Micro-Air 351 Air Conditioner Digital Thermostat User Guide

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

EasyTouch RV 351  

EasyTouch RV^TM  

Reference Manual  

for Model  

351  

1

©2024 Micro-Air LLC  

Revision 2.0  

VIEW FULL SCREEN PDF MANUAL

General	Details
Name	Micro-Air 351 Air Conditioner Digital Thermostat User Guide
Make	Micro-Air
Language	English
Filetype	PDF (Download)
File size	0.6 MB

Download PDF

(1 votes, average: 5.00 out of 5)

Loading...

• ALL THERMOSTAT INSTRUCTIONS & USER MANUALS
• Micro-Air

Micro-Air 351 Air Conditioner Digital Thermostat User Guide Overview

Summary of Contents

• Page 1: EasyTouch RV reference manual for model 351. Revision 2.0. ©2024 Micro-Air LLC.
• Page 2: EasyTouch RV 351 Models and compatible replacements Included in the box Installing the display Safety Removing the old display’s faceplate Wiring the display Re-apply power Mounting the display Initial setup instructions Available modes and communication
• Page 3: EasyTouch RV 351 model displays are Bluetooth and Wi-Fi enabled for remote access to your RV’s comfort system. The 351 models were designed to directly replace certain 12-volt Dometic single-zone displays. All functionality of the original control is preserved, alongside new functionality and fixes for long-standing issues. Use this manual for detailed installation and operation of this product. EasyTouch RV 351 can be purchased in two colors: black and white. EasyTouch RV 351 models are only for use in Dometic Single-Zone Capacitive Touch or Single-Zone LCD systems. The 351 is a direct, drop-in replacement of these displays. They are square displays with centered LCD screens and three buttons. The color of the plastic and arrangement of markings and LEDs is not important, as long as it has the same plastic form. If your display is not the same form as those shown, then EasyTouch RV model 351 is not the appropriate replacement.
• Page 4: EasyTouch RV model 351 is shipped with the following items: 1x EasyTouch RV 351 Display, 1x Quick-Instruction Card, 1x Mounting Bracket, 4x Screw Hole Covers. The mounting bracket is used during installation. The screw hole covers can be used to cover holes in the wall from the previous display if they are exposed. It is recommended to remove both AC and DC power from your system. Unplug your RV from shore power and turn off any converters or generators to remove AC power. Open your 12-volt DC bus breaker or fuse to de-energize your display. This greatly reduces the chance of any harmful electrical discharge. Depress the rectangular locking tab on the bottom of the display with a small screwdriver. The backplate is now exposed that shows its screws and the display’s wiring. Before removing the wiring, write down the color of the three wires and the name of the terminal that each wire goes to. The wire terminals will be labeled 12V+, COM or COMMS, and -12V or GND, depending on which display you have. After recording the original wiring, disconnect them from their screw terminals and remove any wall attachment screws. Free the back plate from the wall.
• Page 5: Wiring the display involves using a screwdriver to depress the COMM terminal of the EasyTouch RV push button connector. This action opens the wire clamp jaw for the terminal, allowing a wire to be inserted. Releasing the button closes the jaw and secures the wire connection. It is important to insert the original wire into the appropriate EasyTouch RV terminal, ensuring approximately 3/8 inch of exposed wire. If using stranded wire, twist the strands together before insertion. A small screwdriver can be used to push down on the square push button for wire insertion. After inserting the wire, verify the connection by gently pulling on it. If the stripped wire end exceeds 3/8 inch, it should be cut to prevent bare wire from sticking out. Terminal labels include SZLCD, 12V-, COMMS, 12V+, CT, GND, and COM. A wiring guide is provided to assist with connections.
• Page 6: EasyTouch RV 351 You may have accidentally lost which wire is used for what purpose. You can typically use a voltmeter to determine what each wire is. Disconnect the three wires and set the meter to measure DC voltage at least up to 16 volts. Make sure your color probe is seated in the matching color hole of the voltmeter. Probe two of the three wires and match the measurement to Table 3. The measurements may be slightly different but the proportion laid out by the table should be close enough to determine which wire is which. Terminal labels of wires for EasyTouch RV. Restore DC power. The display screen should light up and boot into the main menus. Restore AC power so that your appliances can run again.
• Page 7: EasyTouch RV 351 Mounting the display Level the mounting bracket horizontally across the hole with the smaller diameter of the mounting button against the wall. Cut away the center of the mounting bracket before mounting the display on the wall. Screw in one screw and level the buttons so the display will be straight when installed. Align the buttons with the holes in the back of the display. Press the display against the wall and gently slide the display down to lock it in place. Screw in the second screw and make sure the buttons are flat and level. The wider inner diameter button has some play to make these adjustments easier.
• Page 8: EasyTouch RV 351 Initial setup instructions There is no software configuration required to control your appliances from the touchscreen. The control board in the air conditioner determines the available appliances automatically. This makes EasyTouch RV 351 a plug-and-play solution. Default operation is often fine for most users. EasyTouch RV can be operated entirely by the touchscreen. You can also communicate, monitor, and modify operation wirelessly using the EasyTouch RV application. It is recommended to make sure all aspects of the system are working from the display itself before moving on to trying the app. The app mirrors the display touchscreen operation when connected.
• Page 9: EasyTouch RV 351 Operating the display - touchscreen Main screen This screen allows you to set and monitor the desired operation of the display. Operational mode This is the main operating state of the system. Tap it to change to any available mode or turn the zone or entire system off. Actual operation is performed by the A/C control board. Fan speed This sets how the electric fan will operate in conjunction with the selected operational mode. Inside temperature This is the temperature reading for the space that the display is trying to temper. Temperature setpoint This button shows the current temperature setpoint for the selected operational mode. Tap it to adjust the temperature setpoint.
• Page 10: EasyTouch RV 351 Settings This button will enter the settings screens. Settings are mostly for configuring the display and making changes that are not common or found on the main screen. WiFi Status The Wi-Fi indicator shows the state of the display’s Wi-Fi connection. A dark blue icon means no connection to an internet enabling device. Red means it is connected to an internet enabling device but does not have internet. Green means it is connected to the internet. Local Weather This icon indicates the local weather at the last time weather information was received. A Wi-Fi connection on the display is required to get weather data. Outside Temperature This is the temperature reading for your local area and may be retrieved over the display’s internet connection as part of the Local Weather information. Info Screen This screen shows information about the display’s operating state. Status Message Various messages may be shown here to indicate active operations.
• Page 11: EasyTouch RV 351 Operational modes operate the overhead electric fan and/or a heating or cooling cycle based on the current setpoint, relative to the inside ambient temperature. Set the desired mode by tapping the Operational Mode and choosing the desired mode or turn the system off. Tap the Fan Speed button if applicable to set the desired electric fan operation. Tap the Temperature Setpoint button if applicable to set the desired ambient temperature for this zone. Fans and Fan Only Mode lets the fan operate based on the chosen Fan Speed, circulating the air without operating any heating or cooling cycles. Cool Only Mode runs a cool cycle to maintain the cooling set-point in the selected zone. Electric Heat Only Mode runs an electric heat cycle to maintain the heating set-point in the selected zone. Set the Operational Mode to Heat Pump or Heat Strip and the desired Fan Speed and Temperature Setpoint.
• Page 12: EasyTouch RV 351 Auxiliary heat only mode runs a forced-air auxiliary heat cycle to maintain the heating set-point in the selected zone. Set the operational mode to furnace or aqua and the desired fan speed and temperature setpoint. Auto modes automatically switch between a heat or cool cycle as needed, without changing modes. Their operation is the same as their “only” mode counterpart to trigger cycles. Auto modes have their own dual set-points that are separate heating and cooling setpoints. No heating or cooling cycles will occur when the inside temperature is between these setpoints. These modes can be useful for setting a higher daytime cooling temperature and a lower nighttime heating temperature. They can also control temperature extremes when away from the space.
• Page 13: EasyTouch RV 351 Settings screens allow for further configuration and control of the display and system behaviors. Tap the settings button to view them. Use navigation buttons to flip through all available settings or return to the main screen. This screen displays a QR code for information about display operation and troubleshooting. Day mode will dim the display after 30 seconds of no screen presses. Night mode will turn the backlight completely off after 30 seconds of no screen presses. This screen allows you to set the active and sleep brightness levels. Tap the enable/disable button to turn the schedule on or off. This screen allows you to monitor the state of your Wi-Fi connection to the display. The MAC address of the display is shown at the bottom.
• Page 14: Max Wi-Fi Recovery restarts the thermostat if it detects an outage for too long to maintain the Wi-Fi connection. Sometimes, a cooling or heating cycle may terminate to accommodate this functionality. Home/Away setting changes between home and away memorized settings, allowing for different modes, schedules, set points, and fan speeds. Bluetooth password reset is necessary to regain remote access to the display after changing the app account password. Temperature reading adjustment allows calibration of the inside temperature reading with an offset. Temperature gap setting determines the temperature difference required before a heating or cooling cycle begins, helping to prevent short cycling. This offset applies to all logic involving setpoint operations, such as auto modes and auto gas changeover. Table 4 provides an operational example of temperature gap settings. The document is a user manual for the EasyTouch RV 351. Revision 2.0 indicates the version of the document.
• Page 15: EasyTouch RV 351 Measurement units determine the temperature scale to use in the display. Tap the units button to toggle between Fahrenheit and Celsius. The EasyTouch RV touchscreen is calibrated at the factory to accurately interpret touch presses. Tapping the touchscreen calibrate button will allow you to recalibrate the touch press area. This setting will turn the display off then on as if removing and restoring power. Tap the restart button and follow the on-screen prompts to confirm. This setting will reset certain settings in the display back to factory defaults. Tap the reset all button and follow the on-screen prompts to choose what you would like to reset. This setting is used to configure your display’s operational settings and is slightly different for each EasyTouch RV model. Most RV systems have auxiliary heat modes in the form of a “forced-air” gas furnace or hydronic heat.
• Page 16: EasyTouch RV 351 The schedule supports 7 day per week scheduling of events. Events can include changes to the set point or mode of operation for one or more zones. Each numbered row is an event that can be configured. The smart device application also offers a method to copy days. Once a schedule is set for one day, it can be copied to any other day using the app. This section shows all steps to create a schedule using a graphical flowchart. The next section shows the same process in more detail. It is recommended to be in front of the display when following this chart and follow the graphical elements and their arrows.
• Page 17: EasyTouch RV 351 Day of the week is selected from the days along the top of the screen. The day selected appears in white. Events are numbered 1 to 6 along the left side of the screen. Each row is a numbered event. Tap an event to edit it and advance to the schedule edit screen. This column shows the status of the event (row). It is either disabled or set for a time to apply its event settings. This column shows the mode that will be applied if this event (row) occurs. This column shows the temperature setpoint that is applied if this event (row) occurs. This column shows the zones that this event (row) will apply to. Only used in zoned systems. System time is displayed along the bottom. Tap the time to change from 12-hour to 24-hour time format. A valid time is required for the schedule to operate.
• Page 18: EasyTouch RV 351 The event time on the main schedule screen and Action Time in the edit schedule screen will show disabled until a time is set. Tap “Disabled” at the top of the screen to show a gray box around the Action Time to select it. Use the arrows to make a change to what is selected. Set the desired mode and (if available) fan speed by tapping their buttons. Set the event time by tapping hours, minutes or AM/PM. Zoned systems only: Tap the zone number to enable/disable the zone you want this event to affect. Create and Enable a Schedule Tap the edit schedule button to enter the main schedule screen. Ensure that a valid System Time is shown. Tap the Action Time, Setpoint and Mode/Fan Speed to make edits to what you want your event to do. Activate the schedule by pressing the schedule button with the “Enabled/Disabled” subtext.
• Page 19: EasyTouch RV is a drop-in replacement for specific OEM systems, offering unique operations and parameters. The system features auto gas changeover, switching from heat pump to auxiliary heat when outside temperatures are too low. A temperature sensor in the heat pump measures outside temperature to determine when to switch to auxiliary heat. Users can enable auto gas changeover and set the temperature for the changeover to occur. EasyTouch RV includes an automatic freeze lockout procedure to prevent damage when the inside coil freezes. When a freeze is detected, the system runs the fan to warm the coil and resume cooling. The main screen displays A/C Freeze Lockout during this process. Proper maintenance, like cleaning coil fins, can help prevent freezing issues. Humidity can also contribute to coil freezing, affecting airflow. Investigation of freeze-ups should be conducted with the help of an RV service technician.
• Page 20: EasyTouch RV has a temperature sensor installed in the display used to make decisions on when to run a cycle. The original system could only be set to heat or cool at any one time. EasyTouch RV has improved control over how the electric fan will operate during a cycle. Some messages may be displayed at the top of the main screen. EasyTouch RV does not hear the A/C control board, and a new installation may need to use “Reset All” to rescan after the wiring is inspected. In the unlikely event of a bad indoor sensor, EasyTouch RV needs to be repaired or replaced. Each A/C that has a heat-pump uses an outdoor sensor to ensure proper heat-pump operation. A/C has a sensor to detect a frozen coil during cooling operation to prevent damage. The A/C control board has detected a frozen coil and has locked out the cooling cycle. EasyTouch RV handles the A/C freeze lockout situation to clear the fault as quickly as possible.
• Page 21: Local weather is displayed on the main screen whenever Wi-Fi and internet is available. Tapping the Local Weather button will reveal more detailed weather information of the last received weather data. A valid location and an internet connection on the thermostat are required to retrieve weather data. Local time data also requires valid location data to set up the time zone. Location is saved in the thermostat when a Bluetooth connection is made from a smart device with its location services enabled. New weather data is retrieved when there is any screen press or when a connection from a smart device is made. Time is pulled in when a Bluetooth or Wi-Fi connection is made from the app. Tapping the weather icon area will change to the weather screen that will show the last valid weather data or weather troubleshooting information. The information screen will always show the sensor reading if there is a sensor. Systems without an outside temperature sensor cannot add one.
• Page 22: EasyTouch RV 351 Smart-device application features Check for updates to see if any updates are available for the display. The smart device application must have internet and the display must be connected to Wi-Fi. Notifications provide a way for the user to monitor the temperature in the space using notification limits. A minimum and maximum allowed temperature can be set. A notification will be sent for each degree it rises above the maximum temperature. If the temperature drops, no notification will be sent unless it exceeds the last maximum temperature again. This behavior helps avoid nuisance notifications to your smart device. Edit Wi-Fi settings or connect to Wi-Fi to make the connection from the display to the internet. The app must be connected to the display over Bluetooth to see the Wi-Fi connection option. Refresh configuration resets the saved configuration in the app if a configuration change is made at the display. Press the refresh button to sync the app to the display if there is a difference between the modes and zones available.
• Page 23: EasyTouch RV 351 Appendix A: Working Wirelessly This display may be operated remotely using either Bluetooth or Wi-Fi. All connectivity is performed through the EasyTouch RV App on a smart device. Bluetooth is a limited range method to connect, typically used when near the display. The display can be connected to an internet-connected network, allowing access from anywhere with an internet connection. If a second user is going to use the display remotely, they must use the same account and password assigned to the display. EasyTouch RV uses BLE, a special implementation of Bluetooth, and does not require traditional pairing. An internet connection on your smart device is necessary for the connection steps. Once the account is created, the application may ask to add a device. The app will show the display in the list to be added if it is powered and permissions are set up. Select the display you want to control from the Devices list to connect.
• Page 24: EasyTouch RV 351 Connecting to a new Wi-Fi network You can connect to the display from anywhere using the app when the display is connected to an internet source. The internet source must be operating on a 2.4GHz network to connect to EasyTouch. Press the settings gear to connect to the display in Bluetooth. Select “Connect to Wi-Fi” or similar from the settings window. The SSID (network name) will say “searching” then switch to “select”. Enter the password (case sensitive). The display will reset and a green Wi-Fi symbol will appear on the main display screen if the connection was successful. With a green Wi-Fi symbol, you can now connect to the display from anywhere using the app over the internet. Updating the EasyTouch RV display Ensuring you have the latest display software is key to having all the latest features.
• Page 25: Appendix B: Troubleshooting This section has some troubleshooting suggestions based on what you may find with this display in particular. EasyTouch RV does not have a three wire connector on the back. EasyTouch RV 351 is connected to the system by three wires. Make sure that you purchased a 351 model, the 351 is appropriate for you, and that you were shipped the correct model. The serial number will begin with “351” if it is an EasyTouch RV 351 model. EasyTouch RV reboots constantly or shuts down randomly. If you find it shuts down randomly then see section Max Wi-Fi Recovery. Inspect the wiring to make sure the wires are fully inserted into the display. Incorrect wiring will constantly reboot. Try to unplug and reseat the wiring and wait up to 30 seconds for the display to return.
• Page 26: EasyTouch RV 351 An appliance is not operating as expected. You may configure the system to start to heat or cool the space, and appliances are not turning on or off as you expect. The system’s logic is largely determined by the A/C control board. Use this section if you have trouble getting the system to heat and cool as expected. Make sure you have the latest display software. Is the ambient temperature drawn in white? Tap the mode button, then the power button to green and tap the desired mode. Check that the Temperature Gap (Hysteresis) operation is understood and set as expected. If an appliance is not running when the cycle is active, it is likely an issue outside EasyTouch RV. An RV shop is recommended to troubleshoot these parts of the system.
• Page 27: EasyTouch RV 351 The screen of the display normally has some graphics on it that show the status of the system operation. If it constantly goes black and reboots or does so randomly then see section EasyTouch RV Reboots Constantly or Shuts Down Randomly. Night mode will turn off the backlight so the screen is full black when inactive. Try to unplug the display by its 12V+ and GND wires for a few seconds, then plug it back in and wait up to 30 seconds for the display to return. Make sure your 12-volt system (typically a system battery) is charged and any breakers or fuses are closed. Use a voltmeter to measure for 12 volts DC between the two power wires. Inspect the wires for any damage or poor connection. There should be about 3/8” of exposed wire that is fully inserted to expose no copper. Peer down into the wire jaw and make sure there is no dirt or debris that could foul the connection. Try and plug in the OEM display if you still have it to verify operation.
• Page 28: EasyTouch RV 351 “No Control Response” is an error indicating that EasyTouch RV cannot hear the communication from the A/C control board. The system must be working before EasyTouch RV is installed. EasyTouch RV is not intended to fix any issues with the system unless the problem was known to be the OEM display. If there is a problem that persists with EasyTouch RV, it must be addressed with the assistance of an RV technician. Make sure you purchased and received the correct model display for your system. Inspect the installation wires for any issues. A strong, local source of electronic noise could cause interference with the communication. Try turning on and off separate electronics to see if a noise source can be found and relocated. If the system was working with EasyTouch RV installed for some time, still try the above recommendations. An RV shop may be best to assist in finding the source of the problem.
• Page 29: EasyTouch RV 351 Wi-Fi Troubleshooting This is a list of potential fixes for customers that have trouble connecting the display to the internet. SSID (Network name) and password are both case sensitive. Be sure you are connecting to a 2.4 GHz network and not a 5GHz or 6GHz network. Set the security to WPA2 and TKIP+AES if you are having trouble. The display has a limit of 31 characters for the SSID and 50 for the password. Ensure the number of devices limit for the network is not full. The router must have an internet connection. Be sure there is no firewall in the router blocking the incoming messages. If using MAC filtering, add the display to the allowed devices list. Navigate to the Micro-Air EasyTouch RV Knowledge Bank for troubleshooting articles.
• Page 30: EasyTouch RV 351 Micro-Air EasyTouch RV Knowledge Bank Home page of the knowledge bank for the latest guides on setup, operation, and troubleshooting. Quick Start and FAQ Manual Installation section of the Knowledge Bank, which has the quick start and FAQ manual at the top. That manual has graphical instruction for common operations for the touchscreen and the app, as well as the FAQ for operations and troubleshooting. Dealer Map This is a map of all technicians and RV shops associated with Micro-Air. Main website for buying our products and contacting us for support. Please read over the rest of the Appendix B: Troubleshooting section, the Quick Start and FAQ Manual, and the rest of this manual to see if it has the answers to your questions or issues.