How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Brian Your Own Question
Brian
Brian, Plumber
Category: Plumbing
Satisfied Customers: 840
Experience:  16 yrs. experience as plumber, including full bathroom and kitchen installations.
63187465
Type Your Plumbing Question Here...
Brian is online now

Honeywell Room Thermostat DT90E showing 'failed' I have

Customer Question

Honeywell Room Thermostat DT90E showing 'failed' I have changed batteries but unable to restore the display-can you help please?
Assistant: I'll do all I can to help. How long have you been dealing with this?
Customer: About a week
Assistant: Do you plan on doing the work yourself?
Customer: If it requires wiring etc no
Assistant: Anything else we should know to help you best?
Customer: Because of the weather the boiler has not been used for heating for some weeks-it is used daily for hot water
Assistant: How long has this been going on? And how severe is the problem?
Customer: about a week and it means we cannot control the heatin-it is either on or off
Submitted: 14 days ago.
Category: Plumbing
Expert:  Brian replied 13 days ago.

Im sorry to hear this.
If the unit is under a year old contact honeywell for a new one
Otherwise apart from trying to reset it by removing the battery and turning the power off there is not a lot you can do with them
just change it for a new one.

Related Plumbing Questions