Trane A4HP5018D1000A Installer'S Manual Download Page 27

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88-A4HP5001-1B-EN

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

R S

PLY

HIG

H V

OLT

E W

IRIN

N C

APA

CIT

STA

PAC

ITO

STA

LAY

NTA

CTO

R C

TAC

W V

OLT

E W

IRIN

L T

STA

NTA

CTO

R C

OIL

W V

OLT

E F

STU

INE

FFIC

IEN

T C

F. U

F. O

IVE

AP.

LES

S. O

.D.

AIR

FLO

O.D

. A

CIR

LAT

ION

V/E

K O

EAT

S. I

.D.

AIR

FLO

F. C

IR.

STR

ICT

ION

V L

KIN

V C

OIL

EFE

IVE

K V

ALV

E L

KIN

T R

ELA

Y D

EF.

T C

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

Summary of Contents for A4HP5018D1000A

Page 1: ...ng Improperly installed adjusted or altered equipment by an unqualified person could result in death or serious injury When working on the equipment observe all pre cautions in the literature and on t...

Page 2: ...um with air and always change the driers when opening the system for component replacement For specific handling concerns with R 410A and POE oil reference Retrofit Bulletins SS APG006 EN and APP APG0...

Page 3: ...ction 6 Refrigerant Line Routing 9 Section 7 Refrigerant Line Brazing 10 Section 8 Refrigerant Line Leak Check 12 Section 9 Evacuation 13 Section 10 Service Valves 13 Section 11 Electrical Low Voltage...

Page 4: ...6 X 29 8 X 29 8 162 A4HP5024D 32 6 X 29 8 X 29 8 162 A4HP5030D 28 6 X 29 8 X 29 8 159 A4HP5036D 36 6 X 34 3 X 34 3 199 A4HP5042D 44 6 X 34 3 X 34 3 227 A4HP5048D 44 6 X 34 3 X 34 3 250 A4HP5060D 44 6...

Page 5: ...h of refrigerant lines from outdoor to indoor unit should NOT exceed 150 feet including lift 2 The maximum vertical change should not exceed 50 feet 3 Service valve connection diameters are shown in T...

Page 6: ...n areas where snow accumulation and prolonged below freezing temperatures occur Units should be elevated 3 12 inches above the pad or roof top depending on local weather This additional height will al...

Page 7: ...Setting the Unit 4 1 Pad Installation When installing the unit on a support pad such as a concrete slab consider the following The pad should be at least 1 larger than the unit on all sides The pad mu...

Page 8: ...4 Total Line Length __________ Ft Total Vertical Change lift __________ Ft The outdoor condensing units are factory charged with the system charge required for the outdoor condensing unit ten 10 feet...

Page 9: ...from the refrigerant lines For Example When the refrigerant lines have to be fastened to floor joists or other framing in a structure use isolation type hangers Isolation hangers should also be used w...

Page 10: ...ire 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...

Page 11: ...the service valves Continue the dry nitrogen purge Do not remove the wet rag until all brazing is completed Important Remove the wet rag before stopping the dry nitrogen purge Note Install drier in L...

Page 12: ...P 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 L...

Page 13: ...lete 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 COU...

Page 14: ...lve 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 touche...

Page 15: ...rnace Furnace Outdoor Unit R G B W1 W2 B Y R G B C W1 W2 24 VAC HOT FAN 24 VAC Common COOL HEATING Y Y1 Y Y YLO Thermostat Outdoor Unit R G B W1 W2 B R G B C Y1 W1 W2 24 VAC HOT FAN 24 VAC Common COOL...

Page 16: ...EN AUX 1 AUX 1 AUX 2 AUX 2 RC RH B C O Y1 Y2 G BK W1 ODT W2 W3 ODT RS1 RS1 R B C O Y1 YIo Y Y2 G BK W1 W2 AUX 1 AUX 2 24VAC HOT COMMON SOV COOLING FAN HEATING ODT RS B Y INDOOR UNIT OUTDOOR UNIT 2 Sta...

Page 17: ...of operation 2 FRC_DFT Forced Defrost Short TEST_ COMMON to this pin for two 2 seconds to initiate a forced defrost Remove the short after defrost initiates Defrost Control Checkout Normal operation r...

Page 18: ...High 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...

Page 19: ...t 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 i...

Page 20: ...d lift measurements from Section 5 3 Total Line Length __________ Ft Vertical Change Lift __________ Ft Note Use this method when matched with a TXV or EEV indoor unit Section 14 System Charge Adjustm...

Page 21: ...RISE Add 2 REFRIGERANT LINE LIFT FT 50 1 40 30 25 Use Design Subcooling 15 1 10 0 20 30 40 50 60 70 80 90 100 110 120 130 140 150 Add 1 REFRIGERANT LINE LIFT FT SUBCOOL CHARGING CHART CORRECTIONS TAB...

Page 22: ...ressure should be ap proximately 327 PSIG 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...

Page 23: ...gree F SUCTION PRESSURE PSIG OUTDOOR TEMPERATURE Degree F COOLING PERFORMANCE CAN BE CHECKED WHEN THE OUTDOOR TEMP IS ABOVE 65 DEG F TO CHECK COOLING PERFORMANCE SELECT THE PROPER INDOOR CFM ALLOW PRE...

Page 24: ...25 27 28 30 31 95 4 6 8 10 13 14 16 18 20 22 23 25 26 28 29 100 6 8 10 12 13 16 18 20 21 23 25 27 29 105 4 6 7 9 11 13 15 18 20 22 24 26 28 110 4 7 9 11 13 16 18 21 23 26 28 115 6 9 12 14 16 19 21 24...

Page 25: ...____ F Liquid Gage Pressure __________ PSIG Suction Gage Pressure __________ PSIG Calculating Charge Using the Weigh In Method STEP 1 Measure in feet the distance between the outdoor unit and the indo...

Page 26: ...to direct contact with copper tubing 5 Verify that all electrical connections are tight 6 Observe outdoor fan during on cycle for clearance and smooth operation Section 15 Checkout Procedures and Trou...

Page 27: ...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 C O M P R E S S O R I N E F F I C I E N T C O M P R E F U N D E R C H A R G E R E F O V E R C H A R G E E X C E S S I V E E V A P L O A D N O N...

Page 28: ...r com The AHRI Certified mark indicates company participation in the AHRI Certification program For verification of individual certified products go to ahridirectory org The manufacturer has a policy...

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