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Service Manual

Room Air Conditioners

RAC-ServMan (04-09)

Models
2009
2008

Low

Cool

High

Cool

Low

Heat

High

Heat

MAX

COOL

MAX

HEAT

Fan

Only

Off

Allow 3 min. betw

een restarts

!

Money

Fan

Timer Operat

ion

Set Hr.

Stop

Start

Temperature

Fan

Cool

On/Off

Power

Cooler

Only

Speed

Saver®

Warmer

Money

Fan

Timer Operation

Set Hr.

Stop

Start

Temperature

Fan

Cool

On/Off

Power

Cooler

Only

Speed

Saver ®

Warmer

1
2
3
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Содержание Twintemp

Страница 1: ...Heat High Heat MAX COO L MAX HEAT Fan Only Off Allow 3 min between restarts Money Fan Timer Operation Set Hr Stop Start Temperature Fan Cool On Off Power Cooler Only Speed Saver Warm er Money Fan Time...

Страница 2: ...IONING 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 TECHNICAL SUPPORT...

Страница 3: ...ontrol and Error Code Listings 17 18 Testing the Rotary Control Switches 19 20 Functional Component Definition 20 Components Testing 21 24 Defrost Thermostat Operation 24 Electronic Control Sequence o...

Страница 4: ...sistant if possible Capacitors even when disconnected from the electrical power source retain an electrical charge potential capable of causing electric shock or electrocution Handle discharge and tes...

Страница 5: ...contact with liquid refrigerant can result in minor to moderate injury Be extremely careful when using an oxy acetylene torch Direct contact with the torch s flame or hot surfaces can cause serious b...

Страница 6: ...ilure to follow these instructions can result in fire and minor to serious property damage WATER DAMAGE HAZARDS Improper installation maintenance or servicing of the air conditioner unit or not follow...

Страница 7: ...n conjunction with the installation manuals provided with each air conditioning system component This service manual was written to assist the professional RAC service technician to quickly and accura...

Страница 8: ...X Straight Cool 2nd Digit Q Q Star S Small Chassis M Medium Chassis L Large Chassis H HazardGard 3rd and 4th Digit Approximate BTU HR in 1000s Cooling Heating BTU Hr capacity listed in the Specificat...

Страница 9: ...17500 17300 230 208 7 2 7 7 1620 1570 10 8 10 8 4 5 375 M 169 163 SM21L30 20600 20200 230 208 9 4 10 1 2081 2020 9 9 10 0 6 0 425 M 160 154 SM24L30 23500 23000 230 208 11 2 12 1 2479 2421 9 5 9 5 7 0...

Страница 10: ...1 16 16 15 16 27 3 8 42 18 3 16 26 3 16 7 3 8 L 20 3 16 28 33 5 8 16 3 3 16 18 15 16 29 7 8 42 20 3 8 28 15 1 8 TWINTEMP models include accessories for thru the wall installation only Window mounting...

Страница 11: ...7 28 84 261 4 7 15 1 21 0 31 0 208 230 20 ES12L33 E 58 22 122 174 66 17 28 84 261 4 7 15 1 21 0 31 0 208 230 20 ES16L33 C 49 32 130 179 50 8 34 75 279 7 4 15 1 35 0 32 0 208 230 20 ES16L33 D 49 32 130...

Страница 12: ...size fuse circuit breaker Read electrical ratings on unit s rating plate Proper circuit protection is the responsibiity of the homeowner Grounding Unit MUST be grounded from branch circuit through ser...

Страница 13: ...l e r r o or time delay fuse does not exceed the amp rating listed in Figure 1 DO NOT use an extension cord The cord provided will carry the proper amount of electrical power to the t o n l l i w d r...

Страница 14: ...light on Smart Fan will adjust the fan speed e l p m a x e r o F l e v e l t r o f m o c d e r i s e d e h t n i a t n i a m o t y l l a c i t a m o t u a d o i r e p d e d n e t x e n a r o f n e p o...

Страница 15: ...PressSetHouroncetoseethecurrentclockset ting Continue pressing the button until you arrive at the current time MAKE SURE YOU SET THE A M AND P M PROPERLY NOTE MINUTES ARE NOT SHOWN ON THE DISPLAY A l...

Страница 16: ...ill adjust the fan speed automatically to maintain the desired comfort level For example if the outside doorsin your home are opened for an extended period of time or more people enter a room Smart Fa...

Страница 17: ...mode of operation 2 COOL Press the Cool button to automatically switch the operating mode to COOL 3 FAN ONLY Press the Fan Only button if you want to run the fan only 4 MoneySaver Press the MoneySaver...

Страница 18: ...o t g n i t t e s r i a e h t h t i w d e s u e b n a c t i r o m o o r e h t m o r f e k o m s r o r i a e l a t s e v o m e r Fresh Air d n a g n i r p s e h t n i y l l a i c e p s e m o o r e h t...

Страница 19: ...n on QME models Theindoortemperaturewilldisplayfor10seconds 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...

Страница 20: ...f 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 is present replace board E4 FROST PRO...

Страница 21: ...als C and 3 C2 and 2 H and M S AR and 5 System Control Switch Heat Pump Electric Heat Models 5 Hi Heat Position between terminals C and 1 C2 and 4 H and M S AR and 5 6 Med Heat Position between termin...

Страница 22: ...d room temp 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...

Страница 23: ...t anticipator is energized to supply a small amount of heat during the on cycle This will open the contacts in the thermostat prematurely to maintain a closer differential between the cut in and cut o...

Страница 24: ...rops below 20 the unit will operate in electric heat mode continuously until the outdoor coil temperature rises above 43 The fan motor will not turn off when defrost occurs and the 4 way valve will no...

Страница 25: ...refore the possibility of capacitor failure is much greater when the identified terminal is connected to the S or start terminal The identified terminal should always be connected to the supply line o...

Страница 26: ...3 KW heater 11 9 ohms for the 4 0 KW heater and 9 15 ohms for the 5 2 KW heater should be registered Figure 25 Heating Element DEFROST THERMOSTAT OPERATION HEAT PUMP WITH ELECTRIC HEAT YS YM AND YL MO...

Страница 27: ...un continuously MONEY SAVER Mode When in MONEY SAVER mode the system will be turned on when the indoor temperature gets above the set point by 0 75 F and turns off when the indoor temperature gets bel...

Страница 28: ...sed changed to a Liquid before leaving the condenser coil The refrigerant leaves the condenser Coil through the liquid line as a warm high pressure liquid It next will pass through the refrigerant dri...

Страница 29: ...g for the compressor motor When this occurs the motor winding temperature will increase causing the motor to overheat and possibly cycle open the compressor overload protector Continued overheating of...

Страница 30: ...FREEZE HAZARD Proper safety procedures must be followed and proper protective clothing must be worn when working with a torch Failure to follow these procedures could result in moderate or serious inj...

Страница 31: ...evaporator will not be encountered because the refrigerant will boil later if at all Gauges connected to system will usually have higher head pressure depending upon amount of over charge Suction pres...

Страница 32: ...a partial restriction there may be gurgling sounds at the metering device entrance to the evaporator The evaporator in a partial restriction could be partially frosted or have an ice ball close to th...

Страница 33: ...posite port liquid line to the indoor coil Refer to refrigerant flow chart This directs the refrigerant through the filter drier and cooling capillary tube to the indoor coil In the heating mode of op...

Страница 34: ...essure suction side of the system The other two are connected to the indoor and outdoor coils Small capillary tubes connect each end of the main valve cylinder to the A and B portsofthepilotvalve Athi...

Страница 35: ...n part of the discharge gas from the compressor is directed back to the suction side resulting in excessively high suction pressure Should the valve fail to shift from coooling to heating block the ai...

Страница 36: ...excess braze from all tubing so that they will slip into fittings on new valve 5 Remove solenoid coil from new valve The use of a torch requires extreme care and proper judgment Follow all safety reco...

Страница 37: ...ated within the compressor shell usually due to recycling of the motor is slow to dissipate It may take anywhere from a few minutes to several hours for the overload to reset Checking the External Ove...

Страница 38: ...ective If the compressor has been operating for sometime a careful examination must be made to determine why the compressor failed Many compressor failures are caused by the following conditions 1 Imp...

Страница 39: ...system will need to be cleaned up following proper procedures 7 Install the replacement compressor 8 Pressurize with a combination of R 22 and nitrogen and leak test all connections with an electronic...

Страница 40: ...all refrigerant and oil from the system Remove compressor capillary tube and filter drier from the system Flush evaporator condenser and all connecting tubing with dry nitrogen or equivalent Use appro...

Страница 41: ...and compressed air or vacuum If using a pressure washer be careful not to bend the aluminium fin pack Use a sweeping up and down motion in the direction of the vertical aluminum fin pack when pressure...

Страница 42: ...nd rinse with warm water Allow it to dry thoroughly before reinstalling it in the chassis ROUTINE MAINTENANCE Continued Do not drill holes in the bottom of the drain pan or the underside of the unit N...

Страница 43: ...Inoperative system switch Test switch replace if inoperative Broken loose or incorrect wiring Refer to applicable wiring diagram Open capacitor Test capacitor replace if inoperative Fan speed switch...

Страница 44: ...ck temp differential delta T across coil Touch test coil return bends for same temp Test for low running current n o i t c A e s u a C e l b i s s o P m e l b o r P Compressor runs continually does no...

Страница 45: ...k if unit operates If unit operates replace t stat Loose or broken parts in t stat Check as above Incorrect wiring Refer to appropriate wiring diagram Defective thermistor Replace thermistor or electr...

Страница 46: ...t cycles Defective thermistor Replace thermistor or electronic control board T stat differential too narrow Replace t stat Plenum gasket not sealing allowing discharge air to short cycle t stat Check...

Страница 47: ...ace defrost control Defrost control contacts stuck If contacts remain closed between terminals 2 3 of the defrost control after preselected time interval has passed replace control Defrost control bul...

Страница 48: ...ture rise across coil Refer to speci cation sheet for correct temperature rise Reversing valve failing to shift completely bypassing hot gas Deenergize solenoid coil raise head pressure energize solen...

Страница 49: ...r in System Overcharged Low Air ow Across Indoor Coil Outdoor Ambient Too High For Operation In Heating Moisture in System Defective Compressor Defective Compressor Undercharged Overcharged Undercharg...

Страница 50: ...place compressor Starts to shift but does not complete reversal Hot Warm Warm Hot TVB Hot Not enough pressure differential at start of stroke or not enough ow to maintain pressure differential Check u...

Страница 51: ...ELECTRONIC CONTROL COOL ONLY MODELS XQ05L10A C XQ06L10A C XQ08L10A B A E XQ10L10A C XQ12L10A B A C 49...

Страница 52: ...ELECTRONIC CONTROL COOL ONLY MODELS SS08L10 E F G SS10L10 D E SS12L10 E F SS14L10 D E SS12L30 E F SS16L30 D E SM18L30A D A E SM21L30 E F SM24L30 C D 50...

Страница 53: ...ELECTROMECHANICAL CONTROL COOL ONLY MODELS KS12L10 E F KS15L10 C D KM18L30 C D KM24L30 C D 51...

Страница 54: ...ELECTROMECHANICAL CONTROL COOL ONLY MODELS SL28L30 D E SL36L30A D A E 52...

Страница 55: ...ELECTROMECHANICAL CONTROL COOL WITH ELECTRIC HEAT MODEL EQ08L11A B A E 53...

Страница 56: ...ELECTROMECHANICAL CONTROL COOL WITH ELECTRIC HEAT MODELS ES12L33 D E ES16L33 C D EM18L34 C EM24L34 B 54...

Страница 57: ...ELECTROMECHANICAL CONTROL COOL WITH ELECTRIC HEAT MODELS EL36L35A D A E 55...

Страница 58: ...ELECTROMECHANICAL CONTROL HEAT PUMP ONLY MODELS YS09L10 F G 56...

Страница 59: ...ELECTROMECHANICAL CONTROL HEAT PUMP WITH ELECTRIC HEAT MODELS YS13L33 D E YM18L34 D E 57...

Страница 60: ...ELECTROMECHANICAL CONTROL HEAT PUMP WITH ELECTRIC HEAT MODELS YL24L35 E F 58...

Страница 61: ...thickness is considered Light Construction An insulated wall or masonry wall over 8 inches in thickness is considered Heavy Construction 3b Multiply the total length linear feet of all inside walls b...

Страница 62: ...FEET OF WIDTH 9 SUBTOTAL 10 TOTAL COOLING LOAD BTU per hour to be used for selection of room air conditioner s No Shades 60 80 75 75 110 150 120 0 ____sq ft ____sq ft ____sq ft ____sq ft ____sq ft ___...

Страница 63: ...e unit capacity line intersect read down to the outdoor ambient temperature scale and nd that this unit will deliver the required BTU Hr capacity to approximately 30 F The heat load form on the follow...

Страница 64: ...insulated Sq Ft x 0 10 Built up Roof 1 2 insulated Sq Ft x 0 20 No Insulation Sq Ft x 0 33 FLOOR Area Sq Ft Above Vented Crawl space Insulated 1 Sq Ft x 0 20 Uninsulated Sq Ft x 0 50 Slab on Ground Li...

Страница 65: ...stallation wiring electrical current 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 corros...

Страница 66: ......

Страница 67: ...IONING 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 TECHNICAL SUPPORT...

Страница 68: ...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 RAC Ser...

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