Friedrich WallMaster WS08C10 Service Manual
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Friedrich WallMaster WS08C10 Service Manual

Thru-the-wall air conditioners and heat pumps
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See also: Operation & Installation Manual
Thru-the-wall
Air Conditioners and Heat Pumps
WallMaster
Cool Only
115-Volt: WS08C10
230-Volt: WS10C30
Cool with Electric Heat
230-Volt: WE10C33
Heat Pump with Electric Heat Back Up
230-Volt: WY09C33
WM-ServMan (1-11)
2 0 1 1
®
R-410A Models
*
*
, WS10C10
, WS12C10
*
*
, WS13C30
, WS15C30
*
*
, WE13C33
, WE15C33
*
*
, WY12C33
*
*
*
*
Last character may vary.

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  • Page 1 2 0 1 1 Thru-the-wall Air Conditioners and Heat Pumps ® WallMaster R-410A Models Cool Only 115-Volt: WS08C10 , WS10C10 , WS12C10 230-Volt: WS10C30 , WS13C30 , WS15C30 Cool with Electric Heat 230-Volt: WE10C33 , WE13C33 , WE15C33 Heat Pump with Electric Heat Back Up 230-Volt: WY09C33 , WY12C33 WM-ServMan (1-11)

  • Page 2: Table Of Contents

    Table Of Contents Important Safety Information ........................2-4 Introduction ..............................4 WallMaster Model Number Code and Serial Number Identifi cation ............5 Performance Data / Sleeve and Chassis Dimensions .................6 Electrical Data ..............................7 How to Operate the Electronic WallMaster Room Air Conditioner ............8-9 Remote Control ............................10 Electronic Control: Testing, Error Codes, Rebooting ................11-12 Electronic Control Heat Pump Operation ....................13...

  • Page 3: Important Safety Information

    IMPORTANT SAFETY INFORMATION The information contained in this manual is intended for use by a qualifi 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.
  • Page 4 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 •...

  • Page 5: 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 specifi ed amperage rating. • Connect to a properly grounded outlet only. •...

  • Page 6: Wallmaster Model Number Code And Serial Number Identifi Cation

    FRIEDRICH WALLMASTER MODEL NUMBER CODE A - A 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...

  • Page 7: Performance Data / Sleeve And Chassis Dimensions

    9/16 17 1/4 27 1/4 15 5/16 R-410A Chassis 15 3/4 26 1/2 All models use environmentally friendly R-410A refrigerant. As an partner, Friedrich Air Conditioning Co. has determined that the selected ( ) meet the guidelines for energy efficiency.

  • Page 8: 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 qualifi 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.

  • Page 9: How To Operate The Electronic Wallmaster Room Air Conditioner

    ELECTRONIC CONTROL OPERATION Power Power Cool Cool Smart Fan Only Mode Speed Money Saver ® Speed Mode Heat Fan Only Clock Clock Money Timer Start Time Timer Start Time Hour Saver On/Off On/Off Hour Stop Time Stop Time Temp/Hour Temp/Hour 10 11 12 Figure 2: Figure 1:...
  • Page 10 To set the timer Cool with Electric Heat and NOTE: Set the HOUR CLOCK (Set Hour) before attempting to set Heat Pump with Electric Heat Units timer functions. Cool Mode with Money Saver OFF You can set the Start Time and Stop Time a minimum of one hour Fan runs continuously.

  • Page 11: Remote Control

    Temperature Cooler Warmer Power Cool Heat Money Only Speed Saver ® Timer Operation On/Off Start Stop Set Hr. Figure 3 WY/WE heat-cool model remote control Using the remote control To set the hour clock To start unit 1 POWER - Press the Power button once. The unit will automatically 9 SET HOUR CLOCK - Press the Set Hr.

  • Page 12: Electronic Control: Testing, Error Codes, Rebooting

    ELECTRONIC CONTROL PANEL Power Power Cool Cool Smart Fan Only Mode ® Speed Money Saver Speed Mode Heat Fan Only Clock Clock Money Timer Start Time Timer Start Time Saver On/Off Hour Hour On/Off Stop Time Stop Time Temp/Hour Temp/Hour 10 11 12 Figure 4: “WS”...
  • Page 13 ERROR CODES LISTING FOR “WS” MODELS SHORT CYCLE SITUATION: Defi ned as a FROST PROBE SHORT: Normal operation is compressor that starts and stops more frequently allowed. Replace probe. than it should (more than 6 times per hour). INDOOR PROBE OPEN: Control assumes KEYBOARD STUCK ERROR: If any key button indoor ambient temperature is 90 degrees F and is stuck or pressed for 20 seconds or more, the...

  • Page 14: Electronic Control Heat Pump Operation

    ELECTRONIC CONTROL COMPONENTS TESTING OPERATION WARNING Heat Pump Models ELECTRIC SHOCK HAZARD If the indoor ambient air themister reads 55 degrees or Disconnect power to the unit before lower, the control will turn off the compressor and turn servicing. Failure to follow this warning on the electric heat and continue fan operation until temp could result in serious injury or death.

  • Page 15: Components Testing

    COMPONENTS TESTING (Continued) CAPACITORS HEATING ELEMENT WARNING (“WE” &”WY” Models) ELECTRIC SHOCK HAZARD All “WE” and “WY” models are equipped with a 3.3 KW Turn off electric power before servicing. heating element. Discharge capacitor with a 20,000 Ohm 2 Watt resistor before handling.

  • Page 16: Refrigeration System Sequence Of Operation

    REFRIGERATION SYSTEM SEQUENCE OF OPERATION A good understanding of the basic operation of the The refrigerant leaves the condenser Coil through the liquid refrigeration system is essential for the service technician. line as a warm high pressure liquid. It next will pass through Without this understanding, accurate troubleshooting of the refrigerant drier (if so equipped).

  • Page 17: R-410A Sealed System Repair Considerations

    Weigh-in the refrigerant charge into the high side of the system. • Introduce liquid refrigerant charge into the high side of the system. • For low side pressure charging of R-410A, use a charging adaptor. • Use Friedrich approved R-410A fi lter dryers only.

  • Page 18: Sealed System Refrigeration Repairs / Charging

    R-410A SEALED REFRIGERATION SYSTEM REPAIRS IMPORTANT SEALED SYSTEM REPAIRS TO COOL-ONLY MODELS REQUIRE THE INSTALLATION OF A LIQUID LINE DRIER. SEALED SYSTEM REPAIRS TO HEAT PUMP MODELS REQUIRE THE INSTALLATION OF A SUCTION LINE DRIER. EQUIPMENT REQUIRED: High Pressure Gauge - (0 to 750 lbs.) 1.
  • Page 19 Method Of Charging / Repairs The acceptable method for charging the WallMaster 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...
  • Page 20 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 21 Restricted Refrigerant System Troubleshooting a restricted refrigerant system can be at the metering device entrance to the evaporator. The diffi cult. 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 22: Hermetic Components Check

    HERMETIC COMPONENTS CHECK WARNING WARNING BURN HAZARD Proper safety procedures must be followed, CUT/SEVER HAZARD and proper protective clothing must be worn Be careful with the sharp edges and corners. when working with a torch. Wear protective clothing and gloves, etc. Failure to follow these procedures could Failure to do so could result in serious injury.

  • Page 23: Reversing Valve Description/Operation

    REVERSING VALVE DESCRIPTION/OPERATION WARNING ELECTRIC SHOCK HAZARD Disconnect power to the unit before servicing. Failure to follow this warning could result in serious injury or death. The Reversing Valve controls the direction of refrigerant fl ow “A” and “B” ports of the pilot valve. A third capillary is a common to the indoor and outdoor coils.

  • Page 24: Testing The Coil And Reversing Valve

    TESTING THE COIL pressure to build in the system. Then switch the system WARNING from heating to cooling. ELECTRIC SHOCK HAZARD If the valve is stuck in the heating position, block the air Unplug and/or disconnect all electrical power fl ow through the indoor coil and allow discharge pressure to the unit before performing inspections, to build in the system.
  • Page 25 Touch Test in Heating/Cooling Cycle 6. Protect new valve body from heat while brazing with plastic WARNING heat sink (Thermo Trap) or wrap valve body with wet rag. BURN HAZARD Certain unit components operate at Fit all lines into new valve and braze lines into new temperatures hot enough to cause burns.

  • Page 26: Compressor Checks

    COMPRESSOR CHECKS External Overload WARNING The compressor is equipped with an external overload which senses both motor amperage and winding tem- ELECTRIC SHOCK HAZARD perature. High motor temperature or amperage heats the Turn off electric power before service or installation. Extreme care must be used, if it overload causing it to open, breaking the common circuit becomes necessary to work on equipment with within the compressor.
  • Page 27 Single Phase Resistance Test Many compressor failures are caused by the following WARNING conditions: Improper air fl ow over the evaporator. ELECTRIC SHOCK HAZARD Turn off electric power before service or Overcharged refrigerant system causing liquid to be installation. Extreme care must be used, if it returned to the compressor.

  • Page 28: 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 and discharge process tubes open to atmosphere. WARNING 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 29 SPECIAL PROCEDURE IN THE CASE OF MOTOR COMPRESSOR BURNOUT WARNING ELECTRIC SHOCK HAZARD Turn off electric power before service or installation. Failure to do so may result in personal injury, or death. WARNING HIGH PRESSURE HAZARD Sealed Refrigeration System contains refrigerant and oil under high pressure.

  • Page 30: Routine Maintenance

    ROUTINE MAINTENANCE AIR FILTER WARNING Clean the unit air intake fi lter at least every 300 to 350 hours of operation. Clean the fi lters with a mild detergent in warm ELECTRIC SHOCK HAZARD water and allow to dry thoroughly before reinstalling. Turn off electric power before inspections, maintenances, or service.

  • Page 31: Routine Maintenance

    1" Diameter Plug Sleeve ROUTINE MAINTENANCE (Continued) Airflow NOTICE Decorative Front Do not drill holes in the bottom of the drain pan or the underside of the unit. Not following this notice could result in damage to the unit or condensate water leaking Discharge Grille inappropriately which could cause water damage to...

  • Page 32: Performance Test Data Sheet

    IS A CHASSIS SEAL GASKET INSTALLED? ____ ____ IS THERE A FRIEDRICH SLEEVE INSTALLED? ____ ____ IS THERE A FRIEDRICH OUTDOOR GRILL INSTALLED? ____ ____ IS MAINTENANCE BEING PERFORMED? ____ ____ If NO is checked use back of sheet for explanation...
  • Page 33 GENERAL TROUBLESHOOTING TIPS Problem Possible Cause Possible Solution Turn the unit to the on position and raise or The unit is turned to the off position, lower temperature setting (as appropriate) to call for operation. Plug into a properly grounded 3 prong receptacle.
  • Page 34 GENERAL TROUBLESHOOTING TIPS (CONTINUED) Problem Possible Cause Possible Solution Do not try to operate your air conditioner in the The outside temperature is below cooling mode when the outside temperature 60° F (16° C). is below 60° F (16° C). The unit will not cool properly, and the unit may be damaged.
  • Page 35 COOLING ONLY ROOM AIR CONDITIONERS: TROUBLESHOOTING TIPS Possible Solution Check voltage at compressor. 115V & 230V Low voltage units will operate at 10% voltage variance Temperature not set cold enough or Set temperature to lower than ambient temperature. Test thermistor and replace room air thermistor inoperative if inoperative.
  • Page 36 COOLING ONLY ROOM AIR CONDITIONERS: TROUBLESHOOTING TIPS Possible Solution Overload inoperative. Opens too Check operation of unit. Replace overload if soon system operation is satisfactory Compressor restarted before Control board’s default of 3 minutes delay inoperative. Replace board. system pressures equalized Check voltage with unit operating.
  • Page 37 COOLING ONLY ROOM AIR CONDITIONERS: TROUBLESHOOTING TIPS Possible Solution Sublimation: Ensure that foam gaskets are installed in When unconditioned saturated, between window panes & in between the outside air mixes with conditioned unit & the sleeve. Also, ensure that fresh air, condensation forms on the air/exhaust vents (on applicable models) are in cooler surfaces...
  • Page 38 HEAT/COOL ONLY ROOM AIR CONDITIONERS: TROUBLESHOOTING TIPS Possible Solution Bad indoor ambient thermistor Check error codes. Replace if needed. Room temperature uneven Close doors, windows, etc. Opened doors, windows, etc. (Heating cycle) Possible Solution Incorrect wiring Refer to appropriate wiring diagram Bad outdoor coil thermistor or Check error codes.

  • Page 39: Troubleshooting

    HEAT PUMP TROUBLESHOOTING Possible Solution Incorrect wiring Refer to applicable wiring diagram Defective solenoid coil Check for continuity of coil Block condenser coil & switch unit to cooling. Allow pressure to build up in system, then Unit cools when Reversing valve fails to shift switch to heating.
  • Page 40 TROUBLESHOOTING CHART - COOLING REFRIGERANT SYSTEM DIAGNOSIS COOLING PROBLEM PROBLEM PROBLEM PROBLEM LOW SUCTION PRESSURE HIGH SUCTION PRESSURE LOW HEAD PRESSURE HIGH HEAD PRESSURE Low Load Conditions High Load Conditions Low Load Conditions High Load Conditions Low Air Flow Across High Air Flow Across Refrigerant System Low Air Flow Across...
  • Page 41 ELECTRICAL TROUBLESHOOTING CHART - HEAT PUMP CAUTION WARNING BURN HAZARD ELECTRIC SHOCK HAZARD Turn off electric power before service or Certain unit components operate at installation. temperatures hot enough to cause burns. 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...
  • Page 42 TROUBLESHOOTING TOUCH TEST CHART: TO SERVICE REVERSING VALVES NORMAL FUNCTION OF VALVE NOTES: VALVE OPERATING * TEMPERATURE OF VALVE BODY CONDITION ** WARMER THAN VALVE BODY POSSIBLE CAUSES CORRECTIONS Cool Normal Cooling Cool *TVB as (2) as (1) Cool Normal Heating Cool *TVB as (1)

  • Page 43: Wiring Diagrams

    WALLMASTER WIRING DIAGRAM ELECTRONIC CONTROL COOL ONLY MODELS 115-Volt: WS08C10 , WS10C10 , WS12C10 230-Volt: WS10C30 , WS13C30 , WS15C30 Last character may vary.

  • Page 44: Electronic Control

    WALLMASTER WIRING DIAGRAM ELECTRONIC CONTROL COOL WITH ELECTRIC HEAT MODELS 230-Volt: WE10C33 , WE13C33 , WE15C33 Last character may vary.

  • Page 45: Wiring Diagrams

    WALLMASTER WIRING DIAGRAM ELECTRONIC CONTROL HEAT PUMP WITH ELECTRIC HEAT MODELS 230-Volt: WY09C33 , WY12C33 Last character may vary.

  • Page 46: Installation Accessories

    Installation Accessories DK / Drain Kit SB / Sub Base IDK / Internal Drain Kit I nst al l ed at t he back of t he uni t and al l ow s Used as a base f or t he uni t w hen New cons t r uct i on appl i cat i ons w her e Neces sar y when i nst al l i ng i n a s l eeve f or at t achm ent t o per m anent condens at e...

  • Page 47: Installation Instructions For "Wsd" Sleeve

    INSTALLATION INSTRUCTIONS INSTALLATION INSTRUCTIONS FOR “WSD” SLEEVE FOR “WSD” SLEEVE MOUNTING HARDWARE PROVIDED ITEM DESCRIPTION QTY. SCREW, #12A X 2” WALL PREPARATION: STEP 1 The wall opening required for a “WSD” SLEEVE is 17 1/4” high by 27 1/4” wide. STEP 2 LINTELS must be used in opening of brick veneer and masonry walls to support the material above the “WSD”...

  • Page 48: Installation Requirements

    For immediate installation of sleeve and chassis (skip if installing chassis into sleeve at a later date): Remove the rear WEATHER PANEL. Reverse grille and place lower edge into sleeve tab (Friedrich logo facing out). Align slots with screw holes. Secure grille with screws.

  • Page 49: Installation Instructions For Baffl E Adapter Kit

    INSTALLATION INSTRUCTIONS FOR BAFFLE ADAPTER KIT (BAK) WARNING MECHANICAL HAZARD CUT/SEVER HAZARD Be careful with the sharp edges and corners. Wear protective clothing and gloves, etc. Failure to do so could result in serious injury.

  • Page 50: Seal Gasket Installation Instructions

    WallMaster ® Thru-the-Wall SEALING GASKET INSTALLATION INSTRUCTIONS SEALING GASKET INSTALLATION INSTRUCTIONS WARNING WARNING MECHANICAL HAZARD MECHANICAL HAZARD CUT/SEVER HAZARD Sharp edges and corners. Be careful with Be careful with the sharp edges and corners. the sharp edges and corner. Wear protective Wear protective clothing and gloves, etc.

  • Page 51: Installation Instructions For Internal Drain Kit (Idk)

    INSTALLATION INSTRUCTIONS INSTALLATION INSTRUCTIONS FOR INTERNAL DRAIN KIT FOR INTERNAL DRAIN KIT (IDK) (IDK) Apply Sealer to the bottom of the Drain Plate Wall Sleeve Drill a .625” diameter 0.5” In hole here from edge Sleeve Base 4.75” From back of Drill a .625”...

  • Page 52: Assembly And Installation Instructions For Drain Kit (Dk)

    WallMaster DRAIN KIT (DK) ASSEMBLY & INSTALLATION INSTRUCTIONS WARNING WARNING MECHANICAL HAZARD CUT/SEVER HAZARD EXCESSIVE WEIGHT HAZARD Use two people to lift or carry the unit, Be careful with the sharp edges and corners. and wear proper protective clothing. Wear protective clothing and gloves, etc. Failure to do so may result in serious Failure to do so could result in serious injury.

  • Page 53: Installation Instructions For Sub-Base

    INSTALLATION INSTRUCTIONS SUBBASE FOR WS, WE & WY MODELS WARNING MECHANICAL HAZARD CUT/SEVER HAZARD Be careful with the sharp edges and corners. Wear protective clothing and gloves, etc. Failure to do so could result in serious injury.

  • Page 54: Installation Instructions For Architectural Grille Model Ag-48-49

    INSTALLATION INSTRUCTIONS ARCHITECTURAL GRILLE MODEL AG WARNING MECHANICAL HAZARD CUT/SEVER HAZARD Be careful with the sharp edges and corners. Wear protective clothing and gloves, etc. Failure to do so could result in serious injury.
  • Page 55 WARNING MECHANICAL HAZARD CUT/SEVER HAZARD Be careful with the sharp edges and corners. Wear protective clothing and gloves, etc. Failure to do so could result in serious injury.

  • Page 56: 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.

  • Page 57: Technical Assistance

    TECHNICAL SUPPORT CONTACT INFORMATION FRIEDRICH AIR CONDITIONING CO. 10001 Reunion Place, Ste. 500, San Antonio, TX 78216 (210) 546-0500 877-599-5665 x 261 FAX (210) 546-0731 Email: tac@friedrich.com www.friedrich.com Printed in the U.S.A.
  • Page 58 NOTES...
  • Page 59 NOTES...
  • Page 60 FRIEDRICH AIR CONDITIONING CO. 10001 Reunion Place, Ste. 500, San Antonio, TX 78216 P 210-546-0500 | F 210-546-0731 www.friedrich.com Printed in the U.S.A. WM-ServMan (01-11)

This manual is also suitable for:

Wallmaster ws10c10Wallmaster ws12c10 seriesWallmaster ws15c30 seriesWallmaster ws10c30 seriesWallmaster we10c33 seriesWallmaster ws13c30 series ... Show all

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