Afc Status Codes (Green Led); Afc Fault Codes (Red Led); Unit Led (Blue Led) - Trane 7 Series Field Reference Data

AFC STATUS CODES (GREEN LED)

AFC STATUS LED Description
ON SOLID Power up and during last 4 fault history sequence
1 Flash (per second) Stand-by or idle
Multiple Flash CFM demand - 1 flash per 100 cfm

AFC FAULT CODES (RED LED)

AFC Fault
LED
OFF No Fault
Solid On
Internal control failure
1
24VAC fuse blown
PM Data Corrupt or Missing / Motor Mismatch
2
4 Blower communication error (Status LED will be ON solid)
Internal communication error (refer to Unit LED on EVC, EHC, HHC)
5
EVC has detected a fault condition (refer to Fault LED on EVC)
11
EHC / HHC has detected a fault condition (refer to Fault LED on EHC / HHC)
12
(1) If Unit LED on AFC is flashing 2 times/second, AFC is causing the error.
NOTES:
(2) Unit LED on suspect control will flash 2 times/second on the suspect control.
All LED's will be off if power is not applied.

UNIT LED (BLUE LED)

Unit LED
1 Flash Normal (1 flash every 4 seconds)
Rapid Communication Busy Error (2 flashes per second)
Communications cannot be established with the AFC
SOLID ON
Off No Power
Description
Description
TAM7­20
J1
STATUS
LED
UNIT
STATUS
STATUS
LED W2 W2
UNIT
UNIT R66
Q8
FAULT FAULT
FAULT
LED
D28
R80
(1)(2)
TRANE U.S. INC.
HUM
T1
T2
J8
R7
BAR CODE
D5
C17 C16
D11
D10
1
R26
R28 R27
R16
D12
D30
C45 C44 D31
J9
Y1
R84 R38
R85 R82
O
D15 D18
C27 C26
D16
B
Yo R45
R49
R55
R50
D20 R69
C32
C33 D21
R
R63
R56
R62 R74
Yo Jumper
DH Jumper
W1 W1
D33 C52
R101
R94
K2
R70
R100
D32
R73
J6