Recent Topics
ACC-VWF2 Wi-Fi Module Compatibility
I'm looking to buy a Venstar T3800 thermostat and would like to get the Wi-Fi module as well. Is ACC-VWF2 which seems to be the option compatible with both the Voyager and Explorer lines?
Can Mitsubishi Electric MCCH1 Replace MRCH1 Thermostat?
Will the Mitsubishi MCCH1 Redlink Controller directly replace an MRCH1 control without any additional hardware? I have 4 zone MRCH1 thermostats that I need to replace.
Programmable Thermostats for 220V System
I am looking to get a programmable wireless thermostat that can connect to 220V HVAC system. Any options?
Braeburn 1025NC Powering Options and Battery Replacement
Is the Braeburn 1025NC able to run without battteries? There is a low battery signal on the thermostat's screen. How do I go about replacing the battery?
Mitsubishi Electric MIFH1 Receiver Replacement
I have seen that the Mitsubishi MIFH1 receiver has been replaced by the MHK2. If that is the case, can I get only the MIFH2 to replace it so that it can work with my MRCH1?
Cancelling the Weekly Timer Operation on Carrier KSACN0701AAA Controller
I bought a house with the Carrier KSACN0701AAA wired controller which seems to have the weekly timer function ON. Is there a way that I can cancel this weekly timer since I do not need it?
Wi-Fi Adapter Option for Midea DLFSFBH12XAK
Out of the available Wi-Fi interfaces, I was wondering if there is one compatible with my Midea DLFSFBH12XAK floor-mounted indoor unit. I appreciate any help!
Disabling Away Setting on American Standard Thermostat
I have an American Standard ACONT724AS42DA thermostat which is on "Away" setting. How do I remove this setting?
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?
Regional Variations in Fujitsu Wi-Fi Interface Model Numbers (MPNs)
I'm in the US and I am looking to get the difference between the Fujitsu UTY-TFSXZ1 and UTY-TFSXZ2 if any. They look alike in all aspects.
Integrating Mitsubishi PAC-IT51AD-E Adapter with PAC-USWHS002-WF-2
I have the Mitsubishi Electric PMFY-P08NBMU-ER5 (8000K) unit, and I’m looking to buy a Wi-Fi interface control. From my research, the PAC-USWHS002-WF-2 seems to be the correct option. Can you please confirm if I also need the PAC-IT51AD-E IT Signal
Battery Replacement on American Standard ACONT802AS32DA Thermostat
I'm trying to replace the battery on my American Standard ACONT802AS32DA but can't figure out how to remove the cover. Could you provide instructions or a video for this?
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?
Alternative to Mitsubishi Electric PAC-USWHS002-WF-2 Kumo Cloud Adapter for Remote Control
I have two Mitsubishi Electric SVZ-KP18NA indoor units paired with the matching heat pump. I want to control them over Wi-Fi, but I’m unsure if Mitsubishi’s Kumo Cloud would be the best option. Currently, I use a Wi-Fi thermostat that lets me control
Is WPS Required to Set Up Mitsubishi PAC-USWHS002-WF-2 Wi-Fi Adapter?
Does my router need to have the WPS button so that I can configure and use the Mitsubishi Electric PAC-USWHS002-WF-2 Kumo cloud adapter? Can I also see a perfect video that can guide me?
How to Turn OFF Carrier TC-PHP01-A Thermostat Backlight
I have a Carrier TC-PHP01-A thermostat which is electrically powered. How can I turn OFF the backlight which seems to be continually ON. May there be an issue with my thermostat?
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.
Choosing Between Honeywell TH6220WF2006 and TH6320WF2003 Wi-Fi Thermostats
My current control panel is a Honeywell HZ432, paired with two TH5320R1002 thermostats and a THM4000R wireless adapter. I'm looking to upgrade to Wi-Fi control and need to understand the differences between two Honeywell Wi-Fi thermostats: the TH6220WF2006
Using MHK2 Thermostat and PAC-USWHS002-WF-2 Kumo Cloud Adapter Simultaneously
I have a MSZ-GL12NA indoor unit with the Mitsubishi Electric MHK2 Wireless Remote Control kit installed. I want to add Wi-Fi control through the Kumo cloud app but also keep the wireless wall thermostat. Can this be done? If so, what part do I need to
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?
Airzone Aidoo AZAI6WSPMEL vs AZAI6WSCMEL Wi-Fi Adapter
What is the difference between AZAI6WSPMEL and AZAI6WSCMEL adapter? I want to use any for my Mitsubishi indoor units and I see that both are compatible. Do they also support louver control?
Changing Temperature Reading on Mitsubishi Electric Remote
I just bought a new Mitsubishi remote, but it is set on Celsius. Is it possible to change to the temperature reading to Fahrenheit? I cannot use it as is.
How to Set Automatic Cooling Mode for Trane XL824
My Trane XL824 Wi-Fi thermostat has a 1 degree varience which is understandable. However, I want to know how to have the thermostat to switch automatically to cooling once 28 degrees Celsius is reached. Help!
Outdoor UPS for PoE and 1 Gbps Applications
We need a outdoor UPS with projected full load (<60 W total) for 40 minutes. This is to drive IEEE 802.3af Power over Ethernet to 2 loads requiring both PoE and 1 Gbps interconnection (additional ports a plus but not required). What best option can you
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?
Overriding Honeywell TH4110U2005 Thermostat Program Schedule
I have program schedules on my TH4110U2005 thermostat which were set up by the installer. How do I temporarily or permanently override the schedule?
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
Honeywell TH2110DH1002 Battery Replacement
I have a Honeywell TH2110DH1002 thermostat whose batteries I need to replace. How do I get the cover off? Pulling it will break the controls at the bottom.
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?
FJ-IR-WIFI-1NA vs FJ-RC-WIFI-1NA Wi-Fi Adapter Connection
I have 2 indoor units, which I am looking to make Wi-Fi enabled. I am considering FJ-IR-WIFI-1NA and FJ-RC-WIFI-1NA. Do these two have an internal antenna somehow? Also, are they connected next to the existing wall mounted wired control or next to the
Difference Between Mitsubishi Electric PAR-41MAAU and PAR-40MAAU Thermostats
While looking for Mitsubishi Electric controller, I see the PAR-41MAAU and PAR-40MAAU thermostats which look similar. What is their difference?
Fujitsu AUU9RLF Wi-Fi Control Options
I have a three Fujitsu AUU9RLF ceiling cassettes with a wired wall mounted controller. What parts (Module, etc) do I need to make this older units Wi-Fi controlled?
Honeywell RedLINK THM6000R7001 Powering
Can anyone tell me if the Honeywell RedLINK gateway (THM6000R7001) is POE compatible or needs a separate power supply? Also, is my Honeywell THX9421R5021WW compatible?
Humidity Mode on Gree Remote
I have a Gree 30510568 remote controller with the humidity mode. Is it used to add humidity in winter or to remove it during summer? Basically, how does that work?
Verizon Wireless Home Phone LVP2 (white box)
I have the Verizon Wireless Home Phone LVP2 (white box) and was asking RfWel for the cables to add external antenna ports to the LVP2. After opening up the unit, there are two kinds of RF connectors. See attached photos: qty=1 a WiFi antenna qty=2 a transmit
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?
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