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H10X/H5X
H5E/DV PC
H5 ELEMENT
With Digital Control Board
SERVICE MANUAL
BUNN-O-MATIC CORPORATION
POST OFFICE BOX 3227
SPRINGFIELD, ILLINOIS 62708-3227
PHONE: (217) 529-6601
FAX: (217) 529-6644
To ensure you have the latest revision of the manual or to obtain the illustrated parts catalog, please visit
the Bunn-O-Matic website, at www.bunn.com. This is absolutely FREE, and the quickest way to obtain
the latest catalog and manual updates. Contact Bunn-O-Matic Corporation at 1-800-286-6070 to obtain
a paper copy of the required Illustrated Parts Catalog mailed via U.S. Postal Service.
42311.0000D 12/12 © 2011 BUNN-O-MATIC CORPORATION
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Related Manuals for Bunn Bunn H5DV PC
Summary of Contents for Bunn Bunn H5DV PC
- Page 1 To ensure you have the latest revision of the manual or to obtain the illustrated parts catalog, please visit the Bunn-O-Matic website, at www.bunn.com. This is absolutely FREE, and the quickest way to obtain the latest catalog and manual updates. Contact Bunn-O-Matic Corporation at 1-800-286-6070 to obtain a paper copy of the required Illustrated Parts Catalog mailed via U.S.
- Page 2 AS SPECIFIED HEREIN, TO REPAIR, REPLACEMENT OR REFUND. In no event shall BUNN be liable for any other damage or loss, including, but not limited to, lost profits, lost sales, loss of use of equipment, claims of Buyer’s customers, cost of capital, cost of down time, cost of substitute equipment, facilities or services, or any other special, incidental or consequential damages.
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Page 3: Table Of Contents
WARNING - Inspection, testing, and repair of electrical equipment should be performed only by qualified service personnel. Disconnect the dispenser fromthe power source when servicing, except when electrical tests are required and the test procedure specifically states to connect the dispenser to the power source. CONTENTS TroubleShooting .................... -
Page 4: Troubleshooting
TROUBLESHOOTING A troubleshooting guide is provided to suggest probable causes and remedies for the most likely problems encountered. If the problem remains after exhausting the troubleshooting steps, contact the Bunn-O-Matic Technical Service Department. • Inspection, testing, and repair of electrical equipment should be performed only by qualified service person- nel. - Page 5 TROUBLESHOOTING (cont.) Problem Probable Cause Remedy Equipment will not operate 2. Safety overflow switch Refer to Service – safety overflow switch (cont.) for testing procedures. Automatic refill will not oper- 1. No water Check plumbing and shut-off valves. ate after drawing hot water. 2.
- Page 6 TROUBLESHOOTING (cont.) Problem Probable Cause Remedy Water boils continuously. Refer to Service – electronic controls for 1. Temperature control testing procedures. 2. Lime build-up Inspect the tank assembliy for excess lime deposits. Delime as required. CAUTION – Tanks and tank components should be delimed reglarly depending on local water conditions. Exces- sive mineral build-up on stainless steel surfaces can initiate corrosive reactions resulting in serious leaks.
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Page 7: Component Access
SERVICE WARNING – Disconnect the dispenser from the power source before the removal of any panel or the replacement of any component. WARNING - Inspection, testing, and repair of electrical equipment should be performed only by qualified service personnel. Disconnect the dispenser fromthe power source when servicing, except when electrical tests are required and the test procedure specifically states to connect the dispenser to the power source. -
Page 8: Electronic Controls
SERVICE Liquid Level Control Flow Charts Electronic Controls H5E, H5X LIQUID LEVEL CONTROL PROBLEM: Does Not Refill Overflow Cup Full Remove Power Drain cup Retry Disconnect Level Probe Voltage present at Does Water Flow Replace Probe Solenoid Valve Unplug Ready Lamp Replace Solenoid Valve P4093.35 u ip... - Page 9 SERVICE (cont.) Electronic Controls (cont.) 4. Remove the pink wire from terminal 5 of the elec- tronic control assembly. Liquid Level Control Test Procedure 5. Check the voltage across terminals 1 & 4 of the 1. Disconnect the dispenser from the power source. electronic control board with a voltmeter.
- Page 10 Electronic Controls (cont.) If voltage was not present as described, check the pink 7. Reconnect the pink wire to terminal 5 of the elec- probe wire and the green ground wire for continuity tronic control assembly. and/or replace the probe. 8.
- Page 11 If voltage was present as described, the temperature control of the system is operating properly. 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 #9. 6. Replace the electronic control board.
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Page 12: Limit Thermostat
SERVICE (cont.) If voltage was present as described, reconnect the black Limit Thermostat wire and proceed to #5. Location: If voltage was not present as described, refer to the Wir- The limit thermostat is located on the tank lid. ing Diagrams and check the dispenser wiring harness. To test the limit thermostat, access will also be needed to the terminal block located at the rear of the dispenser. -
Page 13: Safety Overflow Switch
SERVICE (cont.) Removal and Replacement: Safety Overflow Switch 1. Disconnect the black wires from the safety overflow switch. 2. Remove the nut beneath the copper overflow cup. 3. Remove the entire switch assembly from the cup. 4. Place the new switch assembly into the cup, wires first. -
Page 14: Solenoid Valve (Late Models)
SERVICE (cont.) sound after approximately 5 seconds, as the coil Solenoid Valve (Late Models) magnet attracts the plunger. 8. Disconnect the dispenser from the power source. Location: 9. Reconnect the pink wire to terminal 5 of the elec- The solenoid valve is located inside the rear of the tronic control board. -
Page 15: Solenoid Valve (Early Models)
SERVICE (cont.) Solenoid Valve (Early Models) If continuity is present as described, reconnect the wires and proceed to #7. Location: If continuity is not present as described, replace the The solenoid valve is located behind the large access solenoid valve coil. panel on the left side of the dispenser. -
Page 16: Tank Heater
SERVICE (cont.) Tank Heater 4. Remove the tank heater from the tank lid and in- Location: spect it for cracks in the sheath. The tank heater is located in the tank lid. If the sheath shows no sign of damage, proceed to #5. If the sheath is damaged, replace the tank heater. -
Page 17: Steam Sensor
SERVICE (cont.) Removal and Replacement: Steam Sensor (Thermistor) 1. Disconnect the dispenser from the power source. 2. Disconnect the thermistor from J5 on control Location: board. The thermistor is located on the end of the overflow 3. Loosen the set screw and the two screws securing tube above the overflow cup. -
Page 18: Dispense Valve (Pc)
SERVICE (cont.) Dispense Valve (PC Only) If voltage is not present as described, refer to Wir- Location: ing Diagrams and check the dispenser wiring harness. The Dispense Valve is located behind control panel. Also check the control board for proper operation. Removal and Replacement: 1. -
Page 19: Schematic Wiring Diagrams
NOTE: no jumper used on any Model starting with ver. 1.08 120V AC 2 WIRE + GND 120/208V AC 3 WIRE + GND 39333.0000D 09/09 ©2006 120/240V AC 3 WIRE + GND BUNN-O-MATIC SINGLE PHASE CORPORATION 42311 071310 White Strip-Tac Plus... - Page 20 Early H5E, H5X, H10X Install jumper thru ver. 1.04 STATIC SHIELD NOTE: no jumper used on any Model starting with ver. 1.08 230V AC 2 WIRE + GND 39333.0001C 10/09 SINGLE PHASE ©2006 BUNN-O-MATIC CORPORATION 42311 071310 White Strip-Tac Plus...
- Page 21 Early H5E, H5X, H10X Install jumper thru ver. 1.04 STATIC SHIELD NOTE: no jumper used on any Model starting with ver. 1.08 200V AC 2 WIRE + GND 39333.0002A 12/12 SINGLE PHASE ©2006 BUNN-O-MATIC CORPORATION 42311 121312 White Strip-Tac Plus...
- Page 22 REFILL POWER NOTE: no jumper used on any 2 WIRE + GND Model starting with ver. 1.08 SINGLE PHASE 40707.0000C 09/09 © 2008 BUNN-O-MATIC CORPORATION White Strip-Tac Plus Black Ink 42311 071310 Finished Size: 5.5” x 8.0” ~ No Reduction...
- Page 23 HEATER READY Install jumper thru ver. 1.04 100-120 VOLTS AC REFILL POWER NOTE: no jumper used on any 200-240 VOLTS AC Model starting with ver. 1.08 2 WIRE + GND SINGLE PHASE 42375.0000A 09/09 © 2009 BUNN-O-MATIC CORPORATION 42311 071310...
- Page 24 Early H5E, H5X, H10X HEATER READY Install jumper thru ver. 1.04 REFILL POWER 230 VOLTS AC NOTE: no jumper used on any Model starting with ver. 1.08 2 WIRE + GND SINGLE PHASE 40712.0000F 05/11 © 2008 BUNN-O-MATIC CORPORATION 42311 050511...
- Page 25 H5X ONLY TEMP PROBE J2-1 J1-1 REFILL PROBE J1-5 TANK t° 44657.0000B 05/11 ©2011 100-240V AC 2 WIRE + GND BUNN-O-MATIC CORPORATION SINGLE PHASE White Strip-Tac Plus Black Ink Finished Size: 5.5” x 8.0” ~ No Reduction 42311 050511...
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