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Trane
A business of
American Standard Companies
www.trane.com

P.I.

04/05

Trane has a policy of continuous product and product data improvement and it reserves the right to change
design and specifications without notice.

Installer’s Guide

CHECKOUT PROCEDURE

After installation has been completed, it is recommended that the entire system be checked against the following list:

1. Refrigerant Line, Leak checked .................................. [

]

2. Suction Lines and Fittings properly insulated ........... [

]

3. Have all Refrigerant Lines been secured and

isolated properly? ........................................................ [

]

4. Have passages through masonry been sealed?

If mortar is used, prevent mortar from coming
into direct contact with copper tubing ........................ [

]

5. Verify tightness of all electrical connects ................... [

]

6. Observe outdoor fan during on cycle for clearance

and smooth operation .................................................. [

]

7. Indoor coil drain line drains freely. Pour water

into drain pan .............................................................. [

]

8. Supply registers and return grilles open and

unobstructed ................................................................ [

]

9. Return air filter installed ............................................ [

]

10. Thermostat thermometer is accurate. Check

against a reliable thermometer. Adjust per
instructions with thermostat ...................................... [

]

11. Is correct speed tap being used?

(Indoor blower motor) .................................................. [

]

12. Operate complete system in each mode to

insure safe operation. .................................................. [

]

SYSTEM FAULTS

REFRIGERANT CIRCUIT

Head Pressure Too High

Head Pressure Too Low

Suction Pressure Too High

Suction Pressure Too Low

Liquid Refrig. Floodback (TXV)

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

WHA

TO

 CHECK MODE

PO

WER SUPPL

Y

HIGH V

O

LTA

G

WIRING

COMPRESSOR IOL

RUN CAP

ACIT

O

R

ST

AR

T CAP

AC

IT

OR

ST

AR

T RELA

Y

CONT

AC

TOR CONT

AC

TS

LO

W V

O

LTA

G

WIRING

CONTR

O

L TRANSFORMER

THERMOST

AT

CONT

AC

TOR COIL

LO

W V

O

LTA

G

FUSE

STUCK COMPRESSOR

INEFFICIENT COMP

.

REF

. UNDERCHARGE

REF

. O

VERCHARGE

EXCESSIVE EV

AP

. LO

AD

NONCONDENSABLES

RES

. O

.D

. AIRFLO

W

O

.D

. AIR RECIRCULA

TION

TXV STUCK OPEN

SUPERHEA

T

RES

. I.D

. AIRFLO

W

REF

. CIR.

 RESTRICTIONS

SO

V LEAKING

SO

V COIL DEFECTIVE

CHECK V

AL

VE 

LEAKING

*

DEFR

O

ST RELA

Y DEF

.

DEFR

OST CONTR

O

L DEF

.

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
P
P

S
S

S
S

S
S

S
S
S
S

S
S

S
S
S
S

S
S
S
S
S
S
S
S

S
S

S
S

P
P

P
P

S
S

S
S

P
P

P
P

S
S

P
P

P
P
P
P

P
P
P
P
P
P
P
P

S
S
S
S

S
S

S
S

P
P

P
P

P

P
P

P
P

P

P

P
P

P

P
P

P
P

P
P

P

S

S
S

S
S

S
S

P

S

S
S
S

S
S

S

S

S

S
S
S

S

S

S
S

P
P

S
S
S
S
S
S

S
S

S
S

S
S

P

P

P

P
P

P

S

S
S
S
S

S
S

S
S

S
S
P
P

S
S

S
S

S

S

S

S

P

P

P
P
P

P
P

S
S

P

P

P

P

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

*

 - 3 Phase Only

TROUBLESHOOTING CHART — WHAT TO CHECK

Содержание 4TWR4

Страница 1: ...trical and mechanical experience Any attempt to repair a central air conditioning product may result in personal injury and or property damage The manufacturer or seller cannot be responsible for the...

Страница 2: ...ure 6 The maximum length of refrigerant lines from outdoor to indoor unit should NOT exceed sixty 60 feet 7 If outdoor unit is mounted above the air handler maxi mum lift should not exceed sixty 60 fe...

Страница 3: ...hen depressed opens only to the field brazing side when the valve is in the closed position The Gas Line Service Valve is full open with a 1 4 turn See Figure 5 BRAZING REFRIGERANT LINES 1 Remove lowe...

Страница 4: ...feet and or a different size than recommended it will be necessary to adjust system refrigerant charge upon completion of installation See unit Service Facts F ELECTRICAL CONNECTIONS WARNING When ins...

Страница 5: ...switch This will activate the compressor sump heat where used Do not change the Thermostat System Switch until power has been applied for one 1 hour Following this procedure will prevent potential co...

Страница 6: ...1 841 33 1 8 946 37 1 4 870 34 1 4 7 8 3 8 152 6 98 3 7 8 219 8 5 8 86 3 3 8 508 20 4TWR2060A 4 1 1045 41 1 8 946 37 1 4 870 34 1 4 7 8 3 8 152 6 98 3 7 8 219 8 5 8 86 3 3 8 508 20 4TWR4018A 3 1 933...

Страница 7: ...18 BC51D1 3 7 Installer s Guide MOUNTING HOLE LOCATION NOTE ALL DIMENSIONS ARE IN MM INCHES NOTE For model base size see table on page 6 From Dwg D152637 Rev 1...

Страница 8: ...ressor 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 De...

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