Friedrich Metal Products WE10B33A-B Service Manual

Service & Parts Manual

WallMaster® Thru-the-Wall

72

WM-Svc-Prts-06 (7-06)

WS08B10A-B

WS10B10A-B

WS14B10A-B

WS10B30A-B

WS13B30B

WS16B30A-B

WE10B33A-B

WE13B33B

WE16B33A-B

WY10B33A-B

WY13B33A-B

TABLE OF CONTENTS

Warranty .....................................................................................................................................................3

Routine Maintenance ................................................................................................................................4

Unit Identifi cation ......................................................................................................................................5

Performance Data .....................................................................................................................................6

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

Functional Component Defi nitions .........................................................................................................8

Electronic Controls ...................................................................................................................................9

Rotary Controls .......................................................................................................................................10

Refrigeration Sequence of Operation ...................................................................................................11

Sealed Refrigeration Repairs ........................................................................................................... 12-13

Refrigerant Charging ..............................................................................................................................13

General Troubleshooting .................................................................................................................. 14-20

Wiring Diagrams ................................................................................................................................ 21-25

Parts Diagram ..........................................................................................................................................26

Parts Lists .......................................................................................................................................... 27-29

2

Friedrich Air Conditioning Company

£

P.O. Box 1540

San Antonio, TX 78295

210.357.4400

www.friedrich.com

WALLMASTER

THRU-THE-WALL AIR CONDITIONERS

LIMITED WARRANTY

FIRST YEAR

ANY PART: If any part supplied by FRIEDRICH fails because of a defect in workmanship or material within twelve months from

date of original purchase, FRIEDRICH will repair the product at no charge, provided room air conditioner is reasonably accessible
for service. Any additional labor cost for removing inaccessible units and/or charges for mileage related to travel by a Service
Agency that exceeds 25 miles one way will be the responsibility of the owner. This remedy is expressly agreed to be the exclusive
remedy within twelve months from the date of the original purchase.

SECOND THROUGH FIFTH YEAR

SEALED REFRIGERANT SYSTEM: If the Sealed Refrigeration System (defined for this purpose as the compressor, condenser

coil, evaporator coil, reversing valve, check valve, capillary, filter drier, and all interconnecting tubing) supplied by FRIEDRICH in
your Room Air Conditioner fails because of a defect in workmanship or material within sixty months from date of purchase,
FRIEDRICH will pay a labor allowance and parts necessary to repair the Sealed Refrigeration System; PROVIDED FRIEDRICH will
not pay the cost of diagnosis of the problem, removal, freight charges, and transportation of the air conditioner to and from the
Service Agency, and the reinstallation charges associated with repair of the Sealed Refrigeration System. All such cost will be the
sole responsibility of the owner. This remedy is expressly agreed to be the exclusive remedy within sixty months from the date of the
original purchase.

APPLICABILITY AND LIMITATIONS: This warranty is applicable only to units retained within the Fifty States of the U.S.A., District
of Columbia, and Canada. This warranty is not applicable to:

1. Air filters or fuses.

2. Products on which the model and serial numbers have been removed.

3. Products which have defects or damage which results from improper installation, wiring, electrical current

OBTAINING WARRANTY PERFORMANCE: Service will be provided by the FRIEDRICH Authorized Dealer or Service
Organization in your area. They are listed in the Yellow Pages. If assistance is required in obtaining warranty performance, write

to: Room Air Conditioner Service Manager, Friedrich Air Conditioning Co., P.O. Box 1540, San Antonio, TX 78295-1540.

LIMITATIONS: THIS WARRANTY IS GIVEN IN LIEU OF ALL OTHER WARRANTIES. Anything in the warranty
notwithstanding, ANY IMPLIED WARRANTIES OF FITNESS FOR PARTICULAR PURPOSE AND/OR MERCHANTABILITY
SHALL BE LIMITED TO THE DURATION OF THIS EXPRESS WARRANTY. MANUFACTURER EXPRESSLY DISCLAIMS AND
EXCLUDES ANY LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGE FOR BREACH OF ANY EXPRESSED OR
IMPLIED WARRANTY.

NOTE: Some states do not allow limitations on how long an implied warranty lasts, or do not allow the limitation or exclusion of

consequential or incidental damages, so the foregoing exclusions and limitations may not apply to you.

OTHER: This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.

PROOF OF PURCHASE: Owner must provide proof of purchase in order to receive any warranty related services.

All service calls for explaining the operation of this product will be the sole responsibility of the consumer.

All warranty service must be provided by an Authorized FRIEDRICH Service Agency, unless authorized by FRIEDRICH prior to
repairs being made.

characteristics, or maintenance; or caused by accident, misuse or abuse, fire, flood, alterations and/or misapplication
of the product and/or units installed in a corrosive atmosphere, default or delay in performance caused by war,
government restrictions or restraints, strikes, material shortages beyond the control of FRIEDRICH, or acts of God.

(10-04)

3

ROUTINE MAINTENANCE

NOTE: Units are to be inspected and serviced by qualifi ed service personnel only.

Routine maintenance is required annually or semi-annually, depending upon annual usage.

1. Clean the unit air intake fi lter at least every 250 to 300 fan hours of operation or when the unit’s indicator light is on if
so equipped. Clean the fi lters with a mild detergent in warm water and allow to dry thoroughly before reinstalling.

2. The indoor coil (evaporator coil), the outdoor coil (condenser coil) and base pan should be inspected periodically (yearly
or bi-yearly) and cleaned of all debris (lint, dirt, leaves, paper, etc.). Clean the coils and base pan with a soft brush and
compressed air or vacuum. If using a pressure washer, be careful not to bend the aluminium fi n pack. Use a sweeping
up and down motion in the direction of the vertical aluminum fi n pack when pressure cleaning coils. Cover all electrical
components to protect them from water or spray. Allow the unit to dry thoroughly before reinstalling it in the sleeve.

NOTE: Do not use a caustic coil cleaning agent on coils or base pan. Use a biodegradable cleaning agent and degreaser.

Inspect the indoor blower housing, evaporator blade, condenser fan blade, and condenser shroud periodically (yearly or

bi-yearly) and clean of all debris (lint, dirt, mold, fungus, etc.) Clean the blower housing area and blower wheel with an
antibacterial / antifungal cleaner. Use a biodegradable cleaning agent and degreaser on condenser fan and condenser
shroud. Use warm or cold water when rinsing these items. Allow all items to dry thoroughly before reinstalling them.

3. 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.
Use a sling psychrometer to measure wet bulb temperatures indoors and outdoors.

4. Inspect the surrounding area (inside and outside) to ensure that the units’ clearances have not been compromised or
altered.

5. Inspect the sleeve and drain system periodically (at least yearly or bi-yearly) and clean of all obstructions and debris.
Clean both areas with an antibacterial and antifungal cleaner. Rinse both items thoroughly with water and ensure that
the drain outlets are operating correctly. Check the sealant around the sleeve and reseal areas as needed.

6. Clean the front cover when needed. Use a mild detergent. Wash and rinse with warm water. Allow it to dry thoroughly
before reinstalling it in the chassis.

4

FRIEDRICH ROOM 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 Specifi 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

RAC 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 G R 00001

Production Run Number

Product Line

R = RAC

P = PTAC

E = EAC

V = VPAK

H = Split

5

PERFORMANCE DATA

FUSE

BREAKER

OPERATING

PRESSURES ELECTRICAL RATINGS R-22 REF.

Amps

60 Hertz

RPM

Motor

CFM

Evap

OZ.

Charge in

Locked

Rotor Amps

Heat

Amps

Cool

Amps

Sub-

Cooling

Heat

Super

Removal Air Circulation Weight

Moisture Room Side Net

Ratio

Efficiency

Temp

Liquid

with Extension Extension Finished Hole

Depth Minimum Minimum Thru-the-wall

Height Width Front Into Room Outside Height Width

Temp

Suction

Temp

Discharge

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

Electrical Characteristics (60 Hertz)

TEMP.

DEG. F

CONDENSER

TEMP. DEG. F

EVAPORATOR

Temp .

Drop F. E(in) E (out) Suction Discharge

TEMP. DEG. F

EVAPORATOR AIR

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

Calculate the heat loss of the space to be heated. As long as the heat loss does not exceed the resistance heat ing capacity rating of the unit, the heating performance will be satisfactory. Change-over
from heat pump operation to resistance operation on models indicated is automatic at a preset outside ambient temperature of approximately 35°F. If condensate disposal is desired, an optional drain
kit is available. DEFROST CONTROL: Initiated at 20°F (outdoor coil temperature) and terminated at 43°F (outdoor coil temperature). During defrost, the compressor stops and the electric heat starts,
then operates with the fan to maintain indoor comfort. Below 43°F, the unit remains in electric heat mode. During electric heat mode, the unit will achieve the following ratings: 11000/9100 BTU/h,

16.0/14.7 amps, and 3550/2950 wat ts. DEFROST DRAIN: Drain automatically opens at approximately 50°F in outdoor base pan for defrost condensate disposal.

Air

Discharge

WS08B10A 8000 — 115 6.8 762 — — 10.5 1.3 245 93

WS10B10A 10000 — 115 8.7 954 — — 10.5 2.4 245 103

WS14B10A 13500 — 115 12.0 1415 — — 9.5 3.3 295 112

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

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

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

WE10B33A 10000/10000 11000/9100 230/208 4.6/5.0 1005/996 16.0/14.7 3550/2950 10.0/10.0 2.1 260 103

WE13B33B 12500/12000 11000/9100 230/208 6.3/6.7 1404/1379 16.0/14.7 3550/2950 8.9/8.7 3.3 280 111

WE16B33A 15800/15000 11000/9100 230/208 7.8/8.5 1756/1705 16.0/14.7 3550/2950 9.0/8.8 4.2 290 121

WY10B33A 10100/9800 8100/ 7800 230/208 4.6/4.8 1013/976 3.9/4.0 857/821 10.0/10.0 2.5 230 107

WS08B10A 55 25 55 55 127 165 61 102 18 25 87 281 7.1 36.2 20.5 257 1100 15

WS10B10A 52 28 53 51 128 176 68 105 16 24 79 293 9.0 45.0 22.0 248 1100 15

WS14B10A 52 28 52 52 128 179 63 99 14 28 82 297 12.4 58.0 44.9 293 1300 15

WS10B30A 55 25 53 57 131 179 68 106 16 23 77 289 4.6 26.0 22.5 235 1100 15

WS13B30B 51 29 52 50 128 174 57 100 13 30 78 295 6.5 27.4 35.2 281 1300 15

WS16B30A 52 28 51 53 121 154 54 99 18 32 74 315 7.7 35.0 47.6 292 1421 15

WE10B33A 53 27 54 52 126 180 82 99 16 31 82 289 4.6 15.2 45.0 38.0 225 1074 20

WE13B33B 52 29 52 51 127 180 64 103 13 29 80 295 6.5 15.7 27.4 35.0 274 1318 20

WE16B33A 52 28 51 53 121 174 57 100 18 30 74 315 6.5 16.1 35.0 35.2 281 1305 20

WY10B33A 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 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

Energy

Cooling Heating

Capacity Capacity Volts Cooling Cooling Heating Heating

BTU/h BTU/h Rated Amps Watts Amps Watts EER Pints/Hr. CFM Lbs.

WY13B33A 12500/12100 10400/10000 230/208 6.4/6.8 1389/1352 5.4/5.7 1182/1136 9.0/9.0 3.2 280 116

Circuit Rating Plug Face Appearance

Installation Information Sleeve Dimensions

5 - 15P

6 - 15P

125V - 15A

250V - 15A

Breaker (NEMA#) (Facing Blades)

or T-D Fuse

WS08B10A, WS10B10A,

WS14B10A

WS10B30A, WS13B30B,

WS16B30A

6 - 20P

250V - 20A

WY10, WY13

WE10, WE13, WE16

6

ELECTRICAL DATA

Wire Size Use ONLY wiring size recommended for

single outlet branch circuit.

Fuse/Circuit Use ONLY type and size fuse or HACR

Breaker circuit breaker indicated on unit’s rating

plate. Proper current protection to the unit
is the responsibility of the owner.

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 fi 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.

ELECTRIC SHOCK HAZARD.

Turn off electric power before service or installation.

All electrical connections and wiring MUST be
installed by a qualifi ed electrician and conform to the
National Electrical Code and all local codes which
have jurisdiction.

Failure to do so can result in property damage,
personal injury and/or death.

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

7

FUNCTIONAL COMPONENTS

A. Mechanical components

Bellows condensate 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 58°F.

Plenum assembly
Diffuser with directional louvers used to direct the conditioned airfl ow.

Blower wheel
Attaches to the indoor side of the fan motor shaft and is used for distributing unconditioned, room side air though 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 pressures
within the coil.

B. Electrical components

Thermostat
Used to maintain the specifi ed room side comfort level

System switch
Used 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.

Capacitor
Reduces line current and steadies the voltage supply, while greatly improving the torque characteristics of the fan motor
and compressor motor.

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

Fan Motor
Dual-shafted fan motor operates the indoor blower wheel and the condenser fan blade simultaneously.

Solenoid
Used to energize the reversing valve on all heat pump units.

Heating element
Electric resistance heater, available in 3.3, 4.0 or 5.2 kW on select TwinTemp® models.

Heat anticipator
Used to provide better thermostat and room air temperature control.

C. Hermetic components

Compressor
Motorized device used to compress refrigerant through the sealed system.

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

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

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

8

SYSTEM CONTROL PANEL

(“WS” Models)

Figure 6: System Control Panel

PM

Speed

Timer

On/Off

72

Fan

Mode

Hour

Set

Cool

MoneySaver

Fan Only

Clock

Start Time

Stop Time

Power

®

Temp/Hour

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 temperature “UP” button on XQ & WS
models.

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 SET temperature by pressing any key, except
the ON/OFF button, or after 10seconds has elapsed.

ACTIVATING TEST MODE

Activate test mode by pressing at the same time the “MODE”
button and the temperature “DOWN” button on XQ & WS
models. LEDs for Hour, Start, and Stop will blink 1bps while
Test Mode is active.

Test Mode has duration of 90 minutes. Test Mode
can be activated under any conditions, including Off.
Test Mode is cancelled by pressing the On/Off button,
unplugging the unit, or when the 90 minutes is timed
out. All settings revert to the factory default settings of
Cool, 75 degrees F, Timer and Set Hour features are
nonfunctional.

Activating Error Code Mode (Submode of Test Mode)

Unit must be in Test Mode to enter Error Code Mode

1. Activate Error Code Mode by pressing the “TIMER

ON/OFF” button on XQ & WS models. LED for the
“TIMER ON/OFF” will fl ash 1bps while Error Code

Mode is active. Pressing the “TEMP/HR + ” button will
display 00. Consecutive presses will scroll through all
error codes logged. Press the “TEMP/HR - ” button
to see the reverse order of all error codes logged.
When the end of logged error codes is reached the
temperature set point will appear.

IMPORTANT

Error Codes are cleared from the log by exiting from Error
Code Mode. To exit on XQ & WS models, press Timer On/
Off button. Or unplug unit to exit Error Code Mode. Plug
unit in after 5 seconds to resume normal operation of unit.

ERROR CODE LISTINGS

E1 SHORT CYCLE SITUATION: Defi ned as

compressor powered on before the three minute
time delay ten times in one hour. Investigate and
correct short cycling problem.

E2 KEYBOARD STUCK ERROR: If key button(s)

are pressed continuously for twenty seconds or
more. If MODE key is stuck, unit will default to
cool. Exit Error Code Mode to see if error “E2”
is no longer displayed and unit is functioning.
Replace board if “E2” still displays after exiting
Error Code Mode.

E3 FROST PROBE OPEN: Normal operation is

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

E4 FROST PROBE SHORT: Normal operation

allowed. Replace probe.

E5 INDOOR PROBE OPEN: Control assumes

indoor ambient temperature is 90 degree F and
unit will operate. Ohm indoor probe. Replace
probe if ohm value not read.

E6 INDOOR PROBE SHORT: Control assumes

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

Test Mode overrides the three-minute lockout, all delays
for compressor and fan motor start / speed change, and
no delay when switching modes.

Test Mode default settings are ON, Money Saver, 60
degrees F, and High fan speed.

NOTE: All Error Code displays for Frost & Indoor Probe
will allow unit to operate. Unit may or will ice up if faulty
components not replaced.

9