Is this a replacement for the 1F83 0422? If not, what is? If so, will the old 1f83 wall plate work?

This unit is not the one I ordered, so I returned it because it did not fit. Sorry I cannot answer your question. You would need to contact a qualified supplier for this question.

My thermostat's back light is on all the time. Is this correct ? Manual shows a "back light button" on the top of the thermostat. This does nothing

The one I replaced was also on all the time. So I did not even question the fact that it's on all the time. Not sure, sorry.

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Emerson 1F85U-22NP Non-Programmable Thermostat

Emerson 1F85U-22NP Non-Programmable Thermostat

Product ID: 650649078

Details

Brand
Emerson
Controller type
Hand Control
Model name
80 Series
Product dimensions
16.3D x 15.2W
Special features
Auto Lockable

📺5-inch backlit LCD display

🔒Keypad lock & temperature limits

🔧Easy installation with built-in level

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28417 som

Duties & taxes included

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Sold byAmazon KyrgyzstanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌡️ Effortless comfort control, designed for your smart lifestyle.

SECURE SMART CONTROLS - Lockable keypad and customizable temperature limits keep your settings safe and precise.
PLUG PLAY INSTALLATION - Built-in level and pluggable terminals make setup a breeze—no HVAC pro needed.
INTUITIVE MANUAL OPERATION - Non-programmable simplicity with a customizable 'Away' button for quick energy savings.
CRYSTAL CLEAR 5 INCH DISPLAY - Big, backlit screen ensures effortless temperature reading anytime, even in low light.
DUAL FUEL READY NO EXTRA SENSORS - Seamlessly supports multi-stage heat pumps and dual fuel systems without extra hardware.

The Emerson 1F85U-22NP is a sleek, non-programmable digital thermostat featuring a large 5-inch backlit LCD display, easy installation with built-in leveling, and advanced security with keypad lock and temperature limits. It supports multi-stage heating/cooling and dual fuel systems without additional sensors, powered by 24V or batteries. Perfect for professionals seeking straightforward, reliable climate control with a modern edge.

Specifications

ASIN	B017ES1OVO
Additional Features	Auto Changeover, Lockable, Low Voltage, Temperature Display
Backlight	Yes
Best Sellers Rank	#186,815 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #549 in Home Thermostats & Accessories
Brand	Emerson
Brand Name	Emerson
Color	White
Colour	White
Control Method	Touch
Control Type	Button Control
Controller Type	Hand Control
Controller type	Hand Control
Customer Reviews	4.5 out of 5 stars 91 Reviews
Display Type	LCD
Global Trade Identification Number	00786710552427
Included Components	2 AA Batteries, Thermostat, User Manual
Item Dimensions D x W x H	16.3D x 15.2W x 10.8H centimeters
Item Type Name	thermostat
Item Weight	0.61 Pounds
Manufacturer	Emerson Climate Technologies
Manufacturer Part Number	1F85U-22NP
Model Name	80 Series
Model Number	1F85U-22NP
Model name	80 Series
Mounting Type	Wall Mount
Number of Batteries	2 AA batteries required. (included)
Power Source	Battery Powered
Product Style	1F85U-22NP (new model)
Product dimensions	16.3D x 15.2W x 10.8H centimeters
Screen Size	5 Inches
Shape	Rectangular
Special features	Auto Changeover , Lockable, Low Voltage , Temperature Display
Specific Uses For Product	Heat Pump
Temperature Control Type	Manual
UPC	786710552427
Unit Count	1 Count
Voltage	24 Volts

Reviews

A**2

Simple to use - Nice larger readable screen

7.10.2024

G**K

Back light is bright and helps

16.12.2025

T**Z

Basic HVAC thermostat.

27.08.2023

M**S

Excellent Thermostat

9.04.2025

J**.

Thermostat Emerson 1F85U-22NP Non-Programmable Thermostat

31.08.2025

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28417 som

Duties & taxes included

In stock

Sold byAmazon KyrgyzstanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Kyrgyzstan.

Secure transaction

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