MICRO-AIR EasyTouch User manual

EasyTouch 2.5
Operation Manual
2.5” Color TFT Touch Screen Controller
for FX1 & FX2 DX & CW Control Boards
Micro-Air, Inc. www.microair.net
124 Route 526 Ph: [phone]
Allentown, NJ 08501 Fax: [phone]

Micro-Air, Inc. Page 2 EasyTouch 2.5 Operations Manual
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TABLE OF CONTENTS
1. INTRODUCTION..................................................................................................................4
2. READ THIS MANUAL BEFORE PROCEEDING ................................................................4
3. FEATURES..........................................................................................................................4
3.1 Standard.....................................................................................................................................................4
3.2 Optional......................................................................................................................................................4
3.3 Main Controller Boards Currently Supported by EasyTouch .....................................................................4
3.4 Main Controller Boards Not Currently Supported by EasyTouch...............................................................4
4. OVERVIEW..........................................................................................................................5
4.1 EasyTouch Home & Main Screen Displays ...............................................................................................5
4.2 EasyTouch Power-Up & Default Sleep Mode Screen Display...................................................................5
5. INSTALLING THE DISPLAY PANEL..................................................................................5
5.1 Choosing the Location................................................................................................................................5
5.2 Mounting the Display..................................................................................................................................6
6. INSTALLING THE OPTIONAL SENSORS..........................................................................7
6.1 Remote (Alternate) Air Temperature Sensor .............................................................................................7
6.2 Outside Air Temperature Sensor................................................................................................................7
6.3 Service Sensor (For DX systems only) ......................................................................................................7
6.4 Water Inlet Temperature Sensor (For CW systems only)..........................................................................7
6.5 Combo Temperature/Humidity Sensor (For CW FX2 systems only).........................................................8
7. NORMAL HEATING OR COOLING CYCLE.......................................................................8
7.1 Reversing Valve Operation (for DX systems only).....................................................................................8
7.2 Water Valve Operation (for CW systems only) ..........................................................................................8
8. OPERATION........................................................................................................................9
8.1 Operator Controls and Display...................................................................................................................9
8.2 Modes of Operation..................................................................................................................................11
8.3 Fan Speed Modes....................................................................................................................................12
9. FAULTS.............................................................................................................................12
9.1 Air Sensor Fault (DX & CW, immediate lockout)......................................................................................13
9.2 High Pressure Fault (DX Only, contributes to lockout count)...................................................................13
9.3 Low Pressure Fault (DX Only, contributes to lockout count) ...................................................................13
9.4 Low AC Fault (DX Only, no lockout) ........................................................................................................13
9.5 Pump Sentry Fault (DX Only, contributes to lockout count).....................................................................14
9.6 Lost AC Fault (DX Only, no lockout) ........................................................................................................14
10. MENU AND SETTINGS OVERVIEW.................................................................................14
10.1 Menu Screen............................................................................................................................................14
10.2 Settings Screen........................................................................................................................................15
11. CONTROL PARAMETERS MENU....................................................................................15
11.1 General Settings.......................................................................................................................................16
11.2 DX Operational Settings...........................................................................................................................22
11.3 CW Operational Settings..........................................................................................................................25
11.4 Memorize Settings....................................................................................................................................27
11.5 Recall Memorized Settings.......................................................................................................................27
11.6 Recall Default Settings.............................................................................................................................27
12. PROGRAM SCHEDULER MENU......................................................................................27
12.1 Mode Control and Operational Behaviors................................................................................................28
12.2 Programming a Day or Group of Days.....................................................................................................28
13. DATE/TIME MENU ............................................................................................................29
13.1 Enabling the Date/Time Display...............................................................................................................29
13.2 Changing the Date/Time Format..............................................................................................................30

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13.3 Setting the Date & Time...........................................................................................................................30
14. SYSTEM MENU.................................................................................................................30
14.1 Firmware Version .....................................................................................................................................31
14.2 Display Setup ...........................................................................................................................................31
14.3 Sleep Mode Settings ................................................................................................................................31
14.4 Display Lock.............................................................................................................................................33
14.5 Cleaning Mode .........................................................................................................................................34
15. TROUBLESHOOT & COMMISSION MENU......................................................................35
15.1 System Status ..........................................................................................................................................35
15.2 Help & Information....................................................................................................................................35
15.3 Commission Procedure............................................................................................................................36
16. FAULT HISTORY & RUN HOURS MENU.........................................................................36
16.1 Fault History .............................................................................................................................................36
16.2 Compressor Run Hours............................................................................................................................37
16.3 Fan Run Hours.........................................................................................................................................37
17. SPECIFICATIONS.............................................................................................................38
18. WARRANTY AGREEMENT ..............................................................................................39

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1. INTRODUCTION
The EasyTouch Control is a microcontroller-based unit designed for use with direct expansion, reverse-
cycle air conditioning systems or with chilled-water air handlers.
2. READ THIS MANUAL BEFORE PROCEEDING
Read this manual completely before you proceed with the installation and operation of the EasyTouch. If
you have questions or require assistance with your EasyTouch control, contact Micro-Air at +1 (609) 259-
2636.
The EasyTouch is covered under the Micro-Air Warranty Policy, and incorrect installation, neglect and
system abuse are not covered under warranty policy. See section 18 for more details.
3. FEATURES
3.1 Standard
Works automatically via auto-detection with FX1 or FX2 control circuit boards.
User-friendly and intuitive 2.5” touch screen display requires no manual for basic operation.
Five-volt logic and microcontroller located in the display.
Automatic and three programmable manual fan speeds.
Numerous programmable parameters for custom installations.
Moisture Mode for controlling relative humidity.
De-Icing cycle to prevent evaporator coil icing.
Programmable compressor staging delays.
Universal 115-230V, 50/60Hz AC power supply.
Nonvolatile memory retains settings without batteries.
Programmable display-brightness control.
Programmable failsafe modes.
Fits Vimar® Eikon and Eikon EVO bezels.
3.2 Optional
Outside air temperature sensor.
Alternate air temperature sensor.
Pump Sentry (Service) water sensor.
Relative Humidity Control (FX2 only with humidity option board)
Electric heating control capabilities.
Air Filter Cleaning or Replacement Timer.
Low-Voltage Monitor.
CAN-bus network capability (FX2 only with option board, future feature)
3.3 Main Controller Boards Currently Supported by EasyTouch
ASY-370-X09 FX1 Control Circuit Board standard.
ASY-360-Xr1 FX2 Control Circuit Board, standard.
ASY-360-Xr11 FX2 Control Circuit Board, with Humidity daughterboard option.
(r = current hardware revision letter for the main control board)
3.4 Main Controller Boards Not Currently Supported by EasyTouch
ASY-360-Xr2 FX2 Control Circuit Board, with CAN Bus daughterboard option.
ASY-360-Xr4 FX2 Control Circuit Board, with DC Blower daughterboard option.
ASY-360-Xr5 FX2 Control Circuit Board, with EasyStart™daughterboard option.
ASY-360-Xr8 FX2 Control Circuit Board, with FAMU Control daughterboard.
Support for the above FX2 models will be getting added as required by the customers.
This manual provides all necessary information for proper installation and operation of the
EasyTouch Display. Poor installation and misunderstood operating parameters will result in
unsatisfactory performance and possible failure.

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4. OVERVIEW
4.1 EasyTouch Home & Main Screen Displays
The EasyTouch Home screen shown in Figure 1 consists of large, easy to read graphics, with large
buttons for basic control functions. The Main screen shown in Figure 2 consists of smaller graphics
showing all of the controls readouts and statuses, and had more buttons for all of the control
functions.
Figure 1 –Home Screen Display Figure 2 –Main Screen Display
4.2 EasyTouch Power-Up & Default Sleep Mode Screen Display
During power up and whenever the display enters Sleep Mode, the display shown in Figure 3 is
shown. While in Sleep mode, the graphic will move around the screen. See section 14.3 for more
information on the various Sleep Mode settings.
Figure 3 –Power-Up & Default Sleep Screen Display
5. INSTALLING THE DISPLAY PANEL
5.1 Choosing the Location
Before mounting the control panel, consider the location. The display panel’s built-in air sensor
provides excellent room-air temperature sensing when properly located and installed. The physical
location of the air sensor is shown in Figure 4 and marked with “S”. Be sure to mount the display
panel on an inside wall, slightly higher than mid-height of the cabin, in a location with freely circulating
air where it can best sense average temperature. The display’s distance from the air conditioner must
be within the 15’ (4.5m) length of the display cable. Longer, custom cable lengths are also available.

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Figure 4 –EasyTouch Display Front Panel
IMPORTANT:
Do not mount the display in direct sunlight, near any heat-producing appliances or in a
bulkhead where temperatures radiating from behind the panel may affect performance. Do
not mount the display in the supply-air stream. Do not mount the display above or
below a supply-air or return-air grille. Do not mount the display behind a door, in a corner,
under a stairwell or any place where there is no freely circulating air. If you cannot mount
the display in a suitable location for accurately sensing room temperature, install the
optional remote air sensor as explained in section 6.1.
5.2 Mounting the Display
1. Choose a wall location that has adequate depth (at least 1”/25.4mm) behind the wall itself. See
Figure 5 for the depth dimensions of the display.
Figure 5 –EasyTouch Display Top View Mounting Dimensions
2. Make the cut-out for the display panel as shown in Figure 6. Cut-out size is 2.900” (74mm) wide
by 2.165” (55mm) tall.
S

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Figure 6 –EasyTouch Display Mounting Dimensions
3. Plug one end of the display cable (8-pin connector) into the display jack on the circuit board in the
electric box and the other end into the back of the display panel.
4. Secure the display panel to the bulkhead using the four screws provided.
Do not use a screw gun and do not over tighten screws when mounting, because either method
may damage the display.
5. When the display is securely mounted, mount the bezel over the display frame until it snaps into
place.
6. INSTALLING THE OPTIONAL SENSORS
6.1 Remote (Alternate) Air Temperature Sensor
Install the optional remote air sensor if the display cannot be mounted in a proper location for
accurately sensing room temperature. Installing the remote air sensor overrides the display’s built-in
sensor. The standard cable length for the remote air sensor is 7 feet (2.1m).
1. Mount the remote air sensor in a reliable return-air stream, preferably just behind the opening of
the return-air grille. DO NOT attach the sensor to the edge of the unit’s drain pan since the
condensate water and cold air spilling off of the heat exchanger coil will cause an inaccurate
temperature reading.
2. Plug its cable (6-pin connector) into the “ALT. AIR” jack on the circuit board.
6.2 Outside Air Temperature Sensor
Install the optional outside air temperature sensor to monitor the temperature outside the cabin.
Outside air sensor cables are available in various lengths.
1. Mount the sensor outside but not in direct sunlight.
2. Plug its cable into the “OAT” jack on the circuit board.
6.3 Service Sensor (For DX systems only)
Install the optional condenser coil temperature sensor into the “OAT/H20” jack on the FX1 circuit
board or into the “SERVICE” header on the FX2 circuit board.
1. Mount the sensor in the middle of the condenser coil, strapping it securely to the piping.
2. Enabled the use of this sensor by going to DX Operational Settings, and then the Pump Sentry
feature as explained in section 11.2.5.
6.4 Water Inlet Temperature Sensor (For CW systems only)
When using the EasyTouch with a chilled-water air handler, plug the water-inlet sensor cable into the
“OAT/H2O” jack on FX1 or into the “OUTSIDE” jack on FX2. Attach the sensor securely to the

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chilled-water inlet pipe on the air handler. Ensure that the sensor makes good contact with the
copper pipe and make sure it is covered with adequate insulation. DO NOT attach the sensor to
rubber hose.
6.5 Combo Temperature/Humidity Sensor (For CW FX2 systems only)
The optional EasyTouch temperature and humidity control feature is available only with the FX2
control board. For FX2 control board revisions PCB-360-00I and newer, plug the combo
temperature/humidity sensor into the “ALT. AIR” jack. For FX2 control board revisions PCB-360-00G
and older, the PCB-731-00 daughterboard option is required; plug the combo temperature/humidity
sensor into the “INTAKE” jack on the daughterboard. The temperature and humidity control feature is
enabled automatically. See section 11.1.17 for more information on using the humidity control feature.
7. NORMAL HEATING OR COOLING CYCLE
In Automatic Mode, heating and cooling are supplied as required. If cooling is required, the system will
start a cooling cycle when the cabin temperature exceeds the set point by 2°F (1.0°C) and will continue to
cool until the temperature equals the set point. (See the parameter setting Set Point Temperature
Differential as described in section 11.1.14 for more information on how to change this variation to 1°F
[0.5°C].) The cabin temperature must drop below the set point by at least 4°F (2.0°C) in order for the
system to switch from cooling to heating. Similarly, if heating is required, the system will start a heating
cycle when the cabin temperature is below the set point by 2°F (1.0°C) and will continue to heat until the
temperature equals the set point. The cabin temperature must exceed the set point by at least 4°F (2.0°C)
in order for the system to switch from heating to cooling. If you select Cool Mode, only cooling is supplied.
If you select Heat Mode, only heating is supplied. The cabin temperature in either mode is maintained
within 2°F (1.0°C) of set point by default. When the heating or cooling set point is satisfied, the compressor
cycles off and the fan returns to low speed. The fan speed remains constant if Manual Fan Speed is
selected. For more information on the fan speed control and its operation, see section 8.3.
7.1 Reversing Valve Operation (for DX systems only)
The position of the reversing valve determines if the system is in Cool Mode or Heat Mode. The
EasyTouch and FX1/FX2 systems are designed to energize the reversing valve output when in
Heat Mode. In addition, the reversing valve will toggle into the opposite position for 2 seconds to
equalize the system pressure and reduce the compressor’s starting surge whenever a cooling or
heating cycle is called for and the system has been off for less than 75 seconds. Unnecessary valve
toggling is limited to reduce reversing valve noise.
7.2 Water Valve Operation (for CW systems only)
When cooling or heating is required, the water valve will not open unless the water temperature is
adequate. The fan remains in low speed until the adequate water temperature is available and the
system status on the Main display screen will show “Cool Pending” or “Heat Pending”. If the optional
Electric Heater is enabled, heating will be provided if the water temperature is not adequate. See the
Water Temperature Differential parameter setting described in section 11.3.2 for a definition of
adequate cooling or heating water temperature and how to adjust its factory default setting to
something other than 10°F (6°C).

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8. OPERATION
8.1 Operator Controls and Display
8.1.1 Home Screen Indicators & Buttons
Figure 7 –EasyTouch Home Screen Icons & Functions
1. Force Sleep Mode Button - Press and release to force Sleep Mode to initiate
immediately, if enabled. See section 14.3 for more information on Sleep Mode.
2. Temperature Display Selection –Indicates the current temperature display value: SET,
INSIDE, OUTSIDE, SERVICE/WATER, or %RH. If the associated temperature sensor is
not installed or is faulty, “- - -”will be displayed.
3. Status Indicator –Indicates the system status: OFF, PENDING, ACTIVE, STANDBY, or
FAULT.
4. Temperature Display Indicator –This value indicates the current temperature reading
that corresponds to the Temperature Display Selection explained above. Press and
release over the top of the numeric value to select the various temperature displays: Set
point(s), Inside, Outside, Service/Water temperatures, or Relative Humidity (if equipped).
By default, the temperature display will always revert back to showing the Inside
Temperature after 3 seconds. If you wish to change the default Temperature Display to
one of the other available choices, immediately after selecting the desired temperature,
press and hold again for 5 seconds (until the button highlight disappears) and the
currently displayed temperature will be retained and reverted back to.
5. More Button - Press and release to change display to Main Screen.
6. Up Button - Press and release to display the set point. Press and release or press and
hold the UP button to increase the set point.
7. Down Button - Press and release to display the set point. Press and release or press
and hold to decrease the set point.
8. Power On/Off Button - Press and release to toggle between the ON (green) and OFF
(red) Modes.
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8.1.2 Main Screen Indicators & Buttons
Figure 8 –EasyTouch Main Screen Icons & Functions
1. Mode Button - The Mode button indicates the currently active mode of operation. Press
and release to step through the four available operating modes: COOL, HEAT, AUTO,
and MOISTURE. See section 8.2 for more information on all the modes of operation.
2. Fan Speed Mode Indicator –This label indicates the current fan speed mode, AUTO or
MANUAL. See section 8.3 for more information on the fan speed mode.
3. Fan Speed Indicator –This indicator is a bar graph that shows the speed at which the
fan is currently operating. There are 3 fan speeds with EasyTouch: 1 bar lit indicates low
speed, 4 bars lit indicate medium speed, and 7 bars lit indicate high speed.
4. Fan Button –The Fan button is used to control the fan speed. The Fan button will rotate
when the fan is on, and will be stationary when the fan is off. See section 8.3 for more
information on the controlling the fan speed.
5. Menu Button –The Menu button allows access to the EasyTouch Main Menu and all
sub-menus beyond. See section 10 for more information on the menus.
6. Up Button - Press and release to display the set point. Press and release or press and
hold the UP button to increase the set point.
7. Temperature Display Selection –Indicates the current temperature display value: SET,
INSIDE, OUTSIDE, SERVICE/WATER, or %RH. If the associated temperature sensor is
not installed or is faulty, “- - -”will be displayed.
8. Temperature Display Indicator –This value indicates the current temperature reading
that corresponds to the Temperature Display Selection explained above. Press and
release over the top of the numeric value to select the various temperature displays: Set
point(s), Inside, Outside, Service/Water temperatures, or Relative Humidity (if equipped).
By default, the temperature display will always revert back to showing the Inside
Temperature after 3 seconds. If you wish to change the default Temperature Display to
one of the other available choices, immediately after selecting the desired temperature,
press and hold again for 5 seconds (until the button highlight disappears) and the
currently displayed temperature will be retained and reverted back to.
9. Down Button - Press and release to display the set point. Press and release or press
and hold to decrease the set point.
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