Recent Topics
Fixing Room Temperature Higher than Setpoint on Pro1 T621-2 Thermostat
I keep setting the heat on my Pro1 T621-2 thermostat to 70 but it gets hot upstairs. When I look it has heated to 77. What can I do? May calibration be an issue. Can that help?
MHK1 MAC ID and MAC CRC for Total Connect App Setup
I have installed my MHK1 thermostat and everything is linked up from the mini split to the RedLink but I am unable to load it into my Total Connect App. The app keeps asking for the MAC ID and MAC CRC. Where can I find this information?
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
HPN4007D
Is the HPN4007D power supply model MIL-STD-461 compliant?
solar array sizing
I have been contemplating a solar installation for a barn here in Key West, Fl. My plan is to do my own research on equipment need and power consumption, so far so good. My question to anyone here is on what is preferable between a 12V or 24V DC installation,
Zhaga 18 and ANSI C136.10
I have been seeing a lot of conversation on the Zhaga (Book 18 Standard) being a replacement for the NEMA ANSI C136.10 receptacles. What's the possibility and what would be the fate of installations the C136.10 standard luminaires, photocontrols and power
Normal photocontrol Operation
For the PHTCELTAP light pole tap, I just want to make sure, after installing this unit between (3-pin) twistlock photocell and light fixture, would photocell still function as normal, for example, turn lights on at dusk and off at dawn?
Passive PoE
Passive PoE devices are way cheaper than active ones from my research. I've seen this blog: https://support.rfwel.com/portal/en/kb/articles/poe-introduction My question is on the possibility of identifying my device power requirements and just getting
Commercial Venstar Thermostats with Ethernet Option
I want to set up 20 commercial thermostats all with ethernet and I do not want to use a paid monitoring service. Which of your Venstar thermostats would you recommend?
Power Tap Grounding
For any of these, do we have a model with ground connection? Meaning could I have a hot, neutral and ground? I cant seem to find or confirm the presence of grounding in some units like the FP285A. Is the grounding receptacle shown in the image "fake"?
3 Pin Mini-Link Power Taps
For the following units, what is the terminal allocation for the 3 pins?
Coaxial Cables Degradation
I have an LMR 400 series (75ft. with a surge device just before it enters the house) cable in use for about 2 years now, does the cable degrade over time and if so what are the timelines I should work with before having it replaced?
Consideration for Coax Cable
A follow up to an earlier question is what should I consider when selecting a coaxial cable?
Coaxial Cables
What is the difference between coaxial, triaxial, and twinaxial cable? Is the construction the same?
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
Maximum allowable distance between my PSE and PD
I need to an install an access point (Preferably the Meraki Go) to improve coverage at a site approximately 300ft away. Would a POE switch deliver power and data reliably over this distance? And if so would you recommend a specific PSE? or any other
How to Disable Temporary Override on Trane XL824
After our service, I realized there is a Temporary Override message on the screen. How do I get rid of this? Any ideas?
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!
How to Start and Reset Pro1 T905 Thermostat
Hi all! Does the Pro1 T905 need batteries? Also, how can I start and reset it?
Controlling one Indoor Unit using MHK2 and PAC-USWHS002-WF-2
I have 3 zones so I would need to install one of these PAC-USWHS002-WF-2 (https://shop.rfwel.com/mitsubishi-electric-pac-uswhs002-wf-2-wireless-wi-fi-interface-control-2/) per zone, is that right? Also will using this affect my control using MRCH2?
Mitsubishi PAR-40MAAU for Multiple Indoor Unit Control
My house has 7 rooms and each room has a wired controller for the radiant heat and PAC-USWHS002-WF-2 Kumo Cloud units for the minisplits. I'm wondering if there is any way to share a wall thermostat? I know of the adapter that allows you to wire the minisplit
Mitsubishi Electric Third Party Thermostat Adapter
I have an MSZ-GS30NA air handler and looking for a compatible Wi-Fi interface. In the diagram on the listing here (https://shop.rfwel.com/mitsubishi-electric-pac-uswhs002-wf-2-wireless-wi-fi-interface-control-2/), I see the MIFH2 component. Is that a
Emerson's 1F83H-21NP Thermostat Programmable Version
Our old HVAC system was replaced and the thermostats provided were the Emerson 1F83H-21NP non-programmable units. However, I prefer programmable thermostats. Which one that looks similar can I replace them with without extra wiring needs?
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?
Carrier TB-NAC01-A Thermostat Modes
Does the Carrier TB-NAC01-A thermostat have a auto option?
Honeywell TH3210D1004 VS TH3110D1008
Is a Honeywell TH3210D1004 compatible with Honeywell TH3110D1008? Any differences?
Wiring Nest Thermostat to Replace Emerson 1F78-144
I have an Emerson 70 Blue thermostat (1F78-144) that I need to replace with a Nest. Can I get the wiring diagram for this?
Mitsubishi Electric PAC-USWHS002-WF-2 WPS Connection
Not sure of how to set up the Kumo Cloud PAC-USWHS002-WF-2. I am watching a video that shows it connects to the network via WPS. Is that the only way? I don't have WPS on my router.
Setting up Heat on Carrier TB-NAC01-A Thermostat
I have Carrier TB-NAC01-A thermostat. How can I turn on heat for the system?
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.
TC-24B-J vs TT-24B-J Centralized Controllers
I am looking at the TC-24B-J and TT-24B-J central controllers. What is their difference?
Fixing Incorrect Temperature and Stage 1 Showing on T721 Thermostat
I have put stage 1 showing on my T721 thermostat and want to clear it off plus it's say my room temperature is 82 which is not correct. How can I rectify this? I thought that I could program it to my phone and didn't know what I was doing. Thank you.
FP289A-120-CNB step down light pole tap
For your streetlight power tap adapters like the step down (FP289A-120-CNB), what is the warranty and what type of technical support is available to installers or maintenance personnel? What safety features are available to protect against electrical
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
Zhaga 18 Compatibility
Hello, For the Zhaga Book 18(ANSI C136.58) receptacles, can we have light pole taps like those found here: https://shop.rfwel.com/power-tap/
Battery Array Sizing
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.
Controlling Mitsubishi Unit with Dual Fuel Capable Thermostat
I have MSA-GS24NA working with PAC-USWHS002-WF-2 Kumo cloud adapter. What thermostat that has dual fuel capabilities can I use together with the interface? I have a third-party furnace.
Aidoo Wi-Fi to Daikin Sky Air or VRV
Hello, I need assistance with some guidance on how to integrate my Aidoo Wi-Fi to my VRV Daikin unit.
Airzone connection/assembly for Fujitsu 3 wire cases
How do I do connection for Aidoo Wi-Fi adapter for a Fujitsu unit with 3 wire protocol? Do I need to maintain the the thermostat controller?