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My clock on my honeywell smartfit has frozen now the system will not work is it repairable

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Before replacing the unit try replacing the batteries. After you replace the batteries push the run program button and see if the system comes back to life:)

Posted on Jun 27, 2008

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How to set the clock for honeywell thermostat T6650A


That link (from Honeywell), does not have the manual for the T6650A, unfortunately.

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Ive currently got a honeywell smartfit thermostat control which is displaying F24 which ive been told means i need to replace the control panel, again!! ive already replaced it once not so long ago (approx...


There are other universal replacements but if it was me I would stick with the honeywell parts. I know they are more expensive but in your instance where you already have a problem that is causing the control panels to fail I'm afraid you would make it worse by using other then factory replacements.Thank you

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Have an approx 20 year old Honeywell ducted air conditioning unit in my just purchased villa. It is not working. Am having trouble finding someone to quote to repair it. I live in the southern suburbs...


If its 20 years old it would benefit you much more to replace it, see the energy star website and it has information on when replacement is the best solution. Over 10 is the general rule of thumb if it over 10 then replacing the equipment will benefit you so much more than a repair. Also honeywell doesn't make equipment anymore and i cant say vie seen one but that doesn't mean its not out there, vie seen Chrysler air conditioners in houses and honeywell dose make controls but not equipment anymore (in fact this is the first honeywell unit vie heard of).

Oct 01, 2010 | Honeywell Air Conditioners

1 Answer

Today the temp on thermostat was on 50 and we did not do this. After trying to increase temp with up button it seemed to be frozen. after taking thermostat off wall and placing it back i was able to...


HONEYWELL WEBSITE:
Go to honeywell.com
Under red welcome sign
Bottom red highlighted box literature/image search
Type in thermostat model number
Click on arrow to right
Then click on the PDF files owners manual / installation instructions
If you can’t find what you want, the bottom left and bottom of web
Page, they have homeowners assistance and Home products to get the help you need.

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1 Answer

Honeywell Smartfit Control Unit


You need to either call an electrician if your unable to, or do not have the knowledge to troubleshoot electrical circuits, or, get a multimeter and see that power is coming to the furnace/heater.

Reply back what type of heating unit you have (gas or electric), any other symptoms you've observed (including has the system ever operated before, and what changes may have been implemented to cause it not to operate) and the model, and we can be of more help to you.

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How to wire in a honeywell 9400c timer clock 4 ch


One of these wires is contains permanent live, neutral and earth. The other wil be heating on and hot water on, the earth on this wire will probably not be used.
you will have to trace the wiring back or test it!! Be carefull!!

Dec 11, 2008 | Air Conditioners

1 Answer

I have a honeywell smartfit but it keeps coming up with a F4 error


I had exactly the same problem. F4 code says the control valve has jammed --- but it hadn’t.

I ended up having to swap out the room controller and the base unit (I bought the pair since it was winter and I couldn’t ‘eff’ about)

On investigating (well, you have to don’t you?) I could find no obvious fault but did notice that a large electrolytic capacitor was across the actuator motor.

Since these things work by reversing the supply polarity to the motor to drive the actuator one way and the other it strikes me as strange that a polarity sensitive component, one that must be always connecter positive to positive, is used in the way that it is.

Bottom line, tough luck, mate. Replace the units.

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1 Answer

My central heating system comprises a worcester bosch system boiler and honeywell smartfit controls. The problem I am having is that the central heating doesn't seem to knock off at the preset temperature...


You could possibly have an ignition problem. The controller will go into a lock-out condition if flame is not established. Turning the temperature control down and then back up may be serving to reset the control system so it tries again.

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