Bunn ITB/ITCB, ICB/TWIN manual Diagnostics, Message Probable Cause Remedy

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DIAGNOSTICS

MESSAGE

PROBABLE CAUSE

REMEDY

Temperature Too Low

1.Water temperature in the tank does not meet the ready tempera- ture.

A)Wait for the brewer to heat to the proper temperature.

B)Disable the BREW LOCKOUT function. Refer to programming section for procedure.

Heating Time Too Long

Fill Time Too Long

Temp Sensor Out Of Range, Check For Bad Connections

Temp Sensor Out Of Range, Check Wire For Shorts

1.	Tank Heater failure.			Replace or repair as needed
2.	Control Board/Thermistor fail-			Replace or repair as needed
ure
1.	Water shut off to brewer			Check water supply shut-off
2.	Supply line too small or ob-			Replace or repair as needed
structed
3.	Inlet Solenoid failure			Replace or repair as needed
4.	Control Board Failure			Replace or repair as needed
5.	ON/OFF switch is OFF			Turn switch ON
1.	Temperature	Sensor	Probe	Replace or repair as needed
open
1.	Temperature	Sensor	Probe	Replace or repair as needed
wire(s) shorted

9	42461 0911809

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Contents ITB/ITCB ICB/TWIN BUNN-O-MATIC Commercial Product Warranty Introduction Control Boards TroubleshootingRefill Circuit Problem TroubleshootingProbable Cause RemedyHeating Circuit Problem Probable Cause Remedy Brewing Circuit Problem Probable Cause Remedy Problem Probable Cause Remedy Troubleshooting Brewing CircuitMessage Probable Cause Remedy DiagnosticsICB Component Access Component AccessControl Board Membrane Switch Continuity Membrane SwitchExploded View Early Brew ValveLate Model Brew Valve Brew Valve Late ModelsRefill Valves DisassemblyEarly Itcb Refill Valves Early ICBICB Twin Tank Heaters Tank HeatersLimit Thermostats Limit ThermostatTesting Temperature Probe Temperature ProbeCalibrate Temp Probe CalibrationTest Procedure Voltage Selector SwitchTest Procedure Removal and Replacement Power SwitchSchematic Wiring Diagram iTCBA, iTCBB Schematic Wiring Diagram With Factory Sweetener Schematic Wiring Diagram ICB-DV Schematic Wiring Diagram ICB Twin Schematic Wiring Diagram iCBA, iCBB Schematic Wiring Diagram ICB Twin 230V Chassis Ground Term Schematic Wiring Diagram ITB