EasyTouch 355 Operating Manual Revision 1.
Contents Did I buy the right thermostat? .................................................................................................................... 4 Installing the thermostat .............................................................................................................................. 4 Removing the old thermostat ................................................................................................................... 4 Wiring the thermostat .............................
Generator start ................................................................................................................................... 13 Furnace/Aqua...................................................................................................................................... 14 Gas Heat Override ................................................................................................................................... 15 Smart device application only features ...................
Did I buy the right thermostat? The EasyTouch 355 model thermostats were designed to directly replace Coleman™, Airxcel™ and RVP™ ZC thermostats. Original thermostats must have model numbers of 9330-333, 9330-334, 9330-335, 9330-336, or 9430-334 to be replaced by this thermostat. If your thermostat is not listed, please contact Micro-Air https://www.micro-air.com/SupportRequest to verify the thermostat you received is correct for your application.
Wiring the thermostat Original thermostats can have a plug-in connector or be direct wired to the RV manufacturer’s wiring. Thermostats wired with a plug can simply unplug the original plug and plug in the EasyTouch thermostat. Wired thermostats require the optional connector which can be ordered with the thermostat or ordered separately. To wire the connector models, match the original thermostat wiring colors to the connector colors.
Mounting the thermostat Step 1: Locate the mounting buttons horizontally across the hole with the smaller diameter against the wall. Step 4: Remove mounting tab before mounting on the wall. Step 2: Screw in one screw and level the buttons so the display will be straight when installed. Step 5: Aligning 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.
Setup Setting the available modes It is necessary to set up the available modes prior to operating your thermostat. Press the settings button on the main screen. Select the available modes button on the settings screen. Select cooling, Gas heat, or electric heat by pressing the icon. The red circle with a line through it will disappear indicating the mode is available. Available modes must match your original thermostat’s available modes.
Operating the thermostat Main screen 1. Inside temperature shows the ambient temperature of the room. 2. WIFI indicator shows the state of the WIFI connection. Green indicates WIFI is connected properly, Red indicates connection to router only, bars indicate signal strength, and no symbol indicates no connection. 3. Raise and lower the temperature set point using the red and blue arrows. 4. Use the power button to turn the system on or off. Button is red for off and green for on. 5.
Auto fan low N/A Electric heat, gas heat Fan turns on in low when heat is running Auto fan N/A Electric heat, Gas Fan turns on in high heat high when heat is running Fan off N/A Gas heat Fan does not turn on when gas heating is active Note: Auto fan speed changes with temperature. More than 1 degree from set point will run the high fan. The fan will run the low fan speed within one degree of set point. 7. Home-away-schedule icon. Pressing this button selects between these modes.
Away screen (Heat and cool set points) Away operation allows setting upper and lower limits for temperature with a non-operating area or “dead band” in the middle. This can be useful when setting a higher daytime cooling temperature and lower night time heating temperature. It can also be used to control the temperature extremes when you are away from the RV. The mode selected must be an automatic mode to allow both heating and cooling operation. 1.
Schedule screen Set points may be changed on a time-based schedule. The mode used will be the heating or cooling mode set on the main screen. Setting a change event 1. Events will show --:-- when the event is disabled. Press the hour’s position to set the hours. A flashing bar will appear under the hours along with up and down adjustment selectors. Use the adjustment selectors to change the hours. Press the minutes to move the flashing bar under the minutes and allow ¼ hour adjustments.
Settings Screens Press the settings gear on the main screen to show various settings options. Each icon has a description below it indicating the function of the icon. Some descriptions can change depending on the option selected. Please note that some options shown are specific to certain thermostats or selected options. Back Back returns you to the main screen. Next, Last Next and last allow navigating to various settings options.
Temperature reading adjustment Allows changing the internal thermostat sensor calibration. This function works only when “R” is not displayed after the inside temperature on the main screen. Sensors showing an “R” indicate the system is using remote sensors located in the air conditioner and they cannot be adjusted from the thermostat. Temperature Gap This sets the difference in temperature before an action will occur.
Furnace/Aqua Users who have a water heated system instead of a furnace can change the furnace icon to an Aqua icon. This makes it easier to determine the mode for some users. 14 ©2022 Micro-Air Corp March 15, 2022, revision 1.
Gas Heat Override This feature turns on the gas furnace from an electric heat mode when the set point is five or mode degrees away from the ambient temperature and heating is required. It is only available on systems that have both gas and electric heating and is only active in electric heat or cool/electric heat modes. If heating set point is 5 degrees or more above the inside temperature in an electric heating mode, the furnace will come on along with the electric heater.
Notifications Notifications provide a way for the thermostat to communicate back to a smart device like a tablet or phone. These notifications are indications of the temperature exceeding a set limit. Limits are set by connecting to the thermostat in the app, selecting the settings gear, and then selecting notifications. A minimum and maximum allowed temperature can be set. Table 4 shows an example of operation with an 80°F maximum temperature set.
Appendix A: Installation Troubleshooting The most common problem is not knowing the thermostat operation. If the system is running a heating or cooling cycle, the set point will turn red for heating and blue for cooling. When the thermostat turns white, the heat pump, heat strip and furnace should all be off. The fan may continue to run for a while after the cycle completes. If a fan is left in a manual mode, it will not shut off.
Appendix B: Connecting remotely First connection steps 1. This thermostat uses BLE which is a special implementation of Bluetooth. It is not necessary to “Pair” the thermostat with the phone but an account must be created for operation. 2. Start the app on your smart device. The app will open and if you have not entered your account information, it will ask you to create an account. Enter your name, email and a password at the prompts. The system will send a confirmation email to your inbox.
Appendix C: 9430-334 wiring Table 5 Original thermostat wire color Micro-Air harness color Function Purple Purple Signal 1 Black Black Signal 2 Green Green Zone 2 On White White Zone 1 High Blue Blue Ground in Red/White stripe Red/White stripe +12 VDC out Red Red + 12 VDC in Blue/White stripe Blue/White stripe Ground out Orange Orange Zone 2 High Yellow Yellow Zone 1 On Factory harness color (Provided to write in your color) Table 5 shows the wiring functions used for this
