Micro-Air 351 Air Conditioner Digital Thermostat User Guide
EasyTouch RV 351
Unique Features
Each model of EasyTouch RV is a drop-in replacement for a specific existing OEM system. This
means each model will have some unique operations and parameters that can be set. EasyTouch
RV also brings new functionality to the OEM system.
Auto Gas Changeover
The OEM system does not have a protocol for automatically switching from heat pump to auxiliary
heat (gas or hydronic heat) when the outside temperature is deemed too cold for the heat pump to
create heat. The original system will simply shut down, while EasyTouch RV will switch over to
auxiliary heat. A temperature sensor in the heat pump measures the outside temperature to make
this decision.
First, navigate to Setup and turn on Auto Gas Changeover if desired from the enable button. Then,
set the temperature for the changeover to occur. When the outside temperature goes below this then
the auxiliary heat will turn on until the outside temperature rises back above this setpoint. This
feature will be grayed out if your system does not have a heat pump.
A/C Freeze Lockout Procedure
Some OEM systems would “randomly” shut down a cool cycle with no messages saying why. This
was because the system detected that the inside coil has frozen, which could cause damage to the
system if left to run, determined by a temperature sensor attached to the coil. EasyTouch RV has a
fully automatic procedure to handle this when it happens so that the issue is cleared and cooling
can resume as quickly as possible by warming the coil.
Once a freeze is detected, EasyTouch will run the fan until the freeze detection has cleared, and
cooling will resume. Running the fan will warm to coil to prevent damage. “A/C Freeze Lockout” or
similar will show on the main screen of EasyTouch while this is occurring.
This is typically due to the A/C unit’s inability to pass air over the coil while cooling. This can often be
resolved by normal maintenance like cleaning the coil fins to allow proper airflow. Sometimes
however, the day could be very humid and so the coil is susceptible to freezing. Some customers
report that it is a design flaw of the system and they simply do not pass enough air, even if the coil is
clean and fan on high speed. Micro-Air cannot assist in diagnosing the causes of a system’s freeze
ups. This should always be investigated to make sure the root problem is resolved or understood,
perhaps with the help of an RV service shop and technician. No matter the reason though, EasyTouch
RV can warm the coil again so that cooling resumes as quickly as possible.
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©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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