Summary of Contents for Friedrich WallMaster WS08B10-A
Page 1
This Owner's Manual is provided and hosted by Appliance Factory Parts. FRIEDRICH WS10B10-A Owner's Manual Shop genuine replacement parts for FRIEDRICH WS10B10-A Find Your FRIEDRICH Air Conditioner Parts - Select From 1575 Models -------- Manual continues below --------...
Instructions For Using Cooling Load Estimate Form ................ 4 Cooling Load Estimate Form ......................5 Heat Load Form ..........................6 Heating Load From Friedrich Unit Heat Pumps ................7 SPECIFICATIONS/PERFORMANCE DATA Specifications "WS" Models ......................8 Performance Data "WS" Models ....................... 8 Specifications "WE"...
FRIEDRICH ROOM MODEL NUMBER CODE 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...
INSTRUCTIONS FOR USING COOLING LOAD ESTIMATE FORM FOR ROOM AIR CONDITIONERS (AHAM PUB. NO. RAC-1) This cooling load estimate form is suitable for estimating the cooling load for comfort air conditioning installa- tions which do not require specific conditions of inside temperature and humidity. The form is based on an outside design temperature of 95°F dry bulb and 75°F wet bulb.
COOLING LOAD ESTIMATE FORM FACTORS BTU/Hr. HEAT GAIN FROM QUANTITY (Quantity x Factor) Outside (Area nside WINDOWS: Heat gain from the sun. Shades* Awnings* X Factor) Shades* ____sq. ft. 20 ____ ____ Northeast These factors are for single glass ____sq. ft. 25 ____ only ____...
HEAT LOAD FORM The heat load form, Page 8, may be used by servicing Below is an example using the heat load form: personnel to determine the heat loss of a conditioned space and the ambient winter design temperatures in A space to be conditioned is part of a house which the unit will heat the calculated space.
HEATING LOAD FORM FRIEDRICH ROOM UNIT HEAT PUMPS BTU/HR PER WALLS: (Linear Feet) °F TEMP. DIFFERENCE 2" Insulation Lin. Ft. x 1.6 Average Lin. Ft. x 2.6 WINDOWS & DOORS (Area, sq. ft.) Single Glass: Sq. Ft. x 1.13 Double Glass: Sq.
COMPONENTS OPERATION & TESTING GROUND TEST Use an ohmmeter set on its highest scale. Touch one WARNING lead to the compressor body (clean point of contact as a good connection is a must) and the other probe in DISCONNECT ELECTRICAL POWER TO turn to each compressor terminal (see Figure 2.) If a UNIT BEFORE SERVICING OR TESTING reading is obtained, the compressor is grounded and...
TERMINAL OVERLOAD (External) TERMINAL OVERLOAD (Internal) Some compressors are equipped with an external over- Some model compressors are equipped with an internal load which is located in the compressor terminal box overload. The overload is embedded in the motor adjacent to the compressor body (see Figure 3.) windings to sense the winding temperature and/or The overload is wired in series with the common motor current draw.
Figure 5: Fan Motor Figure 6: System Control Panel FAN MOTOR - TEST Determine that capacitor is serviceable. 3. “Med Cool” Position - between terminals “L1” and “C”, “M” and “MS”. Disconnect fan motor wires from fan speed switch or system switch. 4.
The unit can be operated in cooling or heating mode with the compressor or electric heater on and the fan Figure 9: System Control Switch motor operating on low, medium or high speed. (Heat Pump & Electric Heat Models) The fan motor can also be operated independently on medium speed.
CAPACITOR - TEST Figure 11: Thermostat Remove capacitor from unit. Check for visual damage such as bulges, cracks, or leaks. For dual rated, apply an ohmmeter lead to com- mon (C) terminal and the other probe to the com- pressor (HERM) terminal. A satisfactory capacitor will cause a deflection on the pointer, then gradu- ally move back to infinity.
THERMOSTAT ADJUSTMENT Should the fan motor fail or filter become clogged, the high limit control will open and interrupt power to the heater No attempt should be made to adjust thermostat. Due before reaching an unsafe temperature condition. to the sensitivity of the internal mechanism and the so- phisticated equipment required to check the calibration, The control is designed to open at 120°...
CHECK VALVE: LIQUID DRYER DEFROST BULB LOCATION (All "WY" Models) OPERATION HEAT PUMP The defrost control bulb must be mounted securely and COOLING MODE (See Figure 16) in the correct location to operate properly (see Figure 15.) In the cooling mode of operation, liquid refrigerant from condenser (liquid line) enters the cooling check valve forc- Figure 15: Defrost Bulb Location ing the heating check valve shut.
DRAIN PAN VALVE (See Figure 18) The pivot valve is responsible for directing the refriger- ant flow to the indoor or outdoor coil. There are three During the cooling mode of operation, condensate which small tubes connected to the pivot valve body. The cen- collects in the drain pan is picked up by the condenser ter pilot tube is the common pilot tube and is connected fan blade and sprayed onto the condenser coil.
If the valve is stuck in the heating position, block the air 3. Accurately weighing the refrigerant charge actu- flow through the indoor coil and allow discharge pres- ally introduced into the system. sure to build in the system. Then switch the system from heating to cooling.
Proceed with processing as outlined under her- metic component replacement. NOTE: All inoperative compressors returned to Friedrich must have all lines properly plugged with the plugs from the replacement compressor.
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 Normal Cool Cool, Hot, *TVB Cooling as(2) as (1) Normal Heating Cool Hot, Cool, *TVB...
TROUBLESHOOTING - COOLING PROBLEM POSSIBLE CAUSE TO CORRECT Low voltage. Check for voltage at compressor. 115 volt and 230 volt units will operate at 10% voltage variance Thermostat not set cold enough Set thermostat to coldest position. Test or inoperative. Compressor does thermostat and replace if inoperative.
Page 24
PROBLEM TO CORRECT POSSIBLE CAUSE Replace fuse, reset breaker. If repeats, Fuse blown or circuit tripped. check fuse or breaker size. Check for shorts in unit wiring and components. Unit Power cord not plugged in. does System switch in “Off” position. Set switch correctly.
Page 25
POSSIBLE CAUSE TO CORRECT PROBLEM Check operation of unit. Replace overload if Overload inoperative. Opens too system operation is satisfactory. soon. Allow a minimum of two (2) minutes for pres- Compressor attempts to start before sures to equalize before attempting to restart. system pressures are equalized.
Page 26
PROBLEM POSSIBLE CAUSE TO CORRECT Replace thermostat. Thermostat differential too narrow. Check gasket. Reposition or replace. Plenum gasket not sealing, allowing Thermostat short discharge air to short cycle cycles. thermostat. Clean and advise customer of periodic clean- Restricted coil or dirty filter. ing of filter.
TROUBLESHOOTING - HEATING (HEAT PUMPS) PROBLEM POSSIBLE CAUSE TO CORRECT Thermostat setting. Set thermostat to a warmer position. Defective thermostat. Replace — do not attempt to adjust. No heating — fan Compressor not operating. Check compressor wiring. Check for open operates.
Page 28
TO CORRECT PROBLEM POSSIBLE CAUSE Outdoor thermostat does not cut off Defective thermostat — replace. Unit does not heat compressor at the preselected adequately. temperature and bring on the heating element. Fresh air or exhaust door open. Check if operating properly. Instruct customer on proper use of control.
TROUBLESHOOTING - HEATING (Cooling/Electric Models) PROBLEM POSSIBLE CAUSE TO CORRECT Heater relay or contactor coil open. Check continuity of coil. Heater relay or contactor stuck open, Inspect, test continuity with ohmmeter. Fan Operates – pitted or burned. heating element High limit control open. Check continuity –...
Page 30
TO CORRECT POSSIBLE CAUSE PROBLEM Defective motor. Check and replace. Fan motor does not Open or shorted capacitor. Replace capacitor and check. operate in “Constant” Condenser fan frozen to base pan. Check if drain pan valve is open. If not, replace. or “MoneySaver”...
Page 31
TROUBLESHOOTING - HEATING (Cooling/Electric Models) TO CORRECT PROBLEM POSSIBLE CAUSE Heater relay or contactor coil open. Check continuity of coil. Heater relay or contactor stuck Inspect, test continuity with ohmmeter. open, pitted or burned. Fan operates – High limit control open. heating element does Check continuity –...
Page 32
TO CORRECT PROBLEM POSSIBLE CAUSE Defective motor Check and replace. Fan motor does not Open or shorted capacitor. Replace capacitor and check. operate in “Constant” Check if drain pan valve is open, if not, replace. Condenser fan frozen to base or “MoneySaver”...
Plastic Bag Assembly ........... 616-032-00 Panel, Weather Inner ........... 906-011-00 Screw, #8B x 3/8" ............616-030-01 Grille, Louvered ............604-058-04 Friedrich Script ............. 906-047-01 Screw, #8A x 3/8" ............616-033-01 Panel, Weather Outer ........... 616-078-00 Label, Friedrich ............. 616-084-01 Carton, Shipping ............
Page 41
Use Factory Certified Parts. 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) 357-4480 www.friedrich.com Printed in the U.S.A. WM0100 (6-04)
Need help?
Do you have a question about the WallMaster WS08B10-A and is the answer not in the manual?
Questions and answers