Bunn Hot Water Dispencer H10X-80-208

Warning: Disconnect the dispenser from the power source before starting the test

Disconnected the dispenser from the power source?

Remove the black wire at the limit thermostat coming from the terminal block

Voltage across the black wire and the white or red wire of the terminal block

If voltage was not present as described, check the dispenser wiring harness

If voltage was present as described, reconnect the black wire and proceed to next step

Warning: Disconnect the dispenser from the power source before starting the test

Voltage across terminals 3 & 4 of the electronic control circuit board within the specified range

Voltage across the tank heater terminals within the specified range

Was voltage present as described in the first test?

If voltage was not present as described, contact Bunn-O-Matic to order an electronic control board and temperature sensor for evaluation and proceed to next step

Replace the electronic control board

Voltage across the tank heater terminals within the specified range after replacing the electronic control board

Was voltage present as described in the second test?

If voltage was present as described, the temperature control of the system is operating properly. Return the new electronic control board or temperature sensor to Bunn-O-Matic for credit

Warning: Disconnect the switch harness from CBA before starting the test

Continuity present when switch is pushed in?

Connect ohmmeter red lead to the red wire (+) and black lead to tan wire (-)

Select the resistance/continuity or diode scale

Does the LED glow from the meter's battery power source?

Sign off on the Dispense Switch Test

Both wires removed from the limit thermostat terminals

Two #10-32 nuts removed attaching the limit thermostat to the top of the tank

New limit thermostat installed and secured into place with two #10-32 nuts

Wires reconnected according to schematic wiring diagrams

Sign off on the thermostat replacement

Warning: This procedure requires trained personnel with PPE!

Disconnect the dispenser from the power source

Voltage across terminals 3 & 4 of the electronic control board

Remove the pink wire from terminal 5 of the electronic control assembly

Voltage across terminals 1 & 4 of the electronic control board