Section 19. Checkout Procedures - Trane TAM7A0A24H21SB Installer's Manual

Unit Test Mode
Unit Test Mode will exit if any demand is given to the unit.
To enter Unit Test Mode:
1. Set System Switch on comfort control to Off
2. Cycle power to the unit, wait 5 seconds
3. Within thirty seconds, press and hold the Unit Test Button
for 1-2 seconds
Sequence of Unit Test Mode
1. EVC drives the EEV motor to the 1st stage position for 5
seconds
2. EVC drives the EEV motor to the 2nd stage position for 5
seconds
3. AFC energizes the blower at 50% and then continues
to ramp until it reaches 100% cooling airflow. Humidifier
contacts close when the blower starts
4. EHC energizes the W1, W2, and W3 circuit relay(s) for 5
seconds in 5 second intervals
5. All relays de-energize and the blower shuts off after five
seconds.
If a fault occurs during the Unit Test Mode, the LED will flash
the code and continue the test
Fault reporting
This unit stores the last four faults that have occurred. Each
device will report the last four faults after each power
cycle of the unit. See the Fault Table section in the
Service Facts for a list of fault codes

Section 19. Checkout Procedures

19.1 Operational And Checkout Procedures
Final phases of this installation are the unit Operational and Checkout Procedures. To obtain proper performance,
all units must be operated and charge adjustments made in accordance with procedures found in the Service
Facts of the Outdoor Unit.
After installation has been completed, it is recommended that the entire system be checked against the following list:
1. Be sure unit suspension (if used) is secure and that there
are no tools or loose debris in or around or on top of the
unit. .............................................................................. [ ]
2. Properly insulate suction lines and fittings. .................. [ ]
3. Properly secure and isolate all refrigerant lines. .......... [ ]
4. Verify that all electrical connections are tight. .............. [ ]
5. Check all duct outlets; they must be open and unrestrict-
ed. ................................................................................ [ ]
6200 Troup Highway
Tyler, TX 75707
www.trane.com
Clearing Faults
To clear the last four faults of all control boards:
CHECKOUT PrOCEDUrE
6. Check drain lines and be sure all joints are tight. ........ [ ]
7. Be sure the return air filter is installed. ......................... [ ]
8. Verify that all dip switches have been set correctly for your
9. Operate complete system in each mode to
The manufacturer has a policy of continuous product and product data improve-
ment and it reserves the right to change design and specifications without notice.
© 2012 Trane
Unit Test Button
TRANE U.S. INC.
HUM
J1
T1
J8
BAR CODE
C17 C16
D10
1
R28 R26
D30
J9 C45
Y1
R82
R85
O
D15
C27
B
Yo R45
R50
D20
C33 C32
R
R63
R56
Yo Jumper
STATUS W2
W1
UNIT R66
D33
Q8
R101
FAULT
K2
R70
D28
R80
R73
Airflow Control (AFC)
1. Press and hold the Unit Test Button for 10-12 seconds.
2. Release the Unit Test button and "wait" 5 seconds.
3. Cycle 230VAC power to the unit. (the blower panel can
be removed to achieve this)
application. .................................................................. [ ]
verify proper performance. Verify operation of supplemen-
tary electric heater. ....................................................... [ ]
J4
Pb
PART NO. LABEL
C7
T2 C37
C3
R5 D1 R19
R12
R7
C2
D2
R3
R2 R8
C6
R21
D7 D4
K1
R42 R34
D3
D6
Q1
R25 R18
D5
C5 C4
D11 D8 R39 R33
R24 R17 R40
R43
R10
R46
C23
R9 U2
R27 R11 R15
R16
R41 R57 R58
C25 16 1
D12
C24 17 64
C44
D31
D13
C36
J3
R23
C31
R32 R36 R20
R84 R38
D18 32 49
C26 C29 D19 C35
D16 C30 48 R65 R64
33
C43
X1
R78 R76
R49 R52 R54
R55
R86
R69 R72 R71
R75
D21
R91 R98
D26 C41 D27
D29 C49
R62 R74
C59
C48 R97
B K Jumper C46
R109
R106 D36
D24 R95
C53 U4
D35
R99
R68 R102
C52 C47
C40
U3 L2
R110
R94 C58
C50
MOV1
R100 R104
C39 R67 C38 C51
D32 D23
L3
J6
S3
+13.8V
TEST
OU
HP
1
1
R4
R NET
C1
R NET 2
R1
U1
R13
R14
C42
R77
Q3
Q
R79
R83
R47
R81
R37
Q6
R5
R61
R89
Q7
R105
C60
R103
TZ2
C54
R96
C57