Micro-Air 351 Air Conditioner Digital Thermostat User Guide
EasyTouch RV 351
No Control Response
“No Control Response” is an error indicating that EasyTouch RV cannot hear the communication
from the A/C control board. This is a proprietary digital signal through the COMMS terminal wire.
The system, prior to EasyTouch RV installation, 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 then they must be addressed
with the assistance of an RV technician. If new control boards were replaced or installed then it is
recommended the installation be verified by an RV shop. There are many facets to system
installations that go beyond a simple drop-in replacement. Micro-Air cannot assist in installations
where more than just the display is replaced.
If the system was otherwise working:
•
Make sure you purchased and received the correct model display for your system. Inspect
the serial number on the back of EasyTouch RV; the first three digits should be “351”. Use
Make sure you have the latest display software. See section Updating The EasyTouch RV
Display for more details.
Navigate to “Reset All” in the display settings. Follow the prompts to rescan for the control
board specifically or factory reset the display and this will force EasyTouch RV to scan for all
a control it can hear. Wait about 2 minutes for the message to disappear. Try again if it does
not.
•
•
•
•
Inspect the installation wires for any issues. 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 fowl the connection. See that the clamp opens and closes when you
depress and release its button, respectively.
A strong, local source of electronic noise could cause interference with the communication.
We have found that some customers have a digitally-controlled fan installed right next to the
display, and the 12 volt and ground connections were wired along the same wires as
EasyTouch RV. They would have no issue when the fan was off and intermittent problems
with it on. Routing power wires for the fan separate from the display resolved the issue.
o
In theory, other strong noise sources could be an issue if local to the display. Try
turning on and off separate electronics to see if a noise source can be found and
relocated.
•
Try and plug in the OEM display if you still have it to verify operation.
If the system was working with EasyTouch RV installed for some time, still try the above
recommendations. In addition to those recommendations, it is possible that some part of the
system has failed. It is possible that the cable at the control board or the control board itself has
failed. In addition to any sustained damage to the control board itself, each board has 12 volts come
in, then 12 volts and communication wires go down to the display. Any issue with these connections
would cause a problem. An RV shop may be best to assist in finding the source of the problem.
28
©2024 Micro-Air LLC
Revision 2.0
| 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 |
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