Bunn Hot Water Dispencer H5X--60-208

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: Ensure the dispenser is unplugged before starting the procedure

Both wires removed from the thermostat terminals

Top lid removed from the dispenser

Two #6-32 screws removed from the thermostat

New thermostat fastened to the mounting bracket

Ensure that the capillary tube is away from any electrical termination and is not kinked

Grommet slid to the red mark on the capillary tube

Bulb inserted through the hole in the tank and grommet pressed firmly

Warning: Ensure the power source is turned off before starting the procedure

Voltage verified at the power source

Continuity present across the safety overflow switch red wires when the plastic float is raised

Continuity returns when the plastic float is lowered

If continuity is not present as described, proceed to replace the safety overflow switch

Black wires disconnected from the safety overflow switch

Nut beneath the copper overflow cup removed

Entire switch assembly removed from the cup

New switch assembly placed into the cup, wires first

Disconnect the dispenser from the power source

Voltage across terminals 3 & 4 of the electronic control board

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 after connecting the dispenser to the power source

Disconnect the dispenser from the power source

Reconnect the pink wire to terminal 5 of the electronic control assembly

Loosen the compression fitting, remove the probe from the tank lid, and inspect it for mineral deposits. Replace it if necessary. Keep the exposed ends of the probe away from any metal surface of the dispenser

Voltage across terminals 1 & 4 of the electronic control assembly after connecting the dispenser to the power source

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