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Service & Parts Manual
®
WS08B10A-C
WallMaster Thru-the-Wall
WS10B10A-C
WS14B10A-C
WS10B30A-C
WS13B30B-C
WS16B30A-C
WE10B33A-B
WE13B33B-B
WE16B33A-B
WY10B33A-B
WY13B33A-B
WM-Svc-Prts-07 (3-07)
PM
72
Power
Cool
Fan ®
Speed Mode Money Saver
Fan Only
Clock
Timer SStar et t Time
On/Off Hour
Stop Time Temp/Hour
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TABLE OF CONTENTS Warranty .....................................................................................................................................................3 Routine Maintenance ................................................................................................................................4 Unit Identifi cation ......................................................................................................................................5 Performance Da
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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 un
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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 (conden
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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 D
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PERFORMANCE DATA * 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 heating 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
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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 ELECTRIC SHOCK HAZARD. is the responsibility of the owner. Turn off electric power before service or installation. Grounding Unit MUST be grounded from branch All electrical connections and wiring MUST be circuit through service cord to unit, or installe
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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 c
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SYSTEM CONTROL PANEL (“WS” Models) Activating Error Code Mode (Submode of Test Mode) Figure 6: System Control Panel 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 PM Mode is active. Pressing the “TEMP/HR + ” button will display 00. Consecutive presses will scroll through all 72 Power error codes logged. Press the “TEMP/HR - ” button to
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Frost Probe Sensor: Disables compressor at 35 degrees SYSTEM CONTROL SWITCH - TEST F +/- 3 degrees F Disconnect leads from control switch. Turn control to posi- tion being tested (see Figure 8). There must be continuity Indoor Probe Sensor: Control range is 60 degrees F to 90 as follows: degrees F +/- 2 degrees F Indoor temperature will be displayed by pressing: 1. “Off” Position-no continuity between terminals. (XQ / WS Units) The Fan Speed button and the Temp Up 2. “Lo Cool” Position-betwee
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REFRIGERATION SYSTEM SEQUENCE OF OPERATION A good understanding of the basic operation of the refrigera- the evaporator coil. As it enters the evaporator coil, the tion system is essential for the service technician. Without larger area and lower pressure allows the refrigerant to this understanding, accurate troubleshooting of refrigeration expand and lower its temperature (heat intensity). This system problems will be more diffi cult and time consuming, expansion is often referred to as “boi
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HERMETIC COMPONENT REPLACEMENT SEALED REFRIGERATION SYSTEM The following procedure applies when replacing com- REPAIRS ponents in the sealed refrigeration circuit or repairing EQUIPMENT REQUIRED: refrigerant leaks. (Compressor, condenser, evaporator, capillary tube, refrigerant leaks, etc.) 1. Voltmeter 1. Recover the refrigerant from the system at the pro- 2. Ammeter cess tube located on the high side of the system by 3. Ohmmeter installing a line tap on the process tube. Apply gauge
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10. Evacuate system to maximum absolute holding pres- ROTARY COMPRESSOR SPECIAL sure of 200 microns or less. NOTE: This process can TROUBLESHOOTING AND SERVICE be speeded up by use of heat lamps, or by breaking Basically, troubleshooting and servicing rotary compres- the vacuum with refrigerant or dry nitrogen at 5,000 sors is the same as on the reciprocating compressor with microns. Pressure system to 5 PSIG and leave in only a few exceptions. system a minimum of 10 minutes. Release refr
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TROUBLESHOOTING TOUCH TEST CHART: TO SERVICE REVERSING VALVES NORMAL FUNCTION OF VALVE NOTES: VALVE OPERATING * TEMPERATURE OF VALVE BODY CONDITION ** WARMER THAN VALVE BODY 1 2 3 4 5 6 POSSIBLE CAUSES CORRECTIONS Cool Hot Hot Cool *TVB TVB Normal Cooling as (2) as (1) Hot Cool Hot Cool *TVB TVB Normal Heating as (1) as (2) MALFUNCTION OF VALVE No voltage to coil. Repair electrical circuit. Check Electrical circuit and coil Defective coil. Replace coil. Low charge. Repair leak, recharge sys
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COOLING ONLY ROOM AIR CONDITIONERS: TROUBLESHOOTING TIPS Problem Possible Cause Action Check voltage at compressor. 115V & 230V Low voltage units will operate at 10% voltage variance T-stat not set cold enough or Set t-stat to coldest position. Test t-stat & re- inoperative place if inoperative Compressor hums but cuts off on Hard start compressor. Direct test compressor. B10 overload If compressor starts, add starting components Compressor Open or shorted compressor does not run Check for c
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Problem Possible Cause Action Replace fuse, reset breaker. If repeats, check Fuse blown or circuit tripped fuse or breaker size. Check for shorts in unit wiring & components Power cord not plugged in Plug it in Unit does not run System switch in "OFF" position Set switch correctly Inoperative system switch Test for continuity in each switch position Loose or disconnected wiring at Check wiring & connections. Reconnect per switch or other components wiring diagram Problem Possible Cause Actio
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Problem Possible Cause Action Overload inoperative. Opens too Check operation of unit. Replace overload if soon system operation is satisfactory Allow a minimum of 2 minutes to allow Compressor restarted before pressures to equalize before attempting to system pressures equalized restart. Instruct customer of waiting period Check voltage with unit operating. Check for other appliances on circuit. Air conditioner Compressor runs Low or fl uctuating voltage should be in separate circuit for
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Problem Possible Cause Action 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 the closed position & are in tact Water "spitting" into room Follow installation instructions to ensure that Downward pitch of install
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HEAT / COOL ROOM AIR CONDITIONERS: TROUBLESHOOTING TIPS Problem Possible Cause Action Disconnect power to unit. Remove resistor Heat anticipator (resistor) shorted from t-stat bulb block. Plus in unit & allow to (on applicable models) operate. Feel resistor for heat. If not heat, replace resistor Room temperature uneven Wide differential - partial loss of Replace t-stat & check (Heating cycle) t-stat bulb charge Refer to appropriate wiring diagram. Resistor Incorrect wiring is energized du
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Problem Possible Cause Action Incorrect wiring Refer to applicable wiring diagram Defective solenoid coil Check for continuity of coil Block condenser coil & switch unit to cooling. Unit cools when Allow pressure to build up in system, then heat is called for Reversing valve fails to shift switch to heating. If valve fails to shift, replace valve. Inoperative system switch Check for continuity of system switch Problem Possible Cause Action Heating capillary tube partially Check for partially
