Control System Alarms - Conair Thermolator TW-1 User Manual

TW-1, TW-2
C S
ONTROL YSTEM
A
LARMS
Alarm
ERR
RAM hardware
failure.
ERR
ROM, checksum
failure.
ERR
ERR
COP failures.
ERR
Illegal Opcode.
ERR
through
ERR
ERR
ERR
Software cannot
write to CPU non-
volatile memory.
6-16
T
ROUBLESHOOTING
The Thermolator has detected a non-recoverable error involv-
ing he microprocessor control.
u The Alarm LED lights and the STOP/RUN LED flashes red.
u The Thermolator shuts down or will not start.
u The control displays an error code indicating the source of
the problem.
Cause
Electrical noise or failed
001
CPU on the motherboard
caused system write tests
to fail during power up.
The CPU and/or PROM
002
chip (U1 or U2) is not
making good contact with
its socket, or the PROM
chip has failed.
A failed CPU, failed moth-
003
erboard, software bug or
electrical noise caused an
internal software error.
004
The CPU tried to execute
005
an illegal software instruc-
tion due to electrical noise
or a failed motherboard.
A failed CPU, failed moth-
006
erboard, software bug or
electrical noise caused an
internal software error.
014
The memory has exceeded
015
its usable life or there is a
software bug. This error
occurs only after changes
016
have been made to non-
volatile memory either
through the operator panel
or SPI.
Thermolator TW Series
Solution
Make sure all connections on
the motherboard are solid.
Operate unit in a noise free
environment. If error persists,
contact Conair service.
Make sure the CPU and PROM
chips are seated correctly in the
sockets. If error persists, contact
Conair service.
Cycle power to the unit. If the
problem persists, contact Conair
service technicians. You may
need to replace the mother-
board.
Make sure all connections to
the motherboard are solid and
that the unit is operating in a
noise free environment. If error
persists, contact Conair service.
Cycle power to the unit. If the
problem persists, contact Conair
service technicians. You may
need to replace the mother-
board.
Cycle power to the unit. Contact
Conair service if an operating
parameter such as the setpoint is
not being saved or if this error
persists.
UGH025-0504