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Thermostat Reads Error Message “ER2” on the Display?
3iE Energy-Monitoring Thermostat
The Thermostat Reads ER2
When the thermostat reads “ER2,” the floor sensor has a short circuit or has a loose connection. Your electrician must secure connections and test the probe using a multimeter set to the lowest possible ohms scale. The resistance reading should be between 7 and 17 ohms. If a short is found and a backup sensor probe was not installed, you can bypass the error message by setting the thermostat to read the air temperature instead.
Menu > Settings > Set Heating Target > Target Air Temperature
Is your thermostat reading “ER1”? Read our Warmupedia post here.
Further Questions?
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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 my Thermostat Makes a Clicking Noise?
- Heater Error: What Does it Mean if my Thermostat Reads “Heater Error” on the Display?
- “ER1 Out” Thermostat Reading on the Display
- What if my thermostat screen is black and won’t turn on?
- Why is my thermostat flashing?
- How do I test my thermostats GFCI?
- 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 does it mean if my thermostat reads “output fault detected” on the display?
- What is causing my thermostat to keep tripping requiring that I press the reset button?
- What does it mean if my thermostat reads “ER 1 Out” on the display?
- What if my thermostat says system is on however the floor is not heating up?
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Wiring
- What if my thermostat screen is black and won’t turn on?
- Can I Have Another Thermostat as an Acting Relay?
- What if my thermostat screen is black and won’t turn on?
- 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
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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
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Installation
- Master/Relay (relay reading ER1)
- How do I turn on my thermostat unit?
- Can my sensor probe be extended?
- Can I Have Another Thermostat as an Acting Relay?
- Can I upgrade to the 6iE?
- Can you trim the floor sensor?
- 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
- Preparing for your project