Bunn Hot Water Dispencer H5X-60-240-212F

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 correct range

Voltage across the tank heater terminals within the correct 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 correct 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 dispenser from the power source and turn-off the water supply to the dispenser

Pink wire removed from terminal 5 of the electronic control board

Voltage across the solenoid valve coil terminals

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

Both wires removed from the solenoid valve coil terminals

Continuity present across the solenoid valve coil terminals

If continuity is not present as described, replace the solenoid valve coil

Solenoid valve coil action checked

Remove all wires from the electronic control board terminals

Remove the six 6-32 screws holding the electronic control board to the component bracket

Disconnect the temperature sensor, overflow tube temperature sensor, and indicator wires from the electronic control board

Attach the temperature sensor, overflow tube temperature sensor, and indicator wires to the electronic control assembly

Fasten the new electronic control board to its bracket

Upload a photo of the reconnected wires

Refer to Fig 2 when reconnecting the wires

Review the initial set-up procedures on page 6

Sign off on the electronic control replacement

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

Voltage across the black wire on the thermostat and the white or red wire at the terminal block is within the correct range

If voltage is not present as described, refer to the Wiring Schematics and check the dispenser wiring harness

Voltage across the blue/black wire on the thermostat and the white or red wire at the terminal block is within the correct range when the thermostat is turned 'ON'

Voltage is not indicated when the thermostat is turned 'OFF'

If voltage is not present as described, replace the thermostat

Sign off on the thermostat test