6-14
I
Troubleshooting
Controller Control Fault Logic
Fault
Alarm Indication
Pump
Shut
Off
Heater
Shut
Off
Unit
Shut
Off
Alarm
Reset
Required
1
Manual
Reset
Required
2
Remote
Alarm
Activated
3
Low Coolant Inlet Pressure
The Coolant Pressure In Light flashes red
Yes
Yes
Yes
No
No
Yes
Temperature Limit Safety
The Set Point and Process Temperatures Flash
and the Temperature Limit Light flashes red
Yes
Yes
Yes
Yes
No
Yes
Temperature Limit Warning
The Temperature Limit Light flashes yellow
No
No
No
Yes
No
Yes
Pump Motor Overload
The Pump Light flashes red
Yes
Yes
Yes
Yes
Yes
Yes
Supply Probe Fault Hi
The Set Point Temperature Display shows
PRS
and the Process Temperature Display shows
EH
Yes
Yes
Yes
Yes
No
Yes
Supply Probe Fault Lo
The Set Point Temperature Display shows
PRS
and the Process Temperature Display shows
E
Yes
Yes
Yes
Yes
No
Yes
Return Probe Fault Hi
The Set Point Temperature Display shows
PRR
and the Process Temperature Display shows
EH
Yes
Yes
Yes
Yes
No
Yes
Return Probe Fault Lo
The Set Point Temperature Display shows
PRr
and the Process Temperature Display shows
E
Yes
Yes
Yes
Yes
No
Yes
Brownout
The Set Point Temperature Display shows
Brn
and the Process Temperature Display shows
Out
Yes
Yes
Yes
Yes
No
Yes
3-Phase Power Error
(Optional)
4
The Electrical Phase Error light flashes red
Yes
Yes
Yes
Yes
No
Yes
Heater Contactor Error
(Optional)
4
The Heat Error light flashes red
Yes
Yes
Yes
Yes
No
Yes
1
Pressing the Alarm Silence/Reset resets alarm.
2
A manual reset of the pump motor thermal overload is required to reset this alarm.
3
Activates the alarm horn and closes the alarm contact (optional).
4
Requires the Premium Controller option (TW-P).
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 ...