Locating Temperature Sensors on Mitsubishi Minisplits
I have a new install of Mitsubishi mini-splits. One single zone system and one 3-zone system.
On each of the units, I’ve added the wi-fi adapter to connect to Kumo-cloud…which also interestingly seems to be the only place I can see a reading of what the unit thinks the current temp in the room is. (is that true or am I missing something?)
Regardless, I’ve found that one of the rooms is CLEARLY way off. It’s the warmest room in the house, yet shows to be cooler than any of the other rooms. It’s probably 10-15 degrees off.
Where is the actual temperature sensor on these things? Any recommendations for a more accurate read without hannging a thermostat in each of 4 bedrooms?
Any sugestions on how to address this with Mitsubishi and what resolution to expect?
Thanks!
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You can get kumo cloud wireless temp humidity sensors, and set the unit to control of them, or get a MHK2 thermostat (I have the earlier MHK1), it displays the sensed temperature and setpoint, and is wireless allowing you to place it optimally. Depending on unit placement, you may have air short cycling into the return (where the sensor is) skewing the temperature reading. Have you tried fiddling with the vane angle (turn them down a bit to avoid short cycling), maybe bump up the fan speed. I suppose it might be possible the sensor is installed incorrectly in the unit.
Does the temperature read correctly when not heating or cooling (fan only)?
Set a thermometer on the intake for comparison.
Describe the install in that room, maybe with pics.
It is possible that it is getting bad air circulation patterns due to an odd install and is not effectively 'seeing' the room
Hi Dave,
Although this Q&A thread centers around a Fujitsu model, there is some relevant discussion that may shed light on your situation.