TCi MFC A - Page 56

MFC Kit Instructions 6.0 Troubleshooting
53
Table 27: LED Functions
LED
LED Color
Description
D1
Green
Output Relay 1
D2
Green
Output Relay 2
D5
Green
Detection Status LED
D6
Green
Microprocessor Status LED
D11
Green
RS485 Communication is active
D20
Green
24V LED
D21
Green
5V LED
Note: Status LED’s will blink according to the filter status. The microprocessor status LED will blink
1hz if the filter is okay, however if there has been an alert the LED will blink according to the status
detection. It will initially start with slow blinks (3 = Filter Status Detections), then blink fast depending
on the fault. The tables below summarize the LED blinks based on the fault condition.
Table 28: D6 LED Codes (Microprocessor Status LED)
Status
LED Specifier
No fault detected/ enabled
LED Blinking at 1Hz
PCB Not Calibrated
LED Solid On
Status Detection Active
LED Solid Off
Table 29: D6 LED Codes (Detection Status LED)
Detection
LED Specifier
(On/Off or Slow - Fast
Blink Sequence)
No fault detected/ enabled
LED Solid Off
PCB Not Calibrated
LED Solid On
Overvoltage Phase A
3 – 1
Overvoltage Phase B
3 – 2
Overvoltage Phase C
3 – 3
High THVD Phase A
3 – 4
High THVD Phase B
3 - 5
High THVD Phase C
3 - 6
Thermal Switch 1
3 - 7
Thermal Switch 2
3 - 8
PCB Under Temperature
3 - 9
PCB Over Temperature
3 - 10
Phase Loss A
3 - 11
Phase Loss B
3 – 12
Phase Loss C
3 – 13
CPU Error
3 – 16