Thermostat Unresponsive
Here's what typically causes this, and why an on-site diagnostic — not a phone guess — is what gets you an accurate estimate.
Power/Battery Issue
Dead batteries or a tripped breaker.
Wiring Issue
Loose or miswired connection.
Thermostat Failure
The control itself has failed.
Why diagnosis matters: A symptom like this can trace back to several different root causes, and the fix — and its cost — depends entirely on which one it is. Roxly doesn't quote a repair price over the phone based on a symptom alone: a technician inspects the equipment on site, tests the likely components, and confirms the actual cause before giving you a firm estimate. That's what makes the quote accurate instead of a guess you find out is wrong after the work starts.
Should I try replacing the thermostat myself first?
If you're comfortable, replacing batteries is fine — wiring issues are best left to a technician.
Could this affect the whole system?
Yes — an unresponsive thermostat can leave the whole system unable to run.