Question about Honeywell Programmable Thermostat Heater

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I have rth230b thermostat my snowflake icon for the central air keeps blinking and the air wont come on. whats the problem

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Posted on Jan 02, 2017

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SOURCE: RTH230B thermostat not working - nothing's happening

The 2nd combination is correct (w/ jumper). Wire nut or tape the blue wire. The snow flake shows it's going into cooling mode after a 5 min delay. If the AC is not coming on then the problem may not be the thermostat. If you don't have 24VAC between the red wire and the blue one the problem is at the furnace or it's supply. If you do, then check for 24VAC between the blue wire and Y on the thermostat(after the 5min delay) - if it's there the thermostat is calling for cooling. To check the heat, switch the thermostat to heat mode and use the W(instead of Y) on the thermostat(after the flame stops flashing).

Posted on Apr 02, 2009

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SOURCE: flashing snowflake on display

That is a Time delay normal to keep the condensing unit from turning of and on to fast really save the life of the equipment

Posted on Jun 17, 2009

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SOURCE: I have a blinking snowflake icon on my air

I have 2 identical units up and down. I have a Honeywell T8411R thermostat and Goodman heat pumps. The upstairs unit was low on refrigerant and was constantly freezing in the high heat and humidity of a NC summer. The blinking icon was telling me the unit had a fault and only the fan was running because the compressor was shut down. A few pounds of coolant fixed my problem. Check cooling tube coming out of the unit for ice, that means it is iced up all the way from inside the house to the outside. Also look inside your exchanger on the inside for ice.

Posted on Dec 27, 2009

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1 Answer

Air conditioning not working. Have White-Rodgers thermostat 1F79111, I think. Replaced batteries. Now have flashing signal like an asterisk. What does it mean?


Blinking snowflake means it's on time delay for cooling to come on (usually 5 minute time delay to prevent compressor short cycling). Solid snowflake means cooling is on

Aug 03, 2016 | White-Rodgers (Protech) White Rodgers...

1 Answer

What is the RTH230B snowflake indicate?


means it is running in the cooling mode a flame means heating

Sep 03, 2014 | Honeywell RTH230B 5-2 Day Programmable...

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Snowflake symbol and filter message


That symbol usually means that the a/c unit inside the house has frozen over and it won't start working again until after the ice has melted. I would recommend hiring a repair guy for it though. I had this problem and even after it melted the a/c would still go wonky from time to time. There's a part that you might need replaced on the outside unit.

Apr 30, 2014 | Heating & Cooling

2 Answers

I have a blinking snowflake icon on my air conditioner, my air will not work. My heater will work fine but the air will not come on


When the snowflake is blinking the thermostat in in a delay mode designed to protect your compressor. If it does not stop blinking in 15min the stat is bad otherwise something is wrong with the AC

Sep 26, 2009 | Honeywell Electronic Programmable...

1 Answer

On my honeywell rth230b thermostat, sometimes when i try to turn on the a/c, the snowflake will just blink and the a/c will not kick on. why does it do that?


They do that sometimes as a timing feature when going from heat setting the to cool setting or vise/versa. It should not do that when the thermostat is off and then you switch it to cool. Make sure the batteries in the thermostat are fresh. And make sure the thermostat is fully seated on the housing. Also check the wires are fully inserted into the connections on the thermostat housing and the wiring is correct.

Sep 14, 2009 | Honeywell Electronic Programmable...

1 Answer

Flashing snowflake on display


That is a Time delay normal to keep the condensing unit from turning of and on to fast really save the life of the equipment

Jun 16, 2009 | Honeywell Programmable Thermostat Heater

1 Answer

Snowflake blinking and air conditioner won't turn on.


If it is blinking it is in a 5 minute time delay.
It should settle to a steady snowflake after 5 minutes and come on normally.

May 21, 2009 | Heating & Cooling

1 Answer

RTH230B thermostat not working - nothing's happening


The 2nd combination is correct (w/ jumper). Wire nut or tape the blue wire. The snow flake shows it's going into cooling mode after a 5 min delay. If the AC is not coming on then the problem may not be the thermostat. If you don't have 24VAC between the red wire and the blue one the problem is at the furnace or it's supply. If you do, then check for 24VAC between the blue wire and Y on the thermostat(after the 5min delay) - if it's there the thermostat is calling for cooling. To check the heat, switch the thermostat to heat mode and use the W(instead of Y) on the thermostat(after the flame stops flashing).

Apr 02, 2009 | Honeywell Programmable Thermostat Heater

1 Answer

Snowflake blinking in one zone


i saw that my snowflake was blinking while the unit was in the 5 minute lock out state (after power up), but went to steady after that.

Jun 14, 2008 | Honeywell Heating & Cooling

2 Answers

My Honeywell rth230b thermostat continues to give me a flashing snowflake signal and will not allow the AC to turn on.


Your snowflake should flash for about five minutes, that is the time delay built into the thermostat. It should stop after that and your system should begin to function.

May 28, 2008 | Honeywell Heating & Cooling

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