Troubleshooting - Grindmaster ICB-400 Operation And Instruction Manual

Troubleshooting

The following pages are provided to help determine the cause of problems with operation of the brewers and to
indicate the appropriate solution for the problems. For each problem, the possible causes should be checked in the
order shown until the exact nature of the problem is determined.
The following procedures must be performed by a qualified service technician. Unplug
the machine before cleaning or servicing it.
Problem
ER1
ER2
Problem
Overfilling water
tank when power
is Off
Overfilling water
tank only when
power is On
American Metal Ware
®
Error Messages
Possible Causes
•Fill valve on for over 5
min. (This occurs
during initial fill on
some units-see Initial
Start-up.)
•Thermistor failure or
loose connections in
thermistor circuit.
Filling Problems
Possible Causes
•Fill valve not sealing
properly.
•Fill valve installed
backwards.
•High electrode coated
with lime or faulty.
•Connection from
control board to tank
body faulty.
•Control board is faulty.
Brewers
Service Check
•Check system for water
leaks.
•Ensure that connector
CN7 is securely
attached to controller
and that thermistor
disconnect is securely
connected.
Service Check
•Check to see if water
enters tank
continuously
(usually at a slow rate).
•Look for flow direction
arrow on valve body.
•Disconnect electrode
wire at quick connect
(red wire). Connect a
wire from the quick
connect to the cabinet
body. If filling stops,
this is the error cause.
•Check to ensure
connection (yellow
wire) is secure.
•Secure connection
from control board to
metal enclosure does
not stop filling.
Remedy
•Correct any leaks and reset controller.
•Secure connections and reset
controller. If error reoccurs, replace
thermistor.
Remedy
•Disassemble valve and clean out
debris. Valve may need a new plunger
if seal is worn.
•If arrow on valve is pointing toward
water inlet, remove valve and install
arrow pointing away from inlet.
•Remove electrode assembly and
clean the probes. If problem is not
corrected, replace electrode assembly.
•Make connection to tank secure.
•Replace control board.
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