TAM817
AFC BM LED
Solid ON
AFC COMM LED
Device count
Description
Number of communicating devices*
Description
Normal operation
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 STATUS CODES (GREEN LED)
AFC FAULT CODES (RED LED)
AFC UNIT LED (BLUE LED)
AFC COMM LED (AMBER LED)
AFC BM (Bit Master) LED (GREEN LED)
UnitLED
1Flash
Rapid
Off
SOLIDON
Description
Normal(1flashevery4seconds)
CommunicationBusyError(2flashespersecond)
NoPower
CommunicationscannotbeestablishedwiththeAFC
Airflow Control (AFC)
Distribution
Board
Electronic Expansion Valve Control (EVC)
SW1
R410A / R22
TEST
CLOSE
OPEN
J4
OPEN
TEST
CLOSE
J3
J6
J1
To EEV Stator
To Internal
Condensate
Switch (Optional)
GT Sensor
See Table
ET Sensor
J7 - Motor
J10
STATUS
LED
FAULT
LED
UNIT
LED
FAULT
UNIT
STATUS
STATUS
LED
WIRE
TIE
FAULT
LED
UNIT
LED
BM LED
COMM LED
HUM
J6
24 VAC
J2
J4
13.8 VDC
J8
J9 - EHC/HHC
24 VAC
From Transformer
From DC Power Supply
13.8 VDC
13.8 VDC
J8
J5
J2
13.8 VDC
FAULT
UNIT
STATUS
Y1
O
D
R
B
Y2
COMM
BM
* Examples: communicating thermostat, communicating air cleaner, etc.
AFC Fault
LED Description
OFF No Fault
SolidOn Internal control failure
1 24VAC fuse blown
2
PM Data Corrupt or Missing / Motor Mismatch
3
Communication error 3
4 Blower communication error (Status LED will be ON solid)
5
Internal communication error (refer to Unit LED on EVC, EHC, HHC) (1)(2)
6
Indoor coil air sensor error
8
Twinning erro
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 on the suspect control.
3) Error is associated with the ComfortLink
TM
II or AccuLink
TM
communcating bus.
All LED's will be off if power is not applied.
NOTES:
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