Friedrich SH15L30-C, SH15L30-D, SH20L30-C, SH20L30-D Service Manual

Service Manual

Room Air Conditioners

HG-ServMan (04-09)

Model:

SH15L30-C

SH15L30-D

SH20L30-C

SH20L30-D

TECHNICAL SUPPORT

CONTACT INFORMATION

FRIEDRICH AIR CONDITIONING CO.

Post Ofce 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.

Table Of Contents

Important Safety Information ....................................................................................................................2-4

Introduction ..................................................................................................................................................4

Unit Identication .........................................................................................................................................5

Performance Specications and Installation Data .......................................................................................6

Electrical Data ..............................................................................................................................................7

HazardGard Special Features ......................................................................................................................8

Control Panel ................................................................................................................................................8

Component Denitions .................................................................................................................................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

Troubleshooting .....................................................................................................................................21-23

Wiring Diagram and Schematic ..................................................................................................................24

Warranty .....................................................................................................................................................25

IMPORTANT SAFETY INFORMATION

The information contained in this manual is intended for use by a qualied 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 unqualied persons can result in subjecting the unqualied 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.

Safety warnings have been placed throughout this manual to alert you to potential hazards that may be encountered. If you install or perform service on equipment, it is your responsibility to read and obey these warnings to guard against any bodily injury or property damage which may result to you or others.

We have provided many important safety messages in this manual and on your appliance. Always read and obey all safety messages.

WARNING

CAUTION

All safety messages will tell you what the potential hazard is, tell you how to reduce the chance of injury, and tell you what will happen if the instructions are not followed.

NOTICE

Your safety and the safety of others are very important.

This is a safety Alert symbol.

This symbol alerts you to potential hazards that can kill or hurt you and others.

All safety messages will follow the safety alert symbol with the word “WARNING”

or “CAUTION”. These words mean:

You can be killed or seriously injured if you do not follow instructions.

You can receive minor or moderate injury if you do not follow instructions.

A message to alert you of potential property damage will have the

word “NOTICE”. Potential property damage can occur if instructions

are not followed.

PERSONAL INJURY OR DEATH HAZARDS

ELECTRICAL HAZARDS:

Unplug and/or disconnect all electrical power to the unit before performing inspections, • maintenance, or service.

Make sure to follow proper lockout/tag out procedures.•

Always work in the company of a qualied assistant if possible. •

Capacitors, even when disconnected from the electrical power source, retain an electrical charge • potential capable of causing electric shock or electrocution.

Handle, discharge, and test capacitors according to safe, established, standards, and approved • procedures.

Extreme care, proper judgment, and safety procedures must be exercised if it becomes necessary • to test or troubleshoot equipment with the power on to the unit.

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.

Never operate the A/C unit with wet hands.•

Use air conditioner on a single dedicated circuit within the specied amperage rating. •

Use on a properly grounded outlet only.•

Do not remove ground prong of plug.•

Do not cut or modify the power supply cord.•

Do not use extension cords with the unit.•

Follow all safety precautions and use proper and adequate protective safety aids such as: gloves, • goggles, clothing, adequately insulated tools, and testing equipment etc.

Failure to follow proper safety procedures and/or these warnings can result in serious injury or death. •

REFRIGERATION SYSTEM HAZARDS:

Use approved standard refrigerant recovering procedures and equipment to relieve pressure before • opening system for repair.

Do not allow liquid refrigerant to contact skin. Direct contact with liquid refrigerant can result in minor • to moderate injury.

Be extremely careful when using an oxy-acetylene torch. Direct contact with the torch’s ame or hot • surfaces can cause serious burns.

Make sure to protect personal and surrounding property with re proof materials.•

Have a re extinguisher at hand while using a torch.•

Provide adequate ventilation to vent off toxic fumes, and work with a qualied assistant whenever • possible.

Always use a pressure regulator when using dry nitrogen to test the sealed refrigeration system for • leaks, ushing etc.

Make sure to follow all safety precautions and to use proper protective safety aids such as: gloves, • safety glasses, clothing etc.

Failure to follow proper safety procedures and/or these warnings can result in serious injury or death. •

MECHANICAL HAZARDS:

Extreme care, proper judgment and all safety procedures must be followed when testing, • troubleshooting, handling, or working around unit with moving and/or rotating parts.

Be careful when, handling and working around exposed edges and corners of sleeve, chassis, and • other unit components especially the sharp ns of the indoor and outdoor coils.

Use proper and adequate protective aids such as: gloves, clothing, safety glasses etc.•

Failure to follow proper safety procedures and/or these warnings can result in serious injury or death.•

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 specied amperage rating. •

Connect to a properly grounded outlet only.•

Do not remove ground prong of plug.•

Do not cut or modify the power supply cord.•

Do not use extension cords with the unit.•

Failure to follow these instructions can result in re and minor to serious property damage.•

WATER DAMAGE HAZARDS:

Improper installation maintenance, or servicing of the air conditioner unit, or not following the above • Safety Warnings can result in water damage to personal items or property.

Insure that the unit has a sufcient pitch to the outside to allow water to drain from the unit. •

Do not drill holes in the bottom of the drain pan or the underside of the unit. •

Failure to follow these instructions can result in result in damage to the unit and/or minor to serious • property damage.

INTRODUCTION

This service manual is designed to be used in conjunction with the installation manuals provided with each unit.

This service manual was written to assist the professional HVAC service technician to quickly and accurately diagnose and repair any malfunctions of this product.

This manual, therefore, will deal with all subjects in a general nature. (i.e. All text will pertain to all models).

IMPORTANT:

It will be necessary for you to accurately identify the unit you are servicing, so you can be certain of a proper diagnosis and repair.

(See Unit Identication.)

UNIT IDENTIFICATION

1st Digit – Function

S = Straight Cool, Value Series

H = HazardGard

Model Number Code

S H 15 L 3 0 A

8th Digit – Engineering

Major change

7th Digit – Options

0 = Straight Cool &

3rd and 4th Digit - Approximate

BTU/HR (Cooling)

Heating BTU/Hr capacity listed in the Speci cation/Performance Data Section

RAC Serial Number Identication Guide

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

Year Manufactured A=1 D=4 G=7 K=0 B=2 E=5 H=8 C=3 F=6 J=9

L H G R 00001

6th Digit – Voltage

3 = 230-208 Volts

5th Digit

Alphabetical Modier

Production Run Number

Product Line R = RAC

Month Manufactured A=Jan D=Apr G=Jul K=Oct B=Feb E=May H=Aug L=Nov C=Mar F=Jun J=Sept M=Dec

SPECIFICATIONS AND PERFORMANCE DATA

Cooling Performance Data

EVAPORATOR AIR

TEMP. DEG. F

Discharge

Temp. Drop F. Suction Discharge Amps Cool Amps Heat

Air

CONDENSER

TEMPERATURE

DEG. F

Discharge

Temp

Suction

Temp

Super

Heat

Sub-

Cooling

SH15L30-C 54 26 206 129 61 16 98 76 258 8.2 - 43 28.5 208 / 230 15

SH15L30-D 54 26 206 129 61 16 98 76 258 8.2 - 43 28.5 208 / 230 15

SH20L30-C 46 34 125 196 52 8 28 75 271 10.1 - 52 39.0 208 / 230 15

SH20L30-D 46 34 125 196 52 8 28 75 271 10.1 - 52 39.0 208 / 230 15

Product Specifications

Model

SH15L30

SH20L30

Coolin g Capacity

BTU/h

15000/15000 230/208 7.9/8.7 1765/1765 8.5/8.5 4.0 8-way 375

19800/19500 230/208 10.0/10.97 2200/2167 9.0/9.0 5.7 8-way 375

Electr ical Characteristic s (60 Hertz) Energy

Volts Rate d Amps AHA M Watts

OPERATING

PRESSURES

Efciency

Ratio AHAM

EER

Mois ture

Removal

(Pi nts/ Hr.)

ELECTRICAL RATINGS R-22 REF.

Air Direction

Controls

Locked Rotor

Amps

Charge in OZ.

Room Sid e Air

Circulation

CFM

Voltage

BREAKER

FUSE

60 Hertz

Amps

Installation Information

Window W idth

(Inches)

Min. Max. Height Width Volts - Am ps Net Shipping

⁄

Model Height Width

SH15L30

SH20L30

⁄

Depth

Overall

Depth Hood to Louvers

⁄

Minimum Exten sion

Into Room

⁄

Minimum

Exten sion

Outside

⁄

⁄

Due to continuing engineering research and technology, specications are subject to change without notice. Manufactured under U.S. Design Patent DES 368, 306 decorative front; Utility Patent 5, 622, 058 MAXIMUM outdoor ambient operating temperature is 130°F (54°C). MAXIMUM TEMPERATURE RATING FOR CLASS I, DIVISION 2, GROUPS A,B,C,D

OPERATING TEMPERATURE CODE T3B

Thru-The-Wall

Finishe d Hole

(Inches)

⁄

Circuit Rating

Breaker o r T - D Fuse

250V - 15A 140 152

⁄

250V - 15A 166 179

⁄

Weight

(Lbs.)

ELECTRICAL DATA

Not following the above WARNING could result in re or electically unsafe conditions which could cause moderate or serious property damage.

Read, understand and follow the above warning.

WARNING

ELECTRIC SHOCK HAZARD

Turn off electric power before service or installation.

All electrical connections and wiring MUST be installed by a qualied 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.

NOTICE

FIRE HAZARD

ELECTRICAL REQUIREMENTS

ALL FIELD WIRING MUST MEET THE REQUIREMENTS OF THE NATIONAL ELECTRICAL CODE (ANSI/NFPA 70)

ARTICLE 501.

THE FIELD-PROVIDED CIRCUIT PROTECTION DEVICE (HACR CIRCUIT BREAKER OR TIME DELAY FUSE)

MUST NOT EXCEED THE AMPACITY INDICATED ON THE PRODUCT NAMEPLATE.

IMPORTANT: Before you begin the actual installation of your air conditioner, check local electrical codes and the

information below.

Your air conditioner must be connected to a power supply with the same A.C. voltage and frequency (hertz) as marked on the data plate located on the chassis. Only alternating current (A.C.), no direct current (D.C.), can be used.

An overloaded circuit will invariably cause malfunction or failure of the air conditioner therefore, it is extremely important that the electrical power is adequate. Consult your power company if in doubt.

Model Number Connection Type

SH15 Junction Box 250V-15 Amp

Circuit Rating

Time Delay Fuse

SH20 Junction Box 250V-15 Amp

HAZARDGARD SPECIAL FEATURES

Permanent Split-Capacitor, totally enclosed fan motor

• •

to assure efcient operation even under adverse electrical conditions. Motor has a special stainless steel shaft to resist corrosion and a hermetically sealed overload for arc-free operation.

High capacity compressor with internal hermetically

•

sealed overload.

•

Solid-state printed circuit board insulated against corrosion on conductor paths. Contains transient voltage suppressor to protect controls against transient voltage spikes. Provides solid state switches for arcfree operation.

•

Hot gas bypass low ambient control to permit operation without freezing at outdoor ambient temperatures as low as 45°F (7°C).

•

Environmentally sealed on-off switch and gold plated contacts in thermostat for corrosion resistance.

Copper tubing/aluminum n coils.

•

Galvanized steel cabinet and base pan, all bonderized.

•

Slide-out chassis for easy installation in window or through–the–wall.

•

Extra insulation inside, including completely insulated plenum chamber for quieter, more efcient cooling.

•

Entire unit test run in environmental chamber before crating.

•

Eight–way air ow control for uniform air circulation.

•

Patented electronic control circuit.

•

Condensate drain with exclusive mosquito trap.

15 amp circuit with time-delay fuse required.

•

Accommodates direct wiring.

•

Electrodeposited epoxy primer and alkyd enamel, both oven-baked for an attractive, long-lasting nish.

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.

Long lasting 3/8” (10mm) thick air lter, germicidally treated, easily removed for cleaning.

Control Panel

Function Control (Power)

This switch is a double pole, single throw toggle switch. ON - Turns everything on. OFF - Turns everything off.

Temperature Control

The knob at the bottom is the thermostat which is a cross ambient type used to maintain the desired comfort level. The thermostat reacts only to a change in temperature at the bulb location - turn the knob clockwise to set cooler, counterclockwise for warmer.

Exclusive

Friedrich leads with the rst UL Listed Room Air Conditioners designed to cool living quarters and other enclosures situated in hazardous locations where specic volatile ammable liquids or gases are handled or used with enclosed containers or systems. Friedrich Hazardgard room air conditioners are designed to meet the National Electrical Code, Article 500 requirements for Class I, Division 2, Groups A, B, C, D Hazardous locations, and are the only air conditioners UL Listed for this application. THIS UNIT IS LISTED BY UNDERWRITERS LABORATORIES FOR USE IN CLASS I, DIVISION 2,GROUPS A, B, C, D HAZARDOUS LOCATIONS. Operating Temperature Code: T3B.

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