Friedrich EQ08M11 manual

Service Manual R-410A Models R o o m A i r C o n d i t i o n e r s 2 0 1 1 Cool Only Cool with Electric Heat X-Star-ServMan (1-1 1) 1 15-V olt: XQ05M10 * , XQ06M10 * , XQ08M10 * , XQ10M10 * 1 15-V olt: EQ08M1 1 * * Last character may vary . M one y F a n Se t H r . St o p S t a r t T e m pe r a t ur e F a n Coo l On/ Coo l er War m e r On l y S p e[...]

1 T able Of Contents Important Safety Information .......................................................................................................................................... 2-4 Unit Identifi cation .......................................................................................................................................[...]

IMPORT ANT SAFETY INFORMA TION The information contained in this manual is intended for use by a qualifi ed service technician who is familiar with the safety procedures required for installation and repair , and who is equipped with the proper tools and test instruments required to service this product. Installation or repairs made by unqualifi [...]

• Do not spray or pour water on the return air grille, discharge air grille, evaporator coil, control panel, and sleeve on the room side of the air conditioning unit while cleaning. • Electrical component malfunction caused by water could result in electric shock or other electrically unsafe conditions when the power is restored and the unit is[...]

PROPERTY DAMAGE HAZARDS FIRE DAMAGE HAZARDS: • Read the Installation/Operation Manual for this air conditioning unit prior to operating. • Use air conditioner on a single dedicated circuit within the specifi ed amperage rating. • Connect to a properly grounded outlet only . • Do not remove ground prong of plug. • Do not cut or modify the[...]

Serial Number Decade Manufactured L=0 C=3 F=6 J=9 A=1 D=4 G=7 B=2 E=5 H=8 A A A Y 00001 Production Run Number Y ear Manufactured A=1 D=4 G=7 K=0 B=2 E=5 H=8 C=3 F=6 J=9 Product Line X-Start Month Manufactured A=Jan D=Apr G=Jul K=Oct B=Feb E=May H=Aug L=Nov C=Mar F=Jun J=Sept M=Dec 1st Digit – Function E = Electric Heat X = Straight Cool 2nd Digit[...]

PERF ORM ANCE DA T A * Installation Inf ormation / Sl eev e Dimensions * Min imum exte nsi ons w hen m oun ted in a w ind ow. ** M ini mum w idt hs ac hi eved usi ng on e si de cu r ta in as sem bly as opp ose d to bo th in a s tan dar d inst al lat ion. Cir cuit Rating/ Break er (B) (C) F ront SIDE VIEW Mo del C ir cu it R at in g Br ea ker o r T [...]

ELECTRICAL D A T A ELECTRIC SHOCK HAZARD W ARNING Tur n of f el e c t ri c p ow e r b ef o r e s e r v ic e o r installation. All el ect ri cal con ne ct io ns an d wiri ng MUS T be in sta ll ed b y a qu al ifi e d el ec tr ic i an a nd co n f or m to th e Na tio n al Ele ct rica l Cod e an d al l lo cal code s wh ic h h a v e j u ris d ict io n .[...]

ELECTRICAL SHOCK HAZARD W ARNING Make sure your electrical receptacle has the same configuration as your air conditioner’s plug. If different, consult a Licensed Electrician. Do not use plug adapters. Do not use an extension cord. Do not remove ground prong. Always plug into a grounded 3 prong outlet. Failure to follow these instructions can resu[...]

T o st a r t u n i t s i t i , e l c a t p e c e r r e p o r p a o t n i d e g g u l p d n a d e l l a t s n i s i r e n o i t i d n o c r i a r u o y f I rea dy t o go . The firs t tim e the u ni t i s sta rted , the co mpr ess or wi ll d el ay f or t hre e minut es. See Autom atic Compone nt Protectio n on the followin g page . 1 T ouc h the Powe[...]

T o s e t t h e t i m e r NOTE: Y ou can set the ST ART and STOP times a mini mum of one ho ur apart, and a maximum of 23 hours apart. 9 TIMER ST AR T - Press Star t . g n i l o o c r o f e m i t t r a t s t n e r r u c e h t w e i v o t Continue pressing the Star t button until you arrive at the start time you desi re. The star t time for cooling [...]

MODE CONTROL The mode control pad(s) allow the selection of the operating modes of the unit. There is a two second delay before the mode activates its appropriate relay . OPERA TING SEQUENCE / CHARACTERISTICS AND FEA TURES Compressor Operation The run state of the compressor is determined by the difference between the indoor ambient temperature and[...]

ME C HANI C AL C OMPON EN TS P len um asse mb ly Diffu se r wit h di r ect i on al lou v ers us e d to di r ec t th e co n di ti one d a ir fl o w . Bl ow er wh eel A ttac he s to th e in d oo r sid e of t he fa n mo t or sh a ft and is us ed for dis trib ut i ng unco n di ti o ne d , roo m sid e ai r th ou gh th e he a t ex ch an ge r an d del iv[...]

13 TESTING THE ELECTRONIC CONTROL BOARDS FOR XQ MODELS Activating T est Mode: Activate test mode by pressing at the same time the “MODE” button and the “TEMP ” button on XQ models . LEDs for Hour , Start, and Stop will blink 1 bps while T est Mode is active. T est Mode has duration of 90 minutes. T est Mode can be activated under any condit[...]

TEST : 1 . Remov e leads from ther mostat . 2. Tu r n t h e r m o s t a t k n o b c l o c k w i s e t o i t s c o l d e s t position. 3. T est for continuity between t he t wo terminals. Contacts should be clos ed. 4. T urn thermost at knob counterclo ck wise to its warmest position. 5. T est for continuit y - c ontact s should be open. NOTE: The t[...]

CAP ACIT ORS ELECTRIC SHOCK HAZARD W ARNING T urn off electric power before servicing. Discharge capacitor with a 20,000 Ohm 2 W att resistor before handling. Failure to do so may result in personal injury , or death. Many motor capacitors are internally fused. Shorting the terminals will blow the fuse, ruining the capacitor . A 20,000 ohm 2 watt r[...]

HEA TING ELEMENT (See Figure) All elect ric heat mod els are equi ppe d with a heat ing e lem ent . The EQ08 has a 1.15 KW element. The heating element contains a fuse link and a heater limit switch. The fuse link is in series with the power supply and will open and interrupt the power when the temperature reaches 199°F or a short circuit occurs i[...]

Suction Line Evaporator Coil Metering Device Refrigerant Strainer Discharge Line Condenser Coil Compressor Refrigerant Drier Liquid Line A good understanding of the basic operation of the refrigeration system is essential for the service technician. Without this understanding, accurate troubleshooting of refrigeration system problems will be more d[...]

• R-410A pressure is approximately 60% higher than R-22 pressure. • R-410A cylinders must not be allowed to exceed 125 F , they may leak or rupture. • R-410A must never be pressurized with a mixture of air , it may become fl ammable. • Servicing equipment and components must be specifi cally designed for use with R-410A and dedicated to p[...]

Proper refrigerant charge is essential to proper unit operation. Operating a unit with an improper refrigerant charge will result in reduced performance (capacity) and/or effi ciency . Accordingly , the use of proper charging methods during servicing will insure that the unit is functioning as designed and that its compressor will not be damaged. [...]

3. Install a process tube to sealed system. 4. Make necessary repairs to system. 5. Evacuate system to 200 microns or less. 6. Weigh in refrigerant with the property quantity of R410-A refrigerant. 7. Start unit, and verify performance. 8. Crimp the process tube and solder the end shut. Proper safety procedures must be followed, and proper protecti[...]

Underchar ged R efrigerant Systems An undercharged system will result in poor performance (low pressures, etc.) in both the heating and cooling cycle. Whenever you service a unit with an undercharge of refrigerant, always suspect a leak. The leak must be repaired before charging the unit. T o check for an undercharged system, turn the unit on, allo[...]

R estricted R efrigerant System T roubleshooting a restricted refrigerant system can be diffi cult. The following procedures are the more common problems and solutions to these problems. There are two types of refrigerant restrictions: Partial restrictions and complete restrictions. A partial restriction allows some of the refrigerant to circulate[...]

Lock ed Rotor V oltage (L.R.V .) T est Locked rotor voltage (L.R.V .) is the actual voltage available at the compressor under a stalled condition. Single Phase Connections Disconnect power from unit. Using a voltmeter , attach one lead of the meter to the run “R” terminal on the compressor and the other lead to the common “C” terminal of th[...]

Single Phase Resistance T est Remove the leads from the compressor terminals and set the ohmmeter on the lowest scale (R x 1). T ouch the leads of the ohmmeter from terminals common to start (“C” to “S”). Next, touch the leads of the ohmmeter from terminals common to run (“C” to “R”). Add values “C” to “S” and “C” to “[...]

R ecommended procedure for compr essor replacement 1. Be certain to perform all necessary electrical and refrigeration tests to be sure the compressor is actually defective before replacing. 2. Recover all refrigerant from the system though the process tubes. PROPER HANDLING OF RECOVERED REFRIGERANT ACCORDING TO EP A REGULA TIONS IS REQUIRED. Do no[...]

1. 2. 3. 4. 5. ELECTRIC SHOCK HAZARD W ARNING T urn off electric power before service or installation. Failure to do so may result in personal injury , or death. S e al e d R e f ri ge r a t io n Sy s t e m c o nt a i n s r e fr ig e r a nt a n d o i l u nd e r hi g h pr e s s ur e. Proper safety procedures must be followed, and proper protective c[...]

R OUTINE MAINTENANCE AIR FIL TER Clean the unit air intake fi lter at least every 300 to 350 hours of operation. Clean the fi lters with a mild detergent in warm water and allow to dry thoroughly before reinstalling. COILS AND BASE P AN The indoor coil (evaporator coil), the outdoor coil (condenser coil) and base pan should be inspected periodica[...]

SLEEVE / DRAIN Inspect the sleeve and drain system periodically (at least yearly or bi-yearly) and clean of all obstructions 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 sleeve and reseal are[...]

29 29 Due to variations in room design, climate zone and occupancy , larger areas may require the use of multiple units to provide the optimal cooling solution. This is a general guide. Please consult manual J or M for exact load calculations. 1. If heavily shaded, reduce capacity 10%. 2. If very sunny , add 10%. 3. Add 500 BTU/H per person over 2 [...]

Problem Possible Cause Possible Solution Unit does not operate. The unit is turned to the off position, T urn the unit to the on position and raise or lower temperature setting (as appropriate) to call for operation. The LCDI power cord is unplugged. Plug into a properly grounded 3 prong receptacle. See “Electrical Rating T ables” on pg. 6 for [...]

Unit Does Not Cool/Heat On And Off T oo Frequently (continued). The outside temperature is below 60° F (16° C). Do not try to operate your air conditioner in the cooling mode when the outside temperature is below 60° F (16° C). The unit will not cool properly , and the unit may be damaged. The digital control is set to fan cycling mode. Since t[...]

COOLING ONL Y ROOM AIR CONDITIONERS: TR OUBLESHOO TING TIPS 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 does not run Low voltage Check voltage at compressor . 1 15V & 230V units will operate at 10% voltage variance T -stat not set cold enough or inoperative or electronic control board is bad Set t-stat to coldest position. T [...]

COOLING ONL Y ROOM AIR CONDITIONERS: TR OUBLESHOO TING TIPS 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 Unit does not run Fuse blown or circuit tripped Replace fuse, reset breaker . If repeats, check fuse or breaker size. Check for shorts in unit wiring & components Power cord not plugged in Plug it in System switch in “OFF” positio[...]

COOLING ONL Y ROOM AIR CONDITIONERS: TR OUBLESHOO TING TIPS 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 for short periods only . Cycles on overload Overload inoperative. Opens too soon Check operation of unit. Replace overload if system operation is satisfactory Compressor restarted before system pressures equalized Allow a [...]

COOLING ONL Y ROOM AIR CONDITIONERS: TR OUBLESHOO TING TIPS 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 W ater “spitting” into room Sublimation: When unconditioned saturated, outside air mixes with conditioned air , condensation forms on the cooler surfaces Ensure that foam gaskets are installed in between window panes & in between [...]

HEA T / COOL ONL Y R OOM AIR CONDITIONERS: TR OUBLESHOO TING TIPS 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 Roo m t empe rat ure une ven (He ati ng cycl e) Hea t a ntic ipa tor (r esi sto r) s hor ted (o n a ppl icab le mod els ) Dis con nec t po wer to un it. Rem ove re sis tor fro m t-s tat bul b b loc k. P lug in uni t & all ow to [...]

37 ELECTR ONIC CONTR OL COOL ONL Y MODELS: XQ05M10 * XQ06M10 * XQ08M10 * XQ10M10 * * Last character may vary .[...]

38 ELECTR OMECHANICAL CONTR OL COOL WITH ELECTRIC HEA T MODEL: EQ08M11 * * Last character may vary .[...]

4 INSTRU CTIONS F OR USING COOLING LO AD ESTIMA TE F ORM FOR R OOM AIR CONDITIONERS (AHAM PUB. NO. RAC-1) A. This cooling load estimate form is suitable for estimating the cooling load for comfort air conditioning installations which do not require specifi c conditions of inside temperature and humidity . B. The form is based on an outside design [...]

5 COOLING L O AD ESTIMA TE F ORM HEA T GAIN FROM 1. WINDOWS: Heat gain from the sun. Northeast East Southeast South Southwest West Northwest North 2. WINDOWS: Heat by conduction (T otal of all windows.) Single glass Double glass or glass block 3. W ALLS: (Based on linear feet of wall) a. Outside walls North Exposure Other than North exposure b. Ins[...]

6 F ol lo wi ng is a n e x amp le u si ng the h eat loa d form: A sp ace to be con dit i on e d is pa rt o f a ho u se geo gr ap hica l ly lo ca t ed in a n are a wh er e th e lo w es t ou tdo or a mb i en t wi n t er te mpe ra tur e is 40° F . Th e cal cu l at ed h e at lo ss i s 1 84 B TU/ Hr . / °F . Su b tr a ct 40°F ( lo w es t ou t do or a[...]

7 HEA TING LOAD FORM FRIEDRICH ROOM UNIT HEA T PUMPS BTU/HR PER W ALLS: (Linear Feet) °F TEMP . DIFFERENCE 2” Insulation Lin. Ft. x 1.6 A verage Lin. Ft. x 2.6 WINDOWS & DOORS (Area, sq. ft.) Single Glass: Sq. Ft. x 1.13 Double Glass: Sq. Ft. x 0.61 INFIL TRA TION - WINDOWS & DOORS: A VG. Lin. Ft. x 1.0 Loose Lin. Ft. x 2.0 CEILING : (Ar[...]

43 Frie dr ic h Ai r Con di t ion in g Com pa ny 10001 Reunion Place, Suite 500 San A nton io, T X 78216 1-800-541-6645 ww w .fried rich.com R OOM AIR CONDI TIONER S LIMITED W ARR ANT Y FIRST YEA R AN Y PART : If a ny par t supp lie d by FR IED RIC H fa ils bec aus e of a defe ct in wo rk mans hip or m ater ial wit hin t we lve m onth s f rom date [...]

TECHNICAL SUPPORT CONT ACT INFORMA TION 44 FRIEDRICH AIR CONDITIONING CO. 10001 Reunion Place, Ste. 500, San Antonio, TX 78216 (210) 546-0500 877-599-5665 x 261 F AX (210) 546-0731 Email: tac@friedrich.com www .friedrich.com Printed in the U.S.A.[...]

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X-Star-ServMan (1-1 1) FRIEDRICH AIR CONDITIONING CO. 10001 Reunion Place, Ste. 500, San Antonio, TX 78216 P 210-546-0500 | F 210-546-0731 www .friedrich.com Printed in the U.S.A.[...]