Friedrich XStar EQ08M11-A Service Manual Download Page 1

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Service Manual

R-410A Models

Room Air Conditioners

2 0 1 0

X-Star-ServMan (4-10)

115-Volt: XQ05M10A, XQ06M10A, XQ08M10A, XQ10M10A

Cool Only

115-Volt: EQ08M11A

Cool with Electric Heat

Money

Fan

Set Hr.

Stop

Start

Temperatu

Fan

Cool

On/

Cooler

Warmer

Only

Speed

Saver

Power

Timer Ope

ration

Summary of Contents for XStar EQ08M11-A

Page 1: ...nditioners 2 0 1 0 X Star ServMan 4 10 115 Volt XQ05M10A XQ06M10A XQ08M10A XQ10M10A Cool Only 115 Volt EQ08M11A Cool with Electric Heat Money Fan Set Hr Stop Start Temperature Fan Cool On Cooler Warme...

Page 2: ...e the EQ 10 Electronic Control Sequence of Operation 11 Functional Component Definition 12 Components Testing 13 16 Refrigeration Sequence of Operation 17 R 410A Sealed System Repair Considerations 18...

Page 3: ...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...

Page 4: ...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...

Page 5: ...or not following the above Safety Warnings can result in water damage to personal items or property Insure that the unit has a sufficient pitch to the outside to allow water to drain from the unit Do...

Page 6: ...M Dec 1st Digit Function E Electric Heat X Straight Cool 2nd Digit Q Q Star Chassis Size 3rd and 4th Digit Approximate BTU HR in 1000s Cooling Heating BTU Hr capacity listed in the Specification Perf...

Page 7: ...eve Height Width Depth with Front Shell Depth to Louvers Minimum Extension Into Room Minimum Extension Outside Window Width Thru the wall Installation Finished Hole Minimum Maximum Height Width Max De...

Page 8: ...ze 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 servi...

Page 9: ...e h t f o g n i t a r e g a r e p m a e h t t a h t e r u s e b t i n u s i h t e t a c o 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 T...

Page 10: ...example if the outside doorsin your home are opened for an extended period of time or more people enter a room Smart Fan may adjust to a higher fan speed to compensate for the increased heat load Thi...

Page 11: ...he fan only 4 MoneySaver Press the MoneySaver button to activate the MoneySaver feature This feature cycles the fan with the compres sor so that the fan does not run all the time To adjust temperature...

Page 12: ...the fan will turn on for a period of 90 seconds for air sampling Operation in MONEY SAVER mode will light both the MONEY SAVER and COOL indicators ELECTRONIC CONTROL SEQUENCE OF OPERATION 11 FAN ONLY...

Page 13: ...hoot ing refer to the wiring diagrams and schematics in the back of this service manual Capacitor Reduces line current and steadies the voltage supply while greatly improving the torque characteristic...

Page 14: ...rature set point will appear COMPONENTS TESTING ERROR CODE LISTINGS E1 SHORT CYCLE SITUATION Defined as compressor powered on before the three minute time delay ten times in one hour Investigate and c...

Page 15: ...mation on thermostat testing THERMOSTAT ADJUSTMENT No attempt should be made to adjust thermostat Due to the sensitivity of the internal mechanism and the sophisticated equipment required to check the...

Page 16: ...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 or R termin...

Page 17: ...the connecting wires have been removed A cold resistance reading of approximately 10 11 ohms for the 1 15 KW heater should be registered Figure Heating Element DRAIN PAN VALVE During the cooling mode...

Page 18: ...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...

Page 19: ...410A equipment To prevent moisture absorption and lubricant contamination do not leave the refrigeration system open to the atmosphere longer than 1 hour Weigh in the refrigerant charge into the high...

Page 20: ...ad failure SealedRefrigerationSystemcontainsrefrigerant and oil under high pressure Proper safety procedures must be followed and proper protective clothing must be worn when working with refrigerants...

Page 21: ...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 in...

Page 22: ...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...

Page 23: ...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...

Page 24: ...Test NOTE Consult the speci cation and performance section for running amperage The L R A can also be found on the rating plate Select the proper amperage scale and clamp the meter probe around the wi...

Page 25: ...oint of contact as a good connection is a must and the other probe in turn to each compressor terminal If a reading is obtained the compressor is grounded and must be replaced Check the complete elect...

Page 26: ...em will need to be cleaned up following proper procedures 7 Install the replacement compressor 8 Pressurize with a combination of R410 A and nitrogen and leak test all connections with an electronic o...

Page 27: ...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 approved...

Page 28: ...ems Allow all items to dry thoroughly before reinstalling them ELECTRONIC ELECTRICAL MECHANICAL Periodically at least yearly or bi yearly inspect all control components electronic electrical and mecha...

Page 29: ...thoroughly before reinstalling it in the chassis CLEARANCES Inspect the surrounding area inside and outside to ensure that the unit s clearances have not been compromised or altered ROUTINE MAINTENAN...

Page 30: ...MPS AMPS RUNNING AMPERAGE DRAW AMPS INDOOR TEMPERATURES INDOOR AMBIENT TEMPERATURE F RELATIVE HUMIDITY RH INDOOR COOL HEAT DISCHARGE AIR TEMPERATURE INDOOR F F RETURN AIR TEMPERATURE INDOOR F F OUTDOO...

Page 31: ...I Power Cord Trips Reset Button Pops Out The LCDI power cord can trip Reset button pops out due to disturbances on your power supply line Press and release RESET listen for click Reset button latches...

Page 32: ...size is then selected to meet the heating load In extreme northern climates room air conditioners may not be able to be used as a primary source of heat Unit Runs Too Much This may be due to an exces...

Page 33: ...es not 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 spe...

Page 34: ...Check 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...

Page 35: ...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 electronic control board...

Page 36: ...ycles 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 gas...

Page 37: ...uring ON cycle of compressor or fan 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 Does not heat adequately Opened doors or windows Close doors or windows Dirty l a u n a M s r e n w O n i d e d...

Page 38: ...ELECTRONIC CONTROL COOL ONLY MODELS XQ05M10A XQ06M10A XQ08M10A XQ10M10A 37...

Page 39: ...ELECTROMECHANICAL CONTROL COOL WITH ELECTRIC HEAT MODEL EQ08M11A 38...

Page 40: ...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...

Page 41: ...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 ___...

Page 42: ...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...

Page 43: ...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...

Page 44: ...damage which results from improper installation wiring electrical current characteristics or installed in a corrosive atmosphere default or delay in performance caused by war government restrictions...

Page 45: ...ox 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...

Page 46: ......

Page 47: ...Man 4 10 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 i...

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