Bunn ITB/ITCB Coffeemaker User Manual


 
6
HEATING CIRCUIT
1. Display's error message
2. Water not touching main (short)
level probe
3. Water Level Probe Sensing
System
4. Temperature Probe
5. Limit Thermostat or TCO
6. Tank Heater
1. Lime build up on temperature
probe, tank or tank heater
2. Temperature Probe
3. Control Board
1. Plumbing lines
2. Water supply
3. Lime build up
Brewer has shut down due to mal-
function. See Diagnostics.
Remove level probe and grommet.
Look into hole on tank lid. Water
must be within approximately one
inch from top of tank.
Check refi ll circuit. Heaters will not
turn on if water is not grounding
level probe.
Check/replace
Check/replace
Check/replace
Inspect probe and tank assembly
for excessive lime deposits. Delime
as required.
Check/replace
Check/replace
Plumbing lines should not rest on
the counter top.
The brewer must be connected to
a cold water supply.
Remove the tank lid and clean in-
side of tank with a deliming agent,
if necessary.
Water does not heat to proper
temperature
IMPORTANT: Make sure no tem-
perature tests are taken before
the display reads ready. Tank tem-
perature must be stabilized before
readings are taken.
Spitting or excessive steaming
(cont.)
Brewer is making unusual noises
TROUBLESHOOTING (cont.)
PROBABLE CAUSE REMEDY
PROBLEM
42461 0911809