Specifications

UGH015/0100 Thermolator TW-1 and TW-2
TROUBLESHOOTING 6-3
A status light
that turns from
green to red
indicates an
alarm condition.
Most Thermolator malfunctions are indicated by an illuminat-
ed alarm light and error codes displayed on the control panel.
A problem can trigger three types of alarms:
●●
Shut Down Alarms: The Thermolator detected a problem
that caused it to shut down automatically to prevent equip-
ment damage or personal injury.
●●
Warning Alarms: The Thermolator continues to operate,
but warns of a problem that could lead to a condition that
will shut down the unit.
●●
System Errors: The system error codes indicate a non-
recoverable problem with the microprocessor control.
When the Thermolator control detects a problem, the red
Alarm light is activated and the RUN/STOP light changes
from green to flashing red.
When an Alarm condition occurs:
Press to silence any optional audible
alarm.
◆ The RUN/STOP light changes from flashing red to
steady red.
Note any indicator lights or error messages to
help determine the cause of the problem.
Find the alarm or error code in the diagnostics
tables
in the TROUBLESHOOTING section of this manual.
Press to clear the alarm and shut down
the Thermolator to correct the problem.
Press to resume normal operation after
the problem is corrected.
HOW TO IDENTIFY
THE
CAUSE OF A
P
ROBLEM
1
2
3
Stop
WARNING:
Disconnect and lockout
the main power source
before opening the
Thermolator or its electri-
cal enclosure for servic-
ing. Disconnect air and
water supply lines as
needed.
4
Run