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Goodmans DSZ - page 1
RS6200006r11 April 2009 This manual is to be used by qualified, professionally trained HV AC techni- cians only . Goodman does not assume any responsibility for property damage or personal injury due to improper service procedures or services performed by an unqualified person. Copyright © 2006 - 2009 Goodman Manufacturing Company, L.P. SSX, ASX, ...
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Goodmans DSZ - page 2
Pride and workmanship go into every product to provide our customers with quality products. It is possible, however, that during its lifetime a product may require service. Products should be serviced only by a qualified service technician who is familiar with the safety procedures required in the repair and who is equipped with the proper tools, p ...
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Goodmans DSZ - page 3
SAFE REFRIGERANT HANDLING While these items will not cover every conceivable situation, they should serve as a useful guide. IMPORT ANT INFORMA TION The successful development of hermetically sealed refrigera- tion compressors has completely sealed the compressor's moving parts and electric motor inside a common housing, minimizing refrigerant ...
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Goodmans DSZ - page 4
PRODUCT IDENTIFICA TION 4 M ode l # D e sc r ipti on GSZ 1 3 ** 1 A A G o o dm an S pl i t Z R4 10A He at Pu m p 13 See r R 410 A h eat pum p u nit s. I ni t i al r ele ase wi t h Reg al B el oi t mot or . GSZ 1 3 ** 1 A B G o o dm an S pl i t Z R4 10A He at Pu m p 13 See r R 410 A h eat pum p u nit s. I ni t i al r ele ase wi t h Br oad O c ean m ...
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Goodmans DSZ - page 5
PRODUCT IDENTIFICA TION 5 M o de l # D e sc r ip t i o n A SZ1 30* * 1 AA A ma n a ® Bran d S pl it Z R41 0A hea t pu m p 13 S ee r h eat pum p un it s. I ni t i al r el ease of Am an a ® B ran d 13 SE E R He at P ump R41 0A. A SZ1 40* * 1 AA A ma n a ® Bra n d S pl it Z R41 0A hea t pu mp 14 S ee r h eat pum p u n it s. I ni t i al r el ease of ...
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Goodmans DSZ - page 6
PRODUCT IDENTIFICA TION 6 M ode l # D es c ri pt io n GS X 1 30 * *1 A A G oo d m a n S pl it X Co n den ser 13 S ee r co nde ns in g uni t s. I n t ro duc t io n of G oo dma n 13 SEER R -4 1 0A Co n de n se rs w i t h R e g a l Be l oi t m o t o rs GS X 1 30 * *1 A B G oo d m a n S pl i t X Co nde nser 13 S e er c ond ensi ng un it s . I nt r odu ...
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Goodmans DSZ - page 7
PRODUCT IDENTIFICA TION 7 M ode l # D e s c r i pt io n ASX13 0 * * 1AA Am an a® Br an d S pl it X Co nde nser 13 S e er co nd ens i ng u nit s . I ni ti al r el ea s e n ew m od els of Aman a® Bra n d D e l u xe 1 3 SEER A C R 4 1 0 A co n d iti o n ers. ASX13 0 * * 1BA Am an a® Br an d S pl it X Co nde nser 13 S e er co nd ens i ng u nit s . I ...
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Goodmans DSZ - page 8
PRODUCT IDENTIFICA TION 8 Mo del # Description ARUF****16AA A Single Piece R Multi-Position PSC Motor U npainted F lowrater Introducation of new 13 SEER Air Handler Models . All Models will be suitable f or use with R- 22 and R-410A ARUF364216AB A Single Piece R Multi-Position PSC Motor U npainted F lowrater.Revision replaces the c urrent spot weld ...
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Goodmans DSZ - page 9
PRODUCT IDENTIFICA TION 9 M o de l # D e s c ri pt i o n AEPF** * * 1 6 AA A Si ng l e Pi e ce E Mu lt i- P os i t i on Var i ab le- S p eed P ai n te d F lo w r at or . I n t r o d uc a t i o n of new 13 S E ER A ir Ha ndl er M od els . A ll M od el s w ill b e sui t a ble f or us e w it h R- 22 a nd R-41 0A AEPF** * * 1 6 BA A Si ng l e Pi e ce E ...
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Goodmans DSZ - page 10
PRODUCT IDENTIFICA TION 10 M o de l # D esc ri pt i o n MBR* * * * AA-1 AA M od ul ar B lo wer R Mu lt i-Po s it io n PS C M o to r. I n t r od u ces mo du l e b l ow e r w i th P S C b l o w er m o to r. M BE * *** AA -1A A M o dul ar B lo w er E Mu l t i- Po s i t i on V a r i abl e- S p eed . I nt rodu c es m o dul e blo we r w it h v aria bl e ...
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Goodmans DSZ - page 11
PRODUCT IDENTIFICA TION 11 SSZ 1 4 3 6 1 A A P R OD U CT T Y P E : X : C ond ens e r R - 4 10 A Z : He at Pu m p R- 410 A P RO D U C T FA M IL Y : S: Sp l i t Syst e m SEER : SEER R a t i ng B R AN D: G: G o o d m a n ® (S t a n da rd F e a tu r e S e t) S : G oo dm an® ( Hi g h F e a tu r e S e t) A : Am an a® B r a n d D e lu x e D: Del uxe G ...
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Goodmans DSZ - page 12
PRODUCT IDENTIFICA TION 12 MB R 8 00 A A 1 D ESI G N SER I ES: MB: Mo d u l a r Bl o w e r MO T OR T Y P E : R: Con sta nt S p eed E: Va ri a b le Sp e e d AI RF L OW D ELI V ERE D 08 : 800 C F M 12 : 12 00 CF M 16 : 16 00 CF M 20 : 20 00 CF M FA C T OR Y H E A T 00: N o H e at EL EC T R ICA L SU PPLY: 1 : 20 8-23 0V/ 6 0h Z /1 p h C I R CUI T BR E ...
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Goodmans DSZ - page 13
PRODUCT IDENTIFICA TION 13 All Airhandlers use DIRECT DRIVE MOTORS . Power supply is AC 208-230v, 60 hz, 1 phase. A W U F 3642 1 6 A A PR O D U CT TYPE: A: Ai r H a n d l er CA BI NET F I NI S H: U: Unp ain t e d P: P a ited N: Unca sed EXPA N SIO N DEV I CE: F: Fl ow r a te r T: TX V (Exp a ns i on D e vice ) N O M IN A L CA P A C ITY R A N G E : ...
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Goodmans DSZ - page 14
ACCESSORIES 14 AS X 1 3 Model Descrip tion ASX1 3 018 ASX13 024 ASX13 030 ASX1 3 036 ASX13 042 ASX13 0418 ASX13 060 A S C 0 1 A n t i - S h o r t C y c l e K i t XXXXXXX CSR- U-1 Hard- s tar t K it X X X X CSR- U-2 Hard- s tar t K it X X X X CSR- U-3 Hard- s tar t K it XX FSK01A 1 F r e e z e P r o t e c t i o n K i t XXXXXXX TX2N 4³ TXV Kit X TX3 ...
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Goodmans DSZ - page 15
15 ACCESSORIES DSX/SSX16 ASX16 Mode l D e scri pt ion D/S S X1 6 024 D/SSX16 03 0 D/ SS X 1 6 03 6 D/ S S X 1 6 042 D/ S S X 16 04 8 D/S S X 1 6 06 0 ASC 0 1 A nt i- Sh o r t Cy cle K i t X X XX XX CSR - U -1 H a r d- s ta rt K it XXX CSR - U -2 H a r d- s ta rt K it X X X X CSR - U -3 H a r d- s ta rt K it XX FS K 01 A 1 F reeze P rotec t i o n Ki ...
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Goodmans DSZ - page 16
ACCESSORIES 16 ASX18 Model Descri ption ASX18 036 ASX18 048 ASX18 060 ASC01 Anti-Short Cycle Ki t XXX CSR- U - 1 Hard-start Kit X CSR- U - 2 Hard-start Kit XXX CSR- U - 3 Hard-start Kit XX FSK01A 1 Freeze Protection Kit XXX TX2N4³ T XV Kit TX3N4³ T XV Kit X TX5N4³ T XV Kit XX 1 Installed on indoor coil 2 Required f or heat pu mp application s wh ...
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Goodmans DSZ - page 17
17 ACCESSORIES AS Z1 3 Model D escri ption ASZ13 018 ASZ13 024 ASZ13 030 ASZ13 036 ASZ13 042 ASZ13 048 ASZ13 060 A F E 1 8 - 6 0 A A l l - F u e l K i t XXXXXXX A S C 0 1 A n t i - S h o r t C y c l e K i t XXXXXXX CSR-U- 1 Hard-start Kit X X X X CSR-U- 2 Hard-start Kit XXXX CSR-U- 3 Hard-start Kit XX FSK01A 1 F r e e z e P r o t e c t i o n K i t ...
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Goodmans DSZ - page 18
ACCESSORIES 18 DSZ/SSZ16 ASZ16 Mode l D es cr ipt io n D/ S S Z1 6 02 4 D/ S S Z16 030 D/S S Z 16 03 6 D/S SZ1 6 04 2 D/S S Z16 048 D/S S Z1 6 06 0 A F E 18 -6 0A A ll -F u el K it X X X X X X ASC 0 1 An t i - S h or t C y cl e K i t X X X X X X CSR - U - 1 H ar d- s ta r t K i t X X X CSR - U - 2 H ar d- s ta r t K i t X X X X CSR - U - 3 H ar d- ...
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Goodmans DSZ - page 19
19 ACCESSORIES ASZ18 Mode l Descrip tion ASZ18 036 ASZ18 048 ASZ18 060 AFE18-60A All-Fuel Kit X X X ASC01 Anti-Short Cycle Kit X X X CSR-U-1 Hard-sta rt Kit X CSR-U-2 Hard-sta rt Kit X X X CSR-U-3 Hard-sta rt Kit X X FSK01A 1 Freeze Protect ion Kit X X X OT/EH R18-60 Emergency Heat Rel ay Kit X X X OY/EH R 18-60 Emerge ncy He at R elay Kit X X X OT ...
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Goodmans DSZ - page 20
ACCESSORIES 20 SUCTION LINE BULB 1/4 FLARE CONNECTION EXPANSION VAL VE EVAPORATOR COIL REMOVE B EFORE INSTALLI NG EXP ANSI ON VALVE SEAL SUPPL IE D W/ KIT SEAL SUPPLIED W/ KIT BULB TO BE LOCATED AT 10 OR 2 O'C LOCK For Applications requiring a field installed access fitting TA ILPI EC E 3/8"- SWEAT 7/ 8" NU T DISTRI BUTOR BOD Y PIS T ...
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Goodmans DSZ - page 21
21 ACCESSORIES FSK01A FREEZE THERMOST A T KIT T2 T1 L2 L1 B LAC K 1 TH ERMOST AT WI RE S HOR T CY CLE PR OTE CTOR Y ELLOW 1 B LAC K 1 Y1 Y2 R1 R2 Y C UN I T TERMI NA L BO AR D CO NT A CT OR ASC01A ANTI-SHORT -CYCLE CONTROL KIT I nsta ll Lin e Th er mo st at Here In stal l Li ne Th er mo st at Here Wi r e N u t Wi r e N u t Y Y B l a c k B l a c k W ...
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Goodmans DSZ - page 22
ACCESSORIES 22 COIL ACCESSORIES HKR SERIES ELECTRIC HEA T KITS ARPF1824 1/16 ARPF1931 1/16 ARPF3030 1/16 ARPF3642 1/16 ARPF3743 1/16 ARPF4860 1/16 HKR-03* X X X X X X HKR-05*, HKR-05C* X X X X X X HKR-06* X X X X X X HKR-08*, HKR-08C* X 1 X 1 XXXX HKR-10*, HKR-10C* X 1 X 1 X 1 XXX HKR-15C* X 2 X 2 X 2 X 3 X 3 X HKR-20C* X 2 X 3 X 3 X HKR-21C* X 2 X ...
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Goodmans DSZ - page 23
23 ACCESSORIES ARUF1729 1/16 ARUF1824 1/16 ARUF1931 1/16 ARUF3030 1/16 ARUF3642 1/16 ARUF3743 1/16 ARUF4860 1/16 HKR-03* XXXXXXX HKR-05*, HKR-05C* XXXXXXX HKR-06* XXXXXXX HKR-08*, HKR-08C* X 1 X 1 X 1 XXXX HKR-10*, HKR-10C* X 1 X 1 X 1 X 1 XXX HKR-15C* X 2 X 2 X 2 X 2 X 3 X 3 X HKR-20C* X 2 X 3 X 3 X HKR-21C* X 2 X 3 X 3 X ^ HKR3-15* X 2 X 3 X 3 X ...
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Goodmans DSZ - page 24
ACCESSORIES 24 ELECTRIC HEA T KIT APPLICA TIONS - ASPF ELECTRIC HEA T KIT APPLICA TIONS - AEPF A E P F1 830 16 A E PF 303 61 6 A E PF3 137 16 A EPF 42 601 6 HKR-0 5 *, HKR -0 5 C * X X HRK-0 8 *, HKR -0 8 C X X X HKR-1 0 *, HKR -1 0 C X 1 XX X H K R -15C * X 1 X 1 X H K R -20C * X 2 H K R -21C X 2 * R e v i s i on l eve l t h at m ay or ma y no t b ...
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Goodmans DSZ - page 25
PRODUCT DESIGN 25 This section gives a basic description of cooling unit opera- tion, its various components and their basic operation. Ensure your system is properly sized for heat gain and loss according to methods of the Air Conditioning Contractors Association (ACCA) or equivalent. CONDENSING UNIT The condenser air is pulled through the condens ...
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Goodmans DSZ - page 26
PRODUCT DESIGN 26 The ASX [16 & 18], ASZ [16 & 18], DSX16 and DSZ16 series split system units use a two-stage scroll compressor. The two-step modulator has an internal unloading mechanism that opens a bypass port in the first compression pocket, effectively reducing the displacement of the scroll. The opening and closing of the bypass port ...
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Goodmans DSZ - page 27
PRODUCT DESIGN 27 CAPACITY CONTROL During the compression process, there are several pockets within the scroll that are compressing gas. Modulation is achieved by venting a portion of the gas in the first suction pocket back to the low side of the compressor thereby reducing the effective displacement of the compressor. See Figure A. Full capacity ...
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Goodmans DSZ - page 28
SYSTEM OPERA TION 28 COOLING The refrigerant used in the system is R-410A. It is a clear, colorless, non-toxic and non-irritating liquid. R-410A is a 50:50 blend of R-32 and R-125. The boiling point at atmo- spheric pressure is -62.9°F. A few of the important principles that make the refrigeration cycle possible are: heat always flows from a warme ...
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Goodmans DSZ - page 29
SYSTEM OPERA TION 29 DEFROST CYCLE The defrosting of the outdoor coil is jointly controlled by the defrost control board and the defrost thermostat. Solid State Defrost Control During operation the power to the circuit board is controlled by a temperature sensor, which is clamped to a feeder tube entering the outdoor coil. Defrost timing periods of ...
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Goodmans DSZ - page 30
SYSTEM OPERA TION 30 COOLING CYCLE HEATING CYCLE Indoor Coil Accumulator Bi-Flow Fi lt er Dr y er Outdoor Coil Thermostatic Exp a nsi on Valve Chec k Val ve Reversing Valv e (De -Ener gized) Indoor Coil Accumulator Bi-Flow Fi lt er Dr y er Outdoor Coil Thermostatic Exp a nsi on Valve Chec k Val ve Reversing Valv e (Energized) ...
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Goodmans DSZ - page 31
SYSTEM OPERA TION 31 RESTRICTOR ORIFICE ASSEMBLY IN COOLING OPERATION RESTRICTOR ORIFICE ASSEMBLY IN HEATING OPERATION In the cooling mode, the orifice is pushed into its seat, forcing refrigerant to flow through the metered hole in the center of the orifice. In the heating mode, the orifice moves back off its seat, allowing refrigerant to flow unm ...
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Goodmans DSZ - page 32
SYSTEM OPERA TION 32 AFE18-60A CONTROL BOARD DESCRIPTION The AFE18 control is designed for use in heat pump applica- tions where the indoor coil is located above/downstream of a gas or fossil fuel furnace. It will operate with single and two stage heat pumps and single and two stage furnaces. The AFE18 control will turn the heat pump unit off when ...
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Goodmans DSZ - page 33
33 TROUBLESHOOTING CHART Co m p lain t S y st em Op e r a t i n g P ressu res PO SSI B LE C A U SE DO TS IN AN ALY SIS GUID E IN DIC ATE "PO SS IBL E CAUSE" SYMPTOM System will not start Compressor will not sta r t - fan runs Comp. and Cond. F an will not start Evaporator fan will not start Condenser fan w ill not start Compressor runs - ...
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Goodmans DSZ - page 34
SERVICING 34 HIGH V OL T AGE! Dis co nnect ALL power b ef ore ser vici ng or ins t allin g. Mult iple p ow er sour ces m ay be pre sen t. Fa ilu re to do so ma y cau se pr opert y d amag e, pers ona l i nj ur y or deat h . S - 1 Checking Voltage .......................................... 3 5 S - 2 Checking Wiring ................................... ...
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Goodmans DSZ - page 35
SERVICING 35 S-1 CHECKING VOLTAGE 1. Remove outer case, control panel cover, etc., from unit being tested. With power ON: WA RN I NG Line Vol tag e now p resent. 2. Using a voltmeter, measure the voltage across terminals L1 and L2 of the contactor for the condensing unit or at the field connections for the air handler or heaters. 3. No reading - in ...
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Goodmans DSZ - page 36
SERVICING 36 4. Check the continuity of the thermostat and wiring. Repair or replace as necessary. Resistance Heaters 1. Set room thermostat to a higher setting than room temperature so both stages call for heat. 2. With voltmeter, check for 24 volts at each heater relay. Note: BBA/BBC heater relays are DC voltage. 3. No voltage indicates the troub ...
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Goodmans DSZ - page 37
SERVICING 37 S-4 CHECKING TRANSFORMER AND CONTROL CIRCUIT HIGH VOL T AG E! Disconne ct AL L p ower b efore servi cing or in st al li ng . M ul tip le po wer s ou r ces may be pr esent. F ailur e to do so m ay cause p roperty da mage, p ersonal i njury or d ea th . A step-down transformer (208/240 volt primary to 24 volt sec- ondary) is provided wit ...
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Goodmans DSZ - page 38
SERVICING 38 S-7 CHECKING CONTACTOR AND/OR RELAYS HIGH VOL T AG E! Disconne ct AL L p ower b efore servi cing or in st al li ng . M ul tip le po wer s ou r ces may be pr esent. F ailur e to do so m ay cause p roperty da mage, p ersonal i njury or d ea th . The compressor contactor and other relay holding coils are wired into the low or line voltage ...
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Goodmans DSZ - page 39
SERVICING 39 WA R N I NG Li ne Vo l t ag e now p r ese nt . 1 2 3 4 5 OHMM ETER TESTING FAN RELAY 4. Using an ohmmeter, test between 2 and 4 - should read continuous . Test between 5 and 6 - should read open. 5. If not as above, replace the relay. S-10 COPELAND COMFORT ALERT™ DIAGNOSTICS Applies to ASX /ASZ and DSX/DSZ units Comfort Alert™ is s ...
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Goodmans DSZ - page 40
SERVICING 40 Status LED Status LED De scripti on Status LED Tr oubleshooting Information Green “P O W ER” Module has power Su pply voltag e is pre se nt at m odu le t erm i nals Red “TRIP” Th erm o sta t de m and s ignal 1. Co m pres sor pr otec tor is open Y1 is pre s en t, bu t the 2. Outd oor un it power d is co nn ec t is o pen co m p r ...
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Goodmans DSZ - page 41
SERVICING 41 S-11 CHECKING LOSS OF CHARGE PROTECTOR (Heat Pump Models) The loss of charge protector senses the pressure in the liquid line and will open its contacts on a drop in pressure. The low pressure control will automatically reset itself with a rise in pressure. The low pressure control is designed to cut-out (open) at approximately 21 PSIG ...
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Goodmans DSZ - page 42
SERVICING 42 The discharge check valve closes off high side pressure to the compressor after shut down allowing equalization through the scroll flanks. Equalization requires only about ½ second. To prevent the compressor from short cycling, a Time Delay Relay (Cycle Protector) has been added to the low voltage circuit. RELAY, START A potential or ...
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Goodmans DSZ - page 43
SERVICING 43 S-16A CHECKING FAN AND BLOWER MOTOR WINDINGS (PSC MOTORS) The auto reset fan motor overload is designed to protect the motor against high temperature and high amperage condi- tions by breaking the common circuit within the motor, similar to the compressor internal overload. However, heat gener- ated within the motor is faster to dissip ...
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Goodmans DSZ - page 44
SERVICING 44 - Conn ec t ors a re orien ted "d ow n" ( or as recom m end ed b y equi pm ent m anu fact urer ) .- A r r a n g e harnes s es wit h " dr i p loop " und er mo t or . - I s con d ensa t e d ra i n p l u gg e d? - Ch ec k f or l ow a i r fl ow (t oo muc h l a t en t capac ity ) . - Check for underc harge d conditio n . ...
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Goodmans DSZ - page 45
SERVICING 45 - Conn ector s are o rient ed "do wn" ( or as r ecom mende d b y equip me nt m anufact urer ) .- A r r a n g e harn esses with " drip loop " unde r m otor. - I s con d ensa t e d ra i n p l u gg e d? - Ch ec k f or l ow a i r fl ow (t oo muc h l a t en t capac ity ) . - Check for underch arged cond iti on . - Check ...
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Goodmans DSZ - page 46
SERVICING 46 S-16C CHECKING ECM MOTOR WINDINGS HIGH V OL T AGE ! Disco nne ct AL L pow er b efore servici ng or in sta l li ng . Mu l tip l e po wer s ou rc es may be p resent. F ailu re to do so may cause p roperty d amage, perso nal i njury or d ea th . 1. Disconnect the 5-pin and the 16-pin connectors from the ECM power head. 2. Remove the 2 scr ...
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Goodmans DSZ - page 47
SERVICING 47 Mo de l Swi t ch 5 S w i tch 6 CF M OFF OFF 1,200 ON OFF 1,000 OFF ON 800 ON ON 600 OFF OFF 1,600 ON OFF 1,400 OFF ON 1,200 ON ON 1,000 OFF OFF 2,000 ON OFF 1,800 OFF ON 1,600 ON ON 1,200 MBE1200 MBE1600 MBE2000 Coolin g/H eat Pum p Operat ion Table 3 THERMOST A T “FAN ONL Y” MODE During Fan Only Operations, the CFM output is 30% o ...
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Goodmans DSZ - page 48
SERVICING 48 S-16F CHECKING GE X13 TM MOTORS The GE X13 TM Motor is a one piece, fully encapsulated, 3 phase brushless DC (single phase AC input) motor with ball bearing construction. Unlike the ECM 2.3/2.5 motors, the GE X13 TM features an integral control module. Note: The GE TECMate will not currently operate the GE X13 TM motor. 1. Using a volt ...
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Goodmans DSZ - page 49
SERVICING 49 S-17 CHECKING COMPRESSOR WARNIN G Herm eti c co mpress o r el ectri cal term i nal ve nt ing ca n be dangerous . When insulating mat erial whic h supp o rts a her metic compres sor or electrical t erminal su dde nly di sin te grat es du e to phy sic al ab use or a s a resu lt o f an el ect ri cal shor t betw een the ter m inal an d the ...
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Goodmans DSZ - page 50
SERVICING 50 Do not use a low voltage output instrument such as a volt- ohmmeter. HI-POT COMPRESSOR GROUND TEST 3. If a ground is indicated, then carefully remove the com- pressor terminal protective cover and inspect for loose leads or insulation breaks in the lead wires. 4. If no visual problems indicated, carefully remove the leads at the compre ...
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Goodmans DSZ - page 51
SERVICING 51 3. Connect good capacitors of the right MFD and voltage rating into the circuit as shown. 4. With power ON, close the switch. WA RN I NG Li ne Volt ag e now pres ent. A . If the compressor starts and continues to run, the cause for failure is somewhere else in the system. B. If the compressor fails to start - replace. COPEL AND COMPR E ...
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Goodmans DSZ - page 52
SERVICING 52 3. Check the temperature at which the control opens its contacts by raising the temperature of the control. Part # 0130M00009P which is used on 2 and 2.5 ton units should open at 60°F ± 5°F. Part # 0130M00001P which is used on 3 thru 5 ton units should open at 75°F ± 6°F. 4. If not as above, replace control. S-26 CHECKING HEATER ...
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Goodmans DSZ - page 53
SERVICING 53 1.4 The compressor and condenser fan are turned off and after a 65 second delay off, the relay on the EBTDR board is de-energized and the blower is turned off. 2.0 Heating Operation 2.1 On a demand for heat, the room thermostat energizes “W1” and 24Vac is supplied to heat sequencer, HR1, on the heater assembly. 2.2 The contacts M1 ...
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Goodmans DSZ - page 54
SERVICING 54 4.5 When the first stage heat demand “Y” is satisfied, the room thermostat will remove the 24Vac from “G” and “Y”. The heat pump is turned off and the blower motor turns off after a 65 second off delay. 5.0 Defrost Operation On heat pump units, when the room thermostat is set to the heating mode, the reversing valve is not ...
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Goodmans DSZ - page 55
SERVICING 55 remove the 24Vac from HR2. The contacts on HR2 will open between 30 to 70 seconds and heater elements #3 and #4 will be turned off and the blower motor will change to low speed. On most digital/electronic thermostats, “W2” will re- main energized until the first stage demand “W1” is satisfied and then the “W1” and “W2” ...
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Goodmans DSZ - page 56
SERVICING 56 5.0 DEFROST OPERA TION On heat pump units, when the room thermostat is set to the heating mode, the reversing valve is not energized. As long as the thermostat is set for heating, the reversing valve will be in the de-energized position for heating except during a defrost cycle. 5.1 The heat pump will be on and operating in the heating ...
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Goodmans DSZ - page 57
SERVICING 57 For the 3 rd and 4 th heater elements to operate on a second stage heat demand, the PJ4 jumper on the VSTB inside the MBE/AEPF must be cut. With the PJ4 jumper cut, the VSTB will run the blower motor on low speed on a “W1” only demand. If the first stage heat demand, “W1” cannot be satisfied by the heat pump, the temperature in ...
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Goodmans DSZ - page 58
SERVICING 58 The outdoor fan will change to high speed operation. If the “Y2” demand is present and becomes satisfied, the thermostat will remove the “Y2” demand and the VSTB will remove the 24Vac from “Y/Y2” at the heat pump. The blower will drop to 60% of the programmed cfm and the outdoor fan will change to low speed. On most digital ...
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Goodmans DSZ - page 59
SERVICING 59 Alternately, the system CFM can be determined by operating the electric heaters and indoor blower WITHOUT having the compressor in operation. Measure the temperature rise as close to the blower inlet and outlet as possible. If other than a 240V power supply is used, refer to the BTUH CAPACITY CORRECTION FACTOR chart below. BTUH CAPACIT ...
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Goodmans DSZ - page 60
SERVICING 60 2. Using an ohmmeter, test across the fuse link for continu- ity - no reading indicates the link is open. Replace as necessary. NOTE: The link is designed to open at approximately 333°F. DO NOT WIRE AROUND - determine reason for failure. S-62 CHECKING HEATER ELEMENTS WARN I NG Di sconnect ALL p ower befor e servi c i ng. 1. Disassembl ...
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Goodmans DSZ - page 61
SERVICING 61 IMPORTANT NOTE: Because of the potential damage to compressors, do not allow suction pressure at service valve to drop below 20 PSIG when pumping unit system down for repair. Outdoor section, depending on line set length and amount of charge in system, may not be able to hold the entire system charge. This is the most important part of ...
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Goodmans DSZ - page 62
SERVICING 62 CAUT ION Us e refrige rant cert if ied to AHRI s tanda rds. Use d ref ri ger a nt ma y caus e comp res so r dama ge an d will void the wa rranty . Mos t po rtab le ma chines c annot clea n use d refri ge rant t o meet AHRI standards . CA UT ION Operati ng the compressor wi t h the sucti on val ve cl osed will void t he warr anty and ca ...
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Goodmans DSZ - page 63
SERVICING 63 Re m ote C onde n s er O rif ic e Si ze Re mo te Hea t P u m p Or ific e Si z e A/ G S X 1 3 0 1 8 1 A 0. 04 9 A / G S Z 13 018 1 0 . 049 A / G S X1 301 81B 0. 05 1 A / G S Z 13 024 1 0 . 057 A/ G S X 1 3 0 2 4 1 A 0. 05 3 A / G S Z 13 030 1 0 . 063 A / G S X1 302 41B 0. 05 7 A / G S Z 13 036 1 0 . 068 A / G S X 130 301 0. 05 9 A / G S ...
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Goodmans DSZ - page 64
SERVICING 64 PSIG °F PSIG °F PSIG ° F PS IG °F PSIG °F PSIG ° F 12 -37.7 114.0 37 .8 216.0 74.3 318.0 100.2 420.0 120. 7 522.0 137 .6 14 -34.7 116.0 38 .7 218.0 74.9 320.0 100.7 422.0 121. 0 524.0 137 .9 16 -32.0 118.0 39 .5 220.0 75.5 322.0 101.1 424.0 121. 4 526.0 138 .3 18 -29.4 120.0 40 .5 222.0 76.1 324.0 101.6 426.0 121. 7 528.0 138 .6 ...
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Goodmans DSZ - page 65
SERVICING 65 LIQUID PR ESSURE AT SERVIC E VALVE (PSIG) 8 10 12 14 16 18 189 58 56 54 52 50 48 195 60 58 56 54 52 50 202 62 60 58 56 54 52 208 64 62 60 58 56 54 215 66 64 62 60 58 56 222 68 66 64 62 60 58 229 70 68 66 64 62 60 236 72 70 68 66 64 62 243 74 72 70 68 66 64 251 76 74 72 70 68 66 259 78 76 74 72 70 68 266 80 78 76 74 72 70 274 82 80 78 7 ...
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Goodmans DSZ - page 66
SERVICING 66 S-106 OVERFEEDING Overfeeding by the expansion valve results in high suction pressure, cold suction line, and possible liquid slugging of the compressor. If these symptoms are observed: 1. Check for an overcharged unit by referring to the cooling performance charts in the servicing section. 2. Check the operation of the power element i ...
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Goodmans DSZ - page 67
SERVICING 67 4. Review the technical information manual or specification sheet for the model being serviced to obtain the design subcooling. 5. Compare the hi-pressure reading to the "Required Liquid Line Temperature" chart (page 43). Find the hi-pressure value on the left column. Follow that line right to the column under the design subc ...
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Goodmans DSZ - page 68
SERVICING 68 2. Remove the orifice or tube strainer assembly and re- place. 3. Replace liquid line drier, evacuate and recharge. CHECKING EQUALIZATION TIME During the "OFF" cycle, the high side pressure bleeds to the low side through the fixed orifice restriction device. Check equalization time as follows: 1. Attach a gauge manifold to th ...
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Goodmans DSZ - page 69
SERVICING 69 NOTE: At least twelve (12) inches of the suction line immediately out of the compressor stub must be discarded due to burned residue and contaminates. 1. Remove compressor discharge line strainer. 2. Remove the liquid line drier and expansion valve. 3 Purge all remaining components with dry nitrogen or carbon dioxide until clean. 4. In ...
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Goodmans DSZ - page 70
SERVICING 70 4. Two-Stage Condensing Unit: The maximum length of tubing must not exceed 80 feet where indoor coil is located above the outdoor unit. NOTE: When the outdoor unit is located above the indoor coil, the maximum vertical rise must not exceed 25 feet. If the maximum vertical rise exceeds 25 feet, premature compressor failure will occur du ...
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Goodmans DSZ - page 71
SERVICING 71 Mounting th e cond en sing unit abo ve the evapor a tor coil w ill require oil traps at equa l intervals a long th e suction line. Insta ll 1 oil trap fo r a h eig ht di ffer ence of 15 -25 f eet bet we en ind oo r an d outd oor u nit s. In stall 2 oil traps f or a dif ference of 2 6-50 f eet, 3 for 51-100 feet, and 4 for 101-15 0 feet ...
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Goodmans DSZ - page 72
SERVICING 72 3. Add the two readings together. TOTAL EXTERNAL STATIC NOTE: Both readings may be taken simultaneously and read directly on the manometer if so desired. 4. Consult proper table for quantity of air. If external static pressure is being measured on a furnace to determine airflow, supply static must be taken between the "A" coi ...
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Goodmans DSZ - page 73
ACCESSORIES WIRING DIAGRAMS 73 HIGH VOL T A GE! DISCONNECT ALL POWER BEFORE SERVICI NG OR INST A LLING THIS UNIT . MUL T IPLE POW ER SOUR CES M A Y BE P RESENT . F AILURE TO DO SO MA Y CAUS E PROP ERTY DAMAG E, PERSO NAL INJURY OR DEA TH . +5 VDC 24 VA C G POW ER S UPP LY INPUT POW ER S UPP LY C OM MO N OUT TO HP CONTROL P3 -1 6. 8K P3 -7 Y- HP P1 ...
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Goodmans DSZ - page 74
74 ACCESSORIES WIRING DIAGRAMS HI GH VO L T AGE! DISC ONNECT ALL POWE R BEFORE SERVICI NG O R INS T A LLIN G THIS UNIT . MUL TIPL E POW ER SOUR CES MA Y BE P RESENT . F A ILURE TO DO SO MA Y CAUS E PROP ERTY DAMAG E, PERSONAL INJURY OR DEA TH . EMERG ENCY HEAT RELAY 13 42 BLUE WHITE BLACK BROWN THERMOSTAT OT/E HR18- 60 2 1 From Air Handler CG W 2 R ...
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Goodmans DSZ - page 75
ACCESSORIES WIRING DIAGRAMS 75 HIGH VOL T A GE! DISCONNECT ALL POWER BEFORE SERVICI NG OR INST A LLING THIS UNIT . MUL T IPLE POW ER SOUR CES M A Y BE P RESENT . F AILURE TO DO SO MA Y CAUS E PROP ERTY DAMAG E, PERSO NAL INJURY OR DEA TH . EMER GENCY HE AT RELAY 13 42 BLUE WHITE BLACK BROW N THERM OSTAT OT/EHR18-60 #2 2 1 From Air Handler CG W 2 R ...
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Goodmans DSZ - page 76
76 ACCESSORIES WIRING DIAGRAMS HI GH VO L T AGE! DISC ONNECT ALL POWE R BEFORE SERVICI NG O R INS T A LLIN G THIS UNIT . MUL TIPL E POW ER SOUR CES MA Y BE P RESENT . F A ILURE TO DO SO MA Y CAUS E PROP ERTY DAMAG E, PERSONAL INJURY OR DEA TH . BK BL BK L1 L2 BK BK HT R1 TL HTR2 RD 9 8 7 R WH BL PU TL BK 5 6 3 4 BK RD 1 2 WH BK L2 L1 BK RD RD RD BK ...
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Goodmans DSZ - page 77
ACCESSORIES WIRING DIAGRAMS 77 HIGH VOL T A GE! DISCONNECT ALL POWER BEFORE SERVICI NG OR INST A LLING THIS UNIT . MUL T IPLE POW ER SOUR CES M A Y BE P RESENT . F AILURE TO DO SO MA Y CAUS E PROP ERTY DAMAG E, PERSO NAL INJURY OR DEA TH . CO M XF MR -C XF MR -R SPE ED U P C NC M1 K1 R G NO K1 USE C OPP ER O R ALUMIN U M WI R E EQUI PMENT GR O UND ...
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Goodmans DSZ - page 78
78 ACCESSORIES WIRING DIAGRAMS HI GH VO L T AGE! DISC ONNECT ALL POWE R BEFORE SERVICI NG O R INS T A LLIN G THIS UNIT . MUL TIPL E POW ER SOUR CES MA Y BE P RESENT . F A ILURE TO DO SO MA Y CAUS E PROP ERTY DAMAG E, PERSONAL INJURY OR DEA TH . N O M A R K IN DI CA TES N O H EA T KI T IN STA LL E D A F TE R INS T ALLI N G OPT ION AL H EA T K IT , M ...
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Goodmans DSZ - page 79
ACCESSORIES WIRING DIAGRAMS 79 HIGH VOL T A GE! DISCONNECT ALL POWER BEFORE SERVICI NG OR INST A LLING THIS UNIT . MUL T IPLE POW ER SOUR CES M A Y BE P RESENT . F AILURE TO DO SO MA Y CAUS E PROP ERTY DAMAG E, PERSO NAL INJURY OR DEA TH . Blowe r Sect ion BK VS TB DS1 PN. B 1368 270 REV. A J1 THERM OSTATS W2 HEAT ER W CR J3 J2 BR R BL Y/Y2 24 V A ...
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Goodmans DSZ - page 80
80 ACCESSORIES WIRING DIAGRAMS HI GH VO L T AGE! DISC ONNECT ALL POWE R BEFORE SERVICI NG O R INS T A LLIN G THIS UNIT . MUL TIPL E POW ER SOUR CES MA Y BE P RESENT . F A ILURE TO DO SO MA Y CAUS E PROP ERTY DAMAG E, PERSONAL INJURY OR DEA TH . Typical Wiring Schematic ASPF with Electric Heat. This wiring diagram is for reference only. Not all wiri ...
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