Pump Status Leds - Graco Core E1 Operation, Repair, And Parts

Pump Status LEDs

The Transfer Pump Controller (TPC) uses five LEDs to communicate the current status of the pumps and TPC. The
two LEDs on the top relate to the electric motor status (A on the left, B in the center). The three LEDs on the bottom
right are the TPC status LEDs.
A/B Motor
A Blue
LED Status Definitions
LED Conditions
A/B Electric Off
Motor Status
Red and Blue
LEDs
Purple
Blue
Red
TPC Status Green Solid
Yellow Flashing
Red Steady Flashing
Red Random Flashing or
Solid
3A8503C
B Blue
Description
No AC Power Detected
Startup
Idle
On:
• 1 flash for top changeover
• 2 flashes for bottom changeover
Error
Low voltage power applied to module
Active communication
Software update in progress
Module error exists
Green
TPC Status
Yellow
Red
Operation
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