Trane AM7A0C48H41SA Series User Manual

TAM722
EHC STATUS CODES (GREEN LED)
UNIT LED (BLUE LED)
EHC FAULT CODES (RED LED)
EHC Fault
LED Description
OFF Nofault
1 Internalcommunicationerror
2 Heatrelaystuckopen
3 Heatrelaystuckclosed
4 Non‐cyclinglimit(NTCO)orelementopen
5 Cyclinglimit(CTCO)open
6
Configurationerror
(1)
8 Blowerinterlockrelaystuckopenorstuckclosed
1) Confirm heater model and kw jumper match
NOTES:
EHC STATUS LED
1
2
3
4
5 5 heater relays energized
Standby mode STATUS LED will flash 1 time per second
On a call for heat, STATUS LED will flash per the table above every 4 seconds
NOTES
Description
1 heater relay energized or stand by (see note)
2 heater relays energized
3 heater relays energized
4 heater relays energized
UnitLED
1Flash
Rapid
Off
SOLIDON
Description
Normal(1flashevery4seconds)
CommunicationBusyError(2flashespersecond)
NoPower
CommunicationscannotbeestablishedwiththeAFC
20KW
15KW 10KW
8KW
5KW
PARK
TRANEU.S.INC.
FAULT
STATUS
UNIT
T8
T7
T6
13.8V
D
AT
A A
DA
T
A
B
G
ND
+5V
+13.8V
GND
25KW
R73
R72
R7
1
R70
M
OV1
D23
D22
R
69
R
6
6
JP1
C13
R6
5
R6
4
R63
R62
R
6
1
R6
0
R19
R18
D8
D7
T11
T9
R5
6
R
55
R5
4
R53
R52
R
51
R50
R49
R48
R47
R46
R45
R44
R37
R36
R30
R
2
9
D20
D1
9
D17
D16
D15
D14
D12
D11
D10
D9
C11
C9
P3
AUX PGC P
G
D
VSS
V
D
D
M
CL
R
1
P1
X1
U1
T2
T1
R43
R41
R39
R27
R26
R38
R33
R32
R35
R34
R28
R31
D6
D5
D3
D2
D1
C
10
C5
C7
C6
C4
C3
C8
C2
C1
P2
K6
U3
U2
U4
R5
R10
R15
R20 R25
U5
U6
U7
U8 U9
R40
T5
T4
T3
T10
T12
R14
R13
R9
R8
R7
R6
R4
R3
R2
R1
R17
R16
R12
R11
R23
R22
R21
R24
K1
K2
K3
K4
K5
R57
R58
R59
C12
D4
D21
R67
R68
D24
D25
STATUS
LED
FAULT
LED
UNIT
LED

Trane AM7A0C48H41SA Series Specifications

General

Brand	Trane
Model	AM7A0C48H41SA Series
Category	Air Handlers
Language	English