York S1-THPU433-S Dip-Switch Configuration
I am calling for cooling on my York S1-THPU433-S thermostat. However, both heating and cooling activate. What may be the issue?
Flashing Code 410 on PAC-YT53CRAU-J Remote Controller
I have a PAC-YT53CRAU-J controller and I’m noticing a code flashing between my two temperature settings. The code that keeps appearing is 410. What does this indicate?
Replacing Batteries on Honeywell TH8732WFH5002 Thermostat
My Honeywell TH8732WFH5002 thermostat's screen is suddenly blank. Does it have internal batteries that might need to be replaced?
How to Calibrate American Standard ACONT850AC52UA Thermostat
My American Standard's ACONT850AC52UA touchscreen is not working on the menu screen. How can I activate the buttons or is there a lock out functionality?
Mitsubishi Electric MHK2 Thermostat Stuck on WAIT
My MHK2 thermostat is stuck on wait and after I performed everything to reset it numerous times, nothing happened. What can I do?
Venstar T1100RF Thermostat Control Issues
I have an old Venstar T1100RF controlling my HVAC system. It is working poorly and the keys only intermittently perform their functions. Two dashes appear on the screen when any button is pushed. I got a new Totaline P474-1100REC unit and replaced it,
American Standard ACONT302 Thermostat Backlight Issues
I recently bought an American Standard ACONT302AS42DA Thermostat. The backlight however, does not work. How can I get the backlight to work since the batteries are new and this does not help. Everything else about the thermostat is fine.
Troubleshooting Trane XL850 Thermostat Unresponsive Screen
I cannot adjust the temperature on my Trane XL850 thermostat. The touch screen is not responding. Does that mean I need a to get a new thermostat?
Kumo Cloud App Loggin Issues
My Kumo Cloud App is not allowing me to log in. I have tried resetting the password but I am not receiving the reset email. What can I do since I am unable to use the Mitsubishi Electric PAC-USWHS002-WF-2 Wi-Fi Interface?
How to Fix Emerson 1F83C-11PR Blank Screen Issue
My Emerson 80 Series thermostat (1F83C-11PR) just went blank after 2 years. Nothing is being displayed on the screen. How can I get the screen back to working? I am not sure whether the thermostat is battery-operated since I can still control the unit
Mitsubishi Electric PAC-USWHS002-WF-2 Factory Reset
I am having trouble with my PAC-USWHS002-WF-2 interface where the Kumo Cloud app does not find my zone. Where is the factory reset button on this Wi-Fi interface unit?
Honeywell Pro 2000 Thermostat Reset
I am having issues with my TH2110DH1002 Honeywell thermostat which is not working. I tried replacing the batteries but this is still an isse. What can be the solution, do I need to reset. If so, how?
Fujitsu UTY-TTRXZ1 Third-Party Thermostat Converter Error
I have encountered an issue with my Fujitsu UTY-TTRXZ1 after installation. It is displaying an error code as shown in the manual guide(Thermostat Converter Error 10.2). When the converter displaying the error is connected, the AC will not run. I would
How to Unlock Sensi 1F87U-42WF
How can I manually unlock my Sensi 1F87U-42WF smart thermostat using the keypad when it is in the LOCK mode on the APP? There is no internet connection at the moment.
Fixing Braeburn 1020 Display Issue
My Braeburn 1020 thermostat jumps ON and OFF constantly. How can I fix this?
How to Reset Vive Comfort TP-S-755
My Vive Comfort TP-S-755 thermostat does not allow me to put a temperature that I want. How can I reset the thermostat?
coaxial cables frequency compatibility
In satellite communication, we have the low noise amplifiers (LNA) and the low noise block converters (LNB) at the receiver on the dish. Since, we know an LNA will amplify the weakened satellite signal at the receiver without degrading the SNR value and
VPL24-210 Transformer Replacement
I am having a problem with my add-a-wire box on my furnace which is buzzing. Not sure about the cause but it has been that way since we had a short power outage.
Mitsubishi Electric MHK1 Connection Issues
I have a Mitsubishi Electric MHK1 thermostat. It says, "No signal wait". I have changed batteries but this does not help. What can I do?
Trane XL824 Wi-Fi Connection Issues
My Trane XL824 thermostat is not connecting to Wi-Fi. It was initially connected but after a brownout there was no connection. What do I do?
Fixing Heat Issues using Sensi 1F87U-42WF Smart Thermostat
I have a Sensi Smart thermostat model 1F87U-42WF which is not turning on the heat on my system. What can I do to ensure that the heat is on?
Antenna connections/connector
I purchased a12dBi Yagi Antenna for US LTE Bands (here). Not sure what is needed to connect this antenna. I could not find a connector.
Cisco Catalyst 2960S-24PD Layer 2 - Gigabit Ethernet Switch, with 24 POE ports
We have reworked our network to have the Cisco Catalyst 2960S-24PD Layer 2 - Gigabit Ethernet Switch, with 24 POE ports. This switch will offer data and power connection to different Wi-Fi access points and IP phones. The switch is connected to a reliable
Fixing American Standard's ACONT302AS42DA Frozen Screen
My American Standard ACONT302AS42DA thermostat is frozen. I cleaned off the battery compartment and changed the batteries but still no luck. It doesn’t light up once I push it into the wall mounting, but when I have it away from the wall it works fi
Unpairing and Pairing Venstar T200O Thermostat with ACC-TSENWIFIPRO Sensor
I have an ACC-TSENWIFIPRO sensor which was connected for a little while. We had some issues with WiFi and it disconnected. After we fixed the WiFi, it wouldn't connect. My thermostat is a Venstar T2000. Is there another way to unpair and pair this sensor
Braeburn 5400 Does Not Achieve Setpoint Temperature
I am having a hard time getting my Braeburn 5400 model to come on. When I raise the temperature it goes up but it can't get to my set point. I'm freezing!
Troubleshooting Error Code E7 on Gree Units
When I position the unit to heat I'm getting an E7 symbol where is shows temperature but it's not heating. Do I need to call my technician?
Emerson Clicks Turning ON & OFF
My 1F85RF-275 thermostat was flashing. It stopped flashing and is now clicking as if it's trying to turn on but is unable to. Please help.
Battery Sizing for Solar Installations
There is this formula for sizing batteries for a solar installation: Battery size in Ah = Total Wh per day/ (Battery Loss x Battery Depth of Discharge x Nominal Batter Voltage). What is the difference between battery loss and depth of discharge? Why do
Fixing Honeywell's TH4210D1005 Blank Display
Hello all! I want to check what the problem is with my Honeywell TH4210D1005 thermostat. The display is suddenly blank.
Honeywell TH6320WF2003/U Backlight Disabled
I have Honeywell TH6320WF2003/U. All of a sudden, my thermostat's backlight is not working. What may be the problem?
Honeywell RCH9300WF Thermostat Screen Gone Black
There was a message on my RCH9300WF thermostat, "has no power to run system". Now the screen has gone black and there is no response.
FJ-RC-WIFI-1NA Communication Error with Fujitsu System
I have set up Fujitsu FJ-RC-WIFI-1NA Wi-Fi Module for use with my #AUU12RLF unit. However, I am getting an error; Error IH1: Error in the communication of IntesisHome device with the AC unit. I have already checked the compatibility table, so compatibility
Removing Temperature Hold on American Standard ACONT302AS42DA Thermostat
Hi all. I am having trouble removing the temperature hold on my American Standard ACONT302AS42DA programmable thermostat similar to the one here, https://shop.rfwel.com/american-standard-acont302as42da-7-day-programmable-thermostat/. Any help?
External GPS antenna for Verizon enterprise
I Need help finding an external gps antenna and cabling for a Verizon enterprise v3 network extender. Current one is an indoor one. I need to get the GPS antenna on the roof of our building.
Issues Connecting FJ-IR-WIFI-1NA to Starlink Router
I own model FJ-IR-WIFI-1NA and am having an issue connecting to my Starlink router's Wi-Fi. I get the yellow and green blinking lights, unknown error, also green and red flashing LEDs. It is working fine with my Netgear Extender. Any suggestions?
Room Temperature Varies from Thermostat Settings
My room temperature is different from what I have set on my Trane XL824 thermostat. I have measured the room temperature with a thermometer and the variance is 7 degrees. Any insights?
Mitsubishi Wireless Interface 2 (PAC-USWHS002-WF-2) Wi-Fi Communication Issue
Hi all, my Mitsubishi Kumo Cloud Interface does not communicate with the Wi-Fi router. I have tried out troubleshooting including installing a new router but I still get the error message that Kumo Cloud does not connect to the router. Can any specialists
Fixing Mitsubishi Wireless Interface 2 (PAC-USWHS002-WF-2) Connection Problem
Hello Pro HVAC'ers! My Kumo Cloud Wireless Interface PAC-USWHS002-WF-2 like the one in the link here (https://shop.rfwel.com/mitsubishi-electric-pac-uswhs002-wf-2-wireless-wi-fi-interface-control-2/) has a problem. LEDs don't light on anymore. They were
PAC-US444CN-1 Thermostat Interface- Mitsubishi Electric Trane
I've been deliberating on getting a mini-split preferably by Mitsubishi and was wondering if there is a way to connect with a Nest thermostat. Could Mitsubishi PAC-US444CN-1 (https://shop.rfwel.com/mitsubishi-pac-us444cn-1-thermostat-adapter-interface/).
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