Thermo Scientific ThermoFlex10000

Questions and Answers

V
Vincent RobertsonAug 8, 2025
How to troubleshoot a Thermo Scientific Chiller that will not start?
- D
  Dawn ReedAug 8, 2025
  If your Thermo Scientific Chiller won't start, begin by inspecting the electrical connections. If it's the first time you're using it, refer to the quick start instructions. Check the controller for any error codes. Also, make sure the optional GFCI breaker on the rear is in the up position. For ThermoFlex900 - 10000 chillers, ensure the circuit protector is in the on ( I ) position. Confirm that the supply voltage is connected and matches the chiller's nameplate rating ±10%. If there's no display or it shows 8888 on ThermoFlex900 - 10000, try recycling the circuit protector on the rear.
K
kelleyrobertAug 29, 2025
How to fix inadequate temperature control on a Thermo Scientific Chiller?
- J
  Jeffrey EdwardsAug 29, 2025
  To address inadequate temperature control in your Thermo Scientific Chiller, start by verifying the setpoint. If the chiller is over-cooling, recycle the power. Ensure the condenser/air filter is free of dust and debris, and confirm the chiller installation complies with site requirements. Check that the supply voltage matches the chiller's nameplate rating ±10%. For ThermoFlex900 - 5000 global voltage chillers, make sure the chiller is properly configured. If the temperature continues to rise, ensure your application's heat load does not exceed the rated specifications. Also, check for high thermal gradients and verify/adjust controller PID values.
P
Paige DiazNov 17, 2025
What to do if my Thermo Scientific ThermoFlex10000 shuts down unexpectedly?
- A
  Aaron LopezNov 18, 2025
  If your Thermo Scientific Chiller shuts down, first ensure that wasn't accidentally pressed. Check that the optional GFCI breaker on the rear is in the up position and, for ThermoFlex900 - 10000 chillers, that the circuit protector is in the on ( I ) position. Examine the controller for error codes. Remember the chiller is designed to shut down if not properly primed. Confirm the supply voltage matches the chiller's nameplate rating ±10%, and then restart the chiller. If there is inadequate pump pressure, ensure any user installed in-line valves are in the desired position. Also, ensure the chiller’s process fluid outlet is connected to the application’s fluid inlet and not the application’s fluid outlet. All connections should be secure, using the proper sealant/lubricant for the fitting ...

Summary

Preface

Warranty

Details on the 24-month warranty for ThermoFlex chillers, excluding specific pumps.

Out of Box Failure

Definition and procedure for handling products that fail to operate at initial power up.

Section 1 Safety

Safety Warnings and Symbols

Explanation of safety precautions, DANGER, WARNING, CAUTION, and symbol meanings.

General Safety Instructions

Guidelines on operating, maintenance, and handling procedures to ensure safety.

Section 2 General Information

Specifications

Technical specifications for various ThermoFlex models including temperature, capacity, and dimensions.

Section 3 Installation

Site Requirements

Environmental conditions for chiller installation: ambient temperature, humidity, altitude, pollution.

Electrical Requirements

Guidelines for electrical connections, grounding, and compliance with National Electrical Code.

Hard Wire Installation

Procedure for hard-wiring chillers, including electrical box cover removal and ground wire connection.

Plumbing Requirements

Guidelines for connecting process fluid and facility water lines, including approved fluids.

Process Fluid Requirements

Information on approved process fluids, including warnings and handling precautions.

Compatibility with Approved Fluids

Details on approved fluids: filtered water, chlorine, deionized water, and recommended biocides/inhibitors.

Facility Water Requirements

Priming

Procedure for priming the chiller and process fluid lines before initial operation.

Initial Filling

Instructions for filling the reservoir with process fluid, including reservoir cap and sight tube.

Section 4 Operation

Basic Controller

Setup

Instructions for initial setup, referring to quick start guide and checking connections.

Start Up

Procedure for powering on the chiller, including circuit protector and controller initialization.

Controller Loops

Setpoint Loop (SP)

Procedure for displaying and changing the chiller's setpoint temperature.

Setup Loop

Guide to adjusting controller settings like scales, alarms, fan speed, and auto restart.

Shut Down

Procedure for safely shutting down the chiller, including compressor protection and circuit protector.

Section 5 Options;Accessories

Auto Refill

Emergency Off (EMO)

Operation and function of the emergency off button for immediate shutdown.

Lockout;Tagout (LOTO)

Procedure for energy source isolation before chiller maintenance using LOTO.

Section 6 Preventive Maintenance

Preventive Maintenance Timer (CArE)

Description of the integrated timer that alerts users for air and fluid filter changes.

Reservoir Cleaning

Fluid Maintenance

Condenser Filter

DI Filter (Optional)

Diagnostic Loop

Testing the Alarm Features

Procedure for testing chiller alarms by adjusting setpoints and simulating conditions.

Section 7 Troubleshooting

Error Codes

Table listing error codes, reactions, causes, and recommended actions for troubleshooting.

HiFLo

Hi P1

Hi t

HPC

LLF

LoFLo

Lo P1

Lo t

o FLo

oL

oL 2

PHEr

rEFiL

Er 22

Er 28

Er 30

Er 33

Er 35

Er 36

Checklist

Troubleshooting checklist for 'Chiller will not start' and 'No display' issues.

Chiller Shuts Down

Troubleshooting steps when the chiller shuts down unexpectedly.

Inadequate Pump Pressure

Troubleshooting steps for low pump pressure, including checking valves and connections.

Chiller Will Not Circulate Process Fluid

Troubleshooting steps when the chiller does not circulate process fluid.

Inadequate Temperature Control

Troubleshooting steps for temperature control issues, including setpoint verification and PID values.

Verifying;Adjusting Controller PID Values (Tune Loop)

Procedure for verifying and adjusting the controller's PID values to correct temperature control issues.

Section 8 Additional Information

Internal Fluid Temperature Sensor (rdt1) Calibration

Procedure for calibrating the internal fluid temperature sensor.

Process Fluid Pressure (P1) Transducer Calibration

Procedure for calibrating the process fluid pressure (P1) transducer.

Optional Process Fluid Flow Transducer (FLo) Calibration

Procedure for calibrating the optional process fluid flow transducer (FLo).

Clearing SEr Codes

Decommissioning;Disposal

Guidelines for safe decommissioning and disposal of the chiller.

Appendix C Analog I;O and Remote Sensor

Analog Input Calibration

Procedure for calibrating the analog input voltage/current for the controller.

Analog Output Calibration

Procedure for calibrating the analog output voltage/current for the controller.

Remote Sensor Calibration

Procedure for calibrating the remote temperature sensor.

Appendix D NC Serial Communications Protocol

Serial Communications Settings

Warranty

Thermo Scientific ThermoFlex10000 Specifications

General

Temperature Stability	±0.1°C
Pump Type	Centrifugal
Fluid Compatibility	Water, Water/Glycol
Power Requirements	400V, 50/60Hz, 3-phase
Flow Rate	Up to 60 L/min (15.9 GPM)
Power Supply	400V, 50/60Hz, 3-phase
Temperature Range	5°C to 40°C