What E0 through E9 mean on the nJoy UWG5-4999 thermostat and when to contact an installer.
Use this guide for the nJoy UWG5-4999 thermostat. Electrical inspection, reconnection, and replacement should be handled by the installer or qualified contractor.
- E0: internal failure. Contact the contractor; the manual calls for thermostat replacement.
- E1: internal sensor defective or short-circuited. Contact the contractor for thermostat replacement.
- E2: external wired floor sensor disconnected, defective, or short-circuited. Have the contractor inspect the sensor and reconnect or replace it as required.
- E3: internal compensation sensor defective. Contact the contractor for thermostat replacement.
- E4: bootloader or update failure. Contact the contractor; the manual calls for replacement.
- E5: internal overheating. Have the contractor inspect the installation.
- E6: wireless-chip communication failure. Contact the contractor for replacement.
- E7: GFCI triggered. Have the installation inspected. Do not bypass the GFCI.
- E8: WiFi router unavailable; the WiFi icon blinks slowly. Check the network connection.
- E9: cloud unavailable; the WiFi icon blinks quickly. The code does not identify the underlying cause of the cloud connection failure.
WarmlyYours Technical Support can help at (800) 875-5285.
Sources
- Manufacturer instructions (publication 13031), PDF pp. 35–39.