MTA TAEevo121 - User Manual

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Painting systems & machines

2FC IMPIANTI SRL

Via G. Marconi 20/1

35010 Villanova di CSP (PD) - Italia

Water chillers

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1.5.1 Water chillers

Table of Contents

Questions and Answers

F
fjonesAug 17, 2025
Why is the MTA TAEevo121 tank water outlet temperature higher than expected?
- R
  Roy JohnsonAug 18, 2025
  The tank water outlet temperature (BTWOT) in your MTA Chiller might be higher than expected due to several reasons. It could be that the thermal load is too high, in which case you should restore it to the preset limits. Alternatively, the ambient temperature might be too high; if the unit is in a closed space, try increasing the airflow to lower the ambient temperature. Also, check if the condenser fins are dirty and clean them if necessary. Make sure the front surface of the condenser isn't obstructed. A lack of refrigerant or compressor protection trips could also cause this issue; in these cases, get a technician to check for leaks and refill the system.
K
Kristen MillerAug 20, 2025
What to do if the high pressure switch tripped (HP) on my MTA TAEevo121 Chiller?
- D
  Daniel JonesAug 20, 2025
  If the high pressure switch on your MTA Chiller has tripped, it could be due to several reasons. First, check if the fan is working; if not, repair or replace it. Also, high ambient air temperature can cause this, so ensure adequate ventilation. Recirculation of warm air due to incorrect installation can also be a factor; reposition the unit to avoid this. Dirty condenser fins or an obstructed condenser surface can also cause the high pressure switch to trip, so clean them if necessary. Finally, a thermal load that is too high can also cause the issue; reduce the load if possible.
S
Stacie CastilloAug 22, 2025
What causes compressor protection trips on the MTA TAEevo121 Chiller?
- T
  Tyler HoldenAug 22, 2025
  Compressor protection trips on your MTA Chiller, indicated by alarm A09 or A10, can occur due to a high thermal load combined with a shortage of refrigerant. In this case, it's best to call a qualified refrigeration engineer to check for leaks and replenish the refrigerant. For three-phase units, an incorrect rotation direction of the scroll compressor can also cause this issue; if this is the case, invert two phases of the power supply.
W
westmadelineAug 25, 2025
Why is the low pressure switch tripping on my MTA Chiller (Alarm A02)?
- M
  mcdanielsuzanneAug 26, 2025
  If the low pressure switch is tripping on your MTA Chiller, indicated by alarm A02, it could be due to a lack of refrigerant. In this case, it's recommended to call a qualified refrigeration engineer to check for leaks and replenish the refrigerant charge. Another possible cause is a dirty filter upstream from the unit. If a filter is installed, try cleaning or replacing it.
P
Philip EvansAug 27, 2025
How to fix a water differential pressure switch FLOW alarm (A08) on an MTA TAEevo121 Chiller?
- S
  Scott ContrerasAug 27, 2025
  A water differential pressure switch FLOW alarm (A08) on your MTA Chiller can be triggered by several issues. If a filter is installed upstream from the unit, it might be obstructed and needs cleaning. Also, the pump could be defective or rotating in the wrong direction (for three-phase supplies); check the pump's electrical supply and invert two phases if necessary. Another possibility is that the water inlet and outlet are inverted (for units without a hydraulic kit); if this is the case, invert them.
S
Stephanie MartinezAug 30, 2025
Why is there low water pressure at the pump outlet of my MTA TAEevo121 Chiller?
- L
  linda94Aug 30, 2025
  A low pressure drop (water pressure) at the pump outlet of your MTA Chiller can be caused by a water flow that is too high, indicating incorrect pump operation. Reduce the water flow to within the preset limits, for example, by partially closing a pump outlet cock. Reset the pump thermal protection and check the electrical absorption. The evaporator may also be obstructed due to dirt transported by the water. Depending on the type of dirt, clean the evaporator by running a detergent solution (that is not aggressive for steel, aluminum, and copper) or run a high water flow against the stream. Consider installing a filter upstream from the unit to prevent future issues.
C
Catherine JamesSep 2, 2025
What causes the A08 pump thermal protection alarm on my MTA TAEevo121 Chiller?
- U
  uwhitakerSep 2, 2025
  The A08 pump thermal protection alarm on your MTA Chiller indicates that the pump's thermal protection device has tripped. This can happen if the water flow is too high; try resetting the thermal protection device and increasing the pressure drop in the hydraulic circuit, perhaps by partially closing the pump output valve. Another cause could be an obstructed grille through which the pump cooling air passes; reset the thermal protection device and free the grille. The pump itself could also be defective; in this case, reset the thermal protection device and replace the pump.
M
martinblakeSep 4, 2025
What should I do if the digital display and LEDs are off on my MTA Chiller?
- N
  Nicole TaylorSep 4, 2025
  If the digital display and all LEDs are off on your MTA Chiller, even though the main switch is on, the auxiliary circuit fuse may have tripped. Check the causes of the fuse tripping and replace the fuse. It could also be due to abnormal power consumption by one or more of the control board components. Try turning the unit off and on again. If this doesn't solve the problem, contact the nearest service center.
T
timothy78Sep 7, 2025
What does alarm A04 mean on my MTA TAEevo121 Chiller and how do I fix it?
- M
  Matthew MccoySep 7, 2025
  Alarm A04 on your MTA Chiller indicates a low water outlet temperature. This can happen if the value set by the parameter is lower than the temperature measured by the probe. Identify and remove the cause that provoked the BTWOT temperature decreasing to a value lower than Ar03. It can also be caused by too low water flow. Increase the water flow to resolve this.
S
Samantha AdamsSep 9, 2025
What does it mean if my MTA Chiller displays alarm P1, P2, P3, or P4?
- H
  Heather ZimmermanSep 9, 2025
  If your MTA Chiller displays alarm P1, P2, P3, or P4, it indicates that the probe BEWOT, BTWOT, or BAT1 is damaged. Check that the temperature probe is correctly connected to the control board terminals and that the cable is undamaged. If necessary, replace the probe.

Summary

GENERAL INFORMATION

1.1 How to interpret the mode

Explains how to understand the model designation and its components.

SAFETY

2.1 General

General safety precautions for handling and maintaining the unit.

2.2 Liquids of the user circuit

Discusses compatible liquids and precautions for user circuits.

2.3 Lifting and carriage precautions

Details safe procedures for lifting and transporting the unit.

2.4 Installation precautions

Outlines safety measures for unit installation.

2.5 Precautions during operation

Safety guidelines to follow during unit operation.

2.6 Maintenance and repair precautions

Safety advice for maintenance and repair activities.

2.7 Refrigerant gases

Information on refrigerant types and safety handling.

TECHNICAL DATA

3.1.2 Characteristics of pumps and of the fans

Details specifications for pumps and fans used in the units.

DESCRIPTION

4.2 Cooling circuit

Describes the refrigerant circuit and its components.

4.3 Compressors

Details the types and features of compressors used.

INSTALLATION

5.3 Antifreeze protection

Details on adding antifreeze for cold weather protection.

5.3.1 Operating limits

Specifies the operating limits for ambient and water temperatures.

5.4 Hydraulic connections

Instructions for making water circuit connections.

5.6 Electrical connections

ELECTRONIC BOARD

7.1 Display

7.2 Function of buttons

7.8 Programming by keyboard

Overview of parameter programming structure and levels.

7.8.1 Access to Pr1 parameters (User level)

7.8.2 How to modify a parameters value

7.9 Values displayed

7.12 Function menu (M button)

Details how to access and use the function menu.

7.13 Other functions by keyboard

OTHER COMPONENTS SETTING

8.1 Compressor integral protection (PI)

8.2 Refrigerant high and low pressure switches

Explains the function of high and low pressure switches.

8.3 Compressor operation

8.4 Fan speed regulation

8.5 Level sensor

OPERATION AND MAINTENANCE

9.2 Maintenance

General guidelines and safety for maintenance procedures.

9.5 Maintenance schedule

A table outlining recommended maintenance tasks and frequencies.

TROUBLE SHOOTING

SETTING TABLES

11.1 Parameter setting

Guide to modifying adjustable parameters.

11.1.1 Thermoregulation parameters

11.1.2 Configuration parameters

ALARMS

12.1 Alarm codes and actions

Lists alarm codes, their causes, actions, and reset procedures.

12.2 Outlet blocking

Table indicating which alarms affect specific components.

MTA TAEevo121 Specifications

General

Brand	MTA
Model	TAEevo121
Category	Chiller
Language	English

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