Emerson MINI-MATE2 Symptom Possible Cause Check Or Remedy Cooling cycle too, Short, Control pads

Page 71

 

 

Troubleshooting

 

 

 

Table 25 Troubleshooting

 

 

 

 

Symptom

Possible Cause

Check Or Remedy

 

 

 

Cooling cycle too

Sensor response delay too short

Increase sensor response delay. See 6.11 - Calibrate Sensors.

short

 

 

Display freezes

 

During period of low humidity, static electricity can cause the

 

control program to freeze or display incorrect information.

and control pads

Static discharge

Although this is unlikely, the control can be reset by cycling

do not respond

 

 

power from the disconnect switch.

 

 

 

 

 

Condensate

 

 

pump does not

Open or short circuit in wiring

Find open or short circuit and repair power to pump.

operate

 

 

Continuous

 

Temperature display will indicate dashes. Check wiring from

Failed temperature sensor

temperature/humidity board (remote sensors) to the control

Cooling

board or from control board to wallbox. Replace

 

 

 

temperature/humidity circuit board (remote sensors) or wallbox.

 

 

 

Continuous

 

 

Heating

Shorted wiring or failed control

Check wiring and/or replace control board.

Dehumidification

board

 

Humidification

 

 

 

 

 

 

 

Review 5.4.4 - Electrical Connections. Verify VDC between 5

 

 

to 6 Volts at TB-3 Pin 1 (Ground) and TB-3 Pin 2 of the control

 

 

board and wall box. If the transmit lines (TB-3 Pin 3 & 4) are not

 

 

connected, only the POWER LED will be lit. It will flash once

 

 

every 10-12 sec. If T- is connected, but not T+, TX1 will flash

 

 

approximately every 2-3 sec. And the POWER LED will flash

Display Problem

 

once every 10-12 sec. If T+ and T- are reversed, the POWER

Incorrect wiring

LED and RX1 Will be lit and flash every 10-12 sec.

 

 

NOTE: Erratic operation of the unit could occur. If no LED is lit,

 

 

there is no power or the +5VDC polarity is reversed. If any of

 

 

these conditions occur, remove power from the evaporator using

 

 

the disconnect switch, and correct wiring from the control board

 

 

to the wall box.

 

 

NOTE: It may take up to 20 seconds for the display to appear on

 

 

the wall box LCD after power is applied.

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Liebert® Mini-Mate2™

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Contents Liebert Mini-Mate2 Page Table of Contents System Performance Microprocessor Controls Microprocessor ControlSystem OPERATION, Testing and Maintenance AlarmsTables Important Safety Instructions Liebert Mini-Mate2 Air-cooled systems-indoor centrifugal condensing units Product Model InformationPFH 0 67 a a L System configurations-50 Hz System configurations-60 HzIntroduction Chilled Water Units Standard FEATURES-5 TON SystemsEvaporator Section-Split System Condensing Unit Section-Split SystemSystem Controls Other Standard Control FeaturesSensors Switches and MotorsReheat HumidifierFree-Cooling Optional Configurations-Prop Fan Condensing UnitsOptional Configurations-Water/Glycol Condensing Units Optional Configurations-Chilled Water Units SHIP-LOOSE ACCESSORIES-FIELD-INSTALLED Ship-Loose Accessories-Field-Installed Room Preparation Installation ConsiderationsSite Preparation and Installation Air-cooled systems Location ConsiderationsCooling Units Ceiling Unit WeightsUnit weights Cooling DrycoolerEvaporator Air Distribution Filter Box Installing the Ceiling UnitsClose Coupled Installations Equipment Inspection Upon ReceiptEvaporator external static pressure Connections for Ducted SystemsPiping Connections and Coolant Requirements Drain Line Humidifier Water Supply LineCopper Pipe Recommended refrigerant line sizesEquivalent lengths for various pipe fittings, ft m Equivalent Pipe Liquid Suction Length, ft mVertical fall below evaporator Pipe length and condenser elevation relative to evaporatorVertical rise above evaporator/maximum Line charges refrigerant per 100 ft m of Type L copper tube Total refrigerant = Units and LinesQuick Connect Fittings Refrigerant chargeDPN000218 Electrical Connections Threaded rod and hardware kit installationControl Connections Power ConnectionsEvaporator unit electrical connections Close coupled installation Considerations for Specific Applications Piping ConnectionsDucting General ConsiderationsAIR-COOLED Dimensional Data AIR Cooled AIR-COOLED Model # 60Hz 50Hz Outdoor Air-Cooled Condensing Unit InstallationWeight, lb kg Rev Regulating Valve Water/Glycol Piping ConsiderationsCondensing Unit Fluid Requirements WATER/GLYCOL Dimensional Data WATER/GLYCOL DPN000214 Optional free-cooling coil 3-way valve on water/glycol units Hot Water Reheat CoilChecklist for Completed Installation Microprocessor Control Feature OverviewSetpoints Main Menu MenuDate Active AlarmsStatus Time2 C/F Degrees Setup OperationRestart Time Delay Show DIP SwitchCalibrate Sensors Change PasswordsSetup functions, default values and allowable ranges Function Default RangeAlarm default time delays Alarm EnableAlarm Time Delay Common Alarm EnableLCD Display Contrast Custom AlarmsStandard Custom Alarm Messages Custom TextSwitch settings wall box board Run Diagnostics Available On Rev 1.001.0 and higherEquipment Options Switches Equipment switch settings unit control boardTest Control Board Test OutputsControl menu Wall box board Control board-inside evaporatorSystem Performance Microprocessor Controls Temperature ControlHumidity Control Communications Load Control FeaturesHumidification Operation High Head Pressure Alarms Definitions and TroubleshootingAlarms Custom AlarmsAir-Cooled Systems TemperatureHumidifier Problem Alarm High Water AlarmOptional/Custom Alarms System OPERATION, Testing and Maintenance System TestingMaintenance and Component Operation Refrigeration System Blower SystemAir Distribution Blower RemovalAir-Cooled Condensing Units Glycol Solution MaintenanceDischarge Pressure Thermostatic Expansion ValveHot gas bypass Hot Gas BypassElectrical Failure Replacement ProceduresCompressor Replacement Mechanical FailureReplace a Failed Compressor Steam Generating Humidifier-Operation Procedures Amps Humidifier Circuit Board AdjustmentsHumidifier control board DIP switch settings Replacing the Humidifier CanisterMaintenance Inspection Checklist Troubleshooting TroubleshootingDisplay freezes Symptom Possible Cause Check Or Remedy Cooling cycle tooDisplay Problem ShortCare Ne tPpor t Is t Twor k

MINI-MATE2 specifications

The Emerson MINI-MATE2 is a cutting-edge temperature and pressure monitoring device specifically designed for the needs of the refrigeration and HVAC industries. Known for its reliability and user-friendly interface, this compact unit serves as a key tool for technicians and facility managers looking to optimize system performance while ensuring compliance with safety standards.

One of the main features of the MINI-MATE2 is its advanced digital display, which allows users to easily monitor and interpret temperature and pressure readings in real-time. Its highly responsive sensors ensure accurate data collection, vital for maintaining optimal operating conditions. Moreover, the device supports a wide range of refrigerants, making it versatile for different applications, from walk-in coolers to commercial refrigeration systems.

The MINI-MATE2 utilizes state-of-the-art technology to enhance efficiency and performance. Equipped with Bluetooth connectivity, it allows for wireless communication with mobile devices, enabling technicians to track readings and receive alerts remotely. This feature not only improves convenience but also helps in quick decision-making, ensuring timely interventions when anomalies are detected.

Another significant characteristic is its robust construction. Built to withstand harsh environments, the MINI-MATE2 features a durable casing that protects it from physical impacts and environmental factors. This resilience ensures longevity, making it a cost-effective investment for any facility.

In addition, the MINI-MATE2 is designed with user-friendliness in mind. Its intuitive interface means that even technicians with limited experience can easily navigate its functionalities. Quick setup and straightforward operation allow for rapid adoption and extensive use in a variety of settings.

Finally, the MINI-MATE2 also includes built-in data logging capabilities. Users can record historical data for analysis and reporting purposes, which is essential for performing trend analysis and identifying potential issues before they escalate. By providing a comprehensive overview of system performance, the MINI-MATE2 empowers users to make informed decisions that can lead to improved energy efficiency and reduced operational costs.

Overall, the Emerson MINI-MATE2 is an indispensable tool for modern refrigeration and HVAC applications, combining cutting-edge technology, user-friendly design, and essential features to support efficient system management.
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