Testing No Power, Single Group
Testing No Power, Single Group
Time Needed: 10 Minutes
Parts Needed: None
Tools Needed: #2 Phillips Screwdriver
Multi Meter
Circuit Board Reference
#1 - Main power - 24v DC from power supply #2 - Relay
#3 - Display ribbon cable
#4 - Transducer
#5 - Level probe
#6 - Switches
#7 - RTD
#8 - Pump
#9 - Solenoids
Step 1: Remove cup tray and back panel. Set the panel aside with the ribbon cable still connected
Step 2: Verify the ribbon cable is connected into #3 port on circuit board and on the display attached to the back panel
Step 3: Verify lights on circuit board are on
If lights are not on, continue to step 4
Step 4: Turn multimeter to AC volts and test power to power supply
If voltage is 240V AC, continue to step 5.
Step 5: Remove #1 port from circuit board. Change multimeter to DC and test outward voltage on power supply
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