Conair Thermolator TW-1 User Manual page 77

The Thermolator has detected a problem that could lead to equip-
ment damage or personal injury if it is not corrected.
u The Alarm LED lights and the STOP/RUN LED flashes red.
u The Thermolator automatically shuts down.
u The control displays a red LED or alarm code indicating the
source of the problem.
Alarm
High Temp. Safety
The actual tempera-
ture of water
supplied to the
process exceeds the
260°F safety switch
limit.
WARNING:
Only qualified electri-
cal service personnel
should examine and
correct problems that
require opening the
unit's electrical
enclosure or checking
electrical current to
diagnose the cause of
a problem.
Hi SAF
The actual tempera-
ture of water
supplied to the
process exceeds the
programmed 260°F
safety limit.
WARNING:
Only qualified electri-
cal service personnel
should examine and
correct problems that
require opening the
unit's electrical
enclosure or checking
electrical current to
diagnose the cause of
a problem.
UGH025-0504
Possible cause
Water stopped flowing
through the unit or
between the supply and
return.
The optional electro-
mechanical safety switch
is improperly set or
defective.
The heater contactor has
failed.
Water stopped flowing
through the unit or
between the supply and
return.
The heater contactor
failed.
Thermolator TW Series
TW-1, TW-2
C
ONTROL
D
OWN
Solution
r Verify that the unit is running
and that the pump is work-
ing.
r Check for closed or defective
cooling or vent valves and
plugged lines. See Repairing
Solenoid Valves, Section 6.
Check the switch setting. A set-
ting that is too low will cause
nuisance trips. Check the switch
and replace if defective. See
Checking and Replacing
Switches, Section 6.
Replace the contactor if
defective. See Replacing the
Heater Contactor, Section 6.
r Verify that the unit is running
and that the pump is work-
ing.
r Check for closed or defective
cooling or vent valves and
plugged lines. See Repairing
Solenoid Valves, Section 6.
Replace the contactor if
defective. See Replacing
the Heater Contactor, Section 6.
T
ROUBLESHOOTING
S
HUT
A
LARMS
6-9