Friedrich R-410A User Manual

R-410A ModelsService Manual 2 0 1 1HG-ServMan (1-11)SH15M30*SH20M30*Cool OnlyHazardous DutyRoom Air Conditioner* Last character may vary.

Permanent Split-Capacitor, totally enclosed fan motor to assure effi cient operation even under adverse electrical conditions. Motor has a s

COMPONENT DEFINITIONSA. Mechanical componentsB. Electrical componentsC. Hermetic componentsPlenum assembly Diffuser with directional louvers used to d

FAN MOTOR SWITCH, ON-OFF Line side SOLID STATE RELAY Load side LED indicates contacts closed when litFAN MOTORA 230 volt single phase permanent

RANGE: Thermostat (Part No. 618-225-02) 60° F ( ± 2° ) to 90° F( ± 4° ) SENSING BULB LOCATION THERMOSTAT A cross ambient thermostat is used

• R-410A pressure is approximately 60% higher than R-22 pressure.• R-410A cylinders must not be allowed to exceed 125 F, they may leak or rupture.•

Proper refrigerant charge is essential to proper unit operation. Operating a unit with an improper refrigerant charge will result in reduced performan

3. Install a process tube to sealed system. 4. Make necessary repairs to system.5. Evacuate system to 200 microns or less. 6. Weigh in refrigeran

Undercharged Refrigerant Systems An undercharged system will result in poor performance (low pressures, etc.) in both the heating and cooli

Restricted Refrigerant System Troubleshooting a restricted refrigerant system can be diffi cult. The following procedures are the more common pro

Locked Rotor Voltage (L.R.V.) Test Locked rotor voltage (L.R.V.) is the actual voltage available at the compressor under a stalled condition. Single P

Table Of ContentsImportant Safety Information ...

Many compressor failures are caused by the following conditions: 1. Improper air fl ow over the evaporator. 2. Overcharged refrigerant sy

3. After all refrigerant has been recovered, disconnect suction and discharge lines from the compressor and remove compressor. Be certa

ROUTINE MAINTENANCE AIR FILTERClean the unit air intake fi lter at least every 300 to 350 hours of operation. Clean the fi lters with a mild detergent

Discharge Air PlenumSlotTabLatchesReturn air grilleLatchSlotTabReturn Air GrilleROUTINE MAINTENANCE (Continued) Do not drill holes in the botto

ROOM AIR CONDITIONER UNITPERFORMANCE TEST DATA SHEETDATE: _______________ MODEL:_______________ SERIAL:________________ YES N

TROUBLESHOOTINGProblem Possible Cause Possible SolutionPossible SolutionPossible SolutionPossible SolutionPossible SolutionUnit does not runPower disc

Problem Possible Cause Possible SolutionPossible SolutionPossible SolutionCompressor attempts to start, or runs for short periods only. Cycles on over

Problem Possible Cause Possible SolutionPossible SolutionPossible SolutionPossible SolutionFan motor does not run.Defective switch (On-Off) Check cont

ELECTROMECHANICAL CONTROLCOOL ONLY MODELS:SH15M30*SH20M30*27*Last character may vary.

Friedrich Air Conditioning Company10001 Reunion Place, Suite 500San Antonio, TX 782161-800-541-6645www.friedrich.comHAZARDGARD®ROOM AIR CONDITIONERSLI

IMPORTANT SAFETY INFORMATIONThe information contained in this manual is intended for use by a qualifi ed service technician w

TECHNICAL SUPPORT CONTACT INFORMATION29FRIEDRICH AIR CONDITIONING CO. 10001 Reunion Place, Ste. 500, San Antonio, TX 78216(210) 546-0500 877-599-5665

HG-ServMan (1-11) FRIEDRICH AIR CONDITIONING CO. 10001 Reunion Place, Ste. 500, San Antonio, TX 78216P 210-546-0500 | F 210-546-0731 www.friedrich.c

• 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 c

PROPERTY DAMAGE HAZARDSFIRE DAMAGE HAZARDS:• Read the Installation/Operation Manual for this air conditioning unit prior to operating.• Use air cond

Serial Number Decade Manufactured L=0 C=3 F=6 J=9 A=1 D=4 G=7 B=2 E=5 H=8 A A A R 00001 Production Run Number Year Man

UL Listed for use in Class I, Division 2, Groups A, B, C and D hazardous locations.Hazardgard is specically designed to cool living quarters, storag

SPECIFICATIONS AND PERFORMANCE DATA7Due to continuing engineering research and technology, specL¿cations are subject to change without notice. Manufac

ELECTRICAL DATAELECTRICAL REQUIREMENTSELECTRIC SHOCK HAZARD WARNINGTurn off electric power before service or installation.All electrical connect