Friedrich 2009, 2008 User Manual

Service Manual

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WallMaster® Thru-the-Wall

WM-ServMan (04-09)

Tem

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Models 2009 2008

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

WallMaster Model Number Code and Serial Number Identication ............................................................5

Performance Data / Sleeve and Chassis Dimensions .................................................................................6

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

Functional Components ...............................................................................................................................8

How to Operate the Electronic WallMaster Room Air Conditioner ..........................................................9-10

Remote Control ..........................................................................................................................................11

Electronic Control: Operation, Testing, Error Codes, Rebooting ..........................................................12-13

How to Operate the WallMaster with Rotary Controls, Control Testing ......................................................14

Electronic Control Heat Pump Operation ...................................................................................................15

Components Testing ..............................................................................................................................15-17

Refrigeration System Sequence of Operation ............................................................................................18

Sealed System Refrigeration Repairs / Charging ..................................................................................19-22

Hermetic Components Check ................................................................................................................23-26

Reversing Valve Description/Operation ......................................................................................................24

Testing the Coil and Reversing Valve ....................................................................................................25-26

Compressor Checks ..............................................................................................................................27-28

Compressor Replacement .....................................................................................................................29-30

Routine Maintenance .............................................................................................................................31-32

General Troubleshooting .......................................................................................................................33-39

Wiring Diagrams ....................................................................................................................................40-44

Installation Accessories ..............................................................................................................................45

Installation Instructions for “WSC” Sleeve .............................................................................................46-47

Installation Instructions for Bafe Adapter Kit .............................................................................................48

Seal Gasket Installation Instructions ...........................................................................................................49

Installation Instructions for Internal Drain Kit (IDK) .....................................................................................50

Assembly and Installation Instructions for Drain Kit (DK) ...........................................................................51

Installation Instructions for Sub-Base .........................................................................................................52

Installation Instructions for Architectural Grille Model AG-48-49 ...........................................................53-54

Warranty .....................................................................................................................................................55

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

Return Air Grille

Decorative Front

WSC

Sleeve

AB123456C3567

MODEL# WS07A10B

Airflow

Rotate

Discharge Grille

1" Diameter Plug

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.)

1” Diameter Plug

FRIEDRICH WALLMASTER MODEL NUMBER CODE

W S 08 B 1 0 B

1st DIGIT - FUNCTION

W = Thru-The-Wall, WallMaster Series

2nd DIGIT - TYPE

S = Straight Cool E = Electric Heat Y = Heat Pump

3rd & 4th DIGITS - APPROXIMATE BTU/HR (Cooling)

Heating BTU/HR capacity listed in Specications/Performance Data Section

5th DIGIT - ALPHABETICAL MODIFIER

6th DIGIT - VOLTAGE

1 = 115 Volts 3 = 230-208 Volts

7th DIGIT

0 = Straight Cool & Heat Pump Models

ELECTRIC HEAT MODELS

3 = 3 KW Heat Strip, Nominal

8th DIGIT

Major Change

SERIAL NUMBER IDENTIFICATION 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

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

L C J R 00001

Production Run Number

Product Line

X = WallMaster

2008 / 2009 PERFORMANCE DATA

ENERGY STAR

modelsSpecifications

Model

Cooling

Capacity

BTU/h

Heating

Capacity

BTU/h

Volts

Rated

Cooling

Amps

Cooling

Watts

Heating

Amps

Heating

Watts

Energy

Eciency

Ratio

EER

Moisture Removal Pints/Hr.

Room

Side Air

Circulation Sleeve

Weight

Lbs.

Ship/Net

WALLMASTER

WS08B10A 8000 — 115 6.8 762 — — 10.5 1.3 245 WSC 97/93

WS10B10A 10000 — 115 8.7 954 — — 10.5 2.4 245 WSC 107/103

WS14B10A 13500 — 115 12.0 1415 — — 9.5 3.3 295 WSC 116/112

WS10B30A 10000/10000 — 230/208 4.6/5.0 1005/996 — — 10.0/10.0 2.1 260 WSC 105/101

WS13B30B 12500/12000 — 230/208 6.3/6.7 1404/1379 — — 8.9/8.7 3.3 280 WSC 113/109

WS16B30A 15800/15000 — 230/208 7.8/8.5 1756/1705 — — 9.0/8.8 4.2 290 WSC 123/119

WE10B33C 10000/10000 11000/9100 230/208 4.6/5.0 1005/996 16.0/14.7 3550/2950 10.0/10.0 2.1 260 WSC 107/103

WE13B

33C 12500/12000 11000/9100 230/208 6.3/6.7 1404/1379 16.0/14.7 3550/2950 8.9/8.7 3.3 280 WSC 115/111

WE16B33C 15800/15000 11000/9100 230/208 7.8/8.5 1756/1705 16.0/14.7 3550/2950 9.0/8.8 4.2 290 WSC 125/121

WY10B33C 10100/9800 8100/7800 230/208 4.6/4.8 1013/976 3.9/4.0 857/821 10.0/10.0 2.5 230 WSC 111/107

WY13B33C 12500/12100 10400/10000 230/208 6.4/6.8 1389/1352 5.4/5.7 1182/1136 9.0/9.0 3.2 280 WSC 120/116

EVAPORATOR AIR

COOLING

PERFORMANCE

DATA*

WS08B10A-D 55 25 55 55 127 165 61 102 18 25 87 281 7.1 36.2 20.5 257 1100 15 WS08B10A-F 55 25 55 55 125 179 74.5 102 18 25 87 281 6.9 36.2 18.9 257 1100 15 WS10B10A-D 52 28 53 51 128 176 68 105 16 24 79 293 9.0 45.0 22.0 248 1100 15 WS14B10A-D 52 28 52 52 128 179 63 99 14 28 82 297 12.4 58.0 44.9 293 1300 15 WS14B10A-E 52 28 52 52 128 179 63 99 14 28 82 297 12.4 58.0 44.9 293 1300 15 WS10B30A-D 55 25 53 57 131 179 68 106 16 23 77 289 4.6 26.0 22.5 235 1100 15 WS13B30B-E 50 30 52 50 131 180 61 103 13 24 81 305 6.9/6.5 27.4 36.5 288 1280 15 WS13B30B-F 50 30 52 50 131 180 61 103 13 24 81 305 6.9/6.5 27.4 36.5 288 1280 15 WS16B30A-D 52 28 51 53 121 154 54 99 18 32 74 315 7.7 35.0 47.6 292 1421 15 WS16B30A-E 52 28 51 53 121 154 54 99 18 32 74 315 7.7 35.0 47.6 292 1421 15 WE10B33A-C 53 27 54 52 126 180 82 99 16 31 82 289 4.6 15.2 45.0 38.0 225 1074 20 WE10B33C-A 53 27 54 52 126 180 82 99 16 31 82 289 4.6 15.2 45.0 38.0 225 1074 20 WE13B33B-D 50 30 52 50 131 180 61 103 13 24 81 305 6.9/6.5 15.7 27.4 36.5 288 1280 20 WE13B33C-A 50 30 52 50 131 180 61 103 13 24 81 305 6.9/6.5 15.7 27.4 36.5 288 1280 20 WE13B33B-E 50 30 52 50 131 180 61 103 13 24 81 305 6.9/6.5 15.7 27.4 36.5 288 1280 20 WE16B33A-C 52 28 51 53 121 174 57 100 18 30 74 315 6.5 16.1 35.0 35.2 281 1305 20 WE16B33C-A 52 28 51 53 121 174 57 100 18 30 74 315 6.5 16.1 35.0 35.2 281 1305 20 WE16B33A-D 52 28 51 53 121 174 57 100 18 30 74 315 6.5 16.1 35.0 35.2 281 1305 20 WY10B33A-C 53 27 54 52 WY10B33C-A 53 27 54 52 126 180 66 99 16 31 82 225 4.6 4 / 15.2 26.0 38.0 225 1074 20 WY10B33A-D 53 27 54 52 126 180 66 99 16 31 82 225 4.6 4 / 15.2 26.0 38.0 225 1074 20

WY13B33A-C 52 29 52 51 127 180 64 103 16 29 80 300 6.5 5.6 / 15.7 27.4 35.0 260 1200 20 WY13B33C-A 52 29 52 51 127 180 64 103 16 29 80 300 6.5 5.6 / 15.7 27.4 35.0 260 1200 20

WY13B33A-D 52 29 52 51 127 180 64 103 16 29 80 300 6.5 5.6 / 15.7 27.4 35.0 260 1200 20

* Rating Conditions: 80 degrees F, room air temp. & 50% relative humidity, with 95 degree F, outside air temp & 40% relative humidity

TEMP. DEG. F

Discharge

Air

EVAPORATOR TEMP.

DEG. F

Temp.

T(in) T(out) Suction Discharge Amps Cool Amps Heat

Drop F.

CONDENSER

TEMPERATURE

DEG. F

Discharge

Suction

Liquid

Temp

126 180 66 99 16 31 82 225 4.6 4 / 15.2 26.0 38.0 225 1074 20

Temp

Super Heat

Sub-

Cooling

OPERATING

PRESSURES

ELECTRICAL RATINGS R-22 REF.

Locked Rotor

Amps

Charge in

OZ.

Evap CFM

Motor

RPM

BREAKER

FUSE

60 Hertz

Amps

Sleeve / Chassis Dimensions

Thru- the-wall Finishe d Hole

Height Width

Model Height Wid th Depth

WSC Sleeve Chassis

16 3/4" 27" 16 3/4" 23" 7 1/2" 9/16" 17 1/4" 27 1/4"

15 3/4" 26 1/2" 21" – – – – –

Depth

with

Front

Minimum Exten sion

Into Room

Minimum

Exten sion

Outside

ELECTRICAL DATA

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

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.

Wire Size Use ONLY wiring size recommended for single outlet branch circuit.

Fuse/Circuit Breaker Use ONLY the correct HACR type and size fuse/circuit breaker. Read electrical ratings on unit’s

rating plate. Proper circuit protection is the responsibiity of the homeowner.

Grounding Unit MUST be grounded from branch circuit through service cord to unit, or through separate

ground wire provided on permanently connected units. Be sure that branch circuit or general purpose outlet is grounded.

Receptacle The eld supplied outlet must match plug on service cord and be within reach of service cord.

Do NOT alter the service cord or plug. Do NOT use an extension cord. Refer to the table above for proper receptacle and fuse type.

Plug/Outlet/Circuit Rating

Model Numbers

WS08 B10A, WS10B10A, WS14B10A

WS10B30A , WS13B30A, WS16B30A

WE10, WE13, WE16 WY10, WY13

Circuit Rating

Breaker or T-D Fuse

125V - 15A 5 - 15P

250V - 15A 6 - 15P

250V - 20A 6 - 20P

Plug Face

(NEMA#)

Wall Outlet

Appearance

The consumer - through the AHAM Room Air Conditioner Certication Program - can be certain that the AHAM Certication Seal accurately states the unit’s cooling and heating capacity rating, the amperes and the energy efciency ratio.

*HACR: Heating Air Conditioning and Refrigeration

FUNCTIONAL

MPONENT

A. Mechanical components

Drain pan valve Temperature-sensitive valve that opens up to drain off condensate water when the outside temperature falls below 40°F and closes when the outside temperature reaches 60°F

ffuse

r with directional louver

s used to direc

t th

e cond

ition

ed airﬂow.

wer w

heel

Attaches to the indoor side of the fan motor shaft and is used for distributing unconditioned, room side air though the heat

xchanger and delivering conditioned air into the room

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 pressures within th

e coil.

.Electrical component

Thermost

sed to maintain the speciﬁ ed room side comfort leve

sed to regulate the operation of the fan motor, the compressor or to turn the unit off. For troubleshooting, refer to the

wiring diagrams and schematics in the back of this service manual

educes line current and steadies the voltage supply, while greatly improving the torque characteristics of the fan motor

and compressor motor.

switch

When engaged, it sends the power supply to the fan motor through the thermostat, which allows for a cycle-fan operation

nMotor

ual-shafted fan motor operates the indoor blower wheel and the condenser fan blade simultaneously.

lenoi

sed to energize the reversing valve on all heat pump units.

lectric resistance heater

sed to providebetter thermostat and room air temperature control.

C. Hermetic components

otorized device used to compress refrigerant through the sealed system.

Afour-way switching device used on all heat pump models to change the ﬂ ow of refrigerant to permit heating or cooling.

heck valv

A pressure-operated device used to direct the ﬂ ow of refrigerant to the proper capillary tube, during either the heating or

ooling cycle

p y

A cylindrical meter device used to evenly distribute the ﬂ ow of refrigerant to the heat exchangers (coils.

)

How to operate the Friedrich WallMaster

To start unit

,elc at pec er reporp a otni deggulp dna dellatsni si renoitidnoc ria ruoy fI it is ready to go. The rst time the unit is started, the compressor will delay for three minutes. See Automatic Component Protection on the following page.

Touch the Power button once. The unit will automatically be in Cool mode with the temperature set at 75°F (24°C) and the fan speed at F1, the sleep setting.

To set mode of operation

When you rst turn the unit on, it will be in the Cool mode with constant fan.

On WS cool-only models, touch the Mode buton once to activate the MoneySaver

( WS models only. S ee item 14 for Money Saver

instructions on WY/WE models).

MoneySaver

is a feature that cycles the fan with the com pres -

sor so that the fan does not run all the time. This saves energy

i dim uh ed sevorpmi dna

revaSyenoM .noit ac

will also run to test

the temperature if the off cycle is too long. Or you may prefer

,naf tnatsnoc ot nruter oT( .tnem evom ria erom rof naf tnats noc

touch the Mode button two more times).

In order to run the fan by itself, do the following:

On WY/WS heat-cool models, touch the Mode button once to

activate the Fan Only feature. The Fan O nly setting w ill circulate air in the room without the compressor coming on.

Continuing from MoneySaver

mode, touch the Mode button

once to activate the Fan Only feature (WS cool-only models).

To adjust temperature

Use the Mode b utton to s elect either the Cool or MoneySaver

function (or Heat for WY/WE heat-cool models)

COOLER – Touch the

button to lower the room air temperature.

Figure 1: WS Model cool-only control panel Figure 2: WY/WE Model heat-cool control panel

2 3 4

10 11 12

WARMER – Touch the

Smart Fan

Money

Press both the

Power

Set

Cool

Fan Only

Heat

Clock

Start Time

Stop Time

Temp/Hour

Fan

Speed

Timer

On/Off Saver

Mode

button to raise the room air temperature.

and buttons at the same time to switch the temperature from Fahrenheit (°F) to Celsius (°C). Repeat Step 7 to switch from °C back to °F.

To adjust fan speed

Touch the Fan Speed button to see the current setting. To uch

it again t o change s peed. F1 i s the lowest setting (SLEEP

SETTING / LOW), F2 is MEDIUM, and F3 is HIGH.

To activate Smart Fan (WS cool-only models)

There is a fourth option, SF, when selecting the fan speed. This is

the SMART FAN function. SMART FAN DOES NOT OPERAT E IN CONJUNCTION WITH THE FAN ONLY MODE.

To activate Smart Fan (WY/WE heat-cool models)

Press the Smart Fan button to activate the Smart Fan. The light

will indicate that this feature is in use.

Smart Fan will adjust the fan speed automatically to maintain the desired comfort level. For example, if the outside doors in your home are opened for an extended period of time, or more people enter a room, Smart Fan may adjust to a higher fan speed to compensate for the increased heat load. This keeps you from having to adjust the fan speed on your own.

To set the hour clock

Touch the Set Hour b utton to see the c urrent s etting. T he

.)ylno ruoh( emit etamixorppa eht si deyalpsid si taht rebmun

Use the

TO SET A.M. AND P. M. ACCORDINGLY. (P. M. is indicated by

a red light in the upper left corner of the display).

and buttons to change the settings. BE SURE

To set the timer

NOTE: Set the HOUR CLOCK (Set Hour) before attempting to set timer functions.

NOTE: If the unit is unplugged or the power is interrupted, the HOUR must be reset or the Timer On/Off will not function when desired.

You can set the Start Time and Stop Time a minimum of one hour

apart, and a maximum of 23 hours apart.

After setting the time, press the Set Hour button once (Start

light on). Use the

unit will START.

After selecting the Start Time, press the Set Hour button once.

(Stop Light on). Use the that the unit will STOP. After selecting the stopping time, press

and

buttons to select the time

the Set Hour button once.

Press the Timer On/Off button (light turns on) to activate the

timer function. To deactivate this function, press the Timer On/ Off button once again (light turns off). Once the on and off times have been selected, they will remain in memory and cycle daily until changed.

Automatic component protection

Your unit is equipped with Automatic Component Protection.

To protect the c ompressor of the unit, there is a three minute delay if you turn the unit off or if power is interrupted. The fan will not be affected. Also, if you switch from Cool mode to Fan Only mode, and switch back to Cool mode, there is a three-minute delay before the compressor comes back on.

To Activate Money Saver (WY/WE models)

Press the Money Saver button to activate the M oney S aver

feature. The light will indicate the Money Saver is in use.

eht taht emit eht tceles ot snottub

MoneySaver

sor so that the fan does not run all the time. This saves energy

the temperature if the off cycle is too long. Or you may prefer

touch the Mode button two more times).

is a feature that cycles the fan with the com pres

i fidim uh ed sevorpmi dnarevaSyenoM .noit ac

will also run to test

,naf tnatsnoc ot nruter oT( .tnem evom ria erom rof naf tnats noc

Figure 3: WY/WE heat-cool model remote control

Additional RC1 wireless remote controls can be purchased from your Friedrich dealer.

Using the remote control

Figure 4: WS Models Only

Additional RC1 wireless remote controls can be purchased from your Friedrich dealer.

To start unit

POWER - Press the Power button once. The unit will automatically start in the mode and fan speed it was last left on.

To set mode of operation

COOL - Press the Cool button to automatically switch the operat- ing mode to COOL.

FAN ONLY - Press the Fan Only button if you want to run the fan only.

HEAT (WY/WE m odels only) - P ress the Heat button to automatically switch the operating mode to HEAT.

MoneySaver

the MoneySaver compressor so that the fan does not run all the time.

- Press the Money Saver

feature. This feature cycles the fan with the

button to activate

To adjust temperature

WARMER - Press the

COOLER - Press the

Warmer button to raise the temperature sett

Cooler button to lower the temperature se

To adjust fan speed

FAN SPEED - Press the Fan Speed button to see the current setting. Press again to change the fan speed. F1 is the lowest setting (SLEEP / LOW), F2 is MEDIUM, F3 is HIGH, and SF is the SMART FAN setting.

To set the hour clock

SET HOUR CLOCK - Press the Set Hr. button once to see the current clock setting. Continue pressing the button until y ou arrive at the current time (Hour only). Minutes are not shown on the display. Make sure that the A.M. / P. M. setting is correct.

To set the timer

NOTE: You can set the START and STOP times a minimum of one hour apart, and a maximum of 23 hours apart.

TIMER START - Press Start to view the current start time for cool- ing. Continue pressing the START button until you arrive at the start time you desire. The start time for cooling will then be set.

TIMER STOP - Press the Stop button. Continue pressing the STOP button until you arrive at the stop time you desire. The stop time for cooling will then be set.

TIMER ON / O FF - P ress the O n/Off button (under Timer

ing.

Operation .remit eht )ffo thgil( etavitcaed ro )no thgil( etavitca ot ) Once the on and off times have been selected, they will remain in memory and cycle daily until changed.

NOTE: If the unit is unplugged or the power is interrupted, the Set Hr. function must be reset or the Timer On/Off function will not work.

ELECTRONIC CONTROL PANEL

Temp/Hour

Cool

Money Saver

Fan Only

Clock

Start Time

Stop Time

Power

Fan

Speed

Mode

Timer

On/Off

Set

Hour

Figure 5: “WS” Cooling only models

Electronic Control Panel

TESTING THE ELECTRONIC CONTROL

CHECKING ROOM TEMPERATURE

1. Check the room temperature at the electronic control

pad by pressing at the same time, the Fan Speed button and the Temp/Hour button on the WS/WE/ WY models (see gures 5 and 6).

2. The indoor temperature will display for 10 seconds. Indoor temperature can be viewed in all modes, including the Test Mode. The display can be changed back to the SET temperature by pressing any key (except the Power (on/off button) or it can do so automatically after 10 seconds have elapsed.

Figure 6: “WE”/”WY” heat/cool models

Electronic Control Panel

The LEDs for Set/Hour: “Star t Tim e” and “Stop Time” will blink 1 bps while Test Mode is active.

Test Mode has a duration of 90 minutes. Test Mode can be activated under any function, including Off. Test Mode is cancelled by pressing the Power (on/off) button, unplugging the unit, or when the 90 minutes times

out.

Test Mode settings are factory default of: Unit operation On, MoneySaver On, Cool Mode, 60 degrees F, speed fan on High. “Timer” and “Set Hour” features are non-functional.

ACTIVATING TEST MODE

Activate Test Mode by press ing at th e same tim e, the Mode button and the Temp/Hour button on on the WS/WE/ WY models (see gures 5 and 6).

ERROR CODE MODE

Error Code Mode is used to display all error codes stored since reset. It is a sub-mode of Test Mode. Unit must be in Test Mode to enter the Error Code function.

Activating Error Code Mode: Press the TIMER On/ Off” button on the WS/WE/WY models (see gures 5

and 6). The LED for the TIMER On/Off will ash 1 bps (beats per second) while Error Code Mode is active. Pressing the Temp/Hour button will display “00”. Consecutive presses will scroll through all error codes stored. Press the Temp/Hour button to see the reverse order of the error codes. When the end of the stored error codes is reached the temperature Set Point will appear. (Each error code is listed once)

Test Mode overrides the three minute compressor Lockout, all delays for fan motor start, speed change, and when switching modes.

Exiting Error Code Mode: press the Timer On/Off button.

Clearing Error Codes: Error codes are cleared from the memory by exiting from Error Code Mode.

MEMORY: On WS/WE/WY

The electronic control has a memory to retain all functions and settings, as set up by the user, in the event of a power failure. For example: once power is restored to the unit, there is a two second delay before the fan comes on and approximately three minutes delay before the compressor is activated providing that the mode was set for cooling and the set point temperature has not been met in the room.

ERROR CODES LISTING FOR “WS” MODELS

E1 SHORT CYCLE SITUATION: Dened as a

compressor that starts and stops more frequently than it should.

E2 KEYBOARD STUCK ERROR: If any key button

is stuck or pressed for 20 seconds or more, the unit considers it stuck. If a key is stuck it will be ignored until released. If the “Mode” key is stuck, the unit’s function will default to Cool mode.

E3 FROST PROBE OPEN: Normal operation is

allowed. Ohm frost probe. Replace if Ohm value not read. If Ohm value is present replace the board.

E4 FROST PROBE SHORT: Normal operation is

allowed. Replace probe.

E5 INDOOR PROBE OPEN: Control assumes

indoor ambient temperature is 90 degrees F and unit will operate. Ohm indoor probe. Replace probe if Ohm value is not present.

E6 INDOOR PROBE SHORT: Control assumes

ambient temperature is 90 degrees F and unit will operate. Replace probe.

(See note and other infomation below)

ERROR CODES LISTING FOR “WE/WY” MODELS

E1 SHORT CYCLE SITUATION: Dened as a

compressor that starts and stops more frequently than it should.

E2 KEYBOARD STUCK ERROR: If any key button

E3 AMBIENT (INDOOR) AIR PROBE OPEN

OR SHORT: Control will assume ambient temperature is 90 degrees F when in Cool mode and 60 degrees F when in Heat mode. Unit will operate (see note below).

E4 EVAPORATOR TEMPERATURE PROBE

OPEN OR SHOR T: Normal operation is allowed.

Replace probe (see note below).

E5 CONDENSER TEMPERATURE PROBE

OPEN OR SHOR T: Normal operation is allowed.

Replace probe.

E7 MOTOR OPERATION

E9 HEAT PUMP FAILURE

NOTE: All error codes display for probes open or shorted will

allow unit to operate. Unit may ice up if faulty components are not replaced.

Indoor Coil Frost Probe Sensor (WS/WE/WY Models):

Disables compressor at 30 degrees F+/- 3 degrees F. Compressor resumes operation when indoor coil temperature reaches 55 degrees F.

Outdoor Coil Frost Probe Sensor (on WY models):

Disables the compressor at 30 degrees F. Compressor resumes operation when temperature reaches 43 +/- 5 degrees F.

Indoor Air Probe Sensor (WS/WE/WY Models)”:

Control range is 60 degrees F to 90 degrees F +/- 3 degrees F.

REBOOT THE CONTROL PANEL

To reboot the control panel on a WallMaster unit: with the unit on, simultaneously hold down the Mode button and the Temperature Arrow button for approximately 10 seconds. If the panel will reboot, you will hear the fan come on and the temperature window will read 60 degrees. If this happens, all you need to do is turn the unit off for about 10 seconds and then turn it back on to nish the reboot cycle. If the panel does not reboot, you will most likely need to have the panel replaced.

Figure 8: System Control Switch

(Heat Pump & Electric Heat Models)

Fan

Only

Off

Low Cool

Low Heat

Med Cool

Med Heat

High Heat

High Cool

MAX

HEAT

MAX

COOL

Allow 3 min. between restarts

SYSTEM CONTROL SWITCH - TEST

Disconnect leads from control switch. Turn control to position being tested (see Figure 8). There must be continuity as follows:

1. “Off” Position-no continuity between terminals.

2. “Lo Cool” Position-between terminals “C” and “3”, “C2” and “2”, “LO” and “M/S”, “AR” and “5”.

3. “Med Cool” Position-between terminals “C” and “3”, “C2” and “2”, “M” and “M/S”, “AR” and “5”.

4. “Hi Cool” Position-between terminals “C” and “3”, “C2” and “2”, “H” and “M/S”, “AR” and “5”.

5. “Hi Heat” Position-between terminals “C” and “1”, “C2” and “4”, “H” and “M/S”, “AR” and “5”.

6. “Med Heat” Position-between terminals “C” and “1”, “C2” and “4”, “M” and “M/S”, “AR” and “5”.

7. “Lo Cool” Position-between terminals “C” and “1”, “C2” and “4”, “LO” and “M/S”, “AR” and “5”.

8. “Fan Only” Position-between terminals “L1”, “M” and “2”.

FOR UNITS WITH ROTARY CONTROLS SYSTEM CONTROL SWITCH

(“WE” & “WY” Models) An eight position switch is used to regulate the operation of the fan motor, compressor and electric heater.

The unit can be operated in cooling or heating mode with

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operating on low, medium or high speed.

The fan motor can also be operated independently on medium speed. See switch section as indicated on decorative control panel, in Figure 7.

Figure 7: System Control Panel

NOTE:

Units will operate in constant fan in the cooling mode and auto fan in the heating mode.

ELECTRIC SHOCK HAZARD

WARNING

Disconnect power to the unit before servicing. Failure to follow this warning could result in serious injury or death.

ELECTRONIC CONTROL

THERMOSTAT

(“WE” & “WY” Models) A cross ambient thermostat is used on all electric heat and

heat pump WallMaster models (see Figure 9).

Range from 60° F (±2° F) to 92° F (±2° F).

TEST:

Remove wires from thermostat and check continuity between terminal “2” (common) and “1” for heating. Also check that contacts in thermostat open after placing in either position. NOTE: Temperature must be within range listed to check thermostat.

Figure 9 : Thermostat

THERMOSTAT ADJUSTMENT

No attempt should be made to adjust thermostat. Due to the sensitivity of the internal mechanism and the sophisticated equipment required to check the calibration, it is suggested that the thermostat be replaced rather than calibrated.

FAN MOTOR - TEST

1. Determine that capacitor is serviceable.

2. Disconnect fan motor wires from fan speed switch or system switch.

3. Apply “live” test cord probes on black wire and common terminal of capacitor. Motor should run at high speed.

4. Apply “live” test cord probes on red wire and common terminal of capacitor. Motor should run at low speed.

5. Apply “live” test cord probes on each of the remaining wires from the speed switch or system switch to test

intermediate speeds. If the control is in the “MoneySaver” mode and the thermostat calls for cooling, the fan will start - then stop after approximately 2 minutes; then the fan and compressor will start together approximately 2 minutes later.

Fan Motor

FAN MOTOR

A single phase permanent split capacitor motor is used to drive the evaporator blower and condenser fan. A self-resetting overload is located inside the motor to protect against high temperature and high amperage conditions. (See Figure 23)

ELECTRIC SHOCK HAZARD

WARNING

Disconnect power to the unit before servicing. Failure to follow this warning could result in serious injury or death.

OPERATION

Heat Pump w/back up Electric Heat

If the indoor ambient air themister reads 55 degrees, turn off the compressor and turn on the electric heat and continue fan operation until temp setting is satised. Then revert to standard heat pump operation.

If the compressor is time delayed:

1. Turn on the electric heat until the compressor is not time delayed.

2. When the compressor’s 3 minute time delay is over, turn off the electric heat, wait 5 seconds, then turn on the compressor.

Defrost:

If the outdoor coil thermister reads 30 degrees for 2 minutes continuously, turn off the compressor and turn on the electric heat and continue fan operation.

If the outdoor coil thermister reaches 43 degrees and the compressor has waited the standard delay time of 180-240 seconds:

1. Turn off the backup electric heat

2. Wait 5 seconds

3. Turn on the compressor

4. Continue fan operation.

COMPONENTS TESTING

ELECTRIC SHOCK HAZARD

Disconnect power to the unit before servicing. Failure to follow this warning could result in serious injury or death.

WARNING

CAPACITORS

DEFROST THERMOSTAT

(“WY” Electromechanical Control Models Only)

This thermostat is a single pole - double throw with contacts between terminal “2” and “3” closing on temperature rise and contacts between terminals “2” and “1” closing on temperature fall. When the contacts between terminals “2” and “3” open, power to the compressor is interrupted. When contacts between terminals “2” and “1” make, power is suppled to the heater element.

This control is a dual purpose control that acts as an outdoor thermostat and defrost control.

When the sensing bulb, attached to the condenser coil, senses enough icing on the outdoor coil it will interrupt power to the compressor and supply power to the heating

Figure 10: Defrost Control

DEFROST BULB LOCATION

(All “WY” Electromechanical Control Models) The defrost control bulb must be mounted securely and in the correct location to operate properly (see Figure 11).

Figure 11: Defrost Bulb Location (All “WY” Models)

element until the coil temperature reaches above 43°. Then the heater will shut off and the unit will resume operating in the reverse cycle mode.

When the outdoor coil temperature drops below 20 degrees, the unit will operate in electric heat mode continuously until the outdoor coil temperature rises above 43°.

WARNING

ELECTRIC SHOCK HAZARD

Turn off electric power before servicing. Discharge capacitor with a 20,000 Ohm 2 Watt resistor before handling.

Failure to do so may result in personal injury, or death.

Many motor capacitors are internally fused. Shorting the terminals will blow the fuse, ruining the capacitor. A 20,000 ohm 2 watt resistor can be used to discharge capacitors safely. Remove wires from capacitor and place resistor across terminals. When checking a dual capacitor with a capacitor analyzer or ohmmeter, both sides must be

tested.

Capacitor Check with Capacitor Analyzer

The capacitor analyzer will show whether the capacitor is “open” or “shorted.” It will tell whether the capacitor is within its micro farads rating and it will show whether the capacitor is operating at the proper power-factor percentage. The instrument will automatically discharge the capacitor when

the test switch is released.

Capacitor Connections

The starting winding of a motor can be damaged by a shorted and grounded running capacitor. This damage usually can be avoided by proper connection of the running capacitor terminals.

From the supply line on a typical 230 volt circuit, a 115 volt potential exists from the “R” terminal to ground through a

possible short in the capacitor. However, from the “S” or start terminal, a much higher potential, possibly as high as 400 volts, exists because of the counter EMF generated in the start winding. Therefore, the possibility of capacitor failure is much greater when the identied terminal is connected to the “S” or start terminal. The identied terminal should always be connected to the supply line, or “R” terminal, never to the “S” terminal.

When connected properly, a shorted or grounded running capacitor will result in a direct short to ground from the “R”

terminal and will blow the line fuse. The motor protector will protect the main winding from excessive temperature.

Dual Rated Run Capacitor Hook-up

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