Grindmaster PBIC-430V2E230 User Manual

• Low (long) electrode

coated with lime or
faulty.

• Connection from 

control board to tank
body faulty.

• Connections from 

control board to heater
relay faulty.

• Line voltage connections

to heater relay faulty.

• Connections to 

remainder of heater 
circuit faulty.

• Heater relay faulty.

• Thermal cut-out tripped

or faulty.

• Disconnect electrode

wire at quick connect
(purple wire). Connect a
wire from the quick con-
nect to the cabinet body.
If heating begins, this is
the error cause.

• Check to ensure 

connection (green wire)
is secure.

• Check to ensure 

connections (gray and
blue wires) are secure.

•  Check to ensure 

connections (black and
brown wires) are secure.

• Check to ensure 

connections from relay
to thermal cut-out and
from thermal cut-out to
contactor and from 
contactor to proper ter-
minal of terminal block
are secure. See wiring
diagram for more info-
mation.

• Ensure that coil on

heater relay is energized
by ensuring that there is
24 VDC between the
gray and blue wires
attached to the relay.
Remove the black and
brown wires from the
relay and check for an
open circuit across the
connection tabs (COM
and NO) to which the
wires were attached.

• Check for open circuit

on thermal cut-out.
(NOTE: Tripping of 
thermal cut-out can 
indicate presence of
another problem with 
the unit. Unit should
be monitored)

• Remove electrode assembly

and clean the probes. If 
problem is not corrected,
replace electrode assembly.

• Make connection to 

tank secure.

• Make connections to 

relay secure.

• Make connections to 

relay secure.

• Make connections secure.

• If the relay coil is energized 

and there is an open circuit
across the connection tabs,
replace relay.

• Replace thermal 

cut-out.