Specifications
Table Of Contents
- ugh015-0100.pdf
- Contents
- Introduction
- Description
- Installation
- Operation
- Maintenance
- Troubleshooting
- Before beginning
- Diagnostics
- Repair
- Checking and replacing fuses
- Resetting overloads
- Replacing the pump overload
- Replacing the motherboard
- Replacing the heater contactor
- Checking thermocouples
- Replacing thermocouples
- Repairing solenoid valves
- Replacing heater elements
- Removing the pump
- 3/4-2 Hp Pump disassembly/assembly
- 3-7.5 Hp Pump disassembly/assembly
- Appendix
- Parts/Diagrams
WARNING
ALARMS
Thermolator TW-1 and TW-2 UGH015/0100
6-10 TROUBLESHOOTING
The Thermolator has detected a problem that could lead to a shut
down condition if it is not corrected.
◆ The Alarm LED lights.
◆ The Thermolator continues operating.
◆ The control displays a red LED or alarm code indicating the
source of the problem.
Alarm
The SPI communica-
tion link has failed.
Possible cause
Is the unit connected to a
host machine?
Are the network address
and baud rate correct?
Is something wrong with
the cable?
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.
❒ 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.
❒ 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.
SPI Communication