Service Manual 2010 Thru-the-wall Air Conditioners and Heat Pumps WallMaster Tempera ture Cooler Cool Warmer Power Heat Fan Only Fan Speed Timer Ope ration Start Stop WallMaster® R-410A Models Cool Only 115-Volt: WS08C10A, WS10C10A, WS12C10A 230-Volt: WS10C30A, WS13C30A, WS15C30A Cool with Electric Heat 115-Volt: WE10C33A, WE13C33A, WE15C33A Heat Pump with Electric Heat Back Up 230-Volt: WY09C33A, WY12C33A WM-ServMan (4-10) Money Saver ® Set Hr.
Table Of Contents Important Safety Information ....................................................................................................................2-4 Introduction ..................................................................................................................................................4 WallMaster Model Number Code and Serial Number Identification ............................................................5 Performance Data / Sleeve and Chassis Dimensions ...........
IMPORTANT SAFETY INFORMATION The information contained in this manual is intended for use by a qualified 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.
• 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.
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 specified 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 fire and minor to serious property damage.
FRIEDRICH wallmaster MODEL NUMBER CODE W S 08 C 1 0 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 Specifications/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 3 = 3 KW Heat Strip, Nominal 8th DIGIT Major Change WallMaster
2010 PERFORMANCE DATA WALLMASTER EVAPORATOR AIR TEMP. EVAPORATOR TEMP. COOLING DEG. F DEG. F PERFORMANCE Temp. Drop Discharge Air T(in) T(out) DATA* F. WS08C10A 57 23 55 60 CONDENSER Discharge TEMPERATURE Temp DEG. F Suction Temp Liquid Temp OPERATING PRESSURES Super SubHeat Cooling ELECTRICAL RATINGS Motor RPM 257 1085 BREAKER FUSE 60 Hertz Amps 15 462 53 27 53 53 134 177 63 98 10 36 145 500 10.0 40.0 37.
electrical DATA WARNING ELECTRIC SHOCK HAZARD Turn off electric power before service or installation. All electrical connections and wiring MUST be installed by a qualified 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 fire or electically unsafe conditions which could cause moderate or serious property damage.
ELECTRONIC CONTROL OPERATION PM PM 1 Power Power Fan Speed Mode 2 3 4 8 Cool Cool Smart Fan 9 Money Saver® Fan Speed Mode Heat Fan Only Set Hour Money Saver 14 Start Time Stop Time 7 Clock Clock Timer On/Off 6 Fan Only Temp/Hour Timer On/Off Set Hour 13 5 Start Time Stop Time Temp/Hour 10 11 12 Figure1:1:WS WS Model cool-only Figure Model cool-only controlcontrol panel panel To start unit If the air conditioner is installed and plugged into a proper receptacle, it is r
To set the timer NOTE: Set the HOUR CLOCK (Set Hour) before attempting to set timer functions. You can set the Start Time and Stop Time a minimum of one hour apart, and a maximum of 23 hours apart. 11 After setting the time, press the Set Hour button once (Start light on). Use the and buttons to select the time that the unit will START. 12 After selecting the Start Time, press the Set Hour button once. and buttons to select the time (Stop Light on). Use the that the unit will STOP.
Temperature Cooler Cool Warmer Power Heat Fan Fan 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 start in the mode and fan speed it was last left on. To set mode of operation 2 COOL - Press the Cool button to automatically switch the operating mode to COOL.
ELECTRONIC CONTROL PANEL PM PM 1 Power Power Mode 3 4 8 Cool Fan Speed 2 Cool Smart Fan 9 Money Saver® Fan Speed Mode Heat Fan Only Set Hour Money Saver 14 Start Time Stop Time 7 Clock Clock Timer On/Off 6 Fan Only Temp/Hour 13 Timer On/Off Set Hour 5 Start Time Stop Time Temp/Hour 10 11 12 Figure 4: “WS” Cooling only models Electronic Control Panel TESTING THE ELECTRONIC CONTROL ACTIVATING TEST MODE Activate Test Mode by pressing at the same time, the Mode button and
ERROR CODES LISTING FOR “WS” MODELS E1 SHORT CYCLE SITUATION: Defined as a compressor that starts and stops more frequently than it should (more than 6 times per hour). 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. Replace probe.
ELECTRONIC CONTROL OPERATION COMPONENTS TESTING WARNING Heat Pump Models If the indoor ambient air themister reads 55 degrees or lower, the control will turn off the compressor and turn on the electric heat and continue fan operation until temp setting is satisfied. Then revert to standard heat pump operation. If the compressor is time delayed, the control will: 1. Turn on the electric heat until the compressor is not time delayed. 2.
COMPONENTS TESTING (Continued) CAPACITORS 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.
REFRIGERATION SYSTEM SEQUENCE OF OPERATION A good understanding of the basic operation of the refrigeration system is essential for the service technician. Without this understanding, accurate troubleshooting of refrigeration system problems will be more difficult and time consuming, if not (in some cases) entirely impossible. The refrigeration system uses four basic principles (laws) in its operation they are as follows: 1. “Heat always flows from a warmer body to a cooler body.” 2.
R-410A SEALED SYSTEM REPAIR CONSIDERATIONS WARNING Refrigeration system under high pressure Do not puncture, heat, expose to flame or incinerate. Only certified refrigeration technicians should service this equipment. R410A systems operate at higher pressures than R22 equipment. Appropriate safe service and handling practicces must be used. Only use gauge sets designed for use with R410A. Do not use standard R22 gauge sets.
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: 1. Voltmeter 9. 2. Ammeter 10. Low Pressure Gauge - (-30 to 200 lbs.) 3. Ohmmeter 11. Vacuum Gauge - (0 - 1000 microns) 4. E.P.A. Approved Refrigerant Recovery System 12.
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 charge left in the unit. To charge by this method, requires the following steps: 1.
WARNING WARNING ELECTRIC SHOCK HAZARD Turn off electric power before service or installation. HIGH PRESSURE HAZARD Sealed Refrigeration System contains refrigerant and oil under high pressure. Extreme care must be used, if it becomes necessary to work on equipment with power applied. Proper safety procedures must be followed, and proper protective clothing must be worn when working with refrigerants. Failure to do so could result in serious injury or death.
Restricted Refrigerant System Troubleshooting a restricted refrigerant system can be difficult. The following procedures are the more common problems and solutions to these problems. There are two types of refrigerant restrictions: Partial restrictions and complete restrictions. A partial restriction allows some of the refrigerant to circulate through the system. With a complete restriction there is no circulation of refrigerant in the system.
HERMETIC COMPONENTS CHECK WARNING WARNING BURN HAZARD Proper safety procedures must be followed, and proper protective clothing must be worn when working with a torch. CUT/SEVER HAZARD Be careful with the sharp edges and corners. Wear protective clothing and gloves, etc. Failure to follow these procedures could result in moderate or serious injury. Failure to do so could result in serious injury. METERING DEVICE Capillary Tube Systems All units are equipped with capillary tube metering devices. 3.
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 flow to the indoor and outdoor coils. It consists of a pressureoperated, main valve and a pilot valve actuated by a solenoid plunger. The solenoid is energized during the heating cycle only.
TESTING THE COIL WARNING ELECTRIC SHOCK HAZARD Unplug and/or disconnect all electrical power to the unit before performing inspections, maintenances or service. Failure to do so could result in electric shock, serious injury or death. The solenoid coil is an electromagnetic type coil mounted on the reversing valve and is energized during the operation of the compressor in the heating cycle. 1. Turn off high voltage electrical power to unit. 2. Unplug line voltage lead from reversing valve coil. 3.
Touch Test in Heating/Cooling Cycle WARNING BURN HAZARD Certain unit components operate at temperatures hot enough to cause burns. 6. Protect new valve body from heat while brazing with plastic heat sink (Thermo Trap) or wrap valve body with wet rag. 7. Fit all lines into new valve and braze lines into new valve. Proper safety procedures must be followed, and proper protective clothing must be worn. WARNING EXPLOSION HAZARD The use of nitrogen requires a pressure regulator.
COMPRESSOR CHECKS WARNING ELECTRIC SHOCK HAZARD Turn off electric power before service or installation. Extreme care must be used, if it becomes necessary to work on equipment with power applied. Failure to do so could result in serious injury or death. Locked Rotor Voltage (L.R.V.) Test Locked rotor voltage (L.R.V.) is the actual voltage available at the compressor under a stalled condition. Single Phase Connections Disconnect power from unit.
Single Phase Resistance Test WARNING 1. Improper air flow over the evaporator. 2. Overcharged refrigerant system causing liquid to be returned to the compressor. 3. Restricted refrigerant system. 4. Lack of lubrication. Remove the leads from the compressor terminals and set the ohmmeter on the lowest scale (R x 1). 5. Liquid refrigerant returning to compressor causing oil to be washed out of bearings. Touch the leads of the ohmmeter from terminals common to start (“C” to “S”).
COMPRESSOR REPLACEMENT Recommended procedure for compressor replacement WARNING RISK OF ELECTRIC SHOCK Unplug and/or disconnect all electrical power to the unit before performing inspections, maintenances or service. Failure to do so could result in electric shock, serious injury or death. 1. Be certain to perform all necessary electrical and refrigeration tests to be sure the compressor is actually defective before replacing. WARNING 3.
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. Proper safety procedures must be followed, and proper protective clothing must be worn when working with refrigerants. Failure to follow these procedures could result in serious injury or death.
ROUTINE MAINTENANCE WARNING ELECTRIC SHOCK HAZARD Turn off electric power before inspections, maintenances, or service. Extreme care must be used, if it becomes necessary to work on equipment with power applied. Failure to do so could result in serious injury or death. WARNING EXCESSIVE WEIGHT HAZARD Use two people to lift or carry the unit, and wear proper protective clothing. Failure to do so may result in personal injury. WARNING CUT/SEVER HAZARD Be careful with the sharp edges and corners.
ROUTINE MAINTENANCE (Continued) NOTICE 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 inappropriately which could cause water damage to surrounding property. SLEEVE / DRAIN 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.
ROOM AIR CONDITIONER UNIT PERFORMANCE TEST DATA SHEET DATE: _______________ MODEL:_______________ SERIAL:________________ 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 ELECTRICAL: LINE VOLTAGE (STATIC) START UP VOLTAGE AMPERAGE DRAW AMPERAGE DRAW --------------------------------- LOCKED ROTOR AMPS RUNNING AMPERAGE DRAW --------- AMPS --------- AMPS COMPRE
GENERAL TROUBLESHOOTING TIPS Problem Possible Cause The unit is turned to the off position, Unit does not operate. Unit Trips Circuit Breaker or Blows Fuses. LCDI Power Cord Trips (Reset Button Pops Out). The LCDI power cord is unplugged. The LCDI power cord has tripped (Reset button has popped out). Press and release RESET (listen for click; Reset button latches and remains in) to resume operation. The circuit breaker has tripped or the supply circuit fuse has blown.
GENERAL TROUBLESHOOTING TIPS (CONTINUED) Problem Possible Cause The outside temperature is below 60° F (16° C). Do not try to operate your air conditioner in the cooling mode when the outside temperature is below 60° F (16° C). The unit will not cool properly, and the unit may be damaged. The digital control is set to fan cycling mode. Since the fan does not circulate the room air continuously at this setting, the room air does not mix as well and hot (or cold) spots may result.
COOLING ONLY ROOM AIR CONDITIONERS: TROUBLESHOOTING TIPS Problem Possible Cause Low voltage Compressor does not run Temperature not set cold enough or room air thermistor inoperative Set temperature to lower than ambient temperature. Test thermistor and replace if inoperative. Compressor hums but cuts off on overload Hard start compressor. Direct test compressor.
COOLING ONLY ROOM AIR CONDITIONERS: TROUBLESHOOTING TIPS Problem Compressor runs for short periods only. Cycles on overload Possible Cause Overload inoperative. Opens too soon Possible Solution Check operation of unit. Replace overload if system operation is satisfactory Compressor restarted before system pressures equalized Control board’s default of 3 minutes delay inoperative. Replace board. Low or fluctuating voltage Check voltage with unit operating. Check for other appliances on circuit.
COOLING ONLY ROOM AIR CONDITIONERS: TROUBLESHOOTING TIPS Problem Water “spitting” into room Problem Excessive moisture Problem Possible Cause Sublimation: When unconditioned saturated, outside air mixes with conditioned air, condensation forms on the cooler surfaces Ensure that foam gaskets are installed in between window panes & in between the unit & the sleeve.
HEAT/COOL ONLY ROOM AIR CONDITIONERS: TROUBLESHOOTING TIPS Problem Possible Cause Room temperature Bad indoor ambient thermistor uneven Opened doors, windows, etc. (Heating cycle) Problem Unit will not defrost Possible Cause Check error codes. Replace if needed. Close doors, windows, etc. Possible Solution Incorrect wiring Refer to appropriate wiring diagram Bad outdoor coil thermistor or electronic control board Check error codes. Replace needed part.
HEAT PUMP TROUBLESHOOTING Problem Unit cools when heat is called for Problem Heating insufficient 38 Possible Cause Possible Solution Incorrect wiring Refer to applicable wiring diagram Defective solenoid coil Check for continuity of coil Reversing valve fails to shift Block condenser coil & switch unit to cooling. Allow pressure to build up in system, then switch to heating. If valve fails to shift, replace valve.
TROUBLESHOOTING CHART - COOLING REFRIGERANT SYSTEM DIAGNOSIS COOLING PROBLEM LOW SUCTION PRESSURE PROBLEM PROBLEM PROBLEM HIGH SUCTION PRESSURE LOW HEAD PRESSURE HIGH HEAD PRESSURE High Load Conditions Low Load Conditions High Load Conditions Low Load Conditions Low Air Flow Across Indoor Coil High Air Flow Across Indoor Coil Refrigerant System Restriction Refrigerant System Restriction Reversing Valve not Fully Seated Undercharged Overcharged Moisture in System Defective Compressor Low
ELECTRICAL TROUBLESHOOTING CHART - HEAT PUMP CAUTION WARNING ELECTRIC SHOCK HAZARD Turn off electric power before service or installation. BURN HAZARD Certain unit components operate at temperatures hot enough to cause burns. Extreme care must be used, if it becomes necessary to work on equipment with power applied. Proper safety procedures must be followed, and proper protective clothing must be worn. Failure to do so could result in serious injury or death.
TROUBLESHOOTING TOUCH TEST CHART: TO SERVICE REVERSING VALVES Normal Cooling Hot Cool Normal Heating Hot Cool Hot as (1) 5 NOTES: RIGHT Pilot RIGHT PilotTube Capillary Capillary Tube LEFT Pilot Tube to OUTSIDE 4 LEFTCapillary Pilot Tube Capillary Tube 3 Cool as (2) COIL Tube to OUTSIDE COIL SUCTION TUBE 2 to INSIDE Tube toTube INSIDE COILCOIL 1 SUCTION TUBE to to Compressor Compressor DISCHARGE TUBE from Compressor from Compressor VALVE OPERATING CONDITION DISCHARGE TUBE NORMAL FU
WALLMASTER WIRING DIAGRAM ELECTRONIC CONTROL COOL ONLY MODELS 42
WALLMASTER WIRING DIAGRAM ELECTRONIC CONTROL COOL WITH ELECTRIC HEAT MODELS 43
WALLMASTER WIRING DIAGRAM ELECTRONIC CONTROL HEAT PUMP WITH ELECTRIC HEAT MODELS 44
Installation Accessories DK / Drain Kit Installed at the back of the unit and allows for attachment to permanent condensate disposal system, if disposal is necessary or desired. SB / Sub Base Used as a base for the unit when it is desired to place the cord and receptacle within the installation, or simply as a base for the unit when mounted low in the wall. IDK / Internal Drain Kit New construction applications where a condensate drain system has been built into the wall interior.
INSTALLATION INSTRUCTIONS INSTRUCTIONS INSTALLATION FOR FOR “WSD” “WSD” SLEEVE SLEEVE MOUNTING HARDWARE PROVIDED ITEM NO. DESCRIPTION QTY. 1 SCREW, #12A X 2” 5 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” SLEEVE. The following considerations should also be given: A.
INSTALLATION REQUIREMENTS: STEP 1 The “WSD” SLEEVE should be positioned so that the DRAIN EXTENSION extends a minimum of 9/16” beyond the OUTSIDE WALL (See Figure 1). STEP 2 The “WSD” SLEEVE must extend a minimum of 7/8” beyond the INSIDE WALL. STEP 3 The “WSD” SLEEVE must be installed level side to side. STEP 4 The “WSD” SLEEVE must also be installed with a downward tilt toward the outside of the building.
INSTALLATION INSTRUCTIONS FOR BAFFLE ADAPTER KIT (BAK) WARNING MECHANICAL 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.
WallMaster® Thru-the-Wall SEALING INSTALLATION INSTRUCTIONS SEALINGGASKET GASKET INSTALLATION INSTRUCTIONS WARNING WARNING MECHANICAL HAZARD MECHANICAL CUT/SEVER HAZARD Sharp edges and corners. Be careful with Be with the edges corners. the careful sharp edges andsharp corner. Wearand protective Wear protective clothing clothing and gloves, etc. and gloves, etc. Failure to do so could result in serious injury. Failure to do so could result in serious injury.
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 hole here 0.5” In from edge Sleeve Base Dimple Drill a .625” diameter hole in the bottom of the basepan 4.75” From back of basepan WARNING WARNING MECHANICAL HAZARD MECHANICAL CUT/SEVER HAZARD Sharp edges and corners. Be careful with Be sharp carefuledges with the edges corners. the andsharp corner.
WallMaster DRAIN KIT (DK) ASSEMBLY & INSTALLATION INSTRUCTIONS WARNING MECHANICAL 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. WARNING EXCESSIVE WEIGHT HAZARD Use two people to lift or carry the unit, and wear proper protective clothing. Failure to do so may result in serious personal injury.
INSTALLATION INSTRUCTIONS SUBBASE FOR WS, WE & WY MODELS WARNING MECHANICAL 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.
INSTALLATION INSTRUCTIONS ARCHITECTURAL GRILLE MODEL AG WARNING MECHANICAL 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.
WARNING MECHANICAL 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.
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.
TECHNICAL SUPPORT CONTACT INFORMATION FRIEDRICH AIR CONDITIONING CO. Post Office Box 1540 · San Antonio, Texas 78295-1540 4200 N. Pan Am Expressway · San Antonio, Texas 78218-5212 (210) 357-4400 · 877-599-5665 x 846 · FAX (210) 357-4490 Email: tac@friedrich.com www.friedrich.com Printed in the U.S.A.
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FRIEDRICH AIR CONDITIONING CO. Post Office 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.
