Bunn ITB/ITCB, ICB/TWIN manual Troubleshooting, Refill Circuit Problem, Probable Cause, Remedy

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TROUBLESHOOTING (cont.)

REFILL CIRCUIT

PROBLEM

Will not reﬁll

PROBABLE CAUSE

1.Power off to brewer

2.Water shut off

3.Error Message

4.ON/OFF Switch (If equipped)

5.Lime build up on Probe(s)

6.Reﬁll Valve or Control Board

REMEDY

Press ENABLE BREW switch on control panel to determine if power is ON.

Make sure water is ON.

Brewer has shut down due to mal- function (See Diagnostic Section in this manual).

Make sure ON/OFF Switch is "ON" and indicator is lit.

Remove the Level Probe(s) and check for lime deposit on tip. Clean and reinstall.

Check valve.

Reﬁll does not shut off	1.	Lime build up on probe	Remove Level Probe and check
Power "ON"			for lime deposits on tip. Clean and
			reinstall.
	2.	Water Level Sensing System	Replace control board
	3.	Reﬁll valve or control board	Check valve.
			Check valve.

Reﬁll does not shut off	1. Reﬁll valve	Clean or replace valve as needed.
Power "OFF"

5	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