Honeywell Rth2310b 5-2 Day Programmable Thermostat - Answered Questions & Fixed issues

spray with water when fired

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Honeywell... | Answered on Mar 03, 2015 | 58 views

Ok look in the air handler in you might just have a blown fuse it has happened to me before.

Honeywell... | Answered on Oct 14, 2014 | 104 views

Not maintaining the set temperature is not always a fault of the T-stat. I'm not sure about what you're saying because there could be a problem with the other parts of your unit. Remember, the T-stat is only a switch, but look at any of these anyway

Honeywell... | Answered on Dec 14, 2013 | 399 views

There is a Span setting on the thermostat causing that, most newer thermostats have a adjustable span from 1 to 5 degrees, if your thermostat has a option menu, scroll through the options and see if you find a option called Span if its at 3 or 4, change it to 1 or 2, then your furnace will cycle on sooner. If you have your owner manual still for it that should show you how to do it.

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Honeywell... | Answered on Nov 18, 2013 | 158 views

The furnace may not be getting power. It could have been turned off when switched over from heating to cooling.

Honeywell... | Answered on Oct 27, 2013 | 136 views

I wonder if they shorted a wire a during install. That is where I would begin.

Honeywell... | Answered on May 14, 2013 | 789 views

More than likely, this is what you have:

Red- Power- (RC/RH)
White- Heat- (W)
Green- Fan- (G)
Blue- Cool- (Y)

Usually, the only times you need more than 4 wires are:

1. You have a HeatPump system.
2. Your new digital thermostat does not use batteries, which then you have to have a common wire to power the thermostat.

Honeywell... | Answered on Jun 10, 2012 | 314 views

Thermostats have multiple issues when you start checking them against thermometers.

1) the built-in thermometer may not match the set temperature because one or both need calibration. Compare the built-in to an external thermometer and see if there is any adjustment to make them match. Record the setting on the thermostat and the temperature when it starts and stops -- there should be a 1-3 degree range which may be adjustable. The set point should be in the middle of the on-off temperature spread.
2) the thermostat has a heat anticipator setting which may be set poorly -- turning off the heat before it reaches the set point - the fan normally runs for 1-2 minutes after the heat source is off. The anticipator is used to stop heating before reaching the set point as there are still a lot of BTUs coming out during the fan run-down -- usually 1-2 minutes.

Honeywell... | Answered on Oct 16, 2019 | 38 views

Actually the 24 hour time makes it easier to correctly set the thermostat for when you want it to change setting.

Honeywell... | Answered on Oct 03, 2019 | 44 views

No battery backup in this thermostat.

Honeywell... | Answered on Sep 25, 2019 | 51 views

You need to remove the thermostat from the wall plate to change the battery. Look on the bottom of the thermostat for a locking screw. Loosen this screw with an appropriate screw driver. Then pull the bottom of the thermostat away from the wall plate and then lift up from the bottom. When you put the thermostat back on, line up the brackets at the top of the thermostat with the slots on the wall plate. Then push the thermostat against the wall plate and tighten the locking screw.

The documentation for the Honeywell RTH2300B1012/U is available on the product page: . Click on the Manuals tab. See page 4 (page 6 of the PDF) for removing the thermostat from the wall plate. See page 9 (11 of the PDF) for replacing the batteries and putting the thermostat back on the wall plate. The current link to the manual is .

I hope this helps.

Cindy Wells

Honeywell... | Answered on Sep 13, 2019 | 46 views

A manual is what you need to unlock and reprogram the schedule. Keep off the set up steps for the thermostat, only the scheduling and security steps.

Honeywell... | Answered on Sep 12, 2019 | 31 views

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