Question about Honeywell Programmable Thermostat Heater

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How do I operate the RLV430 Thermostat, I need some guidance

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  • sjazzi Oct 07, 2008

    How do I set the thermostat to Farenheit?

  • Anonymous Nov 12, 2008

    need help programing



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How do I set the tempature when the time is blinking and it never blinked and when set the temp it all 0 out

Posted on Jan 03, 2009


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Honeywell rlv430 is wired in correctly, yet one baseboard heater is always on, regardless of the temp Its set at

Need to start with comparing the temp in the room to the temp the heater is set to. A t-stat will read +/- the actual temp. If their not even close, then the heater will run trying to reach the temp the t-stat is set to.

Mar 06, 2011 | Honeywell Programmable Thermostat Heater

1 Answer

Installing a cadet softheat hydrondic baseboard heater on 12-2 wire on 20 double switched breaker. Is this possible? I was told I could change the white wire to black giving me one black to each prong of...

Yes it is acceptable and common practice. You do not need a neutral on a 220 Volt circuit. Just wrap it with black electrical tape so anyone who gets into the wiring later will know that both are hot. This is accepted by the National Electrical Code.

Feb 13, 2011 | Cadet Manufacturing EBHA1000W The EBHA...

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Honeywell t stat rlv430 need to program to turn off every day at 700 am lower temp to 62 and on at 730pm raise to 70. need instructions on how to reset

WARNING: When the thermostat is reset, all parameters (clock, configuration

and schedules) return to their default settings.

?? Open the thermostat's door.

?? Press and hold the Pgm button.

?? Insert a pointed object (e.g., paperclip) in the reset opening.

Remove it when the thermostat's screen becomes blank.
?? Wait one second and release the Pgm button. for complet instructions

Jan 21, 2011 | Honeywell Heating & Cooling

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There is power coming in the Honeywell thermostat RLV430 however the display pad is always blank. Sometimes it goes on and keep flashing on and off and then goes blank again. I changed the thermostat...

Richard, when you say base board, do you mean the subbase where the control wires connect? I am thinking you just changed out the front part which is the stat, leaving the old subbase on? If this is the case, make sure you have 24 volts at the R and one of the other terminals, but change out the subbase as this is where your problem would be, all of the displays circuitry is in that section of the thermostat. This will solve your problem. I take it this stat has no batteries for the display? If it does, change them out with good new ones. Please contact me if you need more help. Use the comment box, so I can check it when I can.
A/C, & Heating Contractor
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Nov 20, 2010 | Honeywell Programmable Thermostat Heater

2 Answers

I am installing a new thermostat for my baseboard electric heat. The electric box has 2 wires comming into it. So I have 2 black, 2 white and 2 ground. The old thermostat had a place for all 4 wires (one...

One wire is "IN" the other is "OUT" A Thermostat works by "Breaking" the "Phase" line. It is just that simple. You usually have a pair of wires that connects, on the "Hot" side, to the always power ON line, & neutral. The Circuit, or Load, on the "Cold" side, has a a pair of contacts that open & close depending on Thermostat, in series with that conductor. Hot Contacts Cold P In-------------------><-----------------P Out

Mar 04, 2010 | Honeywell Programmable Thermostat Heater

1 Answer

Thermostat burning walls

your thermostat may not be made for electric heat, if not then your wiring is overloading the thermostat causing the wires to heat up.

May 27, 2008 | Honeywell Programmable Thermostat Heater

2 Answers

Thermostat installation

On paul 306, I don't have any info on you're system, but the old thermostat that has the smaller wires with the colors you described is a low voltage (24volt) controls. The new one you purchased sounds like it is for a system that is made for line voltage (120 volts or more) connecting this to the unit may have bad results. This also may apply to GUEST.
COACOOCHEE, the white and black coming into the box is the line, even though white should not be used for line, the connections for the other side of the thermostat is the load. The new thermostat you have be a single pole break as opposed to the old one may be a double pole. You should have a meter to check the voltage coming into the box, it may be 120 or 220 depending on what you have. Without any more info I cant be sure, but you may be able to connect the black wires to the switch and the white together. But it would be wise to test with a meter to be sure before doing this.

Nov 16, 2007 | Honeywell Programmable Thermostat Heater

2 Answers


get in front of one of the thermostats and call Honeywell at 800-341-0110. If you are prompted, tell them you are an installer and seting up the thermostat for the homeowner.


Good Luck.

Oct 23, 2007 | Honeywell Programmable Thermostat Heater

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