Graco 26D000, Operation, Repair, And Parts

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Operation
3A8503C 19
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.
LED Status Definitions
LED Conditions Description
A/B Electric
Motor Status
LEDs
Off No AC Power Detected
Red and Blue Startup
Purple Idle
Blue On:
• 1 flash for top changeover
• 2 flashes for bottom changeover
Red Error
TPC Status Green Solid Low voltage power applied to module
Yellow Flashing Active communication
Red Steady Flashing Software update in progress
Red Random Flashing or
Solid
Module error exists
TPC Status
A/B Motor
Green
Yellow
Red
B Blue
A Blue