Check the WiFi connection when an nJoy UWG5-4999 thermostat displays E8.
E8 means the WiFi router is unavailable. The WiFi icon blinks slowly.
- Check wireless signal strength with a phone beside the thermostat. Improve coverage if the signal is weak.
- Confirm that the network supports 2.4 GHz IEEE 802.11 b/g/n and WPA or WPA2 security.
- Check the router’s limit on simultaneous device connections.
- Restart the router according to its instructions and check for firmware updates with the router manufacturer or internet provider.
- Check for interference from nearby wireless equipment.
If the error persists, contact WarmlyYours Technical Support at (800) 875-5285. E8 identifies loss of the router connection; it does not by itself diagnose overheating or an internet-provider outage.
Sources
- Manufacturer instructions (publication 13031), PDF pp. 36–38.
- Manufacturer instructions (publication 13397), PDF p. 2.