PolyScience Chiller User Manual

110-240 25
Troubleshooting
Many problems can be resolved by restoring the factory defaults. If this solves the problem, be careful when
restoring your operational settings in order not to repeat the problem.
To restore the factory default settings:
1. Place the Power Switch/Circuit Breaker on the rear of the unit in the OFF position.
2. Press and hold the Power Button on the front panel while returning the Power Switch/Circuit Breaker to
the ON position.
WARNING: Refer servicing to qualified service personnel.
WARNING: When electrical power is ON, dangerous voltages exist within chassis components. Use extreme
care when measuring voltages on live circuits.
Problem Possible Causes Corrective Action
Unit does not run
(digital displays blank)
No power to unit Check that the electrical cord is secure and connected to
an operating electrical outlet.
Check that Power Switch / Circuit Breaker on rear of unit
is ON.
Unit does not run
(three decimal points appear
on temperature display, two
decimal points on
pressure/flow rate display)
Unit in Standby mode Press Power Button on front panel.
No fluid circulation Insufficient fluid in reservoir
Blockage in circulating system
Pump is not operating
Add fluid to reservoir.
Remove blockage.
Replace pump.
Insufficient circulation Fluid viscosity too high
External tubing diameter too
small
Restrictions in fluid lines
Low line voltage
Replace with lower viscosity fluid.
Replace with larger diameter tubing.
Check and correct as required.
Check and correct as required.
Unit does not cool or cooling
is insufficient
Dust build up on air filter or
condenser
Blocked air ventilation screens
Excessive heat load
Ambient air temperature too
high
Low or high line voltage
Faulty temperature sensor
Clean air filter and/or condenser as required.
Remove blockages as required.
Check that heat load does not exceed capacity of chiller;
correct as required.
Decrease ambient air temperature.
Check and correct as required.
Check the compressor upper, evaporator inlet and
evaporator outlet temperature sensor readings (see
“Diagnostic Mode”). If any of these temperature readings
is -50°C, the sensor needs to be replaced.
Fault code 10 on display Extreme electrical line
interference
Triac failure
Plug unit into another power source. If problem persists,
triac has failed.
Replace triac or triac driver as required.

PolyScience Chiller Specifications

General

Brand	PolyScience
Model	Chiller
Category	Chiller
Language	English