Bunn Hot Water Dispencer H5XA

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

Disconnect the black wire from the contactor coil to the limit thermostat and black wire from the red wire on the main harness on two wire 240V models

Voltage across the red wire and black wire

If voltage is not as described, check the wiring harness

Check for continuity between the left and right terminals on the contactor coil

If continuity is not as described, replace the contactor

Voltage across the upper left terminal and the upper right terminal on the contactor

Warning: Ensure the dispenser is unplugged before starting the procedure

All wires removed from the level control board

Two #8-32 screws removed from level control board and mounting bracket

New level control board and mounting bracket installed to the component bracket

Upload a photo of the reconnected wires

Sign off on the board 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

Voltage is within the correct range for the model

Check the dispenser wiring harness if voltage was not present as described

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

Voltage across terminals 1 & 4 of the electronic control board

Voltage is within the correct range for the model after a delay of approximately 5 seconds

Disconnect the dispenser from the power source

Check the valve for coil action

Sound heard when valve is turned on

If no sound is heard, proceed to next step

Voltage reading when valve is activated

If voltage is not present, check the dispenser wiring harness and control board

Dispenser disconnected from the power source and allowed to cool

Water drained from the tank so the water level is below the outlet

Remove all wires from the solenoid valve coil

Turn-off the water supply to the dispenser

Disconnect the water line from the solenoid valve

Remove the two 8-32 slotted-head screws holding the solenoid valve and mounting bracket to the back panel

Securely install the new solenoid valve to the back panel

Securely fasten the water line to the solenoid valve

Sign off on the solenoid valve replacement