6-20
I
Troubleshooting
Unit Faults
The Thermolator has detected a problem with the internal components, wiring, electrical power, or operat-
ing environment. Without correction, the fault could lead to equipment damage or personal injury if it is
not corrected.
•
The controller displays an error code indicating the cause of the problem.
•
The TCU may take automatic control actions, based on the nature of the fault, to best protect the op-
erator and the TCU until the fault is corrected.
•
If the optional alarm package is installed, the fault strobe will illuminate and the audible alarm will
activate.
•
Some faults require a power cycle to reset.
Fault
Possible Cause
Solution
brn
Ut
Brownout
The TCU experienced a loss of
power while it was running.
Note:
This fault can be selectively
enabled/disabled in the user menu under
parameter
brn
.
WARNING:
Only qualified elec-
trical service personnel should
examine and correct problems
that require opening the unit’s
electrical enclosure or checking
electrical current.
u
ALARM LED illuminated.
u
Optional strobe, sounder,
dry contacts actuated.
u
Pump turns off.
u
Heater turns off.
u
Cooling valve closes.
Push the Fault Silence/Reset
button to reset this fault.
Did your facility experience a
power outage?
Ensure that no other connected
equipment has been adversely af-
fected by the power outage.
Push the Fault Silence/Reset but-
ton, and then push the Run button
to restart the TCU.
Is there a disturbance or volt-
age imbalance in your electrical
system?
Have a qualified electrician review
your facility wiring and electrical
power. Correct any issues so that
the voltage provided to the TCU is
as required.
(Continued)
(Continued)
Summary of Contents for Thermolator TW-P
Page 6: ...iv I Table of Contents ...
Page 12: ...1 6 I Introduction ...
Page 36: ...3 14 I ...
Page 58: ...4 22 I Operation ...
Page 72: ...5 14 I Maintenance ...
Page 128: ...E 4 I Appendix ...
Page 134: ...G 4 I Appendix ...
Page 136: ...H 2 I Appendix ...