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18-AC79D1-6-EN

The manufacturer has a policy of continuous product and product data improvement
and it reserves the right to change design and specifications without notice.
Representative-only illustrations included in this document.

12/14

6200 Troup Highway
Tyler, TX 75707
www.trane.com

SYSTEM FAULTS

REFRIGERANT CIRCUIT

Head Pressure Too High

Head Pressure Too Low

Suction Pressure Too High

Suction Pressure Too Low

Liquid Refrig. Floodback (TXV/EEV)

Liquid Refrig. Floodback

(Cap. Tube)

I.D. Coil Frosting

Compressor Runs

Inadequate or No Cooling/Htg
ELECTRICAL
Compressor & O.D. Fan

Won’t Start
Compressor Will Not Start

But O.D. Fan Runs

O.D. Fan Won’t Start

Compressor Hums But Won’t Start

Compressor Cycles on IOL

I.D. Blower Won’t Start

DEFROST

Unit Won’t Initiate Defrost

Defrost Terminates on Time

Unit Icing Up

T T

K M

PLY

HIG

H V

OLT

E W

IRIN

N C

APA

CIT

STA

APA

CIT

STA

NTA

TAC

LTA

IRIN

L T

STA

NTA

OIL

LTA

K C

INE

ICIE

F. U

F. O

IVE

P. L

O.D

. A

IRF

O.D

. A

CIR

LAT

V/E

EAT

I.D

. A

IRF

F. C

IR.

RIC

TIO

V L

KIN

V C

OIL

TIV

K V

ALV

E L

KIN

T R

EF.

T C

EF.

C
H
C
H
C
H
C
H
C
H
C
H
C
H
C
H

C
H
C
H
C
H
C
H
C
H
C
H

C
H
C
H
C
H

P
P

P
P
P
P
P
P

P
P
P
P

S
S

S
S
S
S

S
S

S
S
S
S

S
S
S
S
S
S
S
S

S
S

P
P

S
S

P
P

S
S

P
P

P
P
P
P

P
P
P
P
P
P
P
P

S
S
S
S

S
S

P
P

S
S

S
S
S

S
S

S
S
S

S
S

P
P

S
S
S
S
S
S

S
S

P
P

S
S
S
S

S
S

S
S
P
P

S
S

P
P
P

P
P

S
S

P P

C - Cooling H - Heating P - Primary Causes S - Secondary Causes

- 3 Phase Only

15.2 Troubleshooting

Содержание 4TTR3018-060

Страница 1: ...roved matched indoor and outdoor systems All of the manufacture s split systems are A H R I rated only with TXV EEV indoor systems Some of the benefits of installing approved matched indoor and outdoo...

Страница 2: ...ponent replacement For specific handling concerns with R 410A and POE oil reference Retrofit Bulletins SS APG006 EN and APP APG011 EN or APP APG012 EN Extreme caution should be exercised when opening...

Страница 3: ...outdoor to indoor unit should NOT exceed sixty 60 feet 2 The maximum vertical change should not exceed sixty 60 feet 3 Service valve connection diameters are shown in Table 5 1 Note For line lengths...

Страница 4: ...from any structure to prevent excess roof runoff water from pouring directly on the unit STEP 2 To remove the unit from the pallet remove tabs by cutting with a sharp tool Section 3 Unit Preparation...

Страница 5: ...8 4TTR3036G 3 4 3 8 3 4 3 8 4TTR3042D 3 4 3 8 3 4 3 8 4TTR3048D 7 8 3 8 7 8 3 8 4TTR3060D 7 8 3 8 7 8 3 8 Section 5 Refrigerant Line Considerations 5 1 Refrigerant Line and Service Valve Connection Si...

Страница 6: ...ly with National State and Local Codes when isolating line sets from joists rafters walls or other structural elements Isolation From Joist Rafter Side View 8 Feet Maximum Secure Vapor line from joist...

Страница 7: ...or other appropriate method every 8 ft 8 Feet Maximum Isolation Through Wall DO NOT hang line sets from ductwork Sealant Insulation Vapor Line Wall Ductwork Isolator Line Set Section 7 Refrigerant Li...

Страница 8: ...avoid heat damage and continue the dry nitrogen purge Braze the refrigerant lines to the service valves Continue the dry nitrogen purge Do not re move the wet rag until all brazing is completed Impor...

Страница 9: ...2 Check for leaks by using a soapy solu tion or bubbles at each brazed location Remove nitrogren pressure and repair any leaks before continuing Section 8 Refrigerant Line Leak Check 8 1 Check For Lea...

Страница 10: ...te blank off the vacuum pump and micron gauge and close the valves on the manifold gauge set 1 MIN Section 10 Service Valves 10 1 Open the Gas Service Valve 0350 Microns ON OFF CAP 1 4 TURN ONLY COUNT...

Страница 11: ...ve System Service Port 3 16 Hex Wrench Unit Side of Service Valve Extreme caution should be exercised when opening the Liquid Line Service Valve Turn counterclockwise until the valve stem just touches...

Страница 12: ...per W1 and W2 together if comfort control has only one stage of heat Y for TEM3 and TEM4 Only applies for TEM6 Thermostat Air Handler Outdoor Unit R G B W1 W2 B Y R G B C Y W1 W2 Blue 24 VAC HOT FAN 2...

Страница 13: ...h Voltage Ground Ground the outdoor unit per national state and local code requirements LIVE ELECTRICAL COMPONENTS During installation testing servicing and troubleshooting of this product it may be n...

Страница 14: ...s to apply power to the indoor and outdoor units STEP 5 Set system thermostat to ON OFF DONE CANCEL ON OFF STEP 4 Wait one 1 hour before starting the unit if compressor crankcase heater acces sory is...

Страница 15: ...to return in the spring or summer to accurately charge the system in the cooling mode when outdoor ambient tempera ture is above 55 F STEP 1 Use the refrigerant line total length and lift measurement...

Страница 16: ...LINE LENGTH FEET REFRIGERANT LINE LIFT FEET 10 20 25 30 40 60 Add 4 of Subcooling Add 3 of Subcooling Add 2 of Subcooling Add 1 of Subcooling Use Design Subcool Value 60 50 40 30 25 20 15 10 0 SUBCOOL...

Страница 17: ...ssure should be ap proximately 327 PSI This is the shown as the intersection of the Final Subcooling column and the Liquid Temperature row Table 14 2 8 9 10 11 12 13 14 179 182 185 188 191 195 198 195...

Страница 18: ...OR 4TTR3036D1000A 4TXCB036BC3 Cooling with Thermal Expansion Valve LIQUID PRESSURE PSIG OUTDOOR TEMPERATURE Degree F SUCTION PRESSURE PSIG OUTDOOR TEMPERATURE Degree F COOLING PERFORMANCE CAN BE CHECK...

Страница 19: ...heckout Procedures and Troubleshooting 15 1 Operational And Checkout Procedures CHECKOUT PROCEDURE After installation has been completed it is recommended that the entire system be checked against the...

Страница 20: ...R T R E L A Y C O N T A C T O R C O N T A C T S L O W V O L T A G E W I R I N G C O N T R O L T R A N S F O R M E R T H E R M O S T A T C O N T A C T O R C O I L L O W V O L T A G E F U S E S T U C K...

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