Technical information

Portable Chillers UGH024/11036-14 TROUBLESHOOTING
TIC CONTROL
ALARM
CONDITIONS
Alarm
High Temperature
Safety Temp >95 F
alarm
Possible cause
The hot gas bypass valve
is not working properly
(possibly stuck open)
Load is too high for the
chiller.
Fluid is not flowing
between the supply outlet
and return outlet.
The compressor is not
running.
Failed RTD or
Temperature Transmitter.
Solution
Shut isolation valve to the Hot
Gas Bypass solenoid. If the To
Process temperature starts to
go down, the solenoid valve is
faulty. Have a certified refrig-
eration technician replace the
solenoid valve.
Remove some load from the
process.
Check for plugged pipes,
closed valves, or failed flow
switch.
Check to see if Compressor
light is lit on the control. If it
is not, check compressor over-
load in compressor terminal
box. Check power to compres-
sor and power to compressor
contactor.
See Checking the Temperature
Transmitter and RTD in the
Troubleshooting section.