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AFC STATUS LEdS
AFC STATUS LED
ON SOLID
1 Flash
Multiple Flash
AFC FAULT COdES
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
5
Internal communication error (refer to Unit LED on EVC, EHC, HHC)
11
EVC has detected a fault condition (refer to Fault LED on EVC)
12
EHC / HHC has detected a fault condition (refer to Fault LED on EHC / HHC)
1) If Unit LED on AFC is flashing 2 times/second, AFC is causing the error.
2) Unit LED on suspect control will flash 2 times/second. All LED's will be off if power is not applied.
Unit LED
1 Flash
Normal
Rapid
Communication Busy Error
Off
No power
AM7A0C36H31-SF-1A
Power up and during last 4
fault history sequence
Stand‐by or idle
CFM demand ‐ 1 flash per 100
cfm
12
STATUS
LED
Description
TRANE U.S. INC.
J1
Y1
O
B
Yo
R
UNIT
Yo Jumper
STATUS
STATUS
LED
W2
W2
UNIT
UNIT
R66
Q8
FAULT
FAULT
FAULT
R70
LED
D28
R80
R73
(1)(2)
HUM
T1
T2
J8
R7
BAR CODE
D5
C17
C16
D11
D10
1
R26
R28
R27
R16
D12
D30
C45
C44
D31
J9
R84
R38
R85
R82
D15
D18
C27
C26
D16
R45
R49
R55
R50
R69
D20
C32
C33
D21
R63
R56
R62
R74
DH Jumper
W1
W1
D33
C52
R101
R94
K2
R100
D32
J6
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