UGH025-0504
Thermolator TW Series
T
ROUBLESHOOTING
6-15
TW-1, TW-2
C
ONTROL
O
THER
W
ARNINGS
The Thermolator has detected a problem that could lead to a prob-
lem if it is not corrected.
u
The Thermolator continues operating.
u
The control displays a red LED indicating the source of the
problem.
Alarm
The SPI communica-
tion link has failed.
DIP Switch Error
Possible cause
The unit is not connected
to a host machine.
The network address and
baud rate are incorrect.
Something is wrong with
the cable.
The controller type DIP
switches (7 and 8) inad-
vertently changed since
the last power up
sequence.
Solution
If the Thermolator is not con-
nected to a host device, set the
SPI address to OFF using the
Setpoint adjustment buttons on
the control panel.
r
Check the network address.
The address may be set to
any number from 32 to 254
(a hexadecimal integer
between 20 and FE), as long
as that number has not been
assigned to another machine
connected to the same net-
work.
r
Make sure the baud rate
(9600, 4800, 2400, or 1200)
matches the host machine.
Check the communication
cable condition and connec-
tions. The cable must conform
to SPI standards. Check for
loose connections on the
motherboard.
Power down the controller and
reset the controller type DIP
switches (7 and 8) to the previ-
ous settings.
Refer to TW-1,
TW-2 Control Initial Setup,
Section 3 for details on the
proper DIP switch settings.
SPI Communication
tyP
SET
Summary of Contents for Thermolator TW
Page 68: ...Thermolator TW Series UGH025 0504 5 16 MAINTENANCE...
Page 102: ...Thermolator TW Series UGH025 0504 6 34 TROUBLESHOOTING...
Page 105: ...UGH025 0504 Thermolator TW Series APPENDIX B 1 PUMP CURVES...
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Page 114: ...TW 1 CIRCUIT BOARD UGH025 0504 PD 2...
Page 115: ...UGH025 0504 TW 2 CIRCUIT BOARD PD 3...
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