Troubleshoot UWG4-series nSpire Touch WiFi thermostat errors and wireless connection problems.
This guide applies to the UWG4-4999 nSpire Touch WiFi thermostat. For the newer nJoy UWG5, use its own manual.
Thermostat errors
- E0: internal failure; contact the installer for replacement.
- E1: internal sensor defective or short-circuited; contact the installer for replacement.
- E2: external floor sensor disconnected, defective, or short-circuited; have the installer inspect and reconnect or replace it.
- E5: internal overheating; have the installation inspected.
Heating switches off when these errors occur. Three circles containing dots indicate Child Lock; follow that section of the manual to unlock the thermostat.
WiFi checks
- Check signal strength with a phone beside the thermostat and improve coverage if needed.
- Use the security types supported by the manual: WPA or WPA2. WEP is not supported.
- Check whether the router has reached its connected-device limit.
- Restart the router following its instructions, check for firmware updates, and check interference from other wireless devices.
The thermostat can still control floor heating without a wireless connection.
Before considering a factory reset, record the Distributor ID displayed under Menu → User Settings → Information. A factory reset deletes personal settings, cannot be undone, and requires that ID. Contact WarmlyYours Technical Support at (800) 875-5285 if ordinary connection checks do not resolve the problem.
Sources
- Manufacturer instructions (publication 5795), PDF pp. 60 and 72–76.