeve on the room side of the air conditioning unit while cleaning. • Electrical component malfunction caused by water could result in electric shock or other electrically unsafe conditions when the power is restored and the unit is turned on, even after the exterior is dry.
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Page 6: Introduction
PROPERTY DAMAGE HAZARDS FIRE DAMAGE HAZARDS: • Read the Installation/Operation Manual for this air conditioning unit prior to operating. • Use air conditioner on a single dedicated circuit within the specified amperage rating. • Connect to a properly grounded outlet only. •... -
Page 7: Unit Identification
UNIT IDeNTIfICATION Model Number Code S H 15 L 3 0 A 8th Digit – Engineering Major change 1st Digit – Function S = Straight Cool, Value Series 7th Digit – Options 0 = Straight Cool & H = HazardGard 6th Digit –... -
Page 8: Performance Specifications And Installation Data
Discharge Locked Rotor 60 Hertz DEG. F Temp. Drop F. Suction Discharge Amps Cool Amps Heat Charge in OZ. Amps Amps SH15L30-C 28.5 208 / 230 SH15L30-D 28.5 208 / 230 SH20L30-C 10.1 39.0 208 / 230 SH20L30-D 10.1 39.0... -
Page 9: Electrical Data
eleCTRICAl DATA WARNING ELECTRIC SHOCK HAZARD Turn off electric power before service or installation. All electrical connections and wiring MUST be installed by a qualified electrician and conform to the National Electrical Code and all local codes which have jurisdiction. Failure to do so can result in personal injury or death. -
Page 10: Hazardgard Special Features
Friedrich Air Conditioning quality has been proven by more than 25 years of successful experience from the Gulf of Mexico to the searing sands of the Arabian desert. Control Panel Function Control (Power) This switch is a double pole, single throw toggle switch. -
Page 11: Component Definitions
COMPONeNT DefINITIONS A. Mechanical components Plenum assembly Diffuser with directional louvers used to direct the conditioned airflow. Blower wheel Attaches to the indoor side of the fan motor shaft and is used for distributing unconditioned, room side air through the heat exchanger and delivering conditioned air into the room. Slinger fan blade Attaches to the outdoor side of the fan motor shaft and is used to move outside air through the condenser coil, while slinging condensate water out of the base pan and onto the condenser coil, thus lowering the temperature and... -
Page 12: Component Testing
COMPONeNT TeSTING FAN MOTOR CAPACITORS A 230 volt single phase permanent split capacitor motor WARNING is used to drive the evaporator blower and condenser fan. A running capacitor is wired across the start and run terminals of the motor. ELECTRIC SHOCK HAZARD Turn off electric power before servicing. - Page 13 THERMOSTAT LOW AMBIENT BYPASS VALVE A cross ambient thermostat is used to maintain the WARNING desired comfort level. The thermostat reacts only to a change in temperature at the bulb location. Important to the successful operation of the unit is the position of the HIGH PRESSURE HAZARD sensing bulb in relation to the evaporator.
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Page 14: Sealed System Refrigeration Repairs
SeAleD RefRIGeRATION SYSTeM RePAIRS IMPORTANT ANY SEALED SYSTEM REPAIRS TO COOL-ONLY MODELS REQUIRE THE INSTALLATION OF A LIQUID LINE DRIER. ALSO, ANY SEALED SYSTEM REPAIRS TO HEAT PUMP MODELS REQUIRE THE INSTALLATION OF A SUCTION LINE DRIER. EQUIPMENT REQUIRED: High Pressure Gauge - (0 - 400 lbs.) 1. - Page 15 Method Of Charging / Repairs The acceptable method for charging the HazardGard system is the Weighed in Charge Method. The weighed in charge method is applicable to all units. It is the preferred method to use, as it is the most accurate. The weighed in method should always be used whenever a charge is removed from a unit such as for a leak repair, compressor replacement, or when there is no refrigerant...
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Page 16: Undercharged Refrigerant Systems
WARNING WARNING HIGH PRESSURE HAZARD ELECTRIC SHOCK HAZARD Turn off electric power before service or Sealed Refrigeration System contains refrigerant installation. and oil under high pressure. Extreme care must be used, if it becomes Proper safety procedures must be followed, necessary to work on equipment with power and proper protective clothing must be worn applied. -
Page 17: Restricted Refrigerant System
Restricted Refrigerant System Troubleshooting a restricted refrigerant system can be at the metering device entrance to the evaporator. The difficult. The following procedures are the more common evaporator in a partial restriction could be partially frosted problems and solutions to these problems. There are two or have an ice ball close to the entrance of the metering types of refrigerant restrictions: Partial restrictions and device. -
Page 18: Compressor Checks
COMPReSSOR CHeCKS external Overload WARNING WARNING ELECTRIC SHOCK HAZARD Turn off electric power before service or BURN HAZARD installation. Extreme care must be used, if it Certain unit components operate at becomes necessary to work on equipment with temperatures hot enough to cause burns. power applied. -
Page 19: Single Phase Resistance Test
Single Phase Resistance Test Remove the leads from the compressor terminals and set the ohmmeter on the lowest scale (R x 1). Touch the leads of the ohmmeter from terminals common to start (“C” to “S”). Next, touch the leads of the ohmmeter from terminals common to run (“C”... -
Page 20: Compressor Replacement
COMPReSSOR RePlACeMeNT Recommended procedure for compressor After all refrigerant has been recovered, disconnect suction and discharge lines from the compressor and replacement remove compressor. Be certain to have both suction WARNING and discharge process tubes open to atmosphere. Carefully pour a small amount of oil from the suction RISK OF ELECTRIC SHOCK Unplug and/or disconnect all electrical power stub of the defective compressor into a clean... -
Page 21: Routine Maintenance
ROUTINe MAINTeNANCe WARNING NOTICE ELECTRIC SHOCK HAZARD Units are to be inspected and serviced by qualified service Turn off electric power before service or personnel only. Use proper protection on surrounding installation. property. Failure to follow this notice could result in moderate or serious property damage. - Page 22 ROUTINe MAINTeNANCe (Continued) Periodically (at least yearly or bi-yearly): inspect all control components, both electrical and mechanical, as well as the power supply. Use proper testing instruments (voltmeter, ohmmeter, ammeter, wattmeter, etc.) to perform electrical tests. Use an air conditioning or refrigeration thermometer to check room, outdoor and coil operating temperatures.
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Page 23: Troubleshooting
TROUBleSHOOTING Problem Possible Cause Action Power disconnected. Check power source. Replace fuse, reset breaker. If repeats, check fuse Branch circuit fuse blown or circuit or breaker size. Check for shorts in unit wiring and breaker tripped. components. Unit does not run Loose or disconnected wiring at Check wiring &... - Page 24 TROUBleSHOOTING Problem Possible Cause Action Compressor attempts to start Allow a minimum of 3 minutes to allow pressures before system pressures are to equalize before attempting to start. equalized. Check voltage with unit operating. Check for other appliances on the circuit. Unit should be on Low or fluctuating voltage.
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Page 25: Troubleshooting
TROUBleSHOOTING Problem Possible Cause Action Defective switch (On-Off) Check continuity across terminals 2 and 3. Fan capacitor open. Test with capacitor analyzer. Replace if bad. Check power and if okay, perform continuity test. Inoperative fan motor. Replace if bad. Fan motor does Incorrect wiring of fan circuit. -
Page 26: Wiring Diagram And Schematic
CONTROl COOl ONlY MODelS: SH15l30-C SH15l30-D SH20l30-C SH20l30-D... -
Page 27: Warranty
LIMITED ONE YEAR PARTS WARRANTY 1. Limited warranty – One year. Friedrich warrants that it will provide a replacement for any part of this HazardGard Room Air Condi- tioner found defective in material or workmanship for a period of one (1) year from the date of original purchase. - Page 31 TECHNICAL SUPPORT CONTACT INFORMATION FRIEDRICH AIR CONDITIONING CO. Post Office Box 1540 · San Antonio, Texas 78295-1540 4200 N. Pan Am Expressway · San Antonio, Texas 78218-5212 (210) 357-4400 · FAX (210) 357-4490 www.friedrich.com Printed in the U.S.A.
- Page 32 FRIEDRICH AIR CONDITIONING CO. Post Office Box 1540 · San Antonio, Texas 78295-1540 4200 N. Pan Am Expressway · San Antonio, Texas 78218-5212 (210) 357-4400 · FAX (210) 357-4490 www.friedrich.com HG-ServMan (04-09) Printed in the U.S.A.
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