Friedrich SM21L30-A Service Manual Download Page 1 | Manualshive

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Service Manual

Room Air Conditioners

RAC-Svc-06 (3-06)

2006

Cool

SUPER HIG

H EFFICIEN

CY

Temp/Hour

Fan Only
Clock
Start
Stop

MoneySaver

®

PM

Vent shut

Exhaust

Fan

Speed

Timer

On/Off

Set

Hour

Power

On/Off

Mode

1
2
3
...
»

Summary of Contents for SM21L30-A

Page 1: ...ervice Manual Room Air Conditioners RAC Svc 06 3 06 2006 Cool SUPER HIGH EFFICIENCY Temp Hour Fan Only Clock Start Stop MoneySaver PM Vent shut Exhaust Fan Speed Timer On Off Set Hour Power On Off Mod...

Page 2: ...Filter Discharge Air Evaporator Coil Blower Wheel Capillary Tube Condenser Fan Blade Outdoor Grille Sleeve Condenser Coil Compressor Basepan Front Cover System Switches Reversing Valve some models Fr...

Page 3: ...warranty is not applicable to 1 Air filters or fuses 2 Products on which the model and serial numbers have been removed 3 Products which have defects or damage which results from improper installation...

Page 4: ...s and debris Clean both areas with an antibacterial and antifungal cleaner Rinse both items thoroughly with water and ensure that the drain outlets are operating correctly Check the sealant around the...

Page 5: ...ring Major change 2nd Digit C Casement Q Q Star S Small Chassis M Medium Chassis L Large Chassis H HazardGard 3rd and 4th Digit Approximate BTU HR Cooling Heating BTU Hr capacity listed in the Speci c...

Page 6: ...4 35 0 32 0 208 230 15 ES12L33 A 56 25 121 167 65 15 28 83 256 4 8 15 1 21 0 28 0 208 230 20 ES16L33 A 49 32 130 179 50 8 34 75 279 7 4 15 1 35 0 32 0 208 230 20 YS09L10 A 60 20 116 164 71 18 17 89 2...

Page 7: ...ord and be within reach of service cord Do NOT alter the service cord or plug Do NOT use an extension cord Refer to the table above for proper receptacle and fuse type ELECTRIC SHOCK HAZARD Turn off e...

Page 8: ...y improving the torque characteristics of the fan motor and compressor motor ELECTRONIC CONTROLS TESTING THE ELECTRONIC CONTROLS CHECK FILTER light will come on after 250 hours of use Touch CHECK FILT...

Page 9: ...estored to the unit there is a twoseconddelaybeforethefancomesonandapproximately three minutes delay before the compressor is activated providing that the mode was set for cooling and the set point te...

Page 10: ...dy 2 Heat must be added to or removed from a substance before a change in state can occur 3 Flow is always from a higher pressure area to a lower pressure area 4 The temperature at which a liquid or g...

Page 11: ...ressure to 150 PSIG with dry nitrogen 7 Leak test complete system with electric halogen leak detector correcting any leaks found 8 Reduce the system to zero gauge pressure 9 Connect vacuum pump to hig...

Page 12: ...compressor eventuallycausingamechanicalfailurewithinthecompressor This mechanical failure can manifest itself as valve failure bearing failure and or other mechanical failure The speci c type of failu...

Page 13: ...run 10 to 15 minutes check the gauge pressures Gauges connected to system with an undercharge will have low head pressures and substantially low suction pressures UNDERCHARGED REFRIGERANT SYSTEMS NOTE...

Page 14: ...compressor is running in a deep vacuum no load Much of the area of the condenser will be relatively cool since most or all of the liquid refrigerant will be storedthere The following conditions are ba...

Page 15: ...roke or not enough ow to maintain pres sure differential Check unit for correct operating pressures and charge Raise head pressure If no shift use valve with smaller port Body damage Replace valve Hot...

Page 16: ...t run 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 sw...

Page 17: ...y tube De ice coil Check temp differential delta T across coil Touch test coil return bends for same temp Test for low running current Problem Possible Cause Action Compressor runs continually does no...

Page 18: ...bulb Place jumper across t stat terminals to check 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...

Page 19: ...hort cycles T stat differential too narrow Replace t stat Plenum gasket not sealing allowing discharge air to short cycle t stat Check gasket Reposition or replace as needed Restricted coil or dirty l...

Page 20: ...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...

Page 21: ...eck temperature rise across coil Refer to speci cation sheet for correct temperature rise Reversing valve failing to shift completely bypassing hot gas De energize solenoid coil raise head pressure en...

Page 22: ...Compressor Undercharged Overcharged Refrigerant System Restriction Reversing Valve not Fully Seated Low Air ow Across Outdoor Coil Outdoor Ambient Too High for Operation in Heating Low Suction Pressu...

Page 23: ...23 MODEL SC06H10D...

Page 24: ...24 MODELS XQ05L10 A B XQ06L10 A B C D XQ08L10 A B XQ10L10 A B XQ12L10 A B...

Page 25: ...25 MODELS KS10L10 A RS10L10 A KS12L10 A KS12L30 A KS15L10 A RS15L10 A RS16L30 A RM18L30 A KM18L30 A KM21L30 A RM24L30 A KM24L30 A...

Page 26: ...26 MODELS SS08L10 A B SS10L10 A B SS12L10 A B SS12L30 A B SS14L10 A B SS16L30 A B SM18L30 A B SM21L30 A B SM24L30 A B...

Page 27: ...27 MODEL SL36L30 A...

Page 28: ...28 MODEL SL28L30 A...

Page 29: ...29 MODELS SL36L30 B...

Page 30: ...30 MODEL EQ08L11 A...

Page 31: ...31 MODELS ES12L33 A ES16L33 A EM18L34 A EM24L35 A...

Page 32: ...32 MODEL EL36L35 A...

Page 33: ...33 MODEL YS09L10 A YS09L10 B...

Page 34: ...34 MODELS YS13L33 A YM18L34 A...

Page 35: ...35 MODELS YL24L35 A...

Page 36: ...6 3 06 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...

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