Sollatek FreoCom FCA 3 Series User manual

A3 CMYK
Important: This manual contains important safety instructions. Before using this product please read
all instructions carefully. Keep this manual handy for reference.
FCAx3
Advanced Electronic Temperature Controller With Energy
Saving, Defrost, and Plug-in Connectivity Options
USER MANUAL

FCAx3 USER MANUAL
A3+ CMYK
2+44 (1753) 214 500
Please read the following warnings to maintain the safe function and continued performance of your Sollatek
device.
INSTALLATION
The mounting of the unit must be in accordance with orientation as specied in this manual. The device must only be installed
and congured by trained and authorized staff.
TEMPERATURE
The Sollatek device must only be subjected to temperatures as specied in this manual.
VIBRATION AND IMPACT
The device MUST be installed in such a way as to be protected from impact in operation. Do not hit or drop the device.
NO SERVICEABLE PARTS
There are no serviceable parts inside the device. Do NOT open the housing.
VOLTAGES
The Sollatek device must only be connected to power supplies that comply with the acceptable voltage ranges as specied in
this manual.
VOLTAGE FLUCTUATIONS AND SURGES
The Sollatek device has surge protection as specied in this manual. Exposure to surge voltages outside these limits, or
excessively repeated surges within the limits may cause damage to the electrical circuits.
CURRENTS
Outputs should not be connected to short circuits or to loads that exceed the currents as specied in this manual. Care must be
taken to ensure that cables and terminations are safely terminated.
SEGREGATION OF POWER AND SIGNAL CABLING
Correct segregation of power and signal cabling must be followed. Do not run power and signal cables together in the same
conduit. Induction from power cables may corrupt data signals, leading to incorrect operation.
CONSEQUENTIAL FAILURES
The Sollatek device includes features to protect both itself and connected components. However, failure of connected
components may cause damage to the controller and/or connected components. Critical or vulnerable components should be
protected independently against failure.
FIT FOR PURPOSE
The Sollatek device must only be used for the purpose and functions described in this manual. As each application requires a
different conguration and setup, no liability is accepted by Sollatek UK Ltd for the correct operation of the nal equipment.
Failure to comply with the warnings may result in the device becoming damaged leading to
premature failure or unsafe operation. In extreme cases failure to comply may cause a risk
of electrocution or re.

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SAFETY PRECAUTIONS
Precautions should be taken when installing or disconnecting the device. Isolate the power supply
before installation or servicing.
Trained and Authorised personnel only should install/service this equipment.
THE DANGERS OF ELECTRICITY
Harm can be caused to any person when they are exposed to ‘live parts’ that are either touched directly or indirectly by means
of some conducting object or material. Voltages over 50 volts AC or 120 volts DC are considered hazardous.
Most electrical accidents occur because of individuals:
1. Are working on or near equipment, which is thought to be dead, but which is, in fact, live.
2. Are working on or near equipment, which is known to be live, but where those involved are without adequate training or
appropriate equipment, or they have not taken adequate precautions.
3. Misuse of equipment or use of electrical equipment which they know to be faulty.
REDUCING THE RISK OF ELECTRIC SHOCK
To reduce the risk of electric shock:
1. Install the device in an area free of conductive contaminants. The ambient temperature must not exceed 60°C.
2. Isolate the power to the device before installation, repair, or removal.
3. Use tools with insulated handles.
FIRST AID
Before commencing any work:
1. Find out the location of a suitably stocked rst aid box.
2. Find out the arrangements that exist on-site for rst aid, and who is responsible for taking charge of these.
DISPOSAL
Sollatek devices are subject to the EU directive 2012/19/EU and may also be subject to other national legislation for
the safe disposal of e-waste.
1. The device cannot be disposed of as municipal waste, and such waste should be collected and disposed of
separately.
2. The device can be disposed of through an approved WEEE collection point, or alternatively can be returned to
Sollatek UK Ltd at the end of its working life.
3. The device may contain hazardous substances, which if disposed of incorrectly may cause harm to the
environment and/or human health.
4. Penalties may be applicable for incorrect disposal, as specied by local legislation.
Sollatek devices comply with EU directive 2011/65/EU (RoHS).

FCAx3 USER MANUAL
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4+44 (1753) 214 500
CONTENTS
1. INTRODUCTION 5
1.1 DESCRIPTION 5
1.2 MODEL VARIANTS 5
1.3 LED INDICATORS 6
2. FUNCTION 7
2.1 TEMPERATURE CONTROL 7
2.2 ENERGY SAVING 7
2.3 DEFROST CONTROL 7
2.4 VOLTAGE AND COMPRESSOR PROTECTION 7
3. OPERATION 8
3.1 STANDARD REGULATING MODE 8
3.2 DEFROST MODE 10
3.3 ENERGY SAVING MODE 11
4. FEATURES 12
4.1 TEMPERATURE BLIND TIME 12
4.2 BAD VOLTAGE BLIND TIME 12
4.3 TIMESAVE™ FUNCTION 13
4.4 INTELLIGENT TIME DELAY 13
4.5 INTELLIGENT BLACKOUT TIME DELAY 14
4.6 TEST PINS 14
4.7 DIAL POSITION & CONTROLLER OFF 14
4.8 BLUETOOTH CONNECTIVITY 14
4.9 CONNECTIVITY DEVICE 15
4.10 DIGITAL DISPLAY MODULE 15
5. INSTALLATION 16
5.1 FCAx3 DIMENSIONS 16
5.2 MOUNTING INSTRUCTIONS 16
5.3 WIRING CONNECTIONS 16
6. TESTING PROCEDURE 18
6.1 THERMOSTATIC FUNCTION 18
6.2 DEFROST FUNCTION 18
6.3 VOLTAGE PROTECTION FUNCTION 19
7. ALARMS & ERRORS 20
7.1 FREQUENCY MONITORING & ERROR DETECTION 20
7.2 REGULATION PROBE ERROR DETECTION 20
7.3 DEFROST PROBE ERROR DETECTION 21
7.4 INTERNAL FAULT DETECTION 21
8. CONFIGURATION 22
8.1 DESKTOP CONFIGURATION 22
8.2 REMOTE CONFIGURATION 24
9. PROGRAMMING 25
10. PARAMETERS 27
10.1 HARDWARE CONFIGURATION 27
10.2 RELAY CONFIGURATION (RELAY #2/#3) 27
10.3 TEMPERATURE CONTROL 29
10.4 ENERGY SAVING (TEMPERATURE SET-BACK) 31
10.5 DELAYS AND TIMERS 31
10.6 DEFROST FUNCTION 32
10.7 VOLTAGE PROTECTION 35
10.8 DOOR SWITCH OPERATION 35
10.9 HEATER FUNCTION 36
10.10 PROBE FAULT DETECTION (PROBE #1/#2/#3) 36
11. SPECIFICATION 37
12. ACCESSORIES 39
13. VERSION HISTORY 39

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1. INTRODUCTION
1.1 DESCRIPTION
The FCAx3 is an electronic refrigeration controller designed to be a direct replacement for electro-mechanical thermostats
to provide precise and efficient refrigeration control for up to 3 outputs using up to 3 inputs (temperature sensor and/or door
switch). The FCAx3 provides advanced defrost modes as well as energy saving during periods of low demand using a door
switch.
The FCAx3 is built to last meeting industry benchmarks and offering complete voltage protection including high/low voltage
to all connected outputs. To also help protect and extend the operating life of the connected outputs the FCAx3 provides zero
voltage crossing.
The FCAx3 has internal Bluetooth (optional) or can be connected to an external Bluetooth module (GBR) allowing remote
access via the Smart Device App to authorized service personnel to access controller data logs and control parameters. BLE also
transmits Eddystone and iBeacon for proximity marketing (nearby customer engagement).
The FCAx3 can be connected to a connectivity device to provide always-on connectivity to send telemetry and performance
data to the portal, and Wi-Fi asset location or a digital display to provide live temperature reading, parameter and mode
configuration and alarms/errors.
DEVICE OVERVIEW
2
3
4
5
6
7
8
9
1
D
L
O
C
E
R
OFF
1Mains and Output Connectors
2User Adjustable Temperature Dial
3Data Port - Connectivity / Programming
4Test Pins - Time Delay Bypass
5LED Indicator
6 Temperature/door Sensor Connector
7Temperature Sensor Connectors
1.2 MODEL VARIANTS
The “x” in the part number FCAx3 indicates the number of controllable outputs. There are three models available:
FCA13 = 1 relay, 16 Amp (Compressor)
FCA23 = 2 relays, 16 Amp (Compressor) + 5 Amp (Aux1)
FCA33 = 3 relays, 16 Amp (Compressor) + 2x 5 Amp (Aux1 & Aux2)

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1.3 LED INDICATORS
Dial in “OFF” position
Test Mode
Blink Once. Probe #1 Fault.Compressor Off or Cycling
*
LEDs Mains Voltage Compressor Description
R Y G
Off. Voltage Bad. Cooling Demand
Wait Period (intelligent time delay). Cooling Demand
On. Voltage Good. Cooling Demand
*
Defrost Mode
Blink Twice. Probe #2 Fault.Compressor Off or Cycling
*
If the Red LED turns ON momentrily, the controller is in under/over voltage blind time
On. Compressor Off due to Door Switch Operation
*
Wait Period. No Cooling Demand
Wait is Over. No Cooling Demand
KEY On/good Off/bad Flashing (1 second interval) Cycling (1 second interval) OffBlink (2 seconds interval)On
Blink Three Times. Probe #3 Fault.Compressor Off or Cycling
*
*
Cycle every 0.5 seconds. Bad Frequency
Pre-defrost Mode
Drip Down Mode
Post Defrost Recovery Mode
Not Relevant
Off. Voltage Bad. No Cooling Demand
Blink Once. Probe #1 Fault and Bad Voltage
Blink Twice. Probe #2 Fault and Bad Voltage
Blink Three Times. Probe #3 Fault and Bad Voltage
Cycle 5 times a second. Internal Power Supply Failure

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2. FUNCTION
2.1 TEMPERATURE CONTROL
The FCAx3 is a microprocessor-based temperature controller utilising up to two NTC (Negative Temperature Coefficient)
probes. The cooler temperature is determined by measuring the temperature of either the return airflow or evaporator
temperature depending on where the customer prefers to fit the probe. This probe should be connected to the probe #1
connector.
The FCAx3 is a closed-loop temperature controller, turning the compressor OFF once the Cut-out set point has been reached
and then turning the compressor ON when the Cut-in temperature is reached. Users can set both the cut-in and cut-out values.
2.2 ENERGY SAVING
Commercial refrigeration is energy-hungry; With rising energy costs and growing environmental concerns, the FCAx3 allows
you to reduce energy consumption. You can:
• Cycle the Evaporator Fan: set the fan to cycle during operation as opposed to ON all the time.
• Temperature Setback Mode: Reduce the cooling demand by increasing the set temperature values. This will reduce how
hard the compressor must work and therefore reduce energy.
The setback is designed to be initiated when the store is closed. To activate Setback there must be no door activity for a
configurable set period.
2.3 DEFROST CONTROL
One of the primary functions of the FCAx3 controller is defrost management. The defrost cycle can be initiated or terminated
by either time or temperature (active).
Every system is different but usually, for the most efficient and satisfactory refrigeration operation, you would set the controller
parameters to initiate the fewest amount of defrosts in a day, for the shortest amount of time needed to clear the evaporator
of ice.
Usually, parameters will be set to terminate due to temperature with a fail-safe time backup to prevent prolonged defrost
because of defective defrost components or failures.
The FCAx3 supports Natural or Forced Defrost:
• Natural Defrost turns off the compressor and allows the evaporator to warm up normally.
• Forced Defrost turns the compressor and evaporator fan off and then turns a reverse fan to warm up the evaporator
quicker than natural defrost.
Standard operation during Defrost:
Natural Defrost Forced Defrost
Compressor: OFF Compressor: OFF
Evaporator Fan: ON Evaporator Fan: OFF
Reverse Fan or Heater: ON
2.4 VOLTAGE AND COMPRESSOR PROTECTION
The FCAx3 has built-in voltage protection including High / low voltage, spikes/surges, and frequency monitoring to protect
the controller and connected outputs to reduce equipment damage and downtime. The FCAx3 continually senses the mains
supply, on sensing bad voltage (voltage is higher or lower than the present acceptable limits) the FCAx3 will disconnect the
compressor and other connected outputs. Once the voltage becomes good, the FCAx3 will ensure the voltage remains good
for a set period (TIMESAVE™) before reconnecting power to the compressor and other connected outputs.
A minimum OFF period is essential in allowing compressor gases to neutralise, ensuring that the mains have stabilised before
re-connection and avoiding a locked rotor condition, however, any prolonged off time can affect cooler efficiency and or the
contents of the cooler. The FCAx3 will automatically adjust the reconnection period meaning the cooler will never be off for
longer than required.

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3. OPERATION
3.1 STANDARD REGULATING MODE
ON
Time
Compressor
OFF
ON
Evaporator Fan
OFF
CUT IN
CUT OUT
Pull
down
HVD
LVD
Mains Voltage
ON
OFF
Defrost
Defrost Mode
HVD Disconnect
LVD Disconnect
Intelligent Time Delay Intelligent Time Delay
Temperature Probe

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3. OPERATION
3.1 STANDARD REGULATING MODE
ON
Time
Compressor
OFF
ON
Evaporator Fan
OFF
CUT IN
CUT OUT
Pull
down
HVD
LVD
Mains Voltage
ON
OFF
Defrost
Defrost Mode
HVD Disconnect
LVD Disconnect
Intelligent Time Delay Intelligent Time Delay
Temperature Probe

FCAx3 USER MANUAL
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3.2 DEFROST MODE
3.2.1 STANDARD DEFROST
Depending on the requirement, defrost can be triggered by either using the temperature or/and by time, when both settings
are enabled, whichever event happens first will trigger or end the defrost cycle.
The FCAx3 has a minimum defrost duration and minimum duration between defrost cycles which must be satisfied before
it will act no matter the status of the other parameters. This is to ensure the defrost cycle is not stopped too early or defrost
cycles are not initiated too close together.
3.2.2 ADVANCED DEFROST MODES
The FCAx3 has optional advanced pre- and post-defrost settings that provide extra protection to the controller and
compressor as well as maximising defrost efficiency.
Time
Pre Defrost
Mode
Defrost is activated
by temperature or
time
Defrost Mode Drip Down
Mode
Post Drip Down
Recovery Mode
Defrost ended by
temperature or
time
Aux 1 & 2
configurable
Aux 1 & 2
OFF
Aux 1 & 2
OFF
Aux 1 & 2
configurable
Compressor OFF during
ALL defrost modes
ON
OFF
Compressor
ON
OFF
Evaporator
Fan
ON
OFF
Defrost Relay
Post Drip Down
Recovery ended
by temperature
or time

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3.3 ENERGY SAVING MODE
The FCAx3 has an Energy Saving mode that provides reduced compressor operation when the outlet is closed and no
customer demand by setting the cut-in and cut-out temperatures higher than in normal mode. When the FCAx3 does not
sense a door opening for the pre-set duration, then the FCAx3 will enter Energy Saving Mode and run using the energy-saving
cut-in and cut-out temperature. When the door is opened or the maximum energy-saving timer has elapsed, the FCAx3 will
resume normal operation.
CUT IN
CUT OUT
Eco Mode
Temperature
Time
Engery Saving Max Duration
OPEN
CLOSE
Door Switch
Energy Saving Mode
Door Close Duration
to Start Energy Saving
Door Open Duration to Exit Engery Saving
Energy Saving is activated Energy Saving is terminated
CUT IN
CUT OUT
ON
OFF
Compressor
Normal Mode
Temperature

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4. FEATURES
4.1 TEMPERATURE BLIND TIME
The software will ignore the sensor temperature reading for the first few seconds (a pre-set value of 10 seconds) after the
compressor is switched on. This is to prevent short-term thermal effects such as those caused by the fan starting to operate
causing disconnection.
Cut in
Average
Cut out
On
O
Less than
Temperature
Blind Time
Temperature
Compressor
4.2 BAD VOLTAGE BLIND TIME
The software permits high and low mains voltages transitions for short periods of time preventing inadvertent compressor
stop-starts. Present values of 0.5 and 2 seconds (configurable) respectively are implemented.
However, if the mains voltage becomes too extreme (HVD + 10%) and (LVD - 20%), the FCAx3 will immediately disconnect the
compressor.
IDH
HVD
LVD
IDL
On
O
Intelligent time delay
Less than 0.5 secs
Less than 2 secs
Intelligent time delay
High limit
Low limit
Mains power
Compressor
IDH= Immediate Disconnect High
IDL= Immediate Disconnect Low

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4.3 TIMESAVE™ FUNCTION
The FCAx3 has a built-in sensing period after a bad voltage event. When the voltage returns to good after a bad voltage
period the FCAx3 will only reconnect power to the compressor and other connected outputs once it has sensed the voltage
remains within set limits for at least 10 seconds.
4.4 INTELLIGENT TIME DELAY
The FCAx3 controller has a built-in intelligent time delay of up to 5 minutes (customer configurable). After a compressor
disconnection period, either from cycling OFF, defrost, or HVD/LVD the FCAx3 will automatically adjust the time delay on
the disconnection period before allowing the compressor to turn ON. For example, if the Time delay is set to 3 minutes, a
2-minute disconnection will result in only a 1-minute additional delay, making the total delay 3 minutes. Any disconnection of 3
minutes or over and the FCAx3 will immediately turn the compressor ON.
The time delay is essential in allowing compressor gases to neutralise, ensuring that the mains have stabilised before
re-connection and avoiding a locked rotor condition.
Operation of time delays during normal operation:
Intelligent Time
Delay (1 min)
Disconnection Period
(2 mins)
Disconnection Period
(7 mins)
ON
OFF
Compressor
ON
OFF
Compressor
Operation of time delays during a brownout (bad voltage):
Intelligent Time
Delay (1 min)
Disconnection Period
(2 mins)
Disconnection Period
(7 mins)
ON
OFF
Compressor
ON
OFF
Compressor
Voltage GOOD Voltage BAD Voltage GOOD
TIMESAVE
™
TIMESAVE
™
Voltage GOOD Voltage BAD Voltage GOOD
*Above illustrations use intelligent time delay set to 3 minutes

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4.5 INTELLIGENT BLACKOUT TIME DELAY
The FCAx3 also has an Intelligent Blackout delay, meaning depending on the disconnection period, caused by no power i.e.
power cut or mains being turned off, the FCAx3 will adjust the wait period before allowing the compressor and other outputs
to turn on. For example, if the Time delay is set to 3 minutes, a 2-minute disconnection will result in only a 1-minute additional
delay, making the total delay 3 minutes. Any disconnection of 3 minutes or over and the FCAx3 will immediately turn the
compressor ON. Time delay is configurable (intelligent time delay and blackout time delay are set as the same value).
Intelligent Time
Delay (1 min)
OFF Period
(2 mins)
OFF Period
(7 mins)
ON
OFF
Compressor
ON
OFF
Compressor
Voltage GOOD Voltage BAD Voltage GOOD
TIMESAVE
™
TIMESAVE
™
Voltage GOOD Voltage BAD Voltage GOOD
4.6 TEST PINS
Next to the LED, the FCAx3 has two test pins. The test pins can be shorted by touching both pins with
a conducting object such as a small screwdriver.
When the FCAx3 is first turned ON and the test pins are shorted, the time delay is bypassed and will
force the FCAx3 to operate immediately according to the current temperature demand.
If the test pins are shorted during operation when there is no cooling demand, the FCAx3 will force the
compressor ON for 10 seconds to allow technicians to check the compressor operation.
4.7 DIAL POSITION & CONTROLLER OFF
The dial setting point on the FCAx3 is pointing downwards when the power/output connectors are on the left. When moving
the dial into or away from the OFF position the dial will click in and out respectfully.
When the dial is set to OFF and Enable Potentiometer Off Position is enabled, the FCAx3 turns off all outputs regardless of
the temperature, allowing forced defrost or cleaning. The outputs are enabled when the dial position is changed to any other
value.
2
3
4
5
6
7
8
9
1
D
L
O
C
E
R
OFF
Dial Setting Point
4.8 BLUETOOTH CONNECTIVITY (INTERNAL OR EXTERNAL)
FCAx3 controllers are equipped with Bluetooth capability, enabling them to connect to the Sollatek Smart device Application.
The Sollatek App has extensive cooler management capabilities providing technicians with all the tools to view and upload
controller status and event data.
• Real-time Data Analysis - View real-time telemetry data, operational status, and performance data.
2
3
4
5
6
7
8
9
1
D
L
O
C
E
R
OFF

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• Cooler Event Log - Access all historical data that has occurred between store visits to identify any issues or problems.
• Manage Settings and Parameters - View and configure predefined FCAx3 controller parameters for cooler optimisation.
Set BLE Beaconing protocols and event logging.
• Connect to the Cloud - Upload data to the cloud for access on the online portal for further analysis.
The FCAx3 controller also features iBeacon and Eddystone Beacon capabilities allowing proximity marketing to send engaging
and interactive content to consumers’ smartphones while they buy in real-time.
4.8.1 RECHARGEABLE BATTERY (INTERNAL BLUETOOTH MODEL ONLY)
The internal battery allows the FCAx3 to keep Real Time Clock (RTC) while there is no mains supply. The battery can also be
used to power the Bluetooth so the device can still advertise/beacon.
The battery will last approximately 15 days RTC / 10 days RTC + BLE Advertising.
CAUTION! RISK OF EXPLOSION
It is not recommended for users to replace the battery so please contact Sollatek. The replacement
battery should be of the same type.
Dispose of the used batteries according to national standards and directives.
4.9 CONNECTIVITY DEVICE (GMC4)
4.9.1 CELLULAR FEATURES
The GMC4 is equipped with cellular connectivity capabilities of 2G or Cat-M (depending on the model), enabling it to transmit
data over the secure global network for you to access on the online portal for cooler monitoring. The online portal can be
accessed on any device with an internet connection. The GMC4 is provided with a global roaming SIM pre-installed. Via the
online portal, you can:
• Detailed Reports - View a vast list of controller operational data such as temperature, event history, and faults.
• Intelligent Data Analysis - Monitor technical and operational data in easy-to-read graphs and charts.
• Accurate Sales Performance - view and analyse cooler KPIs for enhanced sales forecasting and strategy.
• Over the Air Parameter Configuration - View and configure predefined GMC4 controller parameters for cooler
optimisation
• Remote Cooler Shut-down - In the event the cooler is stolen, disable the cooler so it cannot be used. Once the cooler is
recovered the cooler can then be enabled.
The transmission interval of cooler health data can be configured via the Sollatek Smart Device Application. Health data will
not be transmitted while being powered by the battery.
4.9.2 GEO-LOCATION
The GMC4 provides Wi-Fi geo-location for precise asset tracking anywhere in the world. The GMC4 collects and sends Wi-Fi
signal strength and WAP information from nearby devices (without connecting to the Wi-Fi network). The system then uses the
leading Wi-Fi location database to determine the location of the GMC4 and cooler. The location can be seen on a dynamic
map on the portal.
• View current and historic cooler locations.
• Real-time tracking of cooler location during movement (depending on transmission interval set).
The transmission interval of Wi-Fi data is fully configurable via the Sollatek Smart Device Application.
4.10 DIGITAL DISPLAY MODULE
The FCAx3 can be connected to the Sollatek FDM3 digital display. This allows you to:
• View and configure controller status/mode.
• Configure pre-set parameters.
• View controller alarms and faults.

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5. INSTALLATION
5.1 FCAx3 DIMENSIONS
5.2 MOUNTING INSTRUCTIONS
WARNING!
FCAx3 MUST be mounted with terminals in an isolated area, either in a plastic or earthed metal case.
1. Mark and drill holes for the dial shaft and mounting
screws in the surface where the FCAx3 is to be mounted
according to the panel cut-out. Ensure all holes are free
of burrs and sharp edges.
2. Insert the FCAx3 dial shaft through the hole from the
rear of the panel.
3. align the mounting holes and secure the FCAx3 into
position with the provided screws.
4. Push the dial onto the shaft.
5.3 WIRING CONNECTIONS
DANGER! ELECTRIC SHOCK HAZARD - LIVE TERMINAL
This is a non-isolated product. The sensor inputs and outputs are not electrically isolated from the power terminals
therefore the supply MUST be disconnected from the controller before installing/disconnecting, repairing, or
programming the controller, inputs, outputs, and external devices.
Ensure exposed connectors/wires of connected inputs, outputs and external devices do not touch the frame or
chassis of the cooler or other enclosures otherwise, damage to the controller, equipment, and the cooler will occur.
This equipment is to be installed or serviced by trained personnel only.

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5.3.1 MAINS AND OUTPUT WIRING
DANGER! - LIVE TERMINAL
Isolate the supply before installing/disconnecting or repairing the controller. Failure to do so can result in damage
to equipment and electrical shock.
Ensure the connected load does not exceed the maximum relay rating it is connected to and the total current
rating on at once does not exceed 18 Amps (FCA22/FCA32).
0.25” vertical male spade terminals are used for mains and output connectors. Connections should be made with equivalent
female crimp connectors.
1. Connect the Mains Neutral wire to terminal 1 (labelled Neutral) on the FCAx3.
2. Connect the Mains Live-In wire to terminal 2 (labelled Live in) on the FCAx3.
3. Connect the Compressor Live wire to terminal 3 (labelled Comp) on the FCAx3.
4. Connect the required output (commonly evaporator fan) Live wire to terminal 4 (Relay #2,
labelled Aux1) on the FCAx3, if required.
5. Connect the required output (commonly Lights or heater) Live wire to terminal 5 (Relay #3,
labelled Aux2) on the FCAx3, if required (FCA32 ONLY)
6. Connect all output Neutrals to Mains Neutral.
Note: Output connectors are based on the default relay configuration, if the output configuration is changed via the FCAx3
configuration interface, then the equipment should be connected accordingly.
5.3.2 INPUT SENSOR WIRING
DANGER! - LIVE TERMINAL
Isolate the supply before installing/disconnecting or repairing the controller. Failure to do so can result in damage
to equipment and electrical shock.
WARNING!
If the probes placed in an accessible area have less than 1.4 mm insulation, then the probes need to be sleeved
(greater than 0.4mm thickness) to attain supplementary insulation.
Separate as much as possible the input sensors and cables carrying inductive load and power. Do Not run power
and signal cables together in the same conduit.
0.11” vertical male spade terminals are used for the input connectors on the FCAx3.
Temperature probes and the door switch use a 2-way female crimp terminal connector.
1. Connect the regulating temperature probe (air) to terminal PRB1 on the FCAx3.
2. Connect the defrost temperature probe (evaporator) to terminal PRB2 on the FCAx3.
3. Connect the door switch to terminal D-SW on the FCAx3
Note: Input connections are based on a typical installation. Probe inputs can be configured
according to your requirements in the configuration software. PRB1an PRB2 can only be used
for temperature probes. D-SW can be used for a door switch or temperature probe.
5.3.3 EXTERNAL DEVICE CONNECTION
DANGER! - LIVE TERMINAL
Isolate the supply before connecting/repairing/disconnecting external devices. Failure to do so can result in damage
to equipment and electrical shock.
Do not power the controller with connecting cables unconnected to devices as if exposed connectors were to
touch the frame or chassis of the cooler, damage to the controller, equipment, and the cooler will occur.
WARNING!
Separate as much as possible the input sensors and cables carrying inductive load and power. Do Not run power
and signal cables together in the same conduit.
1. Remove the rubber dust cover from the data port on
the side of the FCAx3.
2. Insert the Micro USB-B connector of the connection
cable into the Micro USB-B port in the FCAx3. Ensure
the connector is fully pushed down.
Note: The port is recessed, and the cable has a rubber boot
so when a device is connected, the IP rating is maintained.
3. Plug the other end of the connector cable into the
connector on the device.
+-
+-
OR
+-

FCAx3 USER MANUAL
A3+ CMYK
18+44 (1753) 214 500
6. TESTING PROCEDURE
6.1 THERMOSTATIC FUNCTION
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1. Connect the FCAx3 to a source of variable AC voltage such as a Variac and set the temperature dial to 9. Adjust the
output of the Variac to a good starting voltage (within the acceptable limits) and power it on. The yellow LED will turn ON
and stay on if the temperature detected by the regulation temperature probe (Probe#1) is below the cut-in temperature. If
the temperature is above the cut-in value, then the yellow LED will flash.
2. When the Intelligent Time Delay is over, the FCAx3 will connect the mains supply to the compressor (assuming the
temperature sensed by Probe#1 is above the cut-in temperature). The green LED will now turn ON.
3. Once the cabinet has reached the desired temperature (the temperature sensed by Probe#1 drops below the cut-out
temperature), the FCAx3 will disconnect the compressor and the green LED will start flashing which indicates there is no
cooling demand.
6.2 DEFROST FUNCTION
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1. Connect the FCAx3 to a source of variable AC voltage such as a Variac and set the temperature dial to 9. Adjust the
output of the Variac to a good starting voltage (within the acceptable limits) and power it on. The yellow LED will turn ON
and stay on for the duration of the protection time delay (assuming the temperature is above the cut-in value).
2. When the Intelligent Time Delay is over, the FCAx3 will turn on the compressor and the green LED will turn ON.
3. The unit will go into defrost as soon as one of the defrost start criteria is met. This could be either defrost start time is over
or the evaporator temperature drops below defrost start temperature value, whichever happens first, or is activated. The
green and red LEDs will turn ON, and the compressor and other outputs will act according to the set operation, turning
ON if set to ON.
4. The unit will stay in defrost until one of the defrost end criteria is met. This could be either defrost end duration is over or
the evaporator temperature has risen above defrost end temperature value, whichever happens first, or is activated.
Note: The FCAx3 has two built-in features which force the unit into defrost to reduce the testing time:
Manual Defrost (Temperature dial)
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1. Connect the FCAx3 to a source of variable AC voltage such as a Variac and set the temperature dial to OFF. Adjust the
output of the Variac to a good starting voltage (within the set limits) and power it on. The green LED will turn ON.
2. Rotate the dial to 4 (within 7.5 seconds and stay there for at least 200mSec). The yellow LED will be ON.
3. Rotate the dial to 2 (within 7.5 seconds and stay there for at least 200mSec). The red LED will be ON.
4. Rotate the dial to 8 (within 7.5 seconds and stay there for at least 200mSec). All LEDs will be ON.
5. Rotate the dial from 8 to any other number and defrost mode will be activated. The green and red LEDs will be ON, and the

FCAx3 USER MANUAL [e-mail]19
A3+ CMYK
compressor and other outputs will act according to the set operation, turning ON if set to ON.
6. The unit will stay in defrost until one of the defrost end criteria is met. This could be either defrost end duration is over or
the evaporator temperature has risen above defrost end temperature value, whichever happens first, or is activated.
Immediate Defrost at Power UP Enabled (programmed via the configuration software)
1. Connect the FCAx3 to a source of variable AC voltage such as a Variac and set the temperature dial to 9. Adjust the output
of the Variac to a good starting voltage (within the acceptable limits) and power it on.
2. If the defrost enable temperature is met, the FCAx3 will enter defrost. The green and red LEDs will be ON, and the
compressor and other outputs will act according to the set operation, turning ON if set to ON.
3. The unit will stay in defrost until one of the defrost end criteria is met. This could be either defrost end duration is over or
the evaporator temperature has risen above defrost end temperature value, whichever happens first, or is activated.
Note: Ensure to disable this feature and reprogram the FCAx3 before sending the cooler/controller to market.
6.3 VOLTAGE PROTECTION FUNCTION
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1. Connect the FCAx3 to a source of variable AC voltage such as a Variac and set the temperature dial to 9. Adjust the
output of the Variac to a good starting voltage (within the acceptable limits) and power it on. The yellow LED will turn ON
and stay on for the duration of the protection time delay (assuming the temperature is above the cut-in value).
2. When the Intelligent Time Delay is over, the FCAx3 will turn on the compressor and the green LED will turn ON.
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3. Slowly decrease the voltage until the red LED turns ON while the green LED is still ON. The LEDs will stay ON for the
duration of the Under Voltage Blind Time (2 seconds),
4. Then the FCAx3 will disconnect the outputs and the green LED will turn OFF so just the red LED is ON. This represents
the Low Voltage Disconnect voltage.
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5. Increase the voltage slowly until the yellow LED turns ON. This represents the Low Voltage Reconnect voltage.
6. Wait for the Protection Time Delay, then the green LED will turn ON.
7. Repeat steps 3 to 6 but increase the voltage to test the overvoltage.
• The High Voltage Blind Time is 0.5 seconds.
Note: Low/high Blind Times are Sollatek’s recommended timings. Blind times are configurable in the desktop configuration
interface so actual timings may differ from the times stated depending on your settings.
**Tip: During testing, short the test pins to bypass the set time delay and force the FCAx3 to operate immediately**

FCAx3 USER MANUAL
A3+ CMYK
20+44 (1753) 214 500
7. ALARMS & ERRORS
7.1 FREQUENCY MONITORING AND ERROR DETECTION
The FCAx3 dynamically measures the frequency of the mains supply and reacts accordingly. If the mains supply frequency is
too low or too high, the FCAx3 will then disconnect the compressor and indicate an error signal through the LEDs. The FCAx3
can auto-recover once the frequency is within acceptable limits.
Normal
frequency
35-75Hz
Intelligent time delay
ON
OFF
Compressor
Mains Voltage
High
frequency
>75Hz
Normal
frequency
35-75Hz
Normal
frequency
35-75Hz
Low
frequency
<35Hz
Time
Note: The above illustration assumes that the Mains voltage RMS value is good and there is cooling demand, hence the
compressor comes on after the intelligent time delay is over.
7.2 REGULATION PROBE (PROBE#1) ERROR DETECTION
The FCAx3 will report an error code through the LEDs indicating a sensor fault if it happens. Depending on customer
preferences the FCAx3 will either:
Scenario One: Detect the fault and disconnect the compressor until the problem is resolved and then the system resumes
normal operation.
Cut in
Average
Cut out
faulty
functioning
On
O
Temperature
reading
Probe
Compressor
Probe fault has
been detected.
Compressor
switches o
until the fault
is recovered.