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My honeywell ST6400A screen is blank even after me trying the reset button. It was okay yesterday, and now I have no hot water or heating! Help! thanks

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

justaplumber
  • 98 Answers

SOURCE: heater doesn't work

How old, at a guess, would the thermostat be?

This will help in figuring out what might be wrong.

Posted on Dec 23, 2007

SOURCE: Honeywell electronic thermostat malfunction for oil heat zone

Try changing the batteries.

Posted on Mar 04, 2008

  • 2 Answers

SOURCE: Stays in wash cycle Whirlpool Dishwasher Du1050SS

my repairman contacted whirlpool about my washing machine staying on
wash.. to his surprise.. and mine.. and his co=workers.. this is the answer,
it worked.. and we have never heard this before.

In your original istallation booklet it tells you to let the dishwasher run til its complete
the first time you use it as it may rinse twice... my original installation man told me this also.

however.. if you suffer a "blip" in your electricity.. it could put the little dishwasher "brain"
out of whack.. it can run as long as 3 to 4 hours on wash to reset itself.. if you stop it
(like others have mentioned.. and which I did also).. it doesn't complete the reset and it
will attempt to do it the next time..

answer?.. just let it go once as unnerving as this is.. it works.. They did mention that
if it went to 5 hours.. call your repairman because you need a new mechanism.

karen in Dothan

Posted on Apr 03, 2009

  • 148 Answers

SOURCE: Honeywell ST6400C - hot water not working

some digital thermostats do no not work with zone valves is this a new thermostat that you had installed

Posted on May 10, 2009

  • 9 Answers

SOURCE: t8411r1028 honeywell thermostat blank screen where would fuse be?

That thermostat should get power from 24V side of a transformer in the air handler. There should be a fuse in there on the PCB, but just as likely, there may be a 2-wire sensor in your drain trap that will shut it down if it senses water backing up in the drain piping. Clear that line from the outside of your house with a shop vac, cycle the breaker for the air handler if needed. You may also be low on freon, though, so a service call might be a good idea anyway.

Posted on Oct 06, 2009

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