Why is my thermostat flashing?

Further Questions?

Troubleshooting
- What if my thermostat screen is black and won’t turn on?
- Ground Fault Error: What does this Mean if my Thermostat has “Ground Fault Error” on the Display?
- Why is my Floor Temperature Reading Incorrect?
- What if the Sensor Probe Reads Higher or Lower than Actual Temperature?
- What does “ER1” on the thermostat display mean?
- Un-Mounting Your Thermostat
- Thermostat Reads Error Message “ER2” on the Display?
- Output Fault Detected on the Display
- My Floor has No Heat but There Are No Error Messages?
- Is it normal if I hear a clicking noise from my thermostat?
- Heater Error: What Does it Mean if my Thermostat Reads “Heater Error” on the Display?
- “ER1 Out” Thermostat Reading on the Display
- Why is my thermostat flashing?
- How do I perform a GFCI Test on my thermostat?
- Why does my thermostat say test monthly?
- What can I do if my old thermostat has stopped working?
- Why is my thermostat stuck on the Warmup screen?
- ER1 on the Thermostat Meaning
- What Does the Control Fault Error Message Mean?
- What is causing my thermostat to keep tripping requiring that I press the reset button?
- What if my thermostat says system is on however the floor is not heating up?
Wiring
- What if my thermostat screen is black and won’t turn on?
- Can I swap my 3iE to a 4iE or Tempo?
- Can I Have Another Thermostat as an Acting Relay?
- Can I upgrade to the 6iE?
- How far away from the thermostat can the relay be mounted?
- Can multiple relays be used?
- Do you have to wire the floor sensor probe that comes with the 3iE thermostat?
- How to wire the 3iE Energy-Monitoring Floor Heating Thermostat
Miscellaneous questions
- Why is my Floor not Reaching Target Temperature?
- Why does my thermostat trip every time it reaches the same temperature?
- When my screen goes dark, will my floor continue to heat?
- When I push the test monthly button on my thermostat, the screen goes red and tells me to call Warmup. Should I be worried?
- How can I turn my system on or off completely?
- Does the 3iE have a battery backup?
- Can I upgrade to the 6iE?
- Programming the Floor Temperature
- Initial Set up of the 3iE Energy Monitoring Floor Heating Thermostat
Installation
- Master/Relay (relay reading ER1)
- How do turn on my thermostat unit?
- Can my sensor probe be extended?
- Can I swap my 3iE to a 4iE or Tempo?
- Can I Have Another Thermostat as an Acting Relay?
- Can I upgrade to the 6iE?
- Can you trim the floor sensor?
- What are the Conduit Requirements when Installing a Warmup System?
- Where do I place the sensor probe when installing the DCM-PRO cables?
- Mounting the 3iE Energy Monitoring Floor Heating Thermostat
Programming
- Why can’t I program my thermostat to read air temperature?
- 3iE Making Temporary Temperature Adjustments
- 3iE Basic temperature programming/Setting each day separately
- 3iE Adjusting the time
- How do Warmup thermostats work?
- Can I turn my thermostat above 86°F?
Preparing for your project
- Do Warmup thermostats zone?
- Does every room with floor heat need its own thermostat?
- What are the Conduit Requirements when Installing a Warmup System?