Question about Heating & Cooling

Open Question

Cm927 honeywell is displaying 'internal error' and a flashing 'spanner' sign, I have tried removing batteries and also replacing new ones, can anything be done to repair it or should i get anew one, it is 2 years old, kind regards, John.

Posted by Anonymous on


6 Suggested Answers

  • 2 Answers

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

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

  • 168 Answers

SOURCE: toshiba television

the symptom is caused by a breakdown in power supply or the horizontal deflection circuits. have it check by a qualified service technician.

Posted on Jan 16, 2007

  • 1 Answer

SOURCE: Battery Issue

This worked! Thank you! It was 49 degrees in the house, and now the heater is working again.

Thank you and warm wished for the new year!

Posted on Dec 30, 2008

  • 1 Answer

SOURCE: flashing battery symbol

I had this same problem today.  I called Honeywell and they said the flashing broken battery symbol may mean low batteries, or it may mean the battery type is incorrect.  They recommend only non-rechargeable alkaline batteries.  I was using rechargeable NiMH batteries.  Even though they were fully charged, I had the flashing battery symbol and the thermostat relay would not work.  I replaced with alkaline, the flashing battery indicator went out, the thermostat works again.
Odd that it worked for 3 months on the rechargeables after first install. I did notice the broken battery symbol came on after the first few days, but I checked the battery charges and they were good, so I disregarded the symbol until the thermostat stopped working today.  Apparently there is something about the NiMH performance characteristic that the thermostat doesn't like.

Posted on Feb 18, 2009

  • 80 Answers

SOURCE: EEE display code error on CT3600 Honeywell

I am a honeywell dealer and this stat is obsolete and no longer supported. I am not able to pull any info on this. It might be time for a new one.

Posted on Oct 07, 2009

  • 48 Answers

SOURCE: My Dell Inspiron 1525 is now around 2 years old

this sounds like a dying battery. But before doing so, try this:

  • right click on your desktop, select properties->Screen Saver->Power
  • create a new power scheme and call it something like 'battery drain'. Under 'Running on Batteries', set everything to 'never' and save.
  • run some power draining programs, eg. playing music CD at full blast to drain the power. Or if you worry about possibly damaging your CD, you can simply turn the screen brightness to the max and wait.
  • if the laptop still works after the battery level indicator is showing 0%, it means that your battery has not been fully charged - although the laptop 'thinks' that it is. keep draining the battery till it dies off, and perform and full battery charge. Your battery should be fine now
  • Personally, I'd drain my battery every now and then just to make sure that it's getting fully charged.

Hope this helps :-)

Posted on Aug 17, 2010

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Honeywell CM927 display problems

here is no repairing these, if it is not under warranty you must live with it or replace it.


Dec 14, 2013 | Heating & Cooling

1 Answer


I think you have the wrong category.

Apr 26, 2013 | Honeywell Computers & Internet

2 Answers

I have a honeywell cm927 control unit, and the red light on the receiver keeps flashing. i can manually turn the boiler on and off at the HC6ONG receiver. i've tried the faqs in the manual but to no joy....

The red flashing light means that there is an issues with the RF comms between control unit and receiver. You can reset by switching the boiler off and back on and then re-sending the temperature signal. You need to check batteries in you thermostat and also the position as the signal could be interfered with or it may be too far away from the receiver.

Sep 25, 2010 | Honeywell Programmable Thermostat Heater

1 Answer

Honeywell CM907 programmable thermostat seems to have problems with party mode when the optimisation mode is set on. Is this a known fault? I also have a CM927 not set to optimisation and never experience...

Go to
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.

Jan 08, 2010 | Heating & Cooling

1 Answer

EEE display code error on CT3600 Honeywell

I am a honeywell dealer and this stat is obsolete and no longer supported. I am not able to pull any info on this. It might be time for a new one.

Oct 01, 2009 | Honeywell Electronic Programmable...

2 Answers

I replaced the batteries after seeing a display of "EEE" and since then I get no display whatsoever. Honeywell/36

The internal sensor could be bad, try replacing the batteries again, be certain the polarity is correct, the sensor is inherent to the stat and the stat must be replaced.

Jul 19, 2009 | Honeywell Programmable Thermostat Heater

1 Answer

Honeywell Programmable Thermostat Display issues

there are currently 60 honeywell thermostats made i have no idea witch one you have , but a lot of the new ones run on batterys you might be seeing a low battery signal . look for a door where batterys might be and replace them

Jan 14, 2009 | Honeywell Programmable Thermostat Heater

Not finding what you are looking for?
Heating & Cooling Logo

Related Topics:

295 people viewed this question

Ask a Question

Usually answered in minutes!

Top Heating & Cooling Experts

Paul Carew

Level 3 Expert

3286 Answers

Dan Webster
Dan Webster

Level 3 Expert

8220 Answers

Tim Whalen

Level 3 Expert

3074 Answers

Are you a Heating and Cooling Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides