Bennett 3000 Series - Troubleshooting: No Display

Bennett 3000 Spec 300 Series Instruction Manual Service & Troubleshooting
67
PROBLEM 2: NO DISPLAY
Refer to the table below for a description of various causes of the problem and the solution.
CAUSE
SOLUTION
Breaker Turned Off
Turn Breaker On
Fuse Blown on CPU
Test Fuse F1. If bad replace with good 3A slow blow. If good continue.
Power Wire is broken or disconnected before
it gets to the pump.
Measure voltage on input terminal TS1 pins 1 and 2. If no power, you have a wiring
problem between the breaker panel and the dispenser. If power measures good on
TS2 and fuse F1 is good, make sure the Hot and Neutral going to the input terminal
strip TS2 are going to the correct terminals. Refer to the installation drawing in the
back of this manual.
Terminal Strip TS1
If this is a startup, and all the above checks have been made, remove the quick
disconnect terminal strip from the board and inspect for damage. If necessary,
replace the terminal strip.
CPU
If this is a startup, and all the above checks have been made, replace the CPU with
a known good one. Also, check for cross phasing before replacing CPU.