I have a comfort mini split remote trying to figure out how to change from Celsius to Fahrenheit on the display.

look at this video
https://youtu.be/YglvRKuMc_4?t=92
it sort of is what you are saying
but there seems to be a sequence to it from watching the video
not sure if exact same model remote ?

There is a formula for converting Celsius to Fahrenheit temperatures.
[Celsius] times 9/5 plus 32
or
(°C) * 9/5 +32 = Fahrenheit

For example,
20 in Celsius needs to be converted,

20 * 9/5 + 32 = 68
Hence, 20 Celsius is 68 Fahrenheit.

Kudos!

Good Afternoon Friend,

I understand you are trying to change the display from Celsius to Fahrenheit. To convert from one to the other and back, press and hold the " TEMP/TIMER" Up arrow and Down arrow buttons together for 3 seconds. I ask that you please follow up with a comment on the post, at your convenience, to advise if further troubleshooting is needed or if your appliances status has changed successfully. Hope this is helpful.

-Best Regards-
WP

Following amazon item link can be compatible for your Soleus ZHF/LW-17-2
What's important is that it display in Fahrenheit.
Other ebay or amazon sellers sell replacement in Celsius

Amazon com Replacement for QUIETSIDE Air Conditioner Remote Control Model...

To change from Cecilius to Fahrenheit on the remote control, hold both the + and the - simultaneously and this will enable you to toggle between C and F. You will need to do this each time you change your batteries.

Try the following. Cheers, Joseph

°F/°C CONVERTIBILITY - Press and hold SET TIME and

HOLD TEMP buttons until the temperature display is in

Celsius (°C). To display Fahrenheit (°F), repeat the pro-

cess. 5:30AM.)

To change your heater display from Celsius to Fahrenheit: press and hold the "down" button and the "enter" buttons simultaneously for 5 seconds and release.
- VS

To change your heater display from Celsius to Fahrenheit: press and hold the "down" button and the "enter" buttons simultaneously for 5 seconds and release. - VS

You can switch the temperature mode between Fahrenheit to Celsius as follows:
While depressing the AUTO button, depress the OFF button for 3 seconds or more. The display will change from Fahrenheit to Celsius, or from Celsius to Fahrenheit."