Bunn Hot Water Dispencer H5X Element

Warning: Ensure the dispenser is unplugged and cool before starting the procedure

All wires removed from the solenoid valve coil

Water supply to the dispenser turned off

Water line disconnected from the solenoid valve

Two 8-32 slotted-head screws removed from the solenoid valve and mounting bracket

New solenoid valve securely installed to the back panel

Water line securely fastened to the solenoid valve

Wires reconnected to the solenoid valve

Disconnect the dispenser from the power source

Remove the blue wire from terminal 1 and the pink wire from terminal 4 of the circuit board

Voltage across terminals 2 and 3

Disconnect the dispenser from the power source

Reconnect the blue wire to terminal 1

Connect a piece of insulated jumper wire to terminal 4

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 device is unplugged before starting the procedure

All wires removed from the electronic control board terminals

Six 6-32 screws removed from the electronic control board

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

Temperature sensor, overflow tube temperature sensor, and indicator wires attached to the new electronic control assembly

New electronic control board fastened 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

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

Disconnected the dispenser from the power source

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

Voltage across the black wire removed from the limit thermostat and the white wire or red wire of the terminal block

Voltage was present as described

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

Checked the dispenser wiring harness