5
AM7A0C36H31-SF-1A
SUBCOOLING AdJUSTMENT
The following combinations should be charged to 8
degrees sub-cooling to maintain rated HSPF.
Indoor Unit Model No.
Outdoor Unit Model No.
*AM7A0C36H31SA
4A6B4036E1
4A6H5036E1
4TWB4036E1
4TWR5036E1
* May be “A” or “T”
All other non-rated matches must be charged per the
nameplate charging instructions.
Unit Test Mode
Unit Test Mode will exit if any demand is given to the unit.
To enter Unit Test Mode:
1. Shut System Switch on comfort control to Off
2. Power cycle unit power, wait 5 seconds
3. Press and hold the Unit Test Button for 1-2 seconds
Sequence of Unit Test Mode
4. EVC drives the EEV motor to the 1st stage position for 5
seconds
5. EVC drives the EEV motor to the 2nd stage position for 5
seconds
6. AFC energizes the blower at 50% and then continues
to ramp until it reaches 100% cooling airflow. Humidifier
contacts close when the blower starts
7. EHC energizes the W1, W2, and W3 circuit relay(s) for 5
seconds in 5 second intervals
8. 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
Clearing Faults
To clear the last four faults of all control boards, press and
hold the Unit Test Button for 10-12 seconds.
Pb
FAULT
UNIT
48
33
32
17
16
1
64
49
B K Jumper
TEST
TRANE U.S. INC.
VD
D
PG
D
MC
LR
VS
S
PG
C
3.3
V
SC
L
SD
A
GN
D
HUM
PART NO. LABEL
BAR CODE
1
2
3
4
5
STATUS
Yo Jumper
+13.8V
C60
C59
R57
R58
R64
R65
R76
R78
S3
R110
R41
R68
C40
R
93
R109
R12
R55
R23
R20
R49
R13
R14
D23
D19
D18
C46
C39
C6
C23
R80
R71
R67
R52
R75
R72
C41
R61
Q6
Q7
R1
R33
R34
J4
Q1
X1
U4
U3
TZ2
T2
T1
R99
R98
R97
R
60
R96
R95
R21
R91
R
87
R
88
R70
R86
R83
R81
R66
R79
R77
R54
R103
R106
R4
R104
R
51
R5
R47
R42
R39
R82
R37
R
35
R
31
R74
R89
R25
R18
R19
R10
R9
R8
R3
R2
R5
R7
Q8
MOV1
L2
L3
K1
J3
J6
J9
D36
D35
D1
D
22
D29
D
25
D24
D7
D4
D2
D28
C57
C54
C51
C49
C48
C47
C52
C43
C42
C36
C35
C
34
C31
C30
C29
C7
C3
C2
C1
U1
C58
R105
C50
U2
R24
R17
D6
D3
R NET
R NET 2
R73
1
J8
Yo
R
B
O
Y1
J1
W2
W1
R63
R62
R56
D21
D20
C32
C33
R38
R36
R16
R15
R32
R11
R28
R27
R26
D13
D12
D5
D11
D10
C24
C25
C4
C5
C16
C17
D8
R50
R45
R85
R84
D16
D15
D31
D30
C26
C27
C44
C45
D32
D33
R94
R100
R101
R
10
7
K2
R
6
C53
C
22
C
19
C
15
C
12
C
9
C
8
C
11
C
14
C
18
C
21
D26
R69
C37
C38
L1
R102
D27
R40
R46
R43
Q3
Q
1
1
HP
OU
Airflow Control (AFC)
Unit Test Button
